Weighing apparatus for a lifting device

Abstract

Weighing apparatus (20, 200, 210, 220, 270), for use with a lifting device, such as a forklift (300) that includes a tine (100), is provided. The weighing apparatus includes a cover (40, 140) shaped and sized to at least partially surround the tine of the lifting device and a weighing unit (30) that weighs a load (120) lifted by the device, the weighing unit being coupled to a lateral side (46) of the cover such that the weighing unit is placed alongside the cover. A securing mechanism (272) reduces relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism (272) being reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load. Other applications are also described.

Description

[0001] WEIGHING APPARATUS FOR A LIFTING DEVICE

[0002] CROSS-REFERENCES TO RELATED APPLICATIONS The present application claims priority from U.S. Provisional Patent Application No.

[0003] 63 / 721,690 to Weinberger filed November 18, 2024, entitled "Weighing apparatus for a lifting device," which is incorporated herein by reference.

[0004] TECHNICAL FIELD

[0005] Some applications of the present disclosure generally relate to weighing scales. More specifically, some applications of the present disclosure relate to weighing scale apparatus and methods for use with lifting vehicles such as forklifts.

[0006] BACKGROUND

[0007] A forklift is a powered industrial vehicle used to lift and move heavy loads over short distances. Typically, forklifts have two side-by-side "forks", also known as blades or tines, which are typically side-by-side horizontally extending metal members which perform the lifting action. Forklifts are typically an integral part of the operation of factories, warehouses and distribution centers.

[0008] It is often desirable to weigh a load lifted by the forklift (or any other type of lifting device). For example, some forklifts may be limited to loads at a specific maximum weight. A load that exceeds such a maximum weight may compromise stability and impair operation of the forklift. It is therefore, for the above reason, and others, desirable to determine the weight of a load lifted by the forklift.

[0009] SUMMARY

[0010] In accordance with some applications of the present disclosure, weighing apparatus is provided for use with a lifting device, such as a forklift, for weighing loads lifted by the forklift while they are being lifted. The weighing apparatus is typically removably attachable to tines of the forklift such that it easily integrates with various types of forklifts without requiring modifications to the forklifts.

[0011] For some applications, the weighing apparatus comprises a cover, such as a sleeve or a sheath, which is shaped and sized to, at least partially, surround a tine of the forklift. For example, the tine slides into the cover such that the tine is fully placed within the cover. Alternatively, the cover is configured to only partially surround the tine of the lifting device, e.g., by being disposed around an upper portion of the tine.

[0012] The weighing apparatus additionally comprises a weighing unit configured to weigh a load that is being lifted by the forklift. The weighing unit is typically coupled to a lateral side of the cover such that the weighing unit is placed alongside the cover. The weighing unit typically has a lower surface, an upper surface, which contacts the load lifted by the forklift, and one or more load cells disposed between the lower surface and the upper surface. For some applications, a height of the weighing apparatus varies between the cover and the weighing unit such that a height of the weighing unit is greater than a height of the cover. When a load is lifted by the forklift, a gap forms between the upper surface of the cover and the load, such that the load is supported by the weighing unit, and not by the tine of the forklift which is fitted into the cover. Typically, by providing the weighing unit alongside the cover such that weighing of the load is done by the weighing unit, height of the weighing apparatus is reduced, relative to if, for example, the weighing unit were to be configured to be placed above the tine of the forklift. For example, a height of the upper surface of the weighing unit above the tine may be 0.1- 5 cm, thereby reducing the total height added to the tine by the weighing apparatus, relative to if, for example, the weighing unit were to be configured to be placed above the tine of the forklift. This is particularly advantageous when using lifting devices such as forklifts that have limited vertical space.

[0013] For some applications, the weighing apparatus is connected to an external computer processor that is not disposed within the weighing unit and / or a scale display, such as a screen or monitor, for displaying the weight measurements obtained from weighing unit. For such applications, the external computer processor receives and / or processes the measurements that are made by the load cells and displays the measurements and / or associated data on the display. The obtained measurements are saved in the external computer processor, a remote server, and / or a remote computer processor. For some applications, weighing apparatus comprises a computer processor physically coupled to (e.g., located in) the weighing unit for performing and processing measurements of the load cells in the weighing unit. For some such applications, the computer processor that is physically coupled to the weighing unit stores calibration data associated with the particular weighing unit to which the computer processor is coupled. As a result, the weighing apparatus is not limited for connection to an external computer processor that holds the calibration data. Rather, the computer processor that is physically coupled to the weighing unit processes any measurements that are made by the weighing unit with respect to the stored calibration data and then transmits the processed measurements to the external computer processor and / or directly to the display.

[0014] For some applications, the weighing unit includes one or more reinforcement ribs that are disposed along the lower surface of the weighing unit, and a reinforcement plate inserted between the reinforcement ribs and in contact with the upper surface of the weighing unit. The reinforcement plate typically distributes weight of the load lifted by the lifting device between the load cells.

[0015] For some applications, the weighing apparatus is configured to protect the weighing unit from impact to the weighing apparatus. For some such applications, the cover that surrounds the tine includes a protective extension extending beyond the weighing unit and is shaped such that a gap is formed between the protective extension and the weighing unit. In such a manner, if a collision occurs to the weighing apparatus, impact will affect the protective extension of the cover without being transmitted to the weighing device due to the gap between the protective extension and the weighing unit.

[0016] Alternatively, or additionally, for some applications the weighing apparatus includes one or more inserts (e.g., a metal insert) configured to be inserted between the tine and the cover such as to reduce a gap between the tine and the cover. By reducing a gap between the cover and the tine that is positioned within the cover, the cover is secured to the tine to reduce (and typically eliminate) relative motion between the tine and the cover to thereby stabilize the weighing apparatus while a load is being lifted by the weighing apparatus, thereby facilitating accurate weighing of the load. Typically, the one or more inserts facilitate accommodating the weighing apparatus for use with tines of various thickness and in various degrees of wear, thereby rendering the weighing apparatus suitable for use with various tine parameters without requiring modifications to the tine / lifting device.

[0017] For some applications, the weighing apparatus includes a securing mechanism that reduces relative motion of the weighing apparatus with respect to the lifting device (e.g., the forklift) in response to the load being placed on the weighing unit. The securing mechanism is configured to be reversibly engaged (e.g., locked) against a portion of the lifting device such as to counteract the weight applied to the weighing apparatus by the load. For example, the securing mechanism includes a pin or screw that is configured to transition to a vertically elevated position to be brought into proximity to the lifting device to typically engage a portion of the lifting device to reduce (e.g., prevent) relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, thereby facilitating accurate weighing of the load.

[0018] There is therefore provided, in accordance with some applications of the present disclosure, weighing apparatus for use with a lifting device that includes a tine, the weighing apparatus including:

[0019] a cover shaped and sized to at least partially surround the tine of the lifting device; a weighing unit configured to weigh a load that is lifted by the lifting device, the weighing unit being coupled to a lateral side of the cover such that the weighing unit is placed alongside the cover, the weighing unit including one or more load cells;

[0020] a securing mechanism configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

[0021] In some embodiments, the securing mechanism is configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly locked against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

[0022] In some embodiments, the securing mechanism includes a securing pin configured to reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

[0023] In some embodiments, the weighing apparatus further includes a computer processor that is physically coupled to the weighing unit, the computer processor being configured to store calibration data regarding the weighing unit and to process measurements that are made by the one or more load cells with respect to the calibration data.

[0024] In some embodiments, the weighing unit includes:

[0025] (i) one or more load cells; and

[0026] (ii) an upper surface disposed above the one or more load cells and configured to contact the load lifted by the lifting device; and

[0027] a height of the weighing apparatus varies between the cover and the weighing unit such that a height of the weighing unit is greater than a height of the cover, thereby forming a gap between the load and the cover when a load is lifted by the lifting device. In some embodiments, the weighing apparatus further includes:

[0028] one or more reinforcement ribs disposed along a lower surface of the weighing unit; and

[0029] a reinforcement plate inserted between the reinforcement ribs and in contact with the upper surface, the reinforcement plate configured to distribute a weight of the load lifted by the lifting device between the load cells.

[0030] In some embodiments, a distal portion of the cover includes a protective extension extending beyond a distal end of the weighing unit and being disposed such as to form a gap between a distal end of the weighing unit and a proximal end of the protective extension.

[0031] In some embodiments, the distal end of the weighing unit is shaped to define a slope that is configured to be tucked into the gap between the distal end of the weighing unit and a proximal end of the protective extension.

[0032] In some embodiments, the weighing apparatus further includes one or more inserts configured to be inserted between the tine and the cover such as to reduce a gap between the tine and the cover.

[0033] In some embodiments, each of the one or more inserts has a thickness of 1 - 10 mm. In some embodiments, each of the one or more inserts has a length of 15 - 1500 mm. In some embodiments, each of the one or more inserts has a width of 70 - 200 mm.

[0034] There is further provided, in accordance with some embodiments of the present disclosure, weighing apparatus for use with a lifting device that includes a tine, the weighing apparatus including:

[0035] a cover shaped and sized to at least partially surround the tine of the lifting device; a weighing unit configured to weigh a load that is lifted by the lifting device, the weighing unit being coupled to a lateral side of the cover such that the weighing unit is placed alongside the cover, and including: (i) an upper surface configured to contact the load lifted by the lifting device; (ii) a lower surface; and (iii) one or more load cells disposed between the lower surface and the upper surface;

[0036] one or more reinforcement ribs disposed along the lower surface of the weighing unit; a reinforcement plate inserted between the reinforcement ribs and in contact with the upper surface, the reinforcement plate configured to distribute a weight of the load lifted by the lifting device between the load cells. In some embodiments, the weighing apparatus further includes a computer processor that is physically coupled to the weighing unit, the computer processor being configured to store calibration data regarding the weighing unit and to process measurements that are made by the one or more load cells with respect to the calibration data.

[0037] In some embodiments, the weighing apparatus further includes a securing mechanism configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

[0038] In some embodiments, the securing mechanism is configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly locked against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

[0039] In some embodiments, the securing mechanism includes a securing pin configured to reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

[0040] In some embodiments, a distal portion of the cover includes a protective extension extending beyond a distal end of the weighing unit and being disposed such as to form a gap between a distal end of the weighing unit and a proximal end of the protective extension.

[0041] In some embodiments, the distal end of the weighing unit is shaped to define a slope that is configured to be tucked into the gap between the distal end of the weighing unit and a proximal end of the protective extension.

[0042] In some embodiments, the weighing apparatus further includes one or more inserts configured to be inserted between the tine and the cover such as to reduce a gap between the tine and the cover. In some embodiments, each of the one or more inserts has a thickness of 1 - 10 mm. In some embodiments, each of the one or more inserts has a length of 15 - 1500 mm. In some embodiments, each of the one or more inserts has a width of 70 - 200 mm.

[0043] There is further provided, in accordance with some embodiments of the present disclosure, weighing apparatus for use with a lifting device that includes a tine, the weighing apparatus including:

[0044] a cover shaped and sized to at least partially surround the tine of the lifting device; a weighing unit configured to weigh a load that is lifted by the lifting device, the weighing unit being coupled to a lateral side of the cover such that the weighing unit is placed alongside the cover, the weighing unit including one or more load cells;

[0045] a distal portion of the cover including a protective extension extending beyond a distal end of the weighing unit and being disposed such as to form a gap between a distal end of the weighing unit and a proximal end of the protective extension.

[0046] In some embodiments, the weighing apparatus further includes a computer processor that is physically coupled to the weighing unit, the computer processor being configured to store calibration data regarding the weighing unit and to process measurements that are made by the one or more load cells with respect to the calibration data.

[0047] In some embodiments, a distal end of the weighing unit is shaped to define a slope that is configured to be tucked into the gap between the distal end of the weighing unit and a proximal end of the protective extension.

[0048] In some embodiments, the weighing unit includes:

[0049] (i) one or more load cells; and

[0050] (ii) an upper surface disposed above the one or more load cells and configured to contact the load lifted by the lifting device; and

[0051] a height of the weighing apparatus varies between the cover and the weighing unit such that a height of the weighing unit is greater than a height of the cover, thereby forming a gap between the load and the cover when a load is lifted by the lifting device.

[0052] In some embodiments, the weighing apparatus further includes:

[0053] one or more reinforcement ribs disposed along a lower surface of the weighing unit; and a reinforcement plate inserted between the reinforcement ribs and in contact with the upper surface, the reinforcement plate configured to distribute a weight of the load lifted by the lifting device between the load cells.

[0054] In some embodiments, the weighing apparatus further includes a securing mechanism configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

[0055] In some embodiments, the securing mechanism is configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly locked against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

[0056] In some embodiments, the securing mechanism includes a securing pin configured to reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

[0057] In some embodiments, the weighing apparatus further includes one or more inserts configured to be inserted between the tine and the cover such as to reduce a gap between the tine and the cover.

[0058] In some embodiments, each of the one or more inserts has a thickness of 1 - 10 mm. In some embodiments, each of the one or more inserts has a length of 15 - 1500 mm. In some embodiments, each of the one or more inserts has a width of 70 - 200 mm.

[0059] There is further provided, in accordance with some embodiments of the present disclosure, weighing apparatus for use with a lifting device that includes a tine, the weighing apparatus including:

[0060] a cover shaped and sized to at least partially surround the tine of the lifting device; a weighing unit configured to weigh a load that is lifted by the lifting device, the weighing unit being coupled to a lateral side of the cover such that the weighing unit is placed alongside the cover, the weighing unit including one or more load cells;

[0061] one or more inserts configured to be inserted between the tine and the cover such as to reduce a gap between the tine and the cover.

[0062] In some embodiments, the weighing apparatus further includes a computer processor that is physically coupled to the weighing unit, the computer processor being configured to store calibration data regarding the weighing unit and to process measurements that are made by the one or more load cells with respect to the calibration data.

[0063] In some embodiments, each of the one or more inserts has a thickness of 1 - 10 mm. In some embodiments, each of the one or more inserts has a length of 15 - 1500 mm. In some embodiments, each of the one or more inserts has a width of 70 - 200 mm.

[0064] In some embodiments, the weighing unit includes:

[0065] (i) one or more load cells; and

[0066] (ii) an upper surface disposed above the one or more load cells and configured to contact the load lifted by the lifting device; and a height of the weighing apparatus varies between the cover and the weighing unit such that a height of the weighing unit is greater than a height of the cover, thereby forming a gap between the load and the cover when a load is lifted by the lifting device.

[0067] In some embodiments, the weighing apparatus further includes:

[0068] one or more reinforcement ribs disposed along a lower surface of the weighing unit; and

[0069] a reinforcement plate inserted between the reinforcement ribs and in contact with the upper surface, the reinforcement plate configured to distribute a weight of the load lifted by the lifting device between the load cells.

[0070] In some embodiments, the weighing apparatus further includes a securing mechanism configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

[0071] In some embodiments, the securing mechanism is configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly locked against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

[0072] In some embodiments, the securing mechanism includes a securing pin configured to reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

[0073] In some embodiments, a distal portion of the cover includes a protective extension extending beyond a distal end of the weighing unit and being disposed such as to form a gap between a distal end of the weighing unit and a proximal end of the protective extension.

[0074] In some embodiments, a distal end of the weighing unit is shaped to define a slope that is configured to be tucked into the gap between the distal end of the weighing unit and a proximal end of the protective extension.

[0075] There is further provided, in accordance with some embodiments of the present disclosure, weighing apparatus for use with a lifting device that includes a tine, the weighing apparatus including:

[0076] a cover shaped and sized to at least partially surround the tine of the lifting device; a weighing unit configured to weigh a load that is lifted by the lifting device, the weighing unit being coupled to a lateral side of the cover such that the weighing unit is placed alongside the cover, the weighing unit including one or more load cells; and

[0077] a computer processor that is physically coupled to the weighing unit, the computer processor being configured to store calibration data regarding the weighing unit and to process measurements that are made by the one or more load cells with respect to the calibration data.

[0078] There is further provided, in accordance with some embodiments of the present disclosure, apparatus for use with a lifting device that includes a tine, the apparatus including a securing mechanism configured to reduce relative motion of the tine with respect to the lifting device in response to a load being placed on the tine, by the securing mechanism being reversibly engaged against the lifting device such as to counteract the weight applied to the tine by the load.

[0079] In some embodiments, the securing mechanism is configured to reduce relative motion of the tine with respect to the lifting device in response to the load being placed on the tine, by the securing mechanism being reversibly locked against the lifting device such as to counteract the weight applied to the tine by the load.

[0080] In some embodiments, the securing mechanism includes a securing pin configured to reversibly engage against the lifting device such as to counteract the weight applied to the tine by the load.

[0081] The present disclosure will be more fully understood from the following detailed description of embodiments thereof, taken together with the drawings, in which:

[0082] BRIEF DESCRIPTION OF THE DRAWINGS

[0083] Fig. 1 and Fig. 2 are schematic illustrations of weighing apparatus for use with a lifting device, such as a forklift, in accordance with some applications of the present disclosure;

[0084] Fig. 3 A is a schematic illustration of a cross section of a weighing unit of the weighing apparatus for use with a lifting device, such as a forklift, in accordance with some applications of the present disclosure;

[0085] Fig. 3B is a schematic illustration of a cross section of the weighing apparatus for use with a lifting device, such as a forklift, in accordance with some applications of the present disclosure; Figs. 4A, 4B, 4C and 4D are schematic illustrations of weighing apparatus for use with a lifting device, such as a forklift, being used with the forklift, in accordance with some applications of the present disclosure;

[0086] Fig. 5A is a schematic illustration of a weighing apparatus for use with a lifting device, in accordance with another application of the present disclosure;

[0087] Fig. 5B is a schematic illustration of a cross section of the weighing apparatus of Fig.

[0088] 5 A, in accordance with some applications of the present disclosure;

[0089] Fig. 6A is a schematic illustration of a weighing apparatus for use with a lifting device, such as a pallet truck, in accordance with another application of the present disclosure;

[0090] Fig. 6B is a schematic illustration of a cross section of the weighing apparatus of Fig.

[0091] 6 A, in accordance with some applications of the present disclosure;

[0092] Figs. 7, 8A and 8B are schematic illustrations of a weighing apparatus for use with a lifting device, such as a forklift, in accordance with yet another application of the present disclosure;

[0093] Figs 9A and 9B are schematic illustrations of a cross section of a clamping device of the weighing apparatus of Figs. 7 and 8A-B, in accordance with some applications of the present disclosure;

[0094] Figs. 10A, 10B, IOC, 10D and 10E are schematic illustrations of various views of a weighing apparatus for use with a lifting device, such as a forklift, in accordance with yet additional applications of the present disclosure;

[0095] Figs. 11 A, 11B and 11C are schematic illustration of the weighing apparatus of Fig.

[0096] 10A being used with a lifting device, such as a forklift, in accordance with some applications of the present disclosure;

[0097] Figs. 12A and 12B are schematic illustrations of a securing mechanism configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, in accordance with some applications of the present disclosure;

[0098] Figs. 13 A and 13B are schematic illustrations of a cross section of the weighing apparatus being used with a lifting device, such as a forklift, in accordance with some applications of the present disclosure; and Figs 14A and 14B are schematic illustrations of the weighing apparatus being used with a lifting device, such as a forklift, in accordance with some applications of the present disclosure.

[0099] DETAILED DESCRIPTION

[0100] Reference is made to Fig. 1 and Fig. 2, which are schematic illustrations of weighing apparatus 20 for use with a lifting device, e.g., a lifting vehicle such as a forklift, in accordance with some applications of the present disclosure. Weighing apparatus 20 is configured for weighing loads lifted by the forklift during operation of the forklift. Conveniently, by facilitating weighing loads while they are being lifted by the forklift, use of weighing apparatus 20 typically obviates the need to weigh the load on a separate floor scale.

[0101] Weighing apparatus 20 is shaped and sized to couple to the forklift when it is desirable to weigh loads that are being lifted and transported by the forklift, and to be removed from the forklift once the load has been weighed. Weighing apparatus 20 is typically configured for easy attachment to, and subsequent removal from, various types of forklifts, without the need to adapt the forklift to weighing apparatus 20.

[0102] As shown, weighing apparatus 20 typically comprises a cover 40 and a weighing unit 30. Cover 40 and a weighing unit 30 are attached to form a single unit of weighing apparatus 20.

[0103] Cover 40 is typically shaped and sized to, at least partially, surround a load-lifting platform of a lifting device, such as a forklift. For example, when weighing apparatus 20 is used with a forklift, cover 40 is shaped and sized to surround a tine of the forklift at least partially. For some applications, cover 40 comprises a sleeve or a sheath shaped and sized to receive the tine of the forklift such that the tine is inserted into the sleeve or sheath. Alternatively, the cover is configured to only partially surround the tine of the lifting device, e.g., by being disposed around an upper portion of the tine. Cover 40 is removably attachable to the tine, such that it is placed on the tine and subsequently removed from the tine as desirable. For some applications, cover 40 is placed on / removed from the tine by sliding on / off the tine. Additionally, or alternatively, the apparatus includes a securing element 80 configured to secure cover 40 to the tine to avoid inadvertent sliding of cover 40 off the tine (an example of securing element 80 being shown in Fig. 4B). As shown, in Fig. 1, cover 40 has lower surface 42, upper surface 44 and lateral sides 46. Typically, cover 40 has a length LI of 10 - 250 cm, and a width W1 of 5 - 30 cm, e.g., 10 - 20 cm. Weighing apparatus 20 additionally comprises weighing unit 30, which is coupled to one of lateral sides 46 of cover 40, such that weighing unit 30 is placed alongside cover 40, as shown, in Figs. 1-2. It is noted that for some applications, weighing apparatus 20 comprises an additional weighing unit 30, coupled to second lateral side 46 of cover 40. For such applications, weighing of a load may be done by either one or both of weighing units 30.

[0104] Weighing unit 30 functions as a weighing scale configured to weigh the load that is lifted by the forklift. For some applications, weighing unit 30 has a lower surface 32, an upper surface 34, and one or more load cells 50 disposed between lower surface 32 and upper surface 34. Typically, one or more load cells 50 are disposed between lower surface 32 and upper surface 34 such as to contact lower and / or upper surfaces 32 and 34 of weighing unit 30.

[0105] Load cells 50 are configured to sense the load lifted by the forklift and generate a signal in response thereto to indicate the weight of the load. Load cells 50 may be any type of load cell, e.g., hydraulic, pneumatic, or any type of strain gauge. When a load is lifted by the forklift, the load contacts upper surface 34 of weighing unit 30, such that pressure of the load is applied to, and sensed by, load cells 50. For some applications, load cells 50 are distributed along a length L2 of weighing unit 30 to facilitate accurate weighing of the load placed across the tine. For example, as shown in Figs. 1-2, weighing unit 30 comprises at least two load cells 50, with one load cell disposed within a proximal portion 36 of weighing unit 30 and one load cell disposed within a distal portion 38 of weighing unit 30. For some applications, utilizing load cells that are disposed at respective locations along the weighing unit (or, optionally, along a substantial portion of the length of the weighing unit), facilitates calculating the location of the center of mass of a load that is placed upon the weighing unit (with such calculations typically being performed by a computer processor 242 described hereinbelow).

[0106] Typically, length L2 of weighing unit 30 is 3 - 250 cm and a width W2 of weighing unit 30 is 0.5 - 8 cm, e.g., 2 -7 cm.

[0107] Reference is now made to Fig. 3A, which is a schematic illustration of a cross section along the length of weighing unit 30, in accordance with some applications of the present disclosure. (The direction of the cross section that is shown in Fig. 3 A is indicated in Fig. 1.) As shown, for some applications, weighing unit 30 comprises first and second load cells 50 disposed at proximal portion 36 and distal portion 38 of the weighing unit. In it noted that that in the context of the present application, in the specification and the claims, the proximal portion of the weighing unit refers to the portion closer to a base of the tine when weighing apparatus 20 is placed on the tine (the base of the tine being the coupling location of the tine to the forklift vehicle), and the distal portion refers to farther from that base. Fig. 3 A additionally shows load cells 50 being disposed between, and in contact with, lower and upper surfaces 32 and 34 of weighing unit 30.

[0108] It is noted that Figs. 1-3 A show weighing apparatus 20 as having two load cells 50 by way of illustration and not limitation. Weighing apparatus 20 may comprise any number of load cells 50 disposed at any location in weighing unit 30. For example, weighing unit 30 comprises 1 - 6 load cells. It is further noted that in accordance with some applications of the present disclosure, cover 40 does not comprise any load cells and does not have any other form of a weighing scale or weight measurement capabilities. For some applications, weighing apparatus 20 is configured for use with forklifts that do not comprise any load cells or any other form of weight measurement capabilities.

[0109] Reference is now made to Fig. 3B, which is a schematic illustration of a cross section of weighing apparatus 20, in accordance with some applications of the present disclosure. (The direction of the cross section that is shown in Fig. 3B is indicated in Fig. 1.) As shown, weighing apparatus 20 defines weighing unit 30 (comprising load cells 50) coupled to lateral side 46 of cover 40, such that weighing unit 30 is placed alongside cover 40. Additionally, the height of weighing apparatus 20 varies between cover 40 and weighing unit 30 such that height H2 of weighing unit 30 is greater than height Hl of cover 40. Height Hl of cover 40 of weighing apparatus 20 is defined by lower surface 42 and by upper surface 44 of cover 40. Height H2 of weighing unit 30 of weighing apparatus 20 is defined by lower surface 32 and by upper surface 34 of weighing unit 30. As shown, upper surface 34 of weighing unit 30 is stepped with respect to upper surface 44 of cover 40, and both upper surfaces 34 and 44 are generally parallel to lower surfaces 32 and 42 (lower surfaces 32 and 42 being on the same plane). The step between upper surface 44 and upper surface 34, provides a height difference Ah3 between cover 40 and weighing unit 30.

[0110] For some applications, height Hl of cover 40 is between 2 - 8 cm, and height H2 of weighing unit 30 is between 2.1 - 10 cm. Typically, height difference Ah3 is a minimum of 0.1 cm, and / or a maximum of 5 cm, e.g., between 0.1 cm and 5 cm. For example, height difference Ah3 is a minimum of 0.5 cm and / or a maximum of 2 cm, e.g., between 0.5 cm and 2 cm. Or, height difference Ah3 may be a minimum of 0.5 cm and / or a maximum of 1 cm, e.g., between 0.5 cm and 1 cm. As described hereinbelow with reference to Fig. 4D, when a load is lifted by the forklift a gap is formed between cover 40 and the load due to height difference Ah3 between cover 40 and weighing unit 30. Typically, the load lifted by the forklift is fully supported and thereby weighed by weighing unit 30 and not by cover 40.

[0111] Reference is made to Figs. 4A-D, which are schematic illustrations of weighing apparatus 20 being used with a forklift having tines 100, in accordance with some applications of the present disclosure.

[0112] Fig. 4A shows forklift 300 comprising a pair of tines 100, and a respective unit of weighing apparatus 20 fitted onto each one of tines 100 by sliding tine 100 into cover 40. When cover 40 is placed to surround tine 100, weighing unit 30 is automatically positioned along a length of tine 100. It is noted that for some applications, a single unit of weighing apparatus 20 is shaped and sized to fit onto a pair of tines 100.

[0113] Optionally, but not necessarily, weighing apparatus 20 is secured to tine 100 by using a securing element. For example, a securing element 80 is used to removably secure weighing apparatus 20 to forklift 300 by securing cover 40 to the forklift, as shown in Fig. 4B. In accordance with respective applications, securing element 80 may be integrated with forklift 300 or is a separate element that is fitted onto the forklift. It is noted that securing element 80 is shown as a chain by way of illustration and not limitation. It is noted that any other type of securing element may be used to secure weighing apparatus 20 to forklift 300 and prevent sliding of cover 40 from tine 100. It is further noted that for other applications weighing apparatus 20 is secured to tine 100 simply by sliding tine 100 into cover 40.

[0114] Fig. 4B additionally shows a cross section of weighing apparatus 20 with tine 100 inserted into cover 40 such that upper-surface 44 of cover 40 resides above an upper-surface of tine 100. Placement of tine 100 within cover 40, typically stabilizes and positions weighing unit 30 with respect to tine 100, such that loads lifted by tine are supported and weighed by weighing unit 30.

[0115] Fig. 4C is a schematic illustration of weighing apparatus 20 being used with forklift 300, while forklift 300 is lifting load 120, in accordance with some applications of the present disclosure. As described hereinabove, weighing apparatus 20 is configured to measure a weight of load 120 while it is lifted by forklift 300. Weighing apparatus 20 is typically configured for use with standard and non-standard loads. Generally, the vertical space that is available above tines 100 is limited, for example due to pallets that are used with the forklift having standardized receiving spaces into which the tines of the forklift are inserted. Therefore, disadvantageously, any devices mounted onto the tine in addition to the load lifted by the forklift, add height to the already limited vertical space above the tine. Advantageously, weighing apparatus 20 is particularly configured for minimizing the height that is added to tines 100 when weighing apparatus 20 is used with forklift 300. Typically, weighing apparatus 20 adds less height above the tine in comparison to if the load cells were to be disposed above or below the cover that is placed on the tine. For example, if the load cells were to be disposed above the cover that is placed on the tine, the in addition to the load cells themselves, the weighing apparatus would require a further cover to cover the load cells, which would further add to the height of the tines.

[0116] In contrast, weighing apparatus 20 minimizes the height added above tines 100. Typically, by providing weighing unit 30 alongside cover 40, as opposed to being mounted on or within cover 40, height of the weighing apparatus is reduced. Additionally, load 120 is directly placed on upper surface 34 of weighing unit 30 such that no additional spacing between any one of load 120, weighing unit 30 and tine 100, is required. Typically, a height of upper surface 34 of weighing unit 30 above tine 100 is 0.1-5 cm, indicating the total height added above tine 100 by weighing apparatus 20. Additionally, or alternatively, a width that weighing apparatus 20 adds to tine 100 is less than 8 cm.

[0117] As shown in Fig. 4D, due to height difference Ah3 between cover 40 and weighing unit 30, when lifting load 120 by forklift 300, load 120 contacts upper surface 34 of weighing unit 30 but does not contact cover 40. Also, as shown, a gap G1 forms between upper surface 44 of cover 40 and load 120, such that load 120 is fully supported and weighed by weighing unit 30.

[0118] Fig. 4D additionally shows display 240 such as a screen or monitor and comprising electronics of the scale (the connection between weighing apparatus 20 and display 240 may be wired or wireless), as well as computer processor 242, for displaying the weight measurements obtained from weighing unit 30.

[0119] For some applications, a user interface 230 having a display such as a screen and / or at least one input means may be used with weighing apparatus 20. Typically, computer processor 242 receives and / or processes the measurements that are made by the load cells. It is noted that display 240, computer processor 242, and / or user interface 230 may be located within the forklift 300, weighing unit 30, and / or in a device (e.g., a handheld device that is typically used in the vicinity of the forklift), with these options being shown in Fig. 4C. In accordance with some applications of the present disclosure, the obtained measurements may be saved in computer processor 242, a remote server 260, and / or a remote computer processor 250. For some applications, a communications module (not shown) that is associated with display 240 communicates directly with remote server 260.

[0120] Typically, standard calibration measurements are performed on load cells 50 in weighing unit 30 prior to loads being weighed by weighing apparatus 20. The calibration process typically checks and adjusts weighing unit 30 to ensure it provides accurate and reliable weight measurements. In accordance with some applications of the present disclosure, the calibration measurements are processed by, and saved in, a computer processor 242A that is located within weighing apparatus 20, and more specifically within weighing unit 30 (this is shown in Fig.4D).

[0121] For some such applications, computer processor 242 A receives and processes calibration measurements of the load cells in weighing unit 30, and the calibration data is saved in computer processor 242A within weighing unit 30. For such applications, the calibration data is saved within weighing apparatus 20 rather than in a computer processor of display 240 in the lifting device. In such a manner, weighing apparatus 20 is not limited for use with computer processor 242 of display 240 storing its calibration data, thereby generally avoiding recalibration when switching a lifting device and / or display 240. In other words, calibration for a given weighing apparatus can be performed once, upon initiation of use, regardless of display 240 and computer processor 242.

[0122] If calibration measurements were to be processed and saved by computer processor 242 in display 240 each switching of weighing apparatus 20 that is used with display 240 would require recalibration. This is because the specific calibration data of the load cells of a given weighing apparatus that is saved in display 240 in the lifting device ceases to be relevant once a different weighing apparatus with its load cells is used with the lifting device. Once the calibration process is part of weighing unit 30 itself, the calibration data saved by computer processor 242A can be processed in combination with the measurements that are made by the load cells that are received computer processor 242. This allows for use of different weighing units 30 with computer processor 242 in display 240.

[0123] Additionally, or alternatively, in cases in which both tines 100 of forklift 300 are each coupled to a weighing apparatus 20 (for example as shown in Fig. 4A), and each one of the apparatuses includes a respective computer processor 242A, which stores calibration data, if one of the weighing apparatus 20 fails, it can be replaced without the need to replace the other.

[0124] For some applications, weighing apparatus 20 is programmed to connect to a specific display 240, and to change the connection to a different display 240 upon command. (The connection between weighing apparatus 20 and display 240 may be wired or wireless).

[0125] Reference is made to Figs. 1-4D. In accordance with some applications of the present disclosure, weighing apparatus 20 is configured for use with any type of a lifting device having a lifting platform, e.g., a lifting vehicle either motorized or manual. In accordance with some applications of the present disclosure, weighing apparatus 20 additionally comprises assistive devices for contributing to safe operation of forklift 300. For example, weighing apparatus 20 may comprise imaging devices, laser markers etc. In accordance with some applications of the present disclosure, cover 40 is shaped and sized to surround tine 100 along an entire length of tine 100 or alternatively along only a portion of the length of tine 100. Similarly, weighing unit 30 may be shaped and sized to be disposed along an entire length of tine 100 or alternatively along only a portion of the length of tine 100. For some applications, cover 40 and / or weighing unit 30 may be provided as a single unit, or alternatively cover 40 and / or weighing unit 30 may be provided as segmented units disposed on and alongside the tine (the segment may or may not be connected to each other).

[0126] Reference is now made to Figs. 5A and 5B, which are schematic illustrations of weighing apparatus 200 for use with a lifting device, such as a forklift and / or a pallet truck, in accordance with some applications of the present disclosure. Typically, weighing apparatus 200 comprises weighing unit 30 (weighing unit 30 is as described hereinabove with reference to Figs. 1-4), and a coupling element 90, which couples weighing unit 30 to a portion of the lifting device, e.g., to a tine of the lifting device. Typically, weighing apparatus 200 does not comprise a cover (as provided by cover 40 of weighing apparatus 20 described hereinabove with reference to Figs. 1-4). Therefore, weighing apparatus 200 may be particularly suited for operation with a pallet truck (or any other lifting device having tines on wheels), as coupling element 90 is not fitted over or around the tine.

[0127] As shown in Fig. 5A, coupling element 90 is typically configured to couple weighing unit 30 to a lateral side of a tine of the lifting device such that: (a) weighing unit 30 is placed alongside the tine, and (b) a height of the upper surface 34 of weighing unit 30 is greater than a height of an upper surface 110 of the tine. Due to the difference in height between the weighing unit and the tine, a gap is formed between the load and the tine when a load is lifted by the lifting device (such that the load is fully supported and weighed by weighing unit 30).

[0128] For some applications, coupling element 90 comprises a mechanical coupling element such as a screw. Additionally, or alternatively, coupling element 90 may comprise any other suitable type of coupling element, e.g., a magnetic coupling element, and / or an adhesive. For some applications, subsequently to weighing a load using apparatus 200, coupling element 90 may be removed to allow separation of weighing unit 30 from the tine.

[0129] Fig. 5B, is a schematic illustration of a cross section of weighing apparatus 200 shown in Fig. 5A, in accordance with some applications of the present disclosure. (The direction of the cross section that is shown in Fig. 5B is indicated in Fig. 5A.) As shown, weighing unit 30 is coupled to a lateral side of the tine, such that weighing unit 30 is placed alongside the tine. Additionally, as shown, a height difference Ah4 exists between the tine and weighing unit 30. Height difference Ah4 is generally similar to height difference Ah3 described hereinabove with reference to weighing apparatus 20.

[0130] Reference is now made to Figs. 6A and 6B, which are schematic illustrations of weighing apparatus 220 for use with a lifting device, such as a forklift and / or a pallet truck, in accordance with some applications of the present disclosure. For some applications, weighing apparatus 220 comprises a cover 140 configured to partially surround a tine of a lifting device, e.g., by being disposed around an upper portion of the tine. Weighing apparatus 220 may be particularly suited for operation with a pallet truck (or any other lifting device having tines on wheels), as cover 140 is generally disposed around the upper portion of the tine, such that operation of wheels is not disrupted. Optionally but not necessarily, apparatus 220 additionally comprises one or more coupling elements 90, as described hereinabove with reference to Figs.

[0131] 5A-B, which are configured to couple one or more weighing unit 30 to one or more lateral sides of the tine, by coupling cover 140 to the tine. It is noted that any other type of coupling element may be used to secure weighing apparatus 220 to the tine. It is further noted that for other applications cover 140 is coupled to the tine simply by fitting cover 140 onto the tine.

[0132] Fig. 6B, is a schematic illustration of a cross section of weighing apparatus 220 shown in Fig. 6A, in accordance with some applications of the present disclosure. (The direction of the cross section that is shown in Fig. 6B is indicated in Fig. 6A.) As shown, at least one weighing unit 30 is coupled to at least one lateral side of the tine, such that weighing unit 30 is placed alongside the tine. As shown, a height difference exists between the cover 140 and weighing unit 30, such that a gap is formed between a lifted load and cover 140 when a load is lifted by the lifting device (such that the load is fully supported and weighed by weighing unit 30).

[0133] Reference is made to Figs. 7, 8A-B, and 9A-B, which are schematic illustrations of a weighing apparatus 210 for use with a lifting device that comprises a tine, such as forklift 300 and / or a pallet truck, in accordance with yet another application of the present disclosure.

[0134] Weighing apparatus 210 is configured to be easily fitted onto a lifting device and is configured for use with various types of lifting devices without requiring modifications to the lifting devices. For some applications, weighing apparatus 210 is typically removably attachable to tines of the forklift such that it easily integrates with various types of forklifts without requiring modifications to the forklifts. Weighing apparatus 210 is configured to couple to the forklift when it is desirable to weigh loads that are being lifted and transported by the forklift, and to be removed from the forklift once the load has been weighed. Weighing apparatus 210 is typically configured for easy attachment to, and subsequent removal from, various types of forklifts, without the need to adapt the forklift to weighing apparatus 210.

[0135] Reference is now made to Fig. 7, which is a schematic illustration of weighing apparatus 210 being used with forklift 300, in accordance with some applications of the present disclosure. Weighing apparatus 210 is configured to measure a weight of a load (such as load 120 shown in Fig. 4C) while it is lifted by forklift 300. Fig. 7 is shown following fitting of apparatus 210 onto the forklift and prior to lifting of the load by the forklift.

[0136] Weighing apparatus 210 typically comprises cover 40 / 140, weighing unit 30, and a clamping device 170, all of which are assembled together as a single integrated unit that is configured to be fitted onto forklift 300 as one piece.

[0137] As described hereinabove, cover 40 / 140 is shaped and sized to at least partially surround tine 100 of forklift 300. Weighing unit 30 is coupled to a lateral side of cover 40 such that weighing unit 30 is placed alongside cover 40. For some applications, weighing apparatus 210 comprises an additional weighing unit 30, coupled to second lateral side of cover 40 / 140. For such applications, weighing of a load may be done by either one or both of weighing units 30. Weighing unit 30 functions as a weighing scale configured to weigh a load that is lifted by forklift 300 using one or more load cells 50 which are disposed in weighing unit 30, as described hereinabove. Clamping device 170 is configured to securely clamp cover 40 / 140 the tine of the forklift to reduce, e.g., prevent, relative motion between the tine and the cover during weighing of the load by forklift 300. Clamping device 170 keeps cover 40 / 140 stabilized with respect to tine 100, such that cover 40 / 140 generally does not move, twist or fold when a load is being weight lifted and / or transported by forklift 300. It is noted that for some applications, clamping device 170 is configured to clamp cover 40 / 140 to tine 100 such that motion of cover 40 / 140 with respect to the tine (e.g., twisting, folding, side-to-side, and / or back-and-forth motion) is prevented. By tightly clamping cover 40 / 140 to the tine to prevent motion of cover 40 / 140 with respect to the tine, tine 100 is allowed to move during its operation generally without causing any relative motion between tine 100 cover 40 / 140. Typically, preventing motion of cover 40 / 140 with respect to the tine using clamping device 170, contributes to the accuracy of the weighing process. By contrast, if the cover were to move with respect to the tine, this would in turn cause the weighing units to move, which would reduce the accuracy of the weighing process.

[0138] Fig. 7 shows a respective unit of weighing apparatus 210 removably fitted onto each one of the tines of forklift 300 (the tines are not visible in Fig. 7 since they are surrounded by cover 40 / 140). It is noted that for some applications, a single unit of weighing apparatus 210 is shaped and sized to fit onto a pair of tines 100. When weighing apparatus 210 is fitted onto a tine of forklift 300, cover 40 / 140 is placed to at least partially surround tine 100, weighing unit 30 is automatically positioned along a length of tine 100, and clamping device 170 is positioned to surround a proximal portion of the tine (the proximal portion of the tine being close to the base of the tine which is coupled to the forklift). Fig. 7 shows clamping device 170 in an open position prior to being operated to clamp cover 40 / 140 to the tine.

[0139] Typically, when it is desirable to place a load on forklift 300, clamping device 170 is transitioned from the open position into a closed position and is operated to securely fasten cover 40 / 140 to tine 100 through application of mechanical pressure. Typically, clamping device 170 releasably clamps a proximal portion of cover 40 / 140 to the tine in a manner that is sufficient to prevent motion, twisting and / or folding of cover 40 / 140 with respect to the tine along an entire length and width of cover 40 / 140. When cover 40 / 140 is clamped by clamping device 170 to the tine it is temporarily attached to the tine such that weighing apparatus 210 is stabilized with respect to forklift 300 to thereby facilitate efficient and safe lifting and weighing of a load. Once the load has been weighed, clamping device 170 is transitioned back into an open position, the clamping of cover 40 / 140 to the tine is released, and weighing apparatus 210 is removed from the forklift.

[0140] Reference is now made to Figs. 8A-B, which are schematic illustrations of an outer view of clamping device 170, in accordance with some applications of the present disclosure. Fig.

[0141] 8A-B show clamping device 170 fitted onto the tine of forklift 300 and surrounding the proximal portion of the tine (the proximal portion of the tine being close to the base of the tine which is coupled to the forklift). For some applications, clamping device 170 comprises a clamping unit 174 (shown in Figs. 9A-B) configured to apply the clamping pressure to the clamp cover 40 / 140 to the tine, and an operating unit 172 (shown in Figs. 9A-B) configured to acuate the clamping unit. Operating unit 172 typically includes operating lever 190, which is shown in Figs. 8A-B.

[0142] Fig. 8 A shows clamping device 170 in an open position, prior to operation of the clamping action. Fig. 8B shows clamping device 170 in a closed position operated to clamp cover 40 / 140 to the tine. In the transition from the open to the closed position, lever 190 is transitioned from the upright position shown in Fig. 8A to the closed position in Fig. 8B, as indicated by arrow Al .

[0143] Reference is made to Fig. 8B and Fig. 4B. For some applications, in addition to clamping device 170, weighing apparatus 210 further comprises a securing element 80, as shown in Fig. 4B. As described hereinabove, securing element 80 is generally configured to secure cover 40 (or 140) to the tine to avoid inadvertent sliding of the cover off the tine. As shown in Fig. 4B, for some applications, securing element 80 comprises a chain coupled to the forklift and to proximal edges of the cover to offset distal motion of the cover along the tine, which may cause the inadvertent sliding of the cover off the distal end of the tine. For some applications, a handle 180, which is shown in Figs. 8A-B, is actuated to activate securing element 80. Handle 180 is typically rotated in the direction indicated by arrow A2 when it is desirable to use securing element 80 to fasten cover 40 / 140. Clamping device 170, which typically tightly secures cover 40 / 140 to the tine by application of a clamping pressure, is used in addition to securing element 80. As described hereinabove, clamping device 170 is typically configured to prevent motion (e.g., twisting, folding, side-to-side, and / or back-and-forth motion) of cover 40 / 140 with respect to the tine along at least a majority of the length and width of cover 40 / 140 and tine 100. For some applications, weighing apparatus 210 does not include a securing element 80 in addition to clamping device 170. Reference is now made to Figs. 9A-B, which are schematic illustrations of a cross section of clamping device 170 of weighing apparatus 210, in accordance with some applications of the present disclosure. (The orientation of the cross section that is shown in Figs. 9A-B is indicated in Figs. 8A-B). Fig. 9 A shows clamping device 170 in the open position, prior to clamping of tine 100 by clamping device 170, and Fig. 9B shows clamping device 170 in the closed position operated to clamp cover 40 / 140 to tine 100.

[0144] Typically, clamping device 170 comprises a clamping unit comprising clamping surfaces configured to releasably clamp therebetween cover 40 / 140 and tine 100 to firmly secure the cover to the tine. Clamping device 170 additionally comprises an operating unit configured to actuate the clamping unit. For some applications, clamping device 170 comprises clamping unit 174 and operating unit 172, as shown in Figs. 9A-B.

[0145] For some applications, clamping unit 174 comprises a first clamping member 178 including a lower clamping member 178L and an upper clamping member 178U. Lower clamping member 178L is shaped to define a first clamping surface 177. Clamping unit 174 additionally comprises a second clamping member 176 shaped to define a second clamping surface 179. First and second clamping surfaces 177 and 179 are substantially parallel to each other and are vertically movable to sandwich cover 40 / 140 and tine 100 therebetween, resulting in tight clamping of cover 40 / 140 to tine 100. It is noted that second clamping surface 179 is not visible in Fig.9A since the view of clamping surface 179 is obscured by upper clamping member 178U. Second clamping surface 179 is visible in Fig. 9B.

[0146] Fig. 9A is a schematic illustration of a cross section of clamping device 170 in the open position prior to clamping of tine 100 by clamping device 170. When apparatus 210 is removably integrated with forklift 300, tine 100 is at least partially surrounded by cover 40 / 140 and is positioned such that the covered tine is inserted within clamping device 170, as shown in Fig. 9A. Operating unit 172 comprises an operating lever 190 which is shown in Fig. 9A in its open position. Operating lever is typically moveable by rotation in the direction indicated by arrow Al (Fig. 9B) between an open position and a closed portion. In the closed position, operating lever 190 actuates clamping unit 174.

[0147] Fig. 9B is a schematic illustration of a cross section of clamping device 170 in the closed position in which clamping device 170 is operated to clamp cover 40 / 140 to tine 100. As shown in Fig, 9B, in the closed position, operating lever 190 is rotated in the direction indicated by arrow Al causing clamping unit 174 to clamp cover 40 / 140 to tine 100. More specifically, transition of operating lever 190 from the open to the closed position causes vertical elevation of an operating pin 184. Pin 184 is coupled to clamping member 178 (e.g., via a hole 186). Elevation of operating pin 184 in response to transition of lever 190 into the closed position in turn causes movement of first clamping member 178 in the direction indicated by arrows A3, such that first clamping surface 177 is brought into contact with the lower surface of tine 100, and cover 40 / 140 is clamped to the tine between surface 177 and surface 179 of second clamping member 176.

[0148] It is noted that the clamping mechanism described in Figs. 7, 8A-B and 9A-B, (which uses clamping unit 174 actuated by operating unit 172), is described by way of illustration and not limitation. In accordance with some applications of the present disclosure, any suitable clamping mechanism may be used to clamp cover 40 / 140 and tine 100. Alternatively, it is noted that any mechanism that removably adheres cover 40 / 140 to in a manner that prevents motion, twisting and / or folding of the cover along a length and width of the tine, may be used in accordance with some applications of the present disclosure. As noted above, for some applications, the weighing apparatus comprises cover 40 / 140, weighing unit 30, and a clamping device, all of which are assembled together as a single integrated unit that is configured to be fitted onto forklift 300 as one piece.

[0149] Reference is still made to Figs. 7, 8A-B, and 9A-B. Optionally, but not necessarily, a height of the weighing apparatus 210 varies between the cover 40 / 140 and weighing unit 30 (as described hereinabove, e.g., with reference to apparatus 20), such that a height of the weighing unit is greater than a height of the cover. When a load is lifted by the forklift, a gap forms between the upper surface of the cover and the load, such that the load is supported by the weighing unit, and not by the tine of the forklift which is fitted into the cover, in accordance with the above description of any one of Figs. 1-6B. Alternatively, a height of the weighing apparatus 210 does not vary between the cover 40 / 140 and weighing unit 30 (i.e., a cover on the tine and the weighing unit have the same height such that a gap does not form between the upper surface of the cover and the load). That is to say that the scope of the present disclosure includes a weighing apparatus that comprises cover 40 / 140, weighing unit 30, and a clamping device 170, all of which are assembled together as a single integrated unit that is configured to be fitted onto forklift 300 as one piece (as is generally described with reference to Figs. 7-9B), in which there is no height gap between the upper surface of the cover and the load. Reference is now made to Figs. 10A-14B, which are schematic illustrations showing a weighing apparatus 270 for use with a lifting device that comprises a tine, such as a forklift 300 and / or a pallet truck, in accordance with additional applications of the present disclosure.

[0150] Weighing apparatus 270 is configured to be easily fitted onto a lifting device and is configured for use with various types of lifting devices without requiring modifications to the lifting devices. For some applications, weighing apparatus 270 is typically removably attachable to tines of the forklift such that it easily integrates with various types of forklifts without requiring modifications to the forklifts. Weighing apparatus 270 is configured to couple to the forklift when it is desirable to weigh loads that are being lifted and transported by the forklift, and to be removed from the forklift once the load has been weighed. Weighing apparatus 270 is typically configured for easy attachment to, and subsequent removal from, various types of forklifts, without the need to adapt the forklift to weighing apparatus 270.

[0151] Weighing apparatus 270 comprises weighing unit 30 and cover 40 (or cover 140), generally as described hereinabove. Weighing apparatus 270 comprises various features described hereinbelow with reference to Figs 10A-14B, each of these features being configured to also be integrated into any of the weighing apparatuses 20, 200, 210 and 220 described herein. The features described hereinbelow with respect to weighing apparatus 270 comprise (a) a securing mechanism, (b) a reinforcement mechanism, (c) a fitting mechanism and (d) a protective structure.

[0152] (a) Securing mechanism

[0153] Reference is made to a securing mechanism 272 (which typically comprises a securing pin), which is shown in Figs. 10A-10D, 11A-11C, 12A-12B, and 13A-13B. For some applications, weighing apparatus 270 comprises securing mechanism 272 that is configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to a load being placed on weighing unit 30. (Securing mechanism 272 is sometimes referred to herein as “securing pin 272,” but the scope of the present disclosure includes a securing mechanism having a different structure, such as a clip, a peg, a pole, etc., as would be understood by a person of ordinary skill in the art.) In some cases, the weight of a load placed on weighting unit 30 may cause undesired, lateral (sideway) movement (e.g., lateral tilting) of the weighing apparatus (and the tine placed inside the weighing apparatus) in a manner that may disrupt accurate weighing of the load. The securing mechanism is typically configured to stabilize the weighing apparatus, and the tine placed inside the cover of the weighing apparatus, so as to reduce (e.g., restrict or prevent) motion of the weighing apparatus when a load is placed on the weighing unit of the weighing apparatus. For some applications, the securing mechanism is configured to minimize lateral movement of the weighing apparatus in response to a load being placed on the weighing unit. For example, the securing mechanism is configured to restrict lateral movement of the weighing apparatus to 2 mm - 5 mm, in response to a load being placed on the weighing unit.

[0154] For some applications, securing mechanism 272 comprises a securing pin, which is configured to be reversibly brought into proximity with the lifting device to counteract the weight applied to the weighing apparatus by the load to thereby stabilize weighing apparatus 270 (and tine 100 that is placed inside cover 40 of weighing apparatus 270). For example, securing pin 272 is configured to be reversibly brought into close proximity within 2 - 5 mm of the lifting device. For some applications, the securing mechanism comprising securing pin 272, is configured to be reversibly engaged (e.g., locked) against the lifting device to counteract the weight applied to the weighing apparatus by the load to thereby stabilize weighing apparatus 270 (and tine 100 that is placed inside cover 40 of weighing apparatus 270). As shown in Figs.

[0155] 10A and 10B weighing apparatus 270 comprises supporting portion 27 shaped and sized for insertion of securing pin 272 therethrough. Securing pin 272 engages the lifting device to prevent destabilization of weighing apparatus when lifting a load. It is noted that securing pin 272 is shown by way example, and the securing mechanism described herein may comprise any other suitable securing component.

[0156] For some applications, apparatus 270 is additionally configured for use with a securing element 274. Securing element 274 functions similarly to securing element 80 described herein with reference to Fig. 4B. Securing element 274 is configured to removably secure weighing apparatus 270 to forklift 300, by securing cover 40 (or cover 140) to tine 100. For example, securing element 274 is configured to secure cover 40 to the tine to avoid inadvertent sliding of cover 40 off the tine. For some such applications, cover 40 of weighing apparatus 270 comprises extension wings 28 each shaped to define a hole, for insertion therethrough of securing element 274. Securing element 274 may include a pin, a peg, a pole, etc., as would be understood by a person of ordinary skill in the art.

[0157] The securing mechanism described herewith reference to securing pin 272, supporting portion 27 (and optionally securing element 274 and extension wings 28), may be provided as an independent unit that is configured to be removably coupled to apparatus 270 (e.g., to cover 40 or cover 140) or to a lifting surface (e.g., a tine) of any lifting device such as a forklift and / or pallet truck. Alternatively, the securing mechanism is an integral part of apparatus 270 and / or of a lifting surface (e.g., a tine) of any lifting device such as a forklift (such that apparatus 270 and or the lifting surface is manufactured to include the securing mechanism).

[0158] Reference is now made to Figs. 11 A-l 1C and Figs. 12A-12B. Reference is first made to Figs. 11 A-l 1C, which are schematic illustrations of weighing apparatus 270 being used with forklift 300 comprising tines 100, in accordance with some applications of the present disclosure. Fig. 11 A shows forklift 300 comprising a pair of tines 100, and a respective unit of weighing apparatus 270 prior to being fitting onto each one of tines 100 by sliding tine 100 into cover 40. Fig. 1 IB shows cover 40 being placed to surround tine 100, and thus weighing unit 30 is automatically positioned along a length of tine 100. When tine 100 is fitted into cover 40, wing extensions 28 are positioned on either side of tine 100 such that insertion of securing element 274 through the holes defined by extension wings 28 secures cover 40 to the forklift. Fig. 1 IB shows securing element 274 with extension wings 28 positioned on either side of the tine prior to insertion of securing element 274. Additionally, Fig. 1 IB shows securing pin 272 not yet being vertically lifted to be brought into close proximity with a carriage of forklift 300, e.g., lifted to engage a carriage of forklift 300. Fig. 11C shows securing element 274 placed to secure cover 40 to tine 100, and securing pin 274 being engaged with (e.g., locked against) the carriage of forklift 300 to counteract the weight of a load lifted by the forklift. In such a manner, weighing apparatus 270 is stabilized to reduce (e.g., prevent) motion of the weighing apparatus and the tine inserted therein, in response to a load placed on weighing unit 30, thereby facilitating accurate weighing of the load. Typically, the securing mechanism is configured to reduce (e.g., restrict or completely prevent) lateral (sideway) tilting of the weighing apparatus (and the tine inserted therein) about the X axis, in the direction of the semi-circle double-headed arrow shown in Fig. 11C. For example, the securing mechanism is configured to restrict lateral tilting of the weighing apparatus (and the tine inserted therein) to 2 mm - 5 mm, in the direction of the semi-circle double-headed arrow shown in Fig. 11C in response to a load being placed on the weighing unit.

[0159] Reference is now made to Figs. 12A and 12B, which are schematic illustrations of securing mechanism comprising securing pin 272, in accordance with some applications of the present disclosure. In particular, Figs. 12A and 12B show a transition between an elevated position and a non-elevated position of securing pin 272. In the elevated position of the securing pin, the pin is brought into close proximity with a carriage of the lifting device so as to counteract a load that is placed on the weighing device so as to restrict lateral movement of the weighing device in response to the load. For example, Figs. 12A and 12B show a transition between a non-engaged (e.g., unlocked) position to an engaged (e.g., locked) position of securing pin 272. Fig. 12A shows securing pin 272 prior to being engaged with a carriage portion of the forklift, and Fig. 12B shows securing pin 272 subsequently to vertical elevation and engaging (e.g., locking) of securing pin 272 against the carriage portion of the forklift. As described hereinabove, in the position shown in Fig. 1 IB, securing pin 272 stabilizes weighing apparatus 270 and tine 100 when a load is placed on weighing unit 30.

[0160] It is noted that the securing mechanism described herein with reference to securing pin 272 is not limited to use with the weighing apparatuses described herein. The scope of the present disclosure includes use of the securing mechanism with any lifting device independently of the weighing apparatus. The scope of the present disclosure includes use of the securing mechanism with any lifting device (e.g., a forklift and / or a pallet truck) for counteracting a load lifted by the lifting device, so as to reduce lateral movement (e.g., sideway tilting) of the lifting surface (e.g., the tine) in response to the load being placed on the lifting surface. More specifically, the securing mechanism is configured to reduce relative motion of the lifting surface (e.g., the tine) with respect to the lifting device in response to a load being placed on the lifting device, by the securing mechanism being reversibly engaged against (or brought into close enough proximity to) the lifting device such as to counteract the weight applied to the lifting surface by the load. It is further noted that the securing mechanism described herein with reference to securing pin 272 is configured to stabilize the lifting surface (e.g., the tines) of a lifting device also in the absence of a load being lifted by the lifting surface. In accordance with such applications of the present disclosure, the securing mechanism is configured to reduce relative motion of the lifting surface (e.g., the tine) with respect to the lifting device also in the absence of a load being lifted by the lifting surface.

[0161] It is additionally noted that securing pin 272 is shown as a single securing pin 272 by way of illustration and not limitation. In accordance with some applications of the present disclosure, the securing mechanism may comprise any suitable number of securing pins 272 (e.g., 2 -4 securing pins). For example, a securing pin 272 may be positioned on both sides of the tine.

[0162] (b) Reinforcement Mechanism Reference is made to a reinforcement mechanism comprising one or more reinforcement ribs 279 and / or reinforcement plate 278, shown in Figs. 10B, IOC and 10E. As shown, reinforcement ribs 279 are disposed along lower surface 32 of weighing unit 30, and reinforcement plate 278 is inserted between reinforcement ribs 279 and in contact with upper surface 34 of weighing unit 30. Typically, reinforcement ribs 279 add mechanical strength to the structure of weighing unit 30. Thus, by manufacturing weighing unit 30 to include one or more reinforcement ribs 279 allows manufacturing upper and lower surfaces 32 and 34 with a minimal thickness of metal (since the reinforcement ribs typically compensate for reducing a thickness of lower and upper surfaces 32 and 34). Reinforcement ribs 279 typically stabilize the upper and lower surfaces 32 and 34 despite these surfaces being manufactured with reduced thickness and particularly prevent possible collapse of these surfaces when a load is weighed by the load cells.

[0163] Additionally, reinforcement plate 278 is inserted between ribs 279 and is configured to distribute a weight of the load lifted by the lifting device between load cells 50 thereby facilitating optimal and accurate weighing of the load by weighing unit 30 despite the use of manufacturing upper and lower surfaces 32 and 34 with a minimal thickness of metal.

[0164] Fig. 10B shows a top view of weighing apparatus 270, showing weighing unit 30 with upper surface 34 removed to provide the internal view of the weighing unit. Reinforcement ribs 279 are shown distributed along lower surface 32 of weighing unit 30 between load cells 50. For the purpose of illustration, reinforcement plate 278 is lifted to provide a full view of reinforcement plate 278 and ribs 279.

[0165] Fig. 10C is a schematic illustration of a cross section of weighing apparatus 270 shown in Fig. 10A, in accordance with some applications of the present disclosure. (The direction of the cross section that is shown in Fig. 10C is indicated in Fig. 10A.) Fig. 10C shows reinforcement plate 278 disposed between reinforcement ribs 279 and contacting upper surface 34 of weighing unit 30. Fig.10C shows positioning of reinforcement ribs 279 with respect to load cells 50. As described hereinabove, reinforcement plate 278 which is supported by ribs 279 and upper surface 34, distributes the weight of the load placed on weighing unit 50 between load cells 50.

[0166] Fig. 10E is a schematic illustration of a cross section of weighing apparatus 270 shown in Fig. 10A, in accordance with some applications of the present disclosure. (The direction of the cross section that is shown in Fig. 10E is indicated in Fig. 10A.) Fig. 10E shows another view of reinforcement rib 279.

[0167] (c) Fitting Mechanism

[0168] As described hereinabove, weighing apparatus 270 is configured for use, and is easily integrated, with various types of lifting devices without requiring modifications to the lifting devices. For some applications, apparatus 270 comprises a fitting mechanism comprising one or more inserts 276 configured to be inserted between tine 100 and cover 40 (or cover 140) to reduce a gap that may occur between the tine and the cover. Insert 276 is typically a rigid insert. For some applications, insert 276 comprises a metal plate insert. For some applications, insert 276 has a thickness of 1 - 10 mm (e.g., 1 - 5 mm), a length of 15 - 1500 mm (e.g., 100 - 1000 mm) and a width of 70 - 200 mm (e.g., 80- 120 mm).

[0169] Insert 276 is shown in Figs. 10A, 10B, 10D, 11 A, and 13A-13B.

[0170] As shown, for some applications, insert 276 is coupled to an edge of cover 40 through coupling elements, e.g., screws 277, and positioned such as to be inserted between cover 40 and tine 100, when tine 100 is placed inside cover 40. Insert 276 is shaped and sized to reduce a gap (e.g., close a gap) between the cover and the tine to secure the cover to the tine. By securing cover 40 to tine 100 relative motion between the tine and the cover during weighing of the load by forklift 300 is typically reduced or even prevented. One or more inserts 276 keep cover 40 (or cover 140) stabilized with respect to tine 100, such that cover 40 generally does not move, when a load is being weight lifted and / or transported by forklift 300. Typically, preventing motion of cover 40 with respect to the tine by using one or more inserts 276, contributes to the accuracy of the weighing process. By contrast, if the cover were to move with respect to the tine, this would in turn cause the weighing units to move, which would reduce the accuracy of the weighing process.

[0171] Fig. 10A shows insert 276 coupled to cover 40 via screws 277 (it is noted that insert 276 may be coupled to cover 40 by any other coupling mechanism). Fig. 10B shows insert 276 prior to coupling to cover 40. Fig. 10D is a schematic illustration of a cross section of cover 40 of weighing apparatus 270, showing insert 276 coupled to an upper inner surface of cover 40. (The direction of the cross section that is shown in Fig. 10D is indicated in Fig. 10A.) Figs. 13 A and 13B are schematic illustrations of tine 100 inserted into cover 40. Figs.

[0172] 13 A and 13B show a transition between insert 276 from being coupled to the upper inner surface of cover 40 (Fig. 13 A), to adhere to tine 100 (Fig. 13B). The transition between the position of insert 276 in Fig. 13 A to the position of insert 276 in Fig. 13B is facilitated by lowering and elevating screws 277.

[0173] As described hereinabove, use of one or more inserts 276 facilitates securing cover 40 to tine 100 by reducing a gap between tine 100 and cover 40, to thereby reduce (e.g., prevent) motion of cover 40 with respect to tine 100. Insert 276 facilitates accommodating weighing apparatus 270 for use with tines of various thickness and in various degrees of wear.

[0174] (d) Protective Structure

[0175] For some applications, weighing apparatus 270 is structured to protect weighing unit 30 from impact. More specifically, weighing apparatus 270 is structured such that in the event of a collision of weighing apparatus 270, weighing unit 30 is isolated from the impact. For some such applications, cover 40 is shaped to define a protective extension 43 shown in Figs. 10A- 10E, 11A-11C, and 14A- 14B.

[0176] For some such applications, protective extension 43 extends distally and laterally beyond weighing unit 30 and is shaped such that a gap (G2) is formed between protective extension 43 and the weighing unit 30. More specifically, as shown for example in Fig. 10A, a distal portion of cover 40 comprises protective extension 43 extending beyond a distal end 37 of weighing unit 30 and being disposed such as to form gap (G2) between distal end 37 of the weighing unit and a proximal end 45 of protective extension 43.

[0177] In such a manner, if a collision occurs to weighing apparatus 270 (as illustrated in Figs.

[0178] 14A-14B), the impact to the weighing apparatus will affect protective extension 43 of cover 40 without being transmitted to weighing unit 30 due to gap (G2) between protective extension 43 and weighing unit 30.

[0179] Additionally, or alternatively, weighing unit 30 itself is structured to be protected from impact. Weighing apparatus 270 is structured such that in the event of a collision of weighing apparatus 270, distal portion 38 of weighing unit 30 is generally protected from the impact such that the weighing unit itself and / or the load placed on the weighing unit are generally protected from impact. For some such applications, a distal end 380 of distal portion 38 of weighing unit 30 is shaped to define a slope that is tucked into gap (G2) (this is shown in Figs. 10C, 11 A- 11C, and 14A- 14B). The slope defined by distal end 380 typically lowers the distal portion of weighing unit 30 such that in the event of impact to weighing apparatus 270, the distal portion of the weighing unit does not suffer directly from the collision, thereby protecting the entire weighing unit and the load being lifted by apparatus 270. It will be appreciated by persons skilled in the art that the present disclosure is not limited to what has been particularly shown and described hereinabove. Rather, the scope of the present disclosure includes both combinations and subcombinations of the various features described hereinabove, as well as variations and modifications thereof that are not in the prior art, which would occur to persons skilled in the art upon reading the foregoing description.

Claims

CLAIMS1. Weighing apparatus for use with a lifting device that includes a tine, the weighing apparatus comprising:a cover shaped and sized to at least partially surround the tine of the lifting device; a weighing unit configured to weigh a load that is lifted by the lifting device, the weighing unit being coupled to a lateral side of the cover such that the weighing unit is placed alongside the cover, the weighing unit comprising one or more load cells;a securing mechanism configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

2. The weighing apparatus according to claim 1, wherein the securing mechanism is configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly locked against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

3. The weighing apparatus according to claim 1, wherein the securing mechanism comprises a securing pin configured to reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

4. The weighing apparatus according to claim 1, further comprising a computer processor that is physically coupled to the weighing unit, the computer processor being configured to store calibration data regarding the weighing unit and to process measurements that are made by the one or more load cells with respect to the calibration data.

5. The weighing apparatus according to any one of claims 1-4, wherein the weighing unit comprises:(i) one or more load cells; and(ii) an upper surface disposed above the one or more load cells and configured to contact the load lifted by the lifting device; andwherein a height of the weighing apparatus varies between the cover and the weighing unit such that a height of the weighing unit is greater than a height of the cover, thereby forming a gap between the load and the cover when a load is lifted by the lifting device.

6. The weighing apparatus according to claim 5, further comprising:one or more reinforcement ribs disposed along a lower surface of the weighing unit; anda reinforcement plate inserted between the reinforcement ribs and in contact with the upper surface, the reinforcement plate configured to distribute a weight of the load lifted by the lifting device between the load cells.

7. The weighing apparatus according to any one of claims 1-4, wherein a distal portion of the cover comprises a protective extension extending beyond a distal end of the weighing unit and being disposed such as to form a gap between a distal end of the weighing unit and a proximal end of the protective extension.

8. The weighing apparatus according to claim 7, wherein the distal end of the weighing unit is shaped to define a slope that is configured to be tucked into the gap between the distal end of the weighing unit and a proximal end of the protective extension.

9. The weighing apparatus according to any one of claims 1-4, further comprising one or more inserts configured to be inserted between the tine and the cover such as to reduce a gap between the tine and the cover.

10. The weighing apparatus according to claim 9, wherein each of the one or more inserts has a thickness of 1 - 10 mm.

11. The weighing apparatus according to claim 9, wherein each of the one or more inserts has a length of 15 - 1500 mm.

12. The weighing apparatus according to claim 9, wherein each of the one or more inserts has a width of 70 - 200 mm.

13. Weighing apparatus for use with a lifting device that includes a tine, the weighing apparatus comprising:a cover shaped and sized to at least partially surround the tine of the lifting device; a weighing unit configured to weigh a load that is lifted by the lifting device, the weighing unit being coupled to a lateral side of the cover such that the weighing unit is placed alongside the cover, and comprising: (i) an upper surface configured to contact the load lifted by the lifting device; (ii) a lower surface; and (iii) one or more load cells disposed between the lower surface and the upper surface;one or more reinforcement ribs disposed along the lower surface of the weighing unit;a reinforcement plate inserted between the reinforcement ribs and in contact with the upper surface, the reinforcement plate configured to distribute a weight of the load lifted by the lifting device between the load cells.

14. The weighing apparatus according to claim 13, further comprising a computer processor that is physically coupled to the weighing unit, the computer processor being configured to store calibration data regarding the weighing unit and to process measurements that are made by the one or more load cells with respect to the calibration data.

15. The weighing apparatus according to claim 13 or claim 14, further comprising a securing mechanism configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

16. The weighing apparatus according to claim 15, wherein the securing mechanism is configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly locked against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

17. The weighing apparatus according to claim 15, wherein the securing mechanism comprises a securing pin configured to reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

18. The weighing apparatus according to claim 13 or claim 14, wherein a distal portion of the cover comprises a protective extension extending beyond a distal end of the weighing unit and being disposed such as to form a gap between a distal end of the weighing unit and a proximal end of the protective extension.

19. The weighing apparatus according to claim 18, wherein the distal end of the weighing unit is shaped to define a slope that is configured to be tucked into the gap between the distal end of the weighing unit and a proximal end of the protective extension.

20. The weighing apparatus according to any one of claims 13-19, further comprising one or more inserts configured to be inserted between the tine and the cover such as to reduce a gap between the tine and the cover.

21. The weighing apparatus according to claim 20, wherein each of the one or more inserts has a thickness of 1 - 10 mm.

22. The weighing apparatus according to claim 20, wherein each of the one or more inserts has a length of 15 - 1500 mm.

23. The weighing apparatus according to claim 20, wherein each of the one or more inserts has a width of 70 - 200 mm24. Weighing apparatus for use with a lifting device that includes a tine, the weighing apparatus comprising:a cover shaped and sized to at least partially surround the tine of the lifting device; a weighing unit configured to weigh a load that is lifted by the lifting device, the weighing unit being coupled to a lateral side of the cover such that the weighing unit is placed alongside the cover, the weighing unit comprising one or more load cells;wherein a distal portion of the cover comprises a protective extension extending beyond a distal end of the weighing unit and being disposed such as to form a gap between a distal end of the weighing unit and a proximal end of the protective extension.

25. The weighing apparatus according to claim 24, further comprising a computer processor that is physically coupled to the weighing unit, the computer processor being configured to store calibration data regarding the weighing unit and to process measurements that are made by the one or more load cells with respect to the calibration data.

26. The weighing apparatus according to claim 24, wherein a distal end of the weighing unit is shaped to define a slope that is configured to be tucked into the gap between the distal end of the weighing unit and a proximal end of the protective extension.

27. The weighing apparatus according to any one of claims 24-26, wherein the weighing unit comprises:(i) one or more load cells; and(ii) an upper surface disposed above the one or more load cells and configured to contact the load lifted by the lifting device; andwherein a height of the weighing apparatus varies between the cover and the weighing unit such that a height of the weighing unit is greater than a height of the cover, thereby forming a gap between the load and the cover when a load is lifted by the lifting device.

28. The weighing apparatus according to claim 27, further comprising:one or more reinforcement ribs disposed along a lower surface of the weighing unit; anda reinforcement plate inserted between the reinforcement ribs and in contact with the upper surface, the reinforcement plate configured to distribute a weight of the load lifted by the lifting device between the load cells.

29. The weighing apparatus according to any one of claims 24-26, further comprising a securing mechanism configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

30. The weighing apparatus according to claim 29, wherein the securing mechanism is configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly locked against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

31. The weighing apparatus according to claim 29, wherein the securing mechanism comprises a securing pin configured to reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

32. The weighing apparatus according to any one of claims 24-26, further comprising one or more inserts configured to be inserted between the tine and the cover such as to reduce a gap between the tine and the cover.

33. The weighing apparatus according to claim 32, wherein each of the one or more inserts has a thickness of 1 - 10 mm.

34. The weighing apparatus according to claim 32, wherein each of the one or more inserts has a length of 15 - 1500 mm.

35. The weighing apparatus according to claim 32, wherein each of the one or more inserts has a width of 70 - 200 mm.

36. Weighing apparatus for use with a lifting device that includes a tine, the weighing apparatus comprising:a cover shaped and sized to at least partially surround the tine of the lifting device;a weighing unit configured to weigh a load that is lifted by the lifting device, the weighing unit being coupled to a lateral side of the cover such that the weighing unit is placed alongside the cover, the weighing unit comprising one or more load cells;one or more inserts configured to be inserted between the tine and the cover such as to reduce a gap between the tine and the cover.

37. The weighing apparatus according to claim 36, further comprising a computer processor that is physically coupled to the weighing unit, the computer processor being configured to store calibration data regarding the weighing unit and to process measurements that are made by the one or more load cells with respect to the calibration data.

38. The weighing apparatus according to claim 36, wherein each of the one or more inserts has a thickness of 1 - 10 mm.

39. The weighing apparatus according to claim 36, wherein each of the one or more inserts has a length of 15 - 1500 mm.

40. The weighing apparatus according to claim 36, wherein each of the one or more inserts has a width of 70 - 200 mm.

41. The weighing apparatus according to any one of claims 36-40, wherein the weighing unit comprises:(i) one or more load cells; and(ii) an upper surface disposed above the one or more load cells and configured to contact the load lifted by the lifting device; andwherein a height of the weighing apparatus varies between the cover and the weighing unit such that a height of the weighing unit is greater than a height of the cover, thereby forming a gap between the load and the cover when a load is lifted by the lifting device.

42. The weighing apparatus according to claim 41, further comprising:one or more reinforcement ribs disposed along a lower surface of the weighing unit; anda reinforcement plate inserted between the reinforcement ribs and in contact with the upper surface, the reinforcement plate configured to distribute a weight of the load lifted by the lifting device between the load cells.

43. The weighing apparatus according to any one of claims 36-40, further comprising a securing mechanism configured to reduce relative motion of the weighing apparatus withrespect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

44. The weighing apparatus according to claim 43, wherein the securing mechanism is configured to reduce relative motion of the weighing apparatus with respect to the lifting device in response to the load being placed on the weighing unit, by the securing mechanism being reversibly locked against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

45. The weighing apparatus according to claim 43, wherein the securing mechanism comprises a securing pin configured to reversibly engaged against the lifting device such as to counteract the weight applied to the weighing apparatus by the load.

46. The weighing apparatus according to any one of claims 36-40, wherein a distal portion of the cover comprises a protective extension extending beyond a distal end of the weighing unit and being disposed such as to form a gap between a distal end of the weighing unit and a proximal end of the protective extension.

47. The weighing apparatus according to claim 46, wherein a distal end of the weighing unit is shaped to define a slope that is configured to be tucked into the gap between the distal end of the weighing unit and a proximal end of the protective extension.

48. Weighing apparatus for use with a lifting device that includes a tine, the weighing apparatus comprising:a cover shaped and sized to at least partially surround the tine of the lifting device; a weighing unit configured to weigh a load that is lifted by the lifting device, the weighing unit being coupled to a lateral side of the cover such that the weighing unit is placed alongside the cover, the weighing unit comprising one or more load cells; anda computer processor that is physically coupled to the weighing unit, the computer processor being configured to store calibration data regarding the weighing unit and to process measurements that are made by the one or more load cells with respect to the calibration data.

49. Apparatus for use with a lifting device that includes a tine, the apparatus comprising a securing mechanism configured to reduce relative motion of the tine with respect to the lifting device in response to a load being placed on the tine, by the securing mechanism beingreversibly engaged against the lifting device such as to counteract the weight applied to the tine by the load.

50. The apparatus according to claim 49, wherein the securing mechanism is configured to reduce relative motion of the tine with respect to the lifting device in response to the load being placed on the tine, by the securing mechanism being reversibly locked against the lifting device such as to counteract the weight applied to the tine by the load.

51. The apparatus according to any one of claims 49 and 50, wherein the securing mechanism comprises a securing pin configured to reversibly engage against the lifting device such as to counteract the weight applied to the tine by the load.

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