Measuring sleeve for folding rulers

Abstract

Measuring sleeve for folding rulers (10), characterized in that a non-transparent scale carrier band (11) is fixed in an overlap (12) of a transparent film sleeve (13), which is slidably provided on an end link (14) of a commercially available folding ruler (15), wherein the scale carrier band (11) is located on the inside broad side (16) of the end link when the folding ruler (15) is folded.

Description

Field of invention

[0001] The present invention relates to a device for measuring lengths and in particular an additional measuring device for commercially available folding rulers. background

[0002] Folding rulers (also: meter stick, folding rule) are well-known and popular - they are found in almost every toolbox and many craftsmen carry them readily available on their body, in the folding rule pocket of their work trousers.

[0003] This is understandable, as measuring a length only takes a few seconds, provided the folding ruler has enough space. Where this isn't the case, as with measuring the distance between two walls, it becomes more complicated. An inside measurement requires additional steps: You usually have to make a mark in the space and measure the distance from the two inner walls to the mark. The sum of these two measurements then gives the inside dimension. It becomes even more complicated if there's no surface nearby to mark the space with or if both intermediate results are fractions.

[0004] Interior measurements are not uncommon: the clear opening at windows and doors or between round columns, the width of hallways, office corridors or stair treads, the distance from walls in narrow rooms (such as guest toilets or vestibules), the distance between the floor and the sloping roof, the storage height under tables or beds, the space in cupboards, drawers or transport boxes, and the loading area of ​​a van or car trunk...

[0005] The simple design of a folding ruler is both a blessing and a curse: two end sections and eight intermediate sections, connected in pairs by swivel joints, can be folded down to a handy size for transport and unfolded to lengths of up to two meters for measuring – but only in 20 cm increments. For indoor measurements, the folding ruler is therefore almost always either too short or too long.

[0006] For this reason, countless people have invested a great deal of time and effort in solving the problem of "performing internal measurements in a single measurement process".

[0007] It should be clear that the length measurements and units used in this document in "cm" naturally also represent corresponding values ​​in "inch". State of the art

[0008] Numerous utility models and patents disclose additional devices for or modifications to folding rulers to perform an internal measurement in a single measuring operation. It discloses: DE 29614039 U1 (Englmann) describes a slider with a U-shaped cross-section that can be moved beyond the end of a folding ruler. The approximately 20 cm long, transparent slider can be provided with a scale and, depending on the embodiment, may or may not require a modification to the narrow side of the end segment. Where no modification is necessary, because the inwardly angled ends of the legs are relatively thin, there is a risk that the ends will not withstand the mechanical stresses (tensile forces perpendicular to the longitudinal axis; rough surfaces) permanently. As an alternative to the U-shaped slider, a closed, thin shell made of transparent material is mentioned, but without revealing anything essential, as well as a rod-shaped slider that is embedded in the end link.

[0009] DE 102004011127 A1 (Sinn) discloses a folding rule with a scale reversed on its broad side and a transparent slider with a scale that extends the end segment. One embodiment discloses a slider that completely encloses the end segment. The slider scale starts at zero and is located on the outer broad side of the end segment when the folding rule is folded. A disadvantage is that the two scale markings can overlap and are therefore more difficult to read. Furthermore, the starting point of the slider scale does not take into account the distance between the joint and the nearest segment end, which results in the subsequent calculation of the inside dimension using a number ending in "2" (instead of ideally zero). Another embodiment discloses a slider with a U-shaped cross-section, the scale of which is placed on the obliquely angled legs.Here, the end element has a trapezoidal cross-section, and this slider therefore cannot be slid onto standard folding rulers.

[0010] DE 854436 B (Müller) discloses a folding rule with a transparent sliding sleeve that completely encloses the end segment and is closed at the free end. The lockable sleeve is as long as the end segment, has a recess on its underside, and does not bear a scale. The end segment of the folding rule has a reverse scale. Therefore, the sliding sleeve is not used with commercially available folding rules. In addition to the reverse scale, the scale is likely offset by the thickness of the end cap on the end of the sleeve; otherwise, the end segment would probably have to be shortened to provide accurate measurements.

[0011] CH 186307 A (Wenger) describes a sliding rule with a U-shaped cross-section, the reading window and rib-shaped reading mark of which are located on the outward-facing front. A transverse wall, serving as a stop, is located on the end face of the sliding rule. A scale, offset by the thickness of the transverse wall, is located on the inside of the back of the sliding rule, and the free end of the end segment serves as an alternative reading mark. The folding rule has two scales on the end segment: a reverse scale and a regular scale, which is shortened by the thickness of the transverse wall. The end segment itself is also shortened by the thickness of the transverse wall and may have a guide groove. Therefore, a standard folding rule is not used. Because the sliding rule is opaque, an opening for reading the internal scale must be provided, through which contaminants can penetrate and make the sliding rule difficult to operate. Object of the invention

[0012] Based on the aforementioned prior art, the invention aims to provide an improved accessory device for folding rulers which: (a) enables internal measurement in a single measurement process, (b) does not require any modification to commercially available folding rulers, (c) can remain permanently on the folding ruler (always there and never gets in the way), (d) can hold the measurement in order to read it elsewhere in poor visibility conditions, (e) to produce cost-effectively and (f) is easy to use. Solution

[0013] This problem is solved by the features listed in claim 1: A non-transparent scale support band is fixed in an overlap of a transparent film sheath, which is slidably provided on an end member of a commercially available folding rule, wherein the scale support band is located on the inside broad side of the end member when the folding rule is folded. Benefits achieved

[0014] The advantages achieved with the invention, including its advantage-generating features, include: (a) The non-transparency of the scale carrier band allows the scale for the inside dimension to be provided on one side and the scale for the length dimension extending the folding rule (maximum dimension) on the opposite side, without the scale markings becoming illegible due to overlapping. This provides the user with additional measuring functions. Furthermore, the solid-color background facilitates reading. (b) The overlap of the foil covering on the broad side of the folding rule end segment creates a protected space in which a scale carrier strip, even made of moisture-sensitive material (paper), or an abrasion-sensitive print can be securely fixed. This enables cost-effective and durable scaling. (c) The transparency of the foil sleeve allows both the inner dimension and maximum dimension scales to be read from the outside, despite being oriented towards the inside of the sleeve or being fully enclosed in protective foil. Furthermore, the scale of the folding rule's end segment remains legible, meaning the measuring sleeve can remain permanently on the folding rule and is always available when needed. (d) The thinness of the foil sleeve, similar to that of overhead transparencies for laser printers, means that the measuring sleeve, due to its lack of mass, does not tend to slip off the folding rule. Furthermore, it allows for "blind" measurement in poor visibility conditions by pinching the measuring sleeve at the end segment with two fingers, thus holding the measurement until the folding rule can be read elsewhere. Moreover, the measuring sleeve adds no bulk (virtually no increase in volume or weight) and does not obstruct or impair the function of the other scale segments. Therefore, the measuring sleeve does not cause any problems if it remains permanently on the folding rule: the folding rule can be used as usual. (e) The ability to move the foil sleeve beyond the free end of an end segment complements the stepwise extension of the folding rule in 20 cm increments (by unfolding the scale segments) with the stepless extension of an end segment (by extending the measuring sleeve), which often makes it possible to take an inside measurement in a single measuring operation. (f) The placement of the scale carrier band on the inside broad side of the end segment when the folding rule is folded makes it possible to use the end of the end segment as a reading mark and prevents the scale of the end segment of the folding rule or advertising imprints from being covered by the scale carrier band. Further development of the invention

[0015] Advantageous embodiments and further developments of the invention are disclosed in the dependent claims, the description, and the figures. The invention also encompasses all combinations of at least two features disclosed in the description, the claims, and / or the figures.

[0016] An advantageous embodiment of the invention is specified in claim 2. The embodiment according to claim 2 makes it possible to utilize almost the entire length of the measuring sleeve as an increase in the measuring range.

[0017] A further advantageous embodiment of the invention is specified in claim 3. The embodiment according to claim 3 makes it possible to use a material or a method for the scale support band that allows for cost-effective production.

[0018] A further advantageous embodiment of the invention is specified in claim 4. The embodiment according to claim 4 makes it possible to perform an internal measurement in a single measuring process using the internal scale and to extend the length measuring range to almost 218 cm using the maximum scale extending the folding rule.

[0019] Another advantageous embodiment of the invention is specified in claim 5. The embodiment according to claim 5 makes it possible to simplify the determination of the inside dimension, since the measured values, which are added together, can be read directly at the measuring sleeve end of the folding rule and correspond at the opposite end of the rule to the scale value ending at zero at the joint of the folding rule.

[0020] An advantageous embodiment of the invention is specified in claim 6. The embodiment according to claim 6 makes it possible to simplify the determination of the maximum dimension extending the folding rule, since the measured values ​​of the total length can be read directly (without calculation).

[0021] A further advantageous embodiment of the invention is specified in claim 7. The embodiment according to claim 7, by fully encasing the end element in a sleeve-like form, ensures that the measuring sleeve can only be moved longitudinally. This not only prevents vertical detachment, which can occur with clamp-on sliders with a U-shaped cross-section, but also eliminates the need for a holding or guiding device, allowing a standard folding ruler to be used without modification. Furthermore, the sliding surface of the end element remains clean and functional, making the measuring sleeve suitable even for somewhat harsher working environments. This is particularly true because the overlap of the film sheath on the broad side not only provides a secure position for the scale carrier tape but also results in a more stable sleeve due to the increased wall thickness.

[0022] The embodiment according to claim 7 furthermore allows, through the open ends of the measuring sleeve – without a cap at the free end of the end segment – ​​(a) manufacturing is simple and cost-effective and (b) the stop of the folding rule remains intact. This means that the length scale of the folding rule and the standard folding rule itself can remain unchanged, even if the measuring sleeve remains permanently attached to the folding rule.

[0023] A further advantageous embodiment of the invention is specified in claim 8. The embodiment according to claim 8 makes it possible to provide the largest possible measuring range without impairing the rotatability of the next scale element. The remaining gaps in the measuring range of the inside dimension, from a measured value of 40 cm to 42 cm and recurring every 20 cm thereafter, e.g., from 60 cm to 62 cm, cannot readily be determined in a single measurement. For these cases, as before, two measurements can be taken, or an additional measuring sleeve can be provided on the other end element.

[0024] Another advantageous embodiment of the invention is specified in claim 9. The embodiment according to claim 9 makes it possible to use the free end of the measuring segment as a reading mark during internal measurement and to directly read the scale value ending in zero at the joint of the folding rule when determining the length of the unfolded scale segments, without turning the folding rule or counting the number of scale segments. Since the measured value of the measuring sleeve already takes into account the distance between the joint and the nearest segment end, and the second measured value is always a number ending in zero, adding the values ​​together to determine the internal dimension is easier.

[0025] An advantageous embodiment of the invention is specified in claim 10. The embodiment according to claim 10 makes it possible to extend the length measuring range for a measurement in a single measuring process to almost 218 cm.

[0026] Further advantages, features and design possibilities will result from the following description of figures illustrating exemplary embodiments, which are not to be understood as restrictive. List of characters

[0027] The drawings show: Fig. 1 a perspective view with a close-up of an embodiment according to the present invention: measuring sleeve for folding rulers; Fig. 2 a front view of a scale carrier band with internal dimension scale; Fig. 3 a rear view of a scale carrier band with maximum dimension scale; Fig. 4 a side view of an application example according to the present invention; Fig. 5 a close-up of another embodiment; Fig. 6 a front view of another scale carrier band with internal dimension scale; Fig. 7 a rear view of another scale carrier band with maximum dimension scale; Fig. 8 a rear view of yet another scale carrier band with maximum dimension scale; Detailed description of the exemplary implementations

[0028] Fig. Figure 1 shows a perspective view with a close-up of an embodiment according to the present invention: a measuring sleeve for folding rulers 10. The inventive structure comprises a non-transparent scale carrier band 11, which is fixed in an overlap 12 of a transparent film sleeve 13. The film sleeve 13 is slidably provided on an end member 14 of a commercially available folding ruler 15, with the scale carrier band 11 being located on the inner broad side 16 of the end member when the folding ruler 15 is folded.

[0029] The scale carrier strip 11 runs parallel to the longitudinal direction of the foil sheath 13 and extends over its entire length. The scale carrier strip 11 consists of an inexpensive paper or plastic strip or, alternatively, can be printed directly onto the foil sheath 13 by applying layers one after the other. Since the scale carrier strip 11 is not transparent, it can easily be provided on both sides with a customized length scale 17, 18: an internal scale 17 on one side and a maximum scale 18 extending the length of a folding rule on the opposite side. Alternatively, the maximum scale 18 can be replaced by an informational or advertising imprint or a blank area (not shown).

[0030] The transparent foil sheath 13 has a length that is exactly the same as the distance between the free end of the segment (zero point) 26 and the unfolded end of the segment 27 of the next intermediate segment (about 18 cm).

[0031] The enlarged section shows the free end 22 of the measuring sleeve: The transparent foil sheath 13 wraps - counterclockwise - around the end member 14 in a form-fitting manner and overlaps on a broad side 25, whereby the scale carrier strip 11 finds space in it and the sheathing 13 is closed by gluing, welding or in another known way and takes the form of a sleeve with a rectangular cross-sectional profile, open at both ends.

[0032] Not shown, but also falling within the scope of protection of this document, a transparent foil sheath 13 with an even thinner material thickness may be provided, which has a multitude of wrappings, wherein the scale carrier band 11 is again fixed within an overlap 12 and sits on the inner broad side 16 of the end link when the folding rule 15 is folded.

[0033] The inner scale 17 of the scale carrier band is directed towards the inside 28 of the measuring sleeve and can be read from the outside through the transparent foil sheath 13, with the free end of the link (zero point) 26 serving as a reading mark 29. The in the Fig. The concealed maximum dimension scale 18 of the scale carrier band is directed towards the outside 30 of the measuring sleeve and can be read from there, the scale carrier band 11 being narrower than the broad side 16 of the end link, and thus the free end 26 of the link again serving as a reading mark 29. Both the scale start 19 of the inner dimension scale 17 and the scale start 19 of the maximum dimension scale 18 coincide with the free end 22 of the measuring sleeve.

[0034] For the inventive effect of enabling an internal measurement in a single measuring process, the measuring sleeve 10 is displaceable beyond the free end 26 of an end member and is provided with at least one length scale 17, 18.

[0035] To achieve the inventive effect of not requiring any modification to commercially available folding rulers 15, the foil sheath 13 wraps the end member 14 in a form-fitting and complete manner in the form of a sleeve with a rectangular cross-sectional profile, open at both ends, thereby eliminating the need for holding or guiding devices, such as a guide groove or beveled narrow sides, on the folding ruler 15.

[0036] The inventive effect of being able to remain permanently on the folding rule 15 and thus always be at hand is aided by (a) the small material thickness of the scale carrier band 11 and the foil sleeve 13, as well as (b) their length, which does not impede either the joint 20 or the intermediate links 31, and (c) the transparency of the foil sleeve 13, which does not obscure either the length scale 24 of the folding rule or side advertising imprints (not shown).

[0037] The inventive effect of performing a length measurement without being able to directly read the scale value on the inner dimension or maximum dimension scale 17, 18, i.e., measuring virtually "blindly," which occurs in poor visibility conditions (darkness, overhead measurement, or obstructed view), is facilitated by the thinness of the foil sheath 13. The measuring sleeve 10 is pressed together at the end element 14 with two fingers, thus holding the measurement until the folding rule 15 can be read elsewhere.

[0038] To achieve the inventive effect of being easy and inexpensive to manufacture, commercially available materials such as paper and plastic film (similar to transparent overhead transparencies for laser printers) are used, which are processed in conventional ways such as cutting, folding and gluing.

[0039] Fig. Figure 2 shows a front view of a scale carrier band 11 with an internal scale 17. The most advantageous position of the scale markings of the internal scale 17 and of the scale carrier band 11 itself depends on the winding direction of the foil sheath 13. If the winding direction is counterclockwise, the scale markings of the internal scale 17 are preferably located above and the edge 32 near the center of the broad side of the measuring sleeve is located below the scale values ​​of the internal scale 17. This provides better protection for the scale carrier band 11 and allows the sheath 13 to be closed without protruding later.

[0040] To simplify subsequent calculations, the inside dimension scale 17 has a shortened scale start 19, so that the reading corresponds to the corrected remaining distance. The remaining distance is the difference between the final inside dimension and the length of the unfolded folding rule 15. The correction by the dimension joint / nearest joint end 20 / 21 allows for later addition with a number ending in zero, which is easier. (Reference symbols 13, 15, 20 and 21 in Fig. 1 shown)

[0041] For the inventive effect of ease of use, the scaling of the internal dimension scale 17 already takes into account the corrected remaining distance, which is then added to the measuring distance of the folding rule ending at zero. Furthermore, reading is facilitated by the monochrome background of the scale carrier band 11, especially by the high-contrast black and white color scheme.

[0042] Fig. Figure 3 shows a rear view of a scale carrier band 11 with a maximum scale 18 extending the measuring scale. The most advantageous position of the scale markings of the maximum scale 18 and of the scale carrier band 11 itself depends on the winding direction of the foil sheath 13. If the winding direction is counterclockwise, the scale markings of the maximum scale 18 and the edge 32 are preferably arranged near the center of the broad side of the measuring sleeve, below the scale values ​​of the maximum scale 18. This provides better protection for the scale carrier band 11, and the sheath 13 can be closed without protruding later. Furthermore, reading the maximum scale 18 is more accurate because the scale markings of the maximum scale 18 and the free end 26 of the end link, which serves as a reading mark 29, meet. (Reference numerals 13, 26, and 29 in Figure 3) Fig. 1 shown)

[0043] To simplify the determination of measurements for lengths greater than 200 cm, the maximum scale 18 not only has an enlarged scale start 19, beginning at 200 cm, but also scale values ​​that extend to the non-free end 23 of the measuring sleeve (in Fig. (1 shown) increase, allowing the measured values ​​of the total length to be read directly (without calculation).

[0044] To achieve the inventive effect of ease of use, the scaling of the maximum dimension scale 18 already takes into account the preceding folding rule segment. Furthermore, reading is again facilitated by the monochrome background of the scale support band 11.

[0045] For the inventive effect of enabling an internal measurement in a single measuring operation, the measuring sleeve 10 is displaceable beyond the free end 26 of an end member and is provided with at least one length scale 17, 18, whereby the length measuring range for a measurement in a single measuring operation is extended to almost 218 cm. (Reference numerals 10, 17 and 26 in Fig. 1 shown)

[0046] Fig. Figure 4 shows a simplified side view of an application example according to the present invention, wherein the inside dimension – the distance between two surfaces – is determined as follows: First, unfold the end member 14 (with measuring sleeve 10) and the subsequent intermediate members 31 until the remaining distance is shorter than the length of an intermediate member 31. Then, hold the intermediate member 31 against the first surface 33 and read the scale value at the joint 20 near the first surface 33 (a number ending in zero). Next, extend the measuring sleeve 10 until it rests against the second surface 34 and read the scale value on the inside dimension scale 17 (the free end 26 of the end member is the reading mark 29). Finally, add both scale values: they yield the final inside dimension. (Reference numerals 17, 18, 20, 26 and 29 in Figure 4.) Fig. 1 shown)

[0047] For the inventive effect of being easy to use, an adapted scaling of the internal dimension scale 17 and the maximum dimension scale 18 is provided, which facilitates or even replaces the calculation.

[0048] Fig. Figure 5 shows a close-up of the free end 22 of the measuring sleeve of a further embodiment. The transparent foil sheath 13 wraps – clockwise – around the end member 14 in a form-fitting manner and overlaps on one broad side 25, thereby providing space for the scale carrier strip 11 and closing the sheath 13 by gluing, welding or in another known manner, thus taking the form of a sleeve with a rectangular cross-sectional profile, open at both ends.

[0049] The inner scale 17 of the scale carrier band is directed towards the inside 28 of the measuring sleeve and can be read from the outside through the transparent foil sheath 13. The in the Fig. The concealed maximum dimension scale 18 of the scale carrier band is directed towards the outside 30 of the measuring sleeve and can be read from there, whereby the scale carrier band 11 is narrower than the broad side 16 of the end link and thus the free end 26 of the link can serve as a reading mark 29. Both the scale start 19 of the inner dimension scale 17 and the scale start 19 of the maximum dimension scale 18 coincide with the free end 22 of the measuring sleeve. (Reference symbols 14, 16, 26 and 29 in Fig. 1 shown)

[0050] For the inventive effect of being easy to use, the position of the scale markings of the inner scale 17 and the maximum scale 18 on the scale carrier band 11, as well as the position of the scale carrier band 11 itself on the broad side 25 of the measuring sleeve, can be changed to allow a desired scale arrangement.

[0051] Fig. Figure 6 shows a front view of another scale carrier band 11 with an internal scale 17. The most advantageous position of the scale markings of the internal scale 17 and of the scale carrier band 11 itself again depends on the winding direction of the film sheath 13 (in Fig. (5 shown). If the winding direction is clockwise, the scale markings of the inner scale 17 are preferably located below and the edge 32 is located near the center of the broad side of the measuring sleeve above the scale values ​​of the inner scale 17. This provides better protection for the scale carrier band 11 and allows the sheathing 13 to be closed without later protruding.

[0052] To simplify subsequent calculations, the internal scale 17 has a shortened scale start 19, so that the reading corresponds to the corrected remaining distance. The correction by the (in Fig. 1 (shown) dimension joint / nearest end of link 20 / 21 allows for later addition with a number ending in zero, which is less prone to calculation errors.

[0053] The inventive effect is identical to the inventive effect of Fig. 2.

[0054] Fig. Figure 7 shows a rear view of another scale carrier band 11 with a maximum dimension scale 18. The most advantageous position of the dimension marks of the maximum dimension scale 18 and of the scale carrier band 11 itself again depends on the winding direction of the film sheath 13 (in Fig. (5 shown). If the winding direction is clockwise, the scale markings of the maximum scale 18 and the edge 32 are positioned near the center of the broad side of the measuring sleeve, above the scale values ​​of the maximum scale 18. This provides better protection for the scale carrier band 11, and the sheathing 13 can be closed again without later protruding. Furthermore, reading the maximum scale 18 is more accurate because the scale markings of the maximum scale 18 and the free end 26 of the end link, which serves as the reading mark 29, align.

[0055] To simplify the determination of measurements for lengths greater than 200 cm, the maximum scale 18 not only has an enlarged scale starting point 19, beginning at 200 cm, but also scale values ​​that increase towards the non-free end 23 of the measuring sleeve, allowing the measured values ​​of the total length to be read directly (without calculation). (Reference symbols 23, 26 and 29 in Fig. 1 shown)

[0056] The inventive effects are identical to the inventive effects of Fig. 3.

[0057] Fig. Figure 8 shows a rear view of yet another scale carrier band 11 with maximum dimension scale 18. Unlike in Fig. 7 The scale values ​​are perpendicular to the longitudinal direction of the scale carrier band 11. The most advantageous position of the scale markings of the maximum scale 18 and of the scale carrier band 11 itself again depends on the winding direction of the film sheath 13 (in Fig. (5 shown). If the winding direction is clockwise, the scale markings of the maximum scale 18 and the edge 32 are located near the center of the broad side of the measuring sleeve, in front of the scale values ​​of the maximum scale 18. The resulting advantages are identical to the advantages of Fig. 7.

[0058] To simplify the determination of measurements for lengths greater than 200 cm, the maximum scale 18 not only has an enlarged scale start 19, beginning at 200 cm, but also scale values ​​that are perpendicular to the longitudinal direction of the scale carrier band 11 and thus to the non-free end 23 of the measuring sleeve (in Fig. (1 shown) increase. This allows not only the measured values ​​of the total length to be read directly (without calculation) but also makes it easier to read the reverse scale correctly, as it does not violate the usual reading direction (increasing to the right) of a length scale 18.

[0059] The inventive effects are again identical to the inventive effects of Fig. 3. Reference symbol list 10 Measuring sleeves for folding rulers 11 Scale carrier band 12 Overlap 13 Foil coating, sheathing 14 End member 15 folding ruler 16 Broadside of the terminal member 17 Length scale, inside scale, 18 Length scale, maximum scale, 19 Scale start 20 joint 21 Limb ends near the joint 22 free end of the measuring sleeve 23 non-free end of the measuring sleeve 24 Length scale of the folding rule 25 Broadside of the measuring sleeve 26 free segment ends (zero point) 27 members of the next intermediate member 28 Inside of the measuring sleeve 29 Reading mark 30 Outside of the measuring sleeve 31 Intermediate link 32 Edge near the center of the broad side of the measuring sleeve 33 first area 34 second area QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 29614039 U1

[0008] DE 102004011127 A1

[0009] DE 854436 B

[0010] CH 186307 A

[0011]

Claims

[1] Measuring sleeve for folding rulers (10), characterized by , that a non-transparent scale carrier band (11) is fixed in an overlap (12) of a transparent foil sheath (13), which is slidably provided on an end member (14) of a commercially available folding rule (15), wherein the scale carrier band (11) is located on the inside broad side (16) of the end member when the folding rule (15) is folded. [2] Measuring sleeve for folding rulers (10) according to claim 1, characterized by , that the scale carrier band (11) runs parallel to the longitudinal direction of the foil sheath (13) and extends over its entire length. [3] Measuring sleeve for folding rulers (10) according to one of the preceding claims, characterized by , that the scale carrier tape (11) is provided as a paper or plastic strip or by printing, by layering successively. [4] Measuring sleeve for folding rulers (10) according to one of the preceding claims, characterized by , that the scale carrier band (11) is provided on both sides with an adapted length scale (17, 18): an inner scale (17) on one side and a maximum scale (18) extending the folding rule on the opposite side. [5] Measuring sleeve for folding rulers (10) according to one of the preceding claims, characterized by , that the internal measurement scale (17) has a shortened scale start (19) to the distance that exists between the midline of a joint (20) and its nearest articulated end (21) (about 2 cm), the scale start (19) coinciding with the free end (22) of the measuring sleeve. [6] Measuring sleeve for folding rulers (10) according to one of the preceding claims, characterized by, that the maximum scale extending the folding rule (18) has an enlarged scale start (19) beginning with the highest scale value (200 cm) of the length scale (24) of the folding rule, wherein the scale values ​​of the maximum scale (18) increase towards the non-free end (23) of the measuring sleeve and wherein the scale start (19) coincides with the free end (22) of the measuring sleeve. [7] Measuring sleeve for folding rulers (10) according to one of the preceding claims, characterized by , that the transparent foil sheath (13) wraps the end member (14) in a form-fitting manner and overlaps on at least one broad side (25), whereby the scale carrier band (11) finds space therein and the sheathing (13) is closed by gluing, welding or in another known manner and assumes the form of a sleeve with a rectangular cross-sectional profile, open at both ends, which is displaceable beyond the free member end (zero point) (26). [8] Measuring sleeve for folding rulers (10) according to one of the preceding claims, characterized by , that the transparent foil sheath (13) has a length with a measure that exists between the free end of the segment (zero point) (26) and the unfolded end of the segment (27) of the next intermediate segment (about 18 cm). [9] Measuring sleeve for folding rulers (10) according to one of the preceding claims, characterized by , that the inner scale (17) of the scale carrier band is directed towards the inside (28) of the measuring sleeve and can be read from the outside through the transparent foil sheath (13), with the free end of the link (zero point) (26) serving as the reading mark (29). [10] Measuring sleeve for folding rulers (10) according to one of the preceding claims, characterized by, that the maximum scale (18) of the scale carrier band is directed towards the outside (30) of the measuring sleeve and can be read from there, wherein the scale carrier band (11) is narrower than the broad side (16) of the end link and thus the free link end (26) again serves as a reading mark (29).

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