Holder and method for holding object

Abstract

To provide a holder in which a holder clip includes an adjustable opening to hold objects having different dimensions and can determine a holding force exerted on the objects in the opening.SOLUTION: A holder comprises: a tube 110 having a first end 110a and a second end 110b that is opposite to the first end; a movable clip 120 at the first end of the tube, the movable clip having an aperture 128 such that the object can be inserted through the aperture and held in the aperture; a cap 130 at the second end of the tube; a spring 140 inside the tube; a first retainer 112 inside the tube, where the first retainer couples the movable clip to the spring; and a second retainer 114 inside the tube, where the second retainer couples the cap to the spring. The cap is movable to adjust a spring force of the spring in order to hold the object in the aperture.SELECTED DRAWING: Figure 2B

Description

Technical Field

[0001] The present disclosure is directed to a holder configured to hold a probe or other object, and a calibration bus including the holder. The holder can be attached to the calibration bus, for example, to hold a probe within the calibration bus. The present disclosure is further directed to an apparatus and a system configured to support a plurality of holders.

Background Art

[0002] Generally, a holding structure can be designed using adjustable and movable components to hold various objects having different dimensions and weights. The holding structure can include components that can adjust the holder in three dimensions, for example, vertically, horizontally, and rotationally. For example, the holding structure can include a column fixed to a reference point such as a table, the ground, or the instrument body. The column can include a leg portion that helps position the column on the surface.

Summary of the Invention

Problems to be Solved by the Invention

[0003] A holder clip can be attached to the column. The holder clip can include an adjustable opening for holding objects having different dimensions. Conventionally, the dimensions of the opening are adjustable with a fastener. Also, the fastener can determine the holding force exerted by the holder clip on an object within the opening. For example, an operator can turn the fastener of the holder clip to apply an increasing force to the object or release the object from the opening. In all of these configurations, conventional holding structures require the operator to use both hands. That is, one hand is used to fix the holder, and the other hand is used to turn the fastener to adjust the holding force on the object in the opening of the holder.

Means for Solving the Problems

[0004] This disclosure relates to holding devices, systems, holders, and methods for holding objects such as measuring probes in a fixed position relative to instruments such as calibration instruments. In at least one embodiment, the holder is fixed to a vertical column by cross supports. The vertical, horizontal, and vertical positions of the holder can be adjusted by adjusting the cross supports.

[0005] The holder includes a tube that can be fixed to a cross support. A movable clip attached to the first end of the tube is configured to hold an object in a fixed position. The movable clip includes an opening into which an object can be inserted and held by the holder. The holding force exerted by the movable clip on an object in the opening can be adjusted by moving a cap attached to the tube, for example, at the second end of the tube.

[0006] In at least one embodiment, the cap is connected to a movable clip by a spring within a tube. The spring may be a helical coil connected to the movable clip by a first stabilizer and to the cap by a second stabilizer. The first stabilizer allows axial movement of the movable clip along the longitudinal axis of the tube. The axial movement of the movable clip can be restricted by one or more grooves on the movable clip and / or the tube. The holding force of the movable clip can be adjusted by changing the number of turns of the helical coil held by the first and / or second stabilizer. The rotational motion of the cap and / or helical coil can move the teeth of the first and / or second stabilizers between adjacent turns of the helical coil, thereby decreasing or increasing the number of turns of the helical coil held by the first and / or second stabilizers, and consequently adjusting the spring force exerted by the spring on the movable clip.

[0007] The opening of the movable clip is formed to allow different objects of different dimensions to be held within the opening. The size of the opening is variable to accommodate the dimensions of the object being held. An operator can grasp the tube with one hand, move the movable clip axially outward to open the opening, and insert the object into the opening. Moving the movable clip outward extends the spring inside the tube. The operator can then release the movable clip, and the object can be held within the opening by the contraction of the spring, where the object is held between the outer end of the movable clip and the end of the tube. Thus, the operator does not need to use a separate hand to adjust the size of the opening to hold objects of different dimensions. Furthermore, the holding force exerted by the movable clip on the object is variable according to the adjustment of the number of turns of the spring held by either the first and / or second holder. The holding system can be used in various applications such as measuring instruments, e.g., calibrators with calibration baths. The object held by the holder may be a measuring probe positioned in an environment to measure the properties of that environment. For example, the properties may include temperature, pressure, humidity, vibration, density, or viscosity, or a combination thereof. The opening may have an inner surface that, once the measuring probe is inserted into and held within the opening, is shaped to guide the measuring probe to a consistent position within the opening.

[0008] Furthermore, embodiments of a device for holding multiple objects, such as measuring probes, are disclosed herein. The device includes, as described above, a central holding device that can simultaneously connect multiple holders. Each holder may include, for example, a tube, a movable clip at the end of the tube, and a spring inside the tube. The movable clip has an opening into which an object can be inserted and held, while the spring force of the spring on the movable clip is adjustable to hold an object within the opening of the movable clip.

[0009] Embodiments of a system for holding multiple objects, such as multiple measuring probes for calibration, may include a support structure having a vertical column that can be attached to another object, such as a calibration device (e.g., a calibration bus). Cross supports are movable along the vertical column and can be fixed to the vertical column. Horizontal columns can be fixed to the vertical column and to a central holding device by the cross supports. The cross supports provide vertical and horizontal positioning of the horizontal columns relative to the calibration device. The central holding device includes one or more vertically oriented openings, and the periphery of the central holding device includes a plurality of horizontally oriented connecting openings. Horizontal columns are connected to the central holding device and support the central holding device, for example, relative to the calibration device. [Brief explanation of the drawing]

[0010] The aspects of this disclosure will be best understood from the following detailed description when read in conjunction with the attached drawings. Note that various features are not necessarily depicted to scale. [Figure 1A] Figure 1A shows a holding system configured to hold an object such as a probe, according to one or more embodiments of the present disclosure. [Figure 1B] Figure 1B provides a detailed diagram of the holding system shown in Figure 1A, according to one or more embodiments. [Figure 2A] Figure 2A shows a holder for the holding system illustrated in Figure 1A, according to one or more embodiments. [Figure 2B] Figure 2B is a cross-sectional view of the holder shown in Figure 2A according to one or more embodiments. [Figure 3A] Figure 3A provides a detailed view of the first end of the holder shown in Figure 2B, according to one or more embodiments. [Figure 3B] Figure 3B provides a detailed view of a portion of the movable clip of the holder illustrated in Figure 2B, according to one or more embodiments. [Figure 4] Figure 4 provides a detailed view of the second end of the holder illustrated in Figure 2B, according to one or more embodiments. [Figure 5] Figure 5 provides a detailed cross-sectional view of the head of the movable clip illustrated in Figure 2B, according to one or more embodiments. [Figure 6] Figure 6 is a flowchart showing a method according to one or more embodiments of the present disclosure. [Figure 7] Figure 7 shows a holding system configured to hold multiple objects, such as probes, according to one or more embodiments of the present disclosure. [Figure 8] Figure 8 provides a detailed diagram of the central holding device shown in Figure 7, according to one or more embodiments. [Figure 9] Figure 9 provides a detailed diagram of a multi-stage central holding device according to one or more embodiments. [Figure 10] Figure 10 shows a holding system configured to hold multiple objects, such as probes, according to one or more embodiments of the present disclosure. [Figure 11] Figure 11 provides a detailed diagram of a plurality of movable clips connected to a central holding device, according to one or more embodiments. [Figure 12] Figure 12 provides a detailed diagram of a plurality of movable clips connected to another embodiment of the central retaining device, according to one or more embodiments. [Modes for carrying out the invention]

[0011] Various embodiments of the holding devices, systems, holders, and methods disclosed herein enable the holding of an object, such as a measuring probe, in a fixed position relative to another object, such as a calibration device. Advantageously, the user (or operator) of the holder can operate the holder with one hand. In at least one embodiment of the holder, a movable clip at the first end of a tube is connected to a cap at the second end of the tube by a spring inside the tube. The operator can grasp the tube and push the movable clip axially outward along the tube to open the opening of the movable clip and insert the object into the opening. The operator can then release the movable clip, and the spring force of the spring pulls the movable clip back toward the first end of the tube. The object is held inside the opening between the first end of the tube and the inner surface of the opening at the outer end of the movable clip.

[0012] The amount of spring force applied by the spring on the movable clip is adjustable, thereby allowing adjustment of the amount of holding force exerted by the movable clip on the object held within the opening. Increasing or decreasing the amount of holding force exerted by the movable clip on the object increases or decreases the frictional force exerted on the object by the movable clip and the first end of the tube. In various embodiments, the holding force may be dynamically adjusted to hold each object, or it may be adjusted only at the start of a particular operation based on the characteristics of the object to be held by the holder during that particular operation. Once the holding force is set, the same holding force acts on each object of the same size placed in the opening of the holder.

[0013] The spring may be a helical coil that connects a movable clip to a cap using a first fixture and a second fixture connected to the ends of the spring. The spring force applied by the spring of the movable clip is adjustable by changing the number of turns of the helical coil held by the first fixture and / or the second fixture. The first fixture and / or the second fixture may have teeth extending between adjacent turns of the helical coil. The rotational movement of the cap and / or the helical coil moves the teeth along the turns of the helical coil to increase or decrease the number of turns of the helical coil held by the first fixture and / or the second fixture, and as a result, the spring force exerted by the spring on the movable clip can be adjusted.

[0014] Furthermore, the opening of the movable clip may advantageously be formed to allow different objects having different dimensions to be held in a consistent position within the opening. The inner surface of the opening is shaped to guide an object such as a measurement probe to a consistent position within the opening when the object is inserted into and held within the opening. This holding system can be used for various applications, such as a measuring instrument such as a calibrator having a calibration bath, to hold a measurement probe for measuring environmental characteristics such as temperature.

[0015] FIG. 1A is a perspective view of a holding system configured to hold a measurement probe 150 in a fixed position. The holding system can be used for various applications, such as a measuring instrument having a calibration bath 170, for example. The measurement probe 150 may be a measurement tool disposed in an environment and measuring the characteristics of the environment (e.g., the fluid within the calibration bath 170). For example, the characteristics may include temperature, pressure, humidity, vibration, density, or viscosity, or a combination thereof. In various embodiments, the holding system may be used to hold objects other than the measurement probe 150.

[0016] In some embodiments, the holding system includes a holder 100, a vertical column 160, and a cross support 162 connecting the holder 100 to the vertical column 160. The holder 100 is configured to hold a measuring probe 150 or other object that is selectively inserted through an opening 128 of the holder 100. The dimensions of the opening 128 are automatically adjusted based on the dimensions of the inserted object. The vertical position of the holder 100 along the y-axis, and the horizontal position of the holder 100 along the x-axis and z-axis, can be adjusted using the cross support 162. The vertical column 160 may be fixed in position relative to the instrument operated in conjunction with the measuring probe 150. In some embodiments, the vertical column 160 is a columnar column having an end 160a that can be attached to an instrument or stand. Thus, the end 160a may include an axially extending pin that is inserted into the instrument or stand (as shown in Figure 1B). The stand may be mounted on or adjacent to the surface of the instrument, such as the calibration bath 170 shown in Figure 1A. Furthermore, or alternatively, the pin may be inserted into a clip that can be fixed to a component of the fixture or stand. The material of the vertical column 160 may be low-conductivity or insulating with respect to the flow of electrical and / or thermal energy. In some embodiments, the material of the vertical column 160 may be stainless steel. In some embodiments, the material of the holder 100 may be the same as the material of the vertical column 160. By using a low-conductivity material, the holder 100 can hold the high-temperature measuring probe 150 in a high-temperature environment.

[0017] Figure 1B is a perspective view including more details of the holding system shown in Figure 1A. As described above, the cross support 162 fixes the holder 100 to the vertical column 160. The cross support 162 is vertically movable along the vertical column 160 and adjusts the vertical position of the holder 100 on the y-axis. Further, the cross support 162 is rotatable around the vertical column 160 to adjust the horizontal position of the holder 100 within the planes of the x-axis and z-axis. The cross support 162 includes a first opening 162a, a second opening 162b, a first screw 164, and a second screw 166. The holder 100 can be axially inserted into the first opening 162a. The dimensions of the first opening 162a are adjustable by the first screw 164.

[0018] The length of the holder 100 can be designed based on the application of the holder 100. For example, the length of the holder 190 can be made longer when the holder 100 is designed to be used in a toxic or high-temperature environment. The effective length of the holder 100 can be defined as the horizontal distance between the vertical column 160 and the opening 128. The effective length of the holder 100 is adjustable by the axial movement of the holder 100 inside the first opening 162a.. Thus, the rotation of the first screw 164 can open the first opening 162a for the axial movement of the holder 100. When the effective length of the holder 100 is adjusted to the desired length, the rotation of the first screw 164 can fix the holder 100 inside the first opening 162a.

[0019] Similarly, the vertical column 160 can move vertically inside the second opening 162b. Rotation of the second screw can open the opening 162 for vertical movement of the vertical column 160 inside the second opening 162b. Once the vertical position of the cross support 162 and, as a result, the holder 100 is adjusted to the desired position relative to the vertical column 160, rotation of the second screw 166 can fix the vertical column 160 inside the second opening 162b in the desired position. The material of the cross support 162 may be the same as or different from the material of the holder 100 and the vertical column 160. In some examples, the maximum and minimum horizontal movement limits of the holder 100 within the first opening 162a may be indicated by visible markings on the holder 100. The maximum and minimum horizontal movement limits may be determined based on the strength of the first screw 164 and the design of the first opening 162a. Similarly, the maximum and minimum vertical movement limits of the vertical column 160 within the second opening 162b may be indicated by visible markings on the vertical column 160. The maximum and minimum vertical movement limits may be determined based on the strength of the second screw 166 and the design of the second opening 162b.

[0020] The second screw 166 and the second opening 162b provide freedom of movement for the cross support 162 around and along the vertical column 160. Rotation of the second screw 166 can release the force applied by the second screw 166 on the vertical column 160, after which the cross support 162 can rotate around the vertical column 160 and move up and down. Once the cross support 162 is positioned in the desired location, rotation of the second screw 166 can fix the cross support 162 to the vertical column 160 in the desired position. In a similar manner, the first screw 164 and the first opening 162a provide freedom of rotation and axial movement for the holder 100 within the first opening 162a. Rotation of the first screw 164 can release the force applied by the first screw 164 on the holder 100, after which the holder 100 can rotate inside and move axially within the first opening 162a. Once the holder 100 is positioned as desired, the holder 100 can be fixed in that position by rotating the first screw 164.

[0021] Figure 2A shows a holder 100 of the retaining system illustrated and described in Figures 1A and 1B. The holder 100 includes a tube 110, a movable clip 120, and a cap 130. The tube 110 has an elongated shape with a first end 110a and a second end 110b. The movable clip 120 is attached to the first end 110a, and the cap 130 is attached to the second end 130. In various embodiments, the material of the tube 110 may be the same as or different from the material of the vertical column 60 shown in Figures 1A and 1B. The material of the movable clip 120 may be the same as or different from the material of the cap 130. In some embodiments, the material of the movable clip 120 and the cap 130 is the same as the material of the vertical column 160.

[0022] In various embodiments, the tube 110 has a circular cross-sectional shape with an outer diameter 110c. The outer diameter 110c may be consistent along the tube 110. The movable clip 120 includes a first portion 120a and a second portion 120b. The first portion 120a has an outer diameter 120c, and the second portion 120b has an outer diameter 120d. In the illustrated embodiment, the diameter 120c is larger than the diameter 120d. The diameter 120d is larger than the outer diameter 110c, and as a result, the movable clip 120 can slide axially on the outer surface of the tube 110. By configuring the diameter 120c to be larger than the diameter 120d, the opening 128 has a larger surface area that contacts the object inserted into the opening 128. A larger contact surface increases the stability of the object when it is held by the holder 100.

[0023] The second portion 120b of the movable clip 120 has a first groove 126a that guides the axial movement of the movable clip 120 along the tube 110 and defines the limit of the axial movement of the movable clip 120. The first pin 122 connected to the tube 110 extends outward into the first groove 126a and moves within the first groove 126a when the movable clip 120 extends and retracts along the tube 110. The second pin 124 connected to the movable clip 120 extends inward into a second groove 126b defined within the tube 110. The second groove 126b is hidden beneath the second portion 120b of the movable clip 120, but is shown in Figures 2B and 3A and is described in further detail below. In some embodiments, the axial movement of the movable clip 120 can be controlled using only a single pin (e.g., a first pin 122 or a second pin 124) and a single groove (e.g., a first groove 126a or a second groove 126b).

[0024] The cap 130 can be broadly considered to be a structure of arbitrary dimensions or shape, having an outer portion 130a having an outer diameter 130d (i.e., outer width) larger than the inner diameter 110c of the tube 110. Thus, the cap 130 is held on the outside of the tube 110. The cap 130 has a smaller inner portion 130b (see Figure 4) that extends inside the second end 110b of the tube 110. As will be understood from the following description, the outer portion 130a of the cap 130 is attached to the movable clip 120 and can therefore be moved (e.g., rotated) to adjust the spring force of the spring 140 in the tube 110 that is applied by the movable clip 120 on the object inserted into the opening 128. Furthermore, the outer portion 130a allows the operator of the holder 110 to pull the cap outward from the second end 110b of the tube 110 and access the spring 140. Adjusting the spring force of the spring 140 using the cap 130 at the second end 110b of the tube 110, as described herein, is beneficial in that it allows the operator to adjust the retaining force exerted by the movable clip on an object in the opening 128 without requiring the operator to remove the movable clip 120 from the first end 110a of the tube 110. For example, if the holder 100 is used to hold the probe in a high-temperature calibration bath (e.g., the calibration bath 170 in Figure 1A) or in a toxic environment, access to the probe and the first end 110a of the tube 110, which is close to the hazardous environment, can be eliminated. Using the holder 100 configured as described herein, the operator can adjust the retaining force of the movable clip 120 from the second end 110b of the tube 110 without touching the probe or the first end 110a of the tube 110. In various embodiments, the spring force (and thereby the holding force) of the holder 100 may be dynamically adjusted each time an object is placed in the holder, or the spring force may be adjusted only once at the start of a particular operation, based on the characteristics of the group of objects to be held by the holder 100 during the course of that particular operation.Thus, once the spring force is adjusted (for example, depending on the average or maximum weight, dimensions, or material of the object), the holder 100 will consistently exert the same holding force on each object to hold the object inserted into the opening 128 until the spring force of the spring 140 is readjusted.

[0025] In some embodiments, the spring force of the spring 140, and therefore the holding force of the movable clip 120, may be adjusted by an automatic control system instead of by an operator. In such examples, the spring force can be detected by a sensor, for example, a sensor placed inside the tube 110 or inside the first groove 126a. The sensor may be any type of mechanical force sensor, such as a load cell, strain gauge, or force-sensing resistor. A signal from the sensor indicating the spring force of the spring 140 can be transmitted to the control device. The control device can control the mechanical motion applied to the spring 140 or the cap 130. For example, the mechanical motion can be applied by a stepper motor. The control device can generate a control signal based on the indicated spring force and send the control signal to the stepper motor. The control device may be programmed with an executable program that generates a minimum and / or maximum spring force based on the weight and dimensions of the object to be held by the holder 100. The control device compares the indicated spring force to minimum and / or maximum thresholds. If the control device detects that the spring force of spring 140 is lower than the minimum threshold, the control signal can actuate the stepper motor to move cap 130 in the direction of increasing the spring force. Similarly, if the control device detects that the spring force is higher than the threshold, the control signal can actuate the stepper motor to move cap 130 in the direction of decreasing the spring force. This control system allows for automated and precise adjustment of the spring force, while the operator only needs to insert the object into the opening 128 of the holder, and in some cases, input the weight and / or dimensions of the object into the control device. Alternatively, the weight and / or dimensions of the object can be automatically detected by one or more sensors connected to the holder 100, which can detect the size of the opening 128 and thus detect insufficient frictional force of the movable clip 120 on the object to hold the object within the opening 128 after the movable clip 120 has been released. One or more sensors can automatically communicate the detected weight and / or dimensional data to the control device.

[0026] Figure 2B is a cross-sectional view of the holder 100 shown in Figure 2A, providing a more detailed view of the interior of the holder 100. In this figure, the cross-sectional cuts have been removed from the tube 110 and the movable clip 120 to schematically show the internal components of the holder 100. The relative dimensions of the components shown in Figure 2B may differ for different embodiments of the disclosure. As shown, the internal components of the holder 100 include a first fixture 112, a second fixture 114, and a spring 140. As described above, a portion of the cap 130, a portion of the first pin 122, and a portion of the second pin 124 are also located inside the tube 110.

[0027] In Figure 2B, the second groove 126b in the tube 110 is visible while the first groove 126a in the movable clip 120 is not shown. As described above, the second pin 124 is connected to the movable clip 120 and extends through the second groove 126b in the tube 110. Inside the tube 110, the second pin 124 penetrates the first portion 112a of the first fixture 112. Thus, the second pin 124 connects the first fixture 112 to the movable clip 120. The second portion 112b of the first fixture 112 is connected to the first end 140a of the spring 140. The first fixture 112 converts the spring force of the spring 140 to the movable clip 120 by the second pin 124. The maximum and minimum axial movement of the first fixture 112, i.e., the movable clip 120, is defined by the length of the second groove 126b. In some examples, the holder 100 may be symmetrical across the X-axis. In this way, the tube 110 includes a third groove 126c defined opposite to the second groove 126b. The second pin 124 can extend into the movable clip 120 through the third groove 126c, thus connecting the first fixture 112 to both the upper and lower portions of the movable clip 120 in the Y-axis. By connecting the second pin 124 to the movable clip 120 via the two grooves 126b, 126c, the stability of axial movement between the movable clip 120 and the first fixture 112 can be increased.

[0028] As shown in the figure, the spring 140 may be a helical coil. The spring force applied to the movable clip 120 by the spring 140, and therefore the holding force applied to the object in the opening 128 by the movable clip, can be adjusted by adjusting the effective length (number of turns of the helical coil) of the spring 140 connecting the movable clip 120 to the cap 130. Changing the number of turns of the helical coil of the spring 140 connecting the movable clip 120 to the cap 130 increases or decreases the effective length of the spring 140, and therefore the spring force of the spring 140. For example, reducing the number of turns of the helical coil over a fixed length of the tube 110 results in an extension of the spring 140 and increases the axial spring force applied by the spring 140. In contrast, increasing the number of turns of the helical coil over the same fixed length of the tube 110 decreases the axial spring force applied by the spring 140. By adjusting the spring force of the spring 140, the holding force of the movable clip 120, i.e., the holder 100, can be changed, allowing it to hold different objects of different weights and dimensions. To hold a heavy object in a stable position, the holding force can be increased by the spring 140, and the friction of the object can be increased by the movable clip 120 and the first end of the tube 110a.

[0029] The first end 140a of the spring 140 is held by the second portion 112b of the first stabilizer 112. The second end 140b of the spring 140 is held by the second portion 114b of the second stabilizer 114. The second stabilizer 114 includes the first end 114a connected to the cap 130. The first stabilizer 112 is positioned toward the first end 110a of the tube 110, and the second stabilizer is positioned toward the second end 110b of the tube 110. In various embodiments, the second end 112b of the first stabilizer 112 includes first teeth 112c extending outward between adjacent windings of the helical coil in the first end 140a of the spring 140. Similarly, the second end 114b of the second stabilizer 114 includes a second set of teeth 114c extending outward between adjacent turns of the helical coil at the second end 140b of the spring 140. In some embodiments, the first stabilizer 112 may have the same structure and be made of the same material as the second stabilizer 114. The effective length of the spring 140 can be defined as the fixed distance between the first teeth 112c of the first stabilizer 112 and the second teeth 114c of the second stabilizer 114. Thus, the spring force of the spring 140 can be adjusted by changing the number of turns of the helical coil of the spring 140 with respect to the effective length of the spring 140.

[0030] In various embodiments, the number of turns in the effective length of the spring 140 can be changed by the rotational motion of the cap 130, which is converted into the rotational motion of the second stabilizer 114. By rotating the second stabilizer 114, the second teeth 114c can move along adjacent rotations of the helical coil of the spring 140. Depending on the position of the second teeth 114c along the helical coil, the number of turns of the helical coil may be held by the second teeth 114c of the second stabilizer 114, and thus the number of turns of the helical coil in the effective length of the spring 140 may be changed. For example, clockwise rotation of the second stabilizer 114 causes the second teeth 114c to hold more turns toward the first end 114a, while decreasing the number of turns between the first teeth 112c and the second teeth 114c. This extends the helical coil of the spring 140 and increases the spring force applied by the spring 140. In contrast, the counterclockwise rotation of the second stabilizer 114 causes the second tooth 114c to release turns of the helical coil toward the first stabilizer 112, increasing the number of turns between the first tooth 112c and the second tooth 114c. This condition causes the helical coil of the spring 140 to retract and reduce the spring force applied by the spring 140. The rotational motion of the second stabilizer 114 can be applied by rotating the cap 130. The first portion 114a of the second stabilizer 114 may be inserted into a portion of the cap 130 or otherwise connected. This allows the rotational motion of the cap 130 to be converted into the rotational motion of the second stabilizer 114.

[0031] Alternatively, the second stabilizer 114 may be fixed to the second end 140b of the spring 140. Thus, the rotational motion of the cap 130 and the second stabilizer 114 can cause the helical coil of the spring 140 to rotate in the same direction. The helical coil of the spring 140 rotates beyond the second portion 112b of the first stabilizer 112, so that the second pin 124 prevents the rotational motion of the first stabilizer 112. As a result, the first teeth 112c advance along the winding of the helical coil at the first end 140a of the spring 140, increasing or decreasing the number of turns of the helical coil held by the first teeth 112c. Therefore, by rotating the cap 130 that rotates the spring 140, more turns at the first end 140a of the spring 140 may be held toward the first portion 112a of the first fixture 112 in order to reduce the number of turns in the effective length of the spring 140 and increase the spring force applied by the spring 140. Reverse rotation of the cap 130 and the spring 140 can reduce the number of turns at the first end 140a of the spring 140 held by the first teeth 112c in order to increase the number of turns of the helical coil in the effective length of the spring 140 and consequently reduce the spring force applied by the spring 140.

[0032] In some embodiments, the second end 140b of the spring 140 can be directly connected to the cap 130 without the second fixture 114. In such a situation, the rotation of the cap 130 directly rotates the helical coil of the spring 140. Alternatively, the teeth can extend inward into the tube 110 between adjacent turns of the helical coil of the spring 140. In such alternative configurations, the helical coil of the spring 140 can be rotated by the cap 130, while the inwardly extending teeth move along the turns of the helical coil, adjusting the number of turns of the helical coil in the effective length of the spring 140.

[0033] In some embodiments, the second portion 114b of the second fixture 114 may surround the second end 140b of the spring 140 (instead of being inserted inside the second end 140b of the spring 140). In such examples, the second fixture 114 may include a hollow tube having teeth extending inward inside the hollow tube. The second end 140b of the spring 140 can be inserted into the hollow tube of the second fixture 114, and the teeth of the hollow tube can move between adjacent turns of the helical coil of the spring 140. The number of turns of the spring 140 in its effective length can be adjusted in the same manner as described above by rotating the second portion 114b of the second fixture 114. In such examples, the structure and dimensions of the first fixture 112 may be the same as or different from those of the second fixture 114.

[0034] Figure 3A shows in more detail the first fixture 112 connected to the second portion 120b of the movable clip 120 at the first end 110a of the tube 110. In Figure 3A, the shape and dimensions of the second groove 126b, the third groove 126c, the first fixture 112, the first pin 122, and the second pin 124 are shown more clearly. The first end 110a of the tube 110 and half of the z-axis movable clip 120 are schematically removed, as in Figure 2B, to show the internal components of the holder 100.

[0035] In some embodiments, the second portion 120b of the movable clip 120 has a circular cross-section that may be concentric with the circular cross-section of the tube 110 along the x-axis. As shown in the figure, the second portion 120b has an inner diameter 120e that is smaller than the diameter 120d described above in Figure 2A. The inner diameter 120e is slightly larger than the outer diameter 110c of the tube 110. The difference between the diameter 120e and the outer diameter 110c allows for free axial movement of the movable clip 120 along the outer surface of the tube 110 in the x-axis. In some embodiments, the outer surface of the first end 110a of the tube 110 or the inner surface of the second portion 120b of the movable clip 120 may include a coating material to reduce friction between the opposing sliding surfaces. The coating material may be any type of anti-friction coating (AFC), such as a lubricating paint. Alternatively, different types of dry or wet lubricants can be used to reduce friction between the surfaces and allow the movable clip 120 to move freely axially along the first end 110a of the tube 110.

[0036] The first fixture 112 comprises a first portion 112a having a width 112e and a second portion 112b having a width 112f in the z-axis direction. As shown in the figure, the width 112e is greater than the width 112f and smaller than the outer diameter 110c of the tube 110. The first portion 112a includes an opening 112h that allows the first fixture 112 to be connected to the movable clip 120 via a second pin 124. The second pin 124 passes through the opening 112h and is connected to the second portion 120b of the movable clip 120. In this way, the second pin 124 moves the movable clip 120 and the first fixture 112 together when the movable clip 120 is extended or retracted. Because the width 112f of the second portion 112b is smaller than the width 112e, the second portion 112b can be inserted into the first end 140a of the spring 140. The width 112f is designed to be small enough to move freely within the helical coil of the spring 140. For this purpose, the width 112f is less than the diameter 140c of the helical coil of the spring 140. The second portion 112b includes the first teeth 112c. In some embodiments, the opposing teeth 112d may also extend from the second portion 112b, which is opposite the first teeth 112c in the z-axis. The width from the outer end of the first teeth 112c to the outer end of the opposing teeth 112d is greater than the diameter 140c of the spring 140. Thus, the teeth 112d opposite the first teeth 112c are positioned between adjacent windings of the helical coil of the spring 140. While the first embodiment of the fixture 112 can utilize only one tooth 112c, by using two teeth 112c and 112d, the first fixture 112 can hold the spring 140 with greater stability than a fixture with one tooth. Furthermore, while the first embodiment of the fixture 112 can utilize two teeth 112c and 112d aligned opposite each other, in other embodiments, the position of the first tooth 112c may not be aligned with the position of the opposing tooth 112d in the x-axis.

[0037] In some embodiments, a second portion 112b of the first stabilizer 112 is movable relative to the spring 140, allowing adjustment of the spring force applied by the spring 140. By rotating the spring 140, the first teeth 112c (and opposing teeth 112d) move between the windings of the helical coil, decreasing or increasing the number of turns held by the first stabilizer 112, thereby increasing or decreasing the number of turns in the effective length of the spring 140, and thereby decreasing or increasing the spring force applied by the spring 140.

[0038] In some embodiments in which the first portion 112a is secured by a second pin 124 that passes through the second groove 126b and the third groove 126c, the second portion 112b may be configured to be movable relative to the first portion 112a. For example, the second portion 112b may be attached to the first portion 112a having a rotatable component that allows the second portion 112b to rotate while the first portion 112a is fixed.

[0039] The second pin 124 has a length 124a along the y-axis. The length 124a is greater than the inner diameter 120e of the movable clip 120. The first end of the second pin 124 can be fixed inside a hole on the second portion 120b of the movable clip 120. The second end of the second pin 124 can also be fixed to the second portion 120b having the second hole. The second pin 124 can move axially by a length defined along the tube 110 inside the second groove 126b. In some embodiments, a third groove 126c is also present inside the tube 110 to allow the second end of the pin 124 to be attached to the second hole and move together with the movable clip 120. The second groove 126b has a length 116b along the x-axis. The length 116b restricts the axial movement of the second pin 124, and consequently restricts the axial movement of the movable clip 120. Therefore, the length 116b can be designed based on the required amount of travel of the movable clip 120. In some embodiments, the length 116b may be adjustable. In this way, a removable object can be placed inside the second groove 126b. The operator can adjust the length 116b by inserting or removing the removable object inside the second groove 126b. As a result, the amount of axial travel of the movable clip can be adjusted. The third groove 126c is designed with the same structure and dimensions as the second groove 126b and can provide consistent movement of the second pin 124 along the x-axis. Furthermore, the groove has a z-axis width that is larger than the diameter of the second pin 124, allowing the second pin 124 to move within the groove. The width of the groove, like the first fixture 112, limits the rotational movement of the movable clip 120.

[0040] The first pin 122 is fixed to the first end 110a of the tube 110. The length 122a of the first pin 122 is greater than the inner diameter 120e of the movable clip 120. In some examples, the dimensions and construction of the first pin 122 may be the same as those of the second pin 124. The lengths 122a and 124a may be the same as, or slightly different from, the outer diameter 120d of the movable clip 120 so as to be smoothly tangential to the outer surface of the second portion 120b of the movable clip 120. The first pin 122 may be positioned perpendicular to the second pin 124. The first pin 122 may extend from the first end 110 of the tube 110 through a hole on one side of the tube 110, or through two holes on opposite sides of the tube 110. The second portion 120b of the movable clip 120 includes a second groove 126b, which is not shown in Figure 3A but is shown and described in Figure 3B.

[0041] Figure 3B is an external view of the second portion 120b of the movable clip 120 described in Figure 3A. The first groove 126a is visible from the outside, while the second groove 126b is hidden beneath the second portion 120b of the movable clip 120. The first groove 126a has a length 116a. The length 116a can define the limit of the axial movement of the movable clip 120. In some embodiments, the length 116a of the first groove 126a may be the same as the length 116b of the second groove 126b. Alternatively, the length 116a may be different from the length 116b. A groove with a smaller length can restrict the axial movement of the movable clip 120. Furthermore, the first groove 126a may be positioned to restrict the axial movement of the movable clip 120 in a first direction, while the second groove 126b restricts axial movement in a second direction opposite to the first direction. In various embodiments, the holder 100 may utilize only one of the grooves 126a and 126b. In such embodiments, the holder 100 may include only the tube 110 and a first pin 122 connected to the first groove 126a, or only the movable clip 120 and a second pin 124 connected to the second groove 126b. The second portion 120b of the movable clip 120 may further include another groove on the opposite side of the first groove 126a, which is hidden in Figure 3B. The opposite groove may have the same structure and dimensions as the first groove 126a, and the first pin 122 may move within both groove 126a and the opposite groove of the movable clip 120. The total length 120bL of the second portion 120b of the movable clip 120 may be greater than or equal to the sum of the length 116a of the first groove 126a and the length 116b of the second groove 126b.

[0042] The width of the first groove 126a is greater than the diameter of the first pin 122, allowing the first pin 122 to move within the first groove 126a. The width of the first groove 126a may be the same as the width of the second groove 126b. The width of the first groove 126a in the y-axis restricts the rotational movement of the movable clip 120. By using two pins 126a and 126b, the performance and stability of the movable clip 120 can be improved. Furthermore, the reliability of the holder 100 having two pins 126a and 126b and corresponding grooves can be improved compared to a holder having only one pin. In such embodiments, one pin can function as a backup for the other pin. If one pin loosens in the corresponding groove, the other pin and groove can still provide sufficient stability and maintain the performance of the holder 100.

[0043] In some embodiments, the length 116a of the first groove 126a may be adjustable. By adjusting the length 116a, the amount of axial movement of the movable clip 120 can be adjusted. To restrict the movement of the first pin 122 within the first groove 126a, a removable object may be inserted into the first groove 126a. For example, the removable object may include an outer portion accessible to an operator and an inwardly extending portion connected to the first groove 126a. The operator can move the object along the first groove 126a to change the effective length of the first groove 126a. In some embodiments, the operator can insert the removable object to adjust the length under certain conditions and remove the object when the length 116a is sufficient and no adjustment is needed.

[0044] Figure 4 shows a more detailed view of the second fixture 114 connected to the cap 130 at the second end 110b of the tube 110. In the illustrated embodiment, the shape and dimensions of the second fixture 114 and the cap 130 are clearly shown. A portion of the second end 110b of the tube 110 in the z-axis direction is schematically removed, as in Figure 2B, to reveal the internal components of the holder 100.

[0045] The second fixture 114 comprises a first portion 114a having a width 114e and a second portion 114b having a width 114f in the z-axis direction. As shown in the figure, the width 114e is greater than the width 114f and smaller than the outer diameter 110c of the tube 110. In some examples, the structure and dimensions of the second fixture 114 may be the same as those of the first fixture 112 shown in Figure 3A. Because the width 114f of the second portion 114b is smaller than the width 114e of the first portion 114a, the second portion 114b can be inserted into the second end 140b of the spring 140. The width 114f is designed to be small enough to move freely within the helical coil of the spring 140. For this purpose, the width 114f is less than the diameter 140c of the helical coil of the spring 140. The second portion 114b includes a second tooth 114c. In some embodiments, the opposing tooth 114d may also extend from a second portion 114b that faces the second tooth 114c in the z-axis. The width from the outer end of the second tooth 114c to the outer end of the opposing tooth 114d is greater than the diameter 140c of the spring 140. Thus, the tooth 114d facing the second tooth 114c is positioned between adjacent windings of the helical coil of the spring 140. While embodiments of the second stabilizer 114 can utilize only one tooth 114c, by using two teeth 114c and 114d, the second stabilizer 114 can hold the spring 140 with greater stability than a stabilizer with one tooth. Furthermore, while embodiments of the second stabilizer 114 can utilize two teeth 114c and 114d that are aligned opposite each other, in other embodiments, the position of the second tooth 114c may not be aligned with the position of the opposing tooth 114d in the x-axis.

[0046] In some embodiments, the second portion 114b of the second stabilizer 114 is movable relative to the spring 140, allowing adjustment of the spring force applied by the spring 140. By rotating the second stabilizer 114, the second teeth 114c (and opposing teeth 114d) move between the windings of the helical coil, decreasing or increasing the number of windings held by the second stabilizer 114, thereby increasing or decreasing the number of windings in the effective length of the spring 140, and thereby decreasing or increasing the spring force applied by the spring 140. The movement of the second stabilizer 114 may be provided by the movement of the cap 130 by an external power source. For example, the rotational force on the cap 130 may be applied manually by an operator or automatically by an external control system as described above with respect to Figure 2A.

[0047] The cap 130 includes an outer portion 130a and an inner portion 130b. In embodiments where the tube 110 has a circular cross-sectional shape, the outer portion 130a and the inner portion 130b may have similar circular cross-sectional shapes. The outer portion 130a has a diameter 130d and a length 130aL. The inner portion 130b has a diameter 130e and a length 130bL. The diameter 130d is greater than or equal to the outer diameter 110c of the tube 110. The diameter 130e is less than the outer diameter 110c of the tube 110. The larger diameter 130d of the outer portion 130a allows the cap 130 to be held outside the tube 110 at the second end 110b of the tube 110. Furthermore, the length 130aL of the outer portion 130a provides sufficient surface area to facilitate gripping and twisting of the cap 130 by an operator. In some examples, the operator can pull the cap 130 away from the tube 110 by applying an outward force along the x-axis on the outer portion 130a. By pulling the cap 130 away from the tube, the operator can inspect or maintain the spring 140 and the second fixture 114, and can also manually rotate the second fixture 114 or the spring 140 to change the number of turns of the helical coil of the spring 140 in its effective length, as previously described. The smaller diameter 130e allows the inner portion 130b of the cap 130 to be inserted into the tube 110 and rotate freely to transfer any external rotational force on the cap 130 to the second fixture 114.

[0048] The inner portion 130b includes an opening 130c and a gap 130g along the y-axis in the xz-plane. The first portion 114a of the second fixture 114 can be inserted into the gap 130g to be attached to the cap 130. By connecting the first portion 114a to the cap 130 through the gap 130g, the second fixture 114 can move with the same force and in the same direction as the movement of the cap 130. In some embodiments, a pin can be passed through the opening 130c and through an opening in the first portion 114a of the second fixture 114 to secure the second fixture 114 to the cap 130. Although such a pin and opening are not shown in Figure 4, the arrangement of the pin and opening of the second fixture 114 may be similar to the arrangement of the second pin 124 and the opening 112h of the first fixture 112.

[0049] Figure 5 shows a more detailed view of the first portion 120a of the movable clip 120. The first end 110a of the tube 110 and a portion of the movable clip 120 along the z axis are schematically removed, as in Figure 2B, to show the internal shape and dimensions of the movable clip 120. The first portion 120a includes an opening 128 extending along the y axis. The opening 128 includes a first opening 128a and a second opening 128b along the x axis. The first opening 128a and the second opening 128b can be concentric with the first end 110a of the tube 110. The first opening 128a and the second opening 128b have a diameter 128d that is slightly larger than the outer diameter 110c of the tube 110. The openings 128a and 128b allow the first end 110a of the tube 110 to move within the opening 128 in the x-axis direction.

[0050] The opening 128 has a diameter 128c along the x-axis. In some embodiments, the size of the opening 128 may be symmetrical with respect to the z-axis and x-axis. In some embodiments, the opening 128 may have a diamond shape with four corners in the xz plane cross section. In some embodiments, all four corners may have the same shape and dimensions. In some embodiments, each corner of the opening 128 may be concave. The concave shape of the corners allows objects of different dimensions to be held in a consistent position within the opening 128. Alternatively, part or all of the corners may be convex to provide a directional retaining force to a relatively small object inserted into the opening 128.

[0051] In the retracted position of the movable clip 120, the first end 110a of the tube 110 moves inside the opening 128a toward the outer end of the movable clip, closing the opening 128. The operator moves the movable clip 120 axially outward from the first end 110a of the tube 110 to the extended position, opening the opening 128 as shown in Figure 5. This extends the spring 140 together with the movable clip 120, thus providing a large spring force to the movable clip 120. By extending the movable clip 120, an object can be inserted into the opening 128. After inserting an object into the opening 128, the operator can release the movable clip 120, and the spring 140 then biases the movable clip toward the retracted position. As a result, the first end 110a of the tube slides through the second opening 128 on the x-axis until the first end 11a contacts the object, thereby trapping the object between the first end 110a of the tube 110 and the inner surface of the opening 128 at the outer end of the movable clip 120. The frictional force applied to the object by the outer end of the movable clip 120 and the first end 110a holds the object within the opening 128.

[0052] Therefore, by releasing the movable clip 120, the spring 140 is retracted to its maximum possible position, which is determined by the maximum dimensions of the object in the opening 128. The maximum dimensions of the object in the opening 128 may be less than or equal to the diameter 128c of the opening 128. Thus, the first surface of the object is positioned tangentially with respect to the first end 110a of the tube 110, and the second surface of the object is positioned tangentially with respect to the inner surface of the opening 128 at the opening 128a.

[0053] In some embodiments, the cross-section of the first end 110a of the tube 110 may be concave to increase the contact surface with the object held inside the opening 128. Alternatively, the cross-section of the first end 110a of the tube 110 may be convex to increase the force applied to the central portion of the object in the opening 128, thereby improving the holder 100's ability to hold relatively small objects. In embodiments where the opening 128 has a diamond shape, different objects having different dimensions are positioned at the center inside the opening 128 along the x and z axes. Thus, the dimensions of the opening 128 are effectively adjusted based on the dimensions of the object to be held in the opening 128. The operator opens the opening 128 by extending the movable clip 120, inserts the object into the opening 128, and releases the movable clip 120 to hold the object inside the opening 128. The holding force exerted by the movable clip 120 on the object can be adjusted by adjusting the spring force on the movable clip 120, as described above.

[0054] In some embodiments, the opening in the holder may have a different shape and structure from the opening 128 described above and shown in the accompanying drawings. For example, the opening 128 may have a flat end within side 128a or side 128b of the opening. In some embodiments, the opening 128 has an opening on a first side, for example, the y-axis, while the opposite side of the opening 128 is closed. In this way, an object can be inserted into the opening 128 from the opening held by the holder 100. The object does not need to pass axially through the closed side of the opening 128. Having an opening on one side of the opening and a closed side on the other side may be beneficial when using the holder 100 in a confined space environment. The closed side prevents an object from passing through the opening 128 and potentially falling, which could damage the object or the instrument being used. In some embodiments, the opening 128 may have an opening on the z-axis. In this way, an object can be inserted into the opening 128 from the z-axis opening instead of the y-axis opening. Here again, having an opening in this manner may be beneficial when using the holder 100 in an environment where access in the y-axis direction is restricted. Furthermore, the holder 100 may rotate inside the opening 162a of the cross support 162, as shown in Figure 1B. Thus, the opening 128 can be oriented in any desired direction based on the application. For example, the opening 128 can adjustably hold an object vertically in the y-axis or horizontally in the z-axis. Furthermore, by rotating the holder 100 within the cross support 162, the opening 128 can hold an object at any desired angle in the yz plane.

[0055] A method 200 for holding an object with a holder according to this disclosure is shown as an example in the flowchart in Figure 6. The first step 202 of method 200 includes moving the movable clip 120 of holder 100 from a retracted position to an extended position relative to the tube 110 of holder 100. As described above, the movable clip 120 has an opening 128 configured to hold an object when the object is inserted into the opening 128. The opening 128 is closed by the tube 110 when the movable clip 120 is in the retracted position, and the opening 128 is open when the movable clip 120 is in the extended position.

[0056] A second step 204 of Method 200 includes inserting an object into the opening while the opening is open. A third step of Method 200 includes releasing the movable clip 120 to hold the object in the opening 128. As described above, the spring 140 inside the tube 110 biases the movable clip 120 toward the retracted position. The spring 140 has a first end 140a connected to the movable clip 120 at the first end 110a of the tube 110, and a second end 140b connected to the cap 130 at the second end 110b of the tube 100. By releasing the movable clip 120, the movable clip 120 holds the object in the opening 128 between the first end 110a of the tube 110 and the inner surface of the opening 128.

[0057] In further embodiments, the method of the present disclosure may include the following features: adjusting the spring force exerted by a spring in a tube on a movable clip by rotating a cap; causing at least one tooth of a stabilizer connected to the cap to move between adjacent turns of the helical coil forming the spring, with at least one tooth causing the stabilizer to hold an increased or decreased number of turns of the helical coil; causing at least one tooth of a stabilizer connected to the movable clip to move between adjacent turns of the helical coil forming the spring, with at least one tooth causing the stabilizer to hold an increased or decreased number of turns of the helical coil; limiting the axial travel distance of the movable clip between a contracted position and an extended position by the length of a groove defined in the tube; and moving a pin connected to the movable clip within a groove defined in the tube by moving the movable clip relative to the tube.

[0058] Figure 7 is a perspective view of a holding system 700 configured to hold multiple objects, such as measuring probes 750, in a fixed position. The holding system 700 can be used in a variety of applications, for example, having probes held within a calibration bath 770. The multiple measuring probes 750 may be measuring tools placed in an environment to measure environmental properties (e.g., fluid temperature within the calibration bath 770). For example, these properties may include temperature, pressure, humidity, vibration, density, or viscosity, or a combination thereof. In various embodiments, the holding system 700 may be used to hold objects other than the measuring probes 750. In various embodiments, each of the multiple measuring probes 750 may correspond to the measuring probe 150 shown in Figure 1A.

[0059] In some embodiments, the group of measuring probes 750 may include a main probe 752 held at the center of the other probes of the group of measuring probes 750. The main probe 752 may be a standard that provides a calibrated reference for the other probes being calibrated. For example, the main probe 752 may measure the temperature of a calibration bath 770. In this way, the temperature measured by the main probe 752 can be used as a reference for calibrating other temperature measuring probes 750 held in the same calibration bath 770 as the main probe 752.

[0060] In some embodiments, the holding system 700 includes a plurality of holders 702. Each of the plurality of holders 702 may correspond to the holder 100 shown in Figures 1A to 5. The length of each of the plurality of holders 702 may be shorter than the length of the holder 100 shown in Figures 1A to 5 in order to reduce the area occupied by the holding system 700. In various embodiments, the holding system 700 includes a vertical column 760 and cross supports 762 connecting horizontal columns 704 to the vertical column 760. The vertical column 760 and cross supports 762 may correspond to the vertical column 160 and cross supports 162 shown in Figures 1A to 1B.

[0061] The ends of the horizontal column 704 are connected to the central holding device 706. The horizontal column 704 is fixed to the cross support 762, which holds the central holding device 706 in a fixed position. In alternative embodiments, the holding system 700 may not include one or more of the vertical column 760, the cross support 762, or the horizontal column 704. In at least one alternative embodiment, a holder 702 may be used instead of the horizontal column 704 to connect the central holding device 706 to the vertical column 760. In some embodiments, multiple holders 702 may be connected to the central holding device 706 without the vertical column 760. In this configuration, the main probe 752 can fix the central holding device 706 in a vertical position. Thus, multiple holders 702 can be connected to the central holding device 706 in the same vertical position.

[0062] In various embodiments, the central retaining device 706 includes a periphery to which a plurality of holders 702 can be connected (for example, as shown in Figures 11 and 12). The central retaining device 706 also includes one or more vertically oriented openings (for example, as shown in Figure 8 and other figures herein). In some embodiments, the periphery of the central retaining device 706 includes a plurality of horizontally oriented connecting openings (for example, 802 in Figure 8) configured to connect each holder of the plurality of holders 702 to the central retaining device 706. In various embodiments, the movable clip of each holder of the plurality of holders 702 (corresponding to the movable clip 120 in Figures 2A to 2B) may include a fastener (for example, 1102 in Figure 11) connected to one of the plurality of horizontally oriented connecting openings. In various embodiments, the fastener may include any of various fastener structures, such as screws. In various embodiments, the central retaining device 706 or holder 702 may include a key (e.g., 1104 in Figure 11) that helps to fix each holder 702 (in particular, the opening 128 of the holder) in a desired position relative to another object such as a calibration bus 770. A further discussion of the key is provided with respect to Figures 11 and 12.

[0063] The embodiment in Figure 7 shows an example of a pentagonal central holding device 706 capable of simultaneously holding four holders 702 and a horizontal column 704. In embodiments where the horizontal column 704 is replaced by another holder 702, the central holding device 706 can simultaneously hold five holders. However, embodiments of the central holding device 706 are not limited to a pentagonal shape. In other embodiments, the central holding device 706 may have different polygonal shapes, such as triangles, quadrilaterals, hexagons, heptagons, octagons, nonagons, or decagons. In the case of a polygonal central holding device, each peripheral side of the polygonal shape may include one or more horizontally oriented connecting openings configured to connect one or more respective holders. Since the polygonal shape can be expanded as needed, each peripheral side of the polygon may include two or more horizontally oriented connecting openings configured to connect two or more holders.

[0064] The embodiment in Figure 7 and other embodiments described herein illustrate a system for holding a measuring probe within a calibration bath. In such embodiments, the system includes a calibration bath 770, support structures 704, 760, 762, and a central retaining device 706. The support structures include a vertical column 760 attached to the calibration bath 770, a cross support 762 that is movable along the vertical column and can be fixed to the vertical column, and a horizontal column 704 that can be fixed to the vertical column by the cross support. The cross support 762 provides vertical and horizontal positioning of the horizontal column 704 relative to the calibration bath 770. As described herein, the central retaining device 706 is connected to the horizontal column 704 and includes one or more vertically oriented openings 804 (Figure 8) and has a periphery including a plurality of horizontally oriented connecting openings 802.

[0065] In some alternative embodiments, the central retainer may have a curved shape, such as a circular or elliptical shape. In such alternative embodiments, the number of horizontally oriented connecting openings on the periphery of the central retainer is limited only by the horizontal dimensions of the circle or ellipse and the horizontal dimensions of the holders to which the horizontally oriented connecting openings are connected. For example, by increasing the diameter of the circle, the central retainer 706 may have more horizontally oriented connecting openings. In some embodiments, the central retainer 706 may include an adjustable structure. In this configuration, for example, the dimensions of the central retainer 706 may be adjusted mechanically or electrically with an electric motor. For example, an operator can adjust the dimensions of the central retainer 706 before installing it in the retaining system 700. In some embodiments, the dimensions of the central retainer 706 may be adjusted dynamically when the central retainer is installed or used in the retaining system 700.

[0066] Figure 8 shows one embodiment of the central retaining device 706 described in Figure 7. In this embodiment, the pentagonal central retaining device 806 corresponds to the central retaining device 706 described in Figure 7. The pentagonal central retaining device 806 includes a plurality of horizontally oriented connecting openings 802. In this embodiment, each side on the periphery of the pentagonal central retaining device 806 includes one horizontally oriented connecting opening 802. However, in some embodiments, the number of horizontally oriented connecting openings on each side can be two or more, based on the dimensions of the pentagonal central retaining device 806 and the size of the holders to be fixed to the connecting openings 806. As shown, each horizontally oriented connecting opening 806 is configured to connect one holder to the central retaining device 806. In some embodiments, each horizontally oriented connecting opening may be screwed in to receive a corresponding threaded fastener extending from the outer end of the movable clip of the respective holder. Furthermore, as shown in Figure 11, each side of the peripheral portion of the central retaining device may include a key 1104 (e.g., a pin or other fastening structure) that fits into a corresponding opening 1108 to fix the position of each holder in a desired position.

[0067] The pentagonal retaining device 806 also includes a plurality of vertically oriented openings. In the embodiment of Figure 8, the plurality of vertically oriented openings include two openings 804, 805. However, the number of vertically oriented openings may vary for various embodiments. In some embodiments, the vertically oriented opening 804 is a central opening configured to support a central probe, such as the main probe 752 shown in Figure 7. In some embodiments, the central opening 804 or another vertically oriented opening may connect the central retaining device 806 to an object such as a vertical column for connecting to an adjacent support device, instead of a central probe, in order to support the central retaining device 806 in a fixed position relative to an external instrument such as a calibrator. In some embodiments, the central opening may include an O-ring gasket for holding the central probe or vertical column in a fixed position. Alternatively, the central opening may include threads and pins for holding the central probe or vertical column.

[0068] In various embodiments, the multiple vertically oriented openings include one or more openings 805 on the side of the central opening. One or more openings 805 are for securing the central retaining device 806 to one or more other central retaining devices or adjacent support devices. For example, as shown in Figure 9, another central retaining device can be attached to the central retaining device 806 through a fixing opening 805. In this embodiment, a screw can enter an aligned opening 805 of another central retaining device through one opening 805 of the central retaining device.

[0069] Figure 9 shows an example of a multi-stage central retaining device 900, which includes two central retaining devices 806 and 906 connected to each other by screws 902. In this embodiment, one pentagonal retaining device 806 is connected to another pentagonal retaining device 906, while the central openings 904 of the two central retaining devices 806 and 906 are aligned. Thus, a main probe or vertical column can be connected to the central openings 904 and pass through them.

[0070] In the embodiment shown in Figure 9, the central holder 806 has a rotational offset 908 relative to the central holder 906. The rotational offset 908 allows the central holder 906 to hold multiple holders in positions between multiple holders that can be held by the central holder 806 (for example, as shown in Figure 10). In this configuration, the space for holding as many holders as possible is maximized. For example, a pentagonal holder 806 can be configured to hold one holder on each side of its periphery (thus a total of five holders), and similarly, a pentagonal holder 906 can hold one holder on each side of its periphery (thus a total of five holders). Thus, the multi-stage holder 900 shown in Figure 9 can hold a total of ten holders.

[0071] Furthermore, the multi-stage holding device 900 may be configured to hold any number of holding devices different from the number of holding devices described with respect to Figure 9. In addition, each of the central holding devices 806, 906 may have a shape other than a pentagon, for example, as described with respect to Figure 7. In various embodiments, the shape of the central holding device in each stage may differ from the shape used in the other stages. For example, one of the central holding devices, e.g., 806, may be pentagonal, while another central holding device, e.g., 906, may be circular.

[0072] Furthermore, the multi-stage holder 900 can be fitted with two or more central holders, and the multiple holders may have the same or different shapes. Additionally, the dimensions of the central holders may be enlarged on each side of each holder, for example, so that the central holders 806, 906 can hold two or more holders (an example of which is shown in Figure 12). Furthermore, if the holder has a polygonal shape, the corners of the polygon may include openings for holding holders at the corners in addition to the sides.

[0073] In some embodiments, different types of fasteners can be used to connect the central retaining units instead of screws 902. Such fasteners may include, for example, keys, clips, or welded structures. In some embodiments, each of the central retaining units 806, 906 of the multi-stage retaining unit 900 may include two or more openings for attaching different central retaining units together via screws 902 or other types of fasteners.

[0074] Figure 10 shows a holding system 1000 configured similarly to the holding system 700 described in Figure 7. The main difference between the holding system 1000 and the holding system 700 is the use of a multi-stage central holding device 900 (as shown in Figure 10) instead of a single-stage central holding device (as shown in Figure 7). In the embodiment shown in Figure 10, the multiple measuring probes 1050 include more measuring probes than the multiple measuring probes 750 in Figure 7, because of the use of the multi-stage central holding device 900. The main probe 752 passes through the central opening 904, and the eight measuring probes are supported by the central holding device 900 and held in an external device such as the calibration bus 770 shown in Figure 7.

[0075] In the embodiment shown in Figure 10, in addition to the vertical column 760, a cross support 762, a horizontal column 704 connected to one stage of the multi-stage central holding device 900, another vertical column 761, a cross support 763, and a holder 705 are connected to another stage of the multi-stage holding device 900, further adding stability to the holding system 1000. In some embodiments, to increase the stability of the holding system 1000, the holder 705 may be replaced with a horizontal column such as the horizontal column 704. In alternative embodiments, the horizontal column 704 can be replaced with a holder, and the total number of measuring probes 1050 supported by the holding system 1000 can be increased to 10 measuring probes. In yet another embodiment, the shape and size of the multi-stage holding device 900 may differ so that the holding system 1000 can hold more than 10 measuring probes, as described with respect to Figure 9.

[0076] Figure 11 shows details of how multiple holders 1100 are fixed to a hexagonal central retaining device 1106. Each of the multiple holders 1100 may correspond to a holder 100, as shown in Figure 2A. The main difference between holder 100 and each of the multiple holders 1100 is the fixing structure 1102 that extends from each end of the multiple holders 1100. The fixing structure 1102 allows each of the multiple holders 1100 to be fitted with the hexagonal central retaining device 1106. In various embodiments, the hexagonal central retaining device 1106 may have a shape other than hexagon, such as a pentagonal central retaining device 806 as shown in Figure 8, or other possible shapes as described with respect to Figure 7.

[0077] The fixing structure 1102 includes posts or screws extending outward from each end of the plurality of holders 1100 and fitting into corresponding horizontally oriented connecting openings on the periphery of the hexagonal central retaining device 1106. In various embodiments, the central retaining device 1106 may include outwardly extending keys 1104 (e.g., posts) that fit into corresponding openings 1108 on each end of the plurality of holders 1100. These keys 1104 hold each holder in a specific direction relative to the central retaining device 1106. Thus, each of the plurality of holders 1100 can hold an object in the correct position when an object is inserted and held within the movable clip of the respective holder. Alternatively, the keys 1104 may be part of the holder 1100 and may extend outward from each end of the holder 1100 to the corresponding opening on the periphery of the central retaining device 1106. In any case, the key 1104 holds each of the multiple holders 1100 in a specific direction relative to the central holding device 1106.

[0078] In some embodiments, a suitable key structure may include magnets such as permanent magnets, temporary magnets, and electromagnets. For example, an electrical circuit may be connected to the electromagnet of the key structure. In this configuration, turning on the electrical circuit activates an electromagnet that attracts the corresponding metal structure or the opposite magnet, thereby holding each holder 1102 in a specific direction relative to the central retaining device 1106. The electrical circuit may include any electrical components that generate a constant current and supply it to a coil to activate the electromagnet when the circuit is switched on.

[0079] Figure 12 shows an embodiment of a hexagonal central retaining device 1206, which has substantially the same structure as the hexagonal retaining device 1106 but with different dimensions. In this embodiment, the dimensions of the hexagonal central retaining device 1206 are enlarged compared to the hexagonal central retaining device 1106 in Figure 11. Each side of the central retaining device 1206 can hold two holders 1200. Thus, the total number of holders that can be attached to the central retaining device 1206 is increased from six holders (as shown in Figure 11) to twelve holders. In this embodiment, each of the holders 1200 corresponds to the holder 1100 shown in Figure 11. In various embodiments, the dimensions of the central retaining device 1206 can be enlarged to hold two or more movable clips 1200 on each side. Furthermore, depending on the size and shape of the central retaining device 1206, one or more holders 1200 may be connected to the corners of the hexagonal central retaining device 1206. Therefore, the central holding device 1206 can hold more than 12 holders 1200.

[0080] In some embodiments, the dimensions of the central holder 1206 may be adjustable. In some embodiments, the dimensions of the central holder 1206 may be automatically adjusted using an electric motor, such as a stepper motor, which operates a mechanical expander that increases or decreases the dimensions of the central holder. In this configuration, the control device can control the stepper motor to precisely change the dimensions of the central holder 1206, thereby increasing or decreasing the capacity of the central holder 1206 to hold different numbers of holders.

[0081] In light of the aforementioned disclosures, various additional embodiments become apparent, as illustrated by the following examples.

[0082] Example 1: A device for holding multiple objects, comprising a central holding device and a plurality of holders that can be simultaneously connected to the central holding device, wherein each of the plurality of holders includes a movable clip with an opening into which an object can be inserted and held, and a spring that applies a spring force to the movable clip, the spring force being adjustable to hold the object in the opening of the movable clip.

[0083] Example 2: The apparatus according to Example 1, wherein each of the plurality of holders further comprises a tube having a first end and a second end opposite to the first end, the movable clip being at the first end of the tube and the cap being at the second end of the tube, the cap being movable to adjust the spring force of the spring to the movable clip.

[0084] Example 3: The apparatus according to Example 2, wherein each of the plurality of holders includes a first fixing device in the tube, the first fixing device connects the movable clip to the spring and a second fixing device in the tube, and the second fixing device connects the cap to the spring.

[0085] Example 4: The apparatus according to any one of Examples 1 to 3, wherein the central holding device includes a peripheral portion to which the plurality of holders can be connected, and the peripheral portion includes a plurality of horizontally oriented connecting openings configured to connect each of the plurality of holders to the central holding device.

[0086] Example 5: The apparatus according to Example 4, wherein the central holding device further includes one or more vertically oriented openings, and at least one of the one or more vertically oriented openings is configured to hold an object that supports the central holding device in a fixed position relative to an external device.

[0087] Example 6: The apparatus according to Example 4 or Example 5, wherein the movable clip of the holder includes a fastener that can be operated to connect the holder to each of the horizontally oriented connecting openings of the peripheral portion of the central retaining device.

[0088] Example 7: The apparatus according to any one of Examples 1 to 6, wherein the central holding device is a first central holding device, and the apparatus further comprises a second central holding device that can be attached to the first central holding device, and each of the first and second central holding devices is configured to connect to the plurality of holders of the plurality of holders.

[0089] Example 8: The apparatus according to Example 7, wherein the second central holding device includes a peripheral portion to which multiple holders of the plurality of holders can be connected, and the second central holding device is attachable to the first central holding device with a rotational offset relative to the first central holding device.

[0090] Example 9: The apparatus according to Example 8, wherein, when the second central retaining device is attached to the first central retaining device, the second central retaining device includes one or more vertically oriented openings that align with one or more vertically oriented openings of the first central retaining device.

[0091] Example 10: The apparatus according to Example 9, wherein the second central retaining device is attached to the first central retaining device by one or more fasteners that are held vertically within corresponding vertically oriented openings of the first and second central retaining devices.

[0092] Example 11: The apparatus according to Example 9 or Example 10, wherein at least one vertically oriented opening of the first and second central holding devices is configured to hold an object located in the center of the first and second central holding devices.

[0093] Example 12: The apparatus according to any one of Examples 1 to 11, further comprising a key structure including a key extending from the central retaining device or holder, and a corresponding opening in the holder or the central retaining device configured to receive the key, wherein when the holder is connected to the central retaining device, the key is received into the corresponding opening and operated to hold the holder in a particular direction with respect to the central retaining device.

[0094] Example 13: A system for holding multiple measuring probes, comprising a support structure including a calibration bath, a vertical column attached to the calibration bath, a cross support movable along the vertical column and fixable to the vertical column, and a horizontal column fixable to the vertical column by the cross support, wherein the cross support provides vertical and horizontal positioning of the horizontal column relative to the calibration bath. The system further includes a central holding device connected to the horizontal column, the central holding device having a periphery including one or more vertically oriented openings and a plurality of horizontally oriented connecting openings.

[0095] Example 14: The system according to Example 13, further comprising a plurality of holders that can be simultaneously connected to the central holding device, each of the plurality of holders comprising a tube having a first end and a second end opposite to the first end, and a movable clip at the first end of the tube, the movable clip having an opening into which an object can be inserted and held, a cap at the second end of the tube, a spring inside the tube, and a first fixing device inside the tube, the first fixing device connecting the movable clip to the spring and the second fixing device inside the tube, the second fixing device connecting the cap to the spring, and the cap being movable to adjust the spring force of the spring in order to hold the object in the opening of the movable clip.

[0096] Example 15: The system according to Example 14, wherein each of the plurality of holders is configured to hold at least one of the plurality of measuring probes around the peripheral portion of the central holding device.

[0097] Example 16: The system according to Example 14 or Example 15, wherein the horizontal column connected to the central holding device is one of the holders of the plurality of holders.

[0098] Example 17: The system according to any one of Examples 13 to 16, wherein the central holding device is a first central holding device, and the system further comprises a second central holding device having a periphery including one or more vertically oriented openings and a plurality of horizontally oriented connecting openings, wherein the second central holding device is attached to the first central holding device in a stacking configuration, and each of the first and second central holding devices is configured to simultaneously connect a plurality of holders of a plurality of holders.

[0099] Example 18: The system according to Example 17, wherein the support structure is a first support structure, the horizontal column is a first horizontal column, and the system further comprises a second support structure having a second horizontal column connected to the second central holding device.

[0100] Example 19: The system according to Example 18, wherein the first horizontal column connected to the first central holding device and the second horizontal column connected to the second central holding device are each of the holders of the plurality of holders.

[0101] Example 20: The system according to any one of Examples 17 to 19, wherein at least one vertically oriented opening in each of the first and second central retaining devices is aligned to hold a measuring probe in the center of the first and second central retaining devices, and at least one vertically oriented opening located on the side of the center is arranged to hold a fastener for attaching the first central retaining device to the second central retaining device.

[0102] The various embodiments described above can be combined to provide yet another embodiment. These and other modifications may be made to the embodiments in light of the detailed description above. In general, the terms used in the following claims should not be construed as limiting the claims to the specific embodiments disclosed in the specification and claims, but rather as encompassing all possible embodiments, along with the entire scope of equivalents for which such claims are entitled.

Claims

1. A holder for holding an object, A tube extending axially between a first end and a second end opposite to the first end, A movable clip located at the first end of the tube, wherein the movable clip is capable of sliding axially on the outer surface of the tube between a contracted position and an extended position, and in the extended position, the movable clip is positioned axially outward from the end face of the first end of the tube and has an opening through which an object can be inserted and which can hold the object inside, A holder comprising a spring inside the tube, which is connected to the movable clip, A holder in which, when the movable clip is moved toward the extended position, the spring exerts a spring force that biases the movable clip toward the retracted position, the object is inserted into the opening, and when the movable clip is moved toward the retracted position, the object is held within the opening by contacting the end face of the first end of the tube with the inner surface of the opening.

2. The holder according to claim 1, further comprising a cap at the second end of the tube, wherein the cap is rotatable to adjust the spring force of the spring.

3. The holder according to claim 1, wherein the spring force exerted by the spring pulls the inner surface of the opening toward the end face of the first end of the tube.

4. A first fixing device inside the tube, the first fixing device connecting the movable clip to the spring, The holder according to claim 2, further comprising a second fixing device inside the tube, the second fixing device having a first end connected to the cap and a second end that engages with the spring.

5. The aforementioned spring includes a helical coil, The second end of the second fixture has at least one tooth extending between adjacent windings of the helical coil, The holder according to claim 4, wherein at least one tooth is configured to move along the helical coil as the cap is rotated, thereby increasing or decreasing the number of turns of the helical coil held by the second holder.

6. The aforementioned spring includes a helical coil, The first fixing device has a first end connected to the movable clip and a second end that engages with the spring, The second end of the first fixture has at least one tooth extending between adjacent windings of the helical coil, The holder according to claim 4, wherein the at least one tooth is configured to move along the helical coil to increase or decrease the number of turns of the helical coil held by the first fixture.

7. The holder according to claim 1, further comprising a pin connected to the tube, wherein the pin extends into a groove defined in the movable clip and guides the movement of the movable clip along the tube.

8. The holder according to claim 1, further comprising a pin connected to the movable clip, wherein the pin extends through a groove defined in the tube, connecting the movable clip to a first fixing device in the tube, and the first fixing device connecting the movable clip to the spring.

9. The holder according to claim 8, wherein the pin penetrates the first fixture and prevents the first fixture from rotating relative to the tube.

10. The holder according to claim 1, wherein the inner surface of the opening is shaped such that when the object is inserted into and held in the opening, it guides the object to a consistent position within the opening.

11. A method for holding an object with the holder described in Claim 1, Moving the movable clip of the holder from the retracted position to the extended position relative to the tube of the holder, wherein the opening of the movable clip is configured to hold the object when the object is inserted into the opening and the movable clip is released, and moving the movable clip When the movable clip is moved toward the extended position, inserting the object into the opening, A method comprising releasing the movable clip and holding the object within the opening, wherein the spring in the tube has a first end connected to the movable clip at the first end of the tube and a second end connected to a cap at the second end of the tube, and releasing the movable clip causes the movable clip to hold the object within the opening between the end face of the first end of the tube and the inner surface of the opening.

12. The method according to claim 11, further comprising rotating the cap to adjust the spring force exerted by the spring in the tube on the movable clip.

13. The method according to claim 12, wherein by rotating the cap, at least one tooth of a stabilizer connected to the cap moves between adjacent windings of the helical coil forming the spring, and the at least one tooth increases or decreases the number of windings of the helical coil held by the stabilizer.

14. The method according to claim 11, further comprising: rotating the spring to move at least one tooth of a stabilizer connected to the movable clip between adjacent turns of the helical coil forming the spring, the at least one tooth increasing or decreasing the number of turns of the helical coil held by the stabilizer.

15. The method according to claim 11, wherein the axial travel distance of the movable clip between the contracted position and the extended position is determined by the length of a groove defined in the tube.

16. The method according to claim 15, wherein the movable clip is moved relative to the tube, thereby moving a pin connected to the movable clip within the groove defined in the tube.

17. A system for holding a measuring probe within a calibration bus, A support structure, A vertical column fixed to the calibration bus, A cross support that is movable along the vertical column and can be fixed to the vertical column, A support structure comprising, A holder that can be fixed to the vertical column by the cross support, wherein the cross support allows for vertical and horizontal positioning of the holder relative to the calibration bath, and the holder comprises, A tube having a first end and a second end opposite to the first end, A movable clip located at the first end of the tube, which is movable between a contracted position and an extended position, and in the extended position, is positioned axially outward from the first end of the tube, The cap at the second end of the tube, The tube comprises a spring, The spring is connected to the movable clip, and when the movable clip is moved toward the extended position, the spring exerts a spring force that pulls the movable clip toward the retracted position. The movable clip has an opening through which the measuring probe is inserted and which can hold the measuring probe inside, A system wherein the cap is movable to adjust the spring force of the spring in order to hold the measuring probe within the opening.

18. A first fixing device inside the tube, the first fixing device connecting the movable clip to the spring, The tube further comprises a second fixing device which connects the cap to the spring, The system according to claim 17, wherein the cap is rotatable to adjust the spring force of the spring.

19. The system according to claim 18, wherein the spring includes a helical coil, the spring force of the spring is adjustable by at least one tooth in the tube, the at least one tooth extending between adjacent turns of the helical coil and moving along the helical coil to increase or decrease the number of turns of the helical coil that exert the spring force on the movable clip.

20. The system according to claim 19, wherein the opening has an inner surface shaped such that when the measuring probe is inserted into and held within the opening, the measuring probe is guided to a consistent position within the opening.

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