Sliding gauge

• US 5,029,402 A
• Filed: 10/19/1988
• Issued: 07/09/1991
• Est. Priority Date: 12/24/1986
• Status: Expired due to Fees

• Current Assignee: PAV Praezisions-Apparatebau AG
• Original Assignee: PAV Praezisions-Apparatebau AG
• Inventors: Kessler, Jurg, Lazecki, Rene, Wossner, Albrecht, Thony, Christian E.
• Primary Examiner(s): HAROIAN, HARRY
• Application Number:
  US07/250,621
• Time in Patent Office: 993 Days
• Field of Search: 33/783, 33/784, 33/806, 33/810, 33/811, 33/812, 33/819, 33/820
• US Class Current: 33/784
• CPC Class Codes: G01B 3/002 Details
• CPC Class Codes: G01B 3/205 provided with a counter for digital indication of the measured dimension

Abstract

A sliding gauge for measuring animal carcasses for slaughter, tree trunks, whole cheese or other objects. The sliding gauge includes a rod and a slide mounted for sliding movement on the rod by a form-locking guide arrangement. The rod and the slide are each equipped with a jaw projecting therefrom at a right angle, such that the jaws are parallel. Longitudinal markings and at least one length sensor are included with the rod and slide. A force sensor on one of the jaws may operate to disable further operation of the length sensor such that repeatable measurements may be made of soft or elastic articles. The length sensor is connected to electronic circuit components, which may include a microcomputer, for evaluation and processing of the signals supplied by the length sensor. Replaceable motherboards or memories allow the use of different processing programs for different applications, and the replacement of full memory devices such that the sliding gauge may continue to be used while the previous data is evaluated by a separate computer.

Claims

1. A slide caliper comprising a rod and a slide, arranged on said rod for being displaced in a longitudinal direction thereon, by means of form-locking guiding means, said rod and said slide being equipped each with one jaw projecting at a right angle therefrom and extending in parallel to each other, said rod and said slide comprising between them at least one longitudinal marking interacting with at least one length sensor, said sensor being connected to electronic circuit components arranged on said slide, for evaluating signals received from said sensor, wherein said circuit components are mounted on said slide by means for detachable connection means, and are designed as a microcomputer with a keyboard and with display elements, said microcomputer being provided with a mounting plate having one portion designed as part of said form-locking guiding means and having attaching means for being attached to a guiding part of said slide, with another portion of said slide forming another part of said form-locking guiding means.

2. The slide caliper of claim 1, wherein said attaching means has elastic hooks to click said mounting plate upon said guiding part.

3. The slide caliper of claim 1, wherein said sensor is provided at said microcomputer.

4. The slide caliper of claim 1, wherein said sensor is arranged on said slide and said detachable connection means is provided with electric connection means.

5. The slide caliper of claim 1, wherein said rod has a cross-section having the shape of a double prism with a high rectangular central portion and flat trapezoidal upper and lower portion.

6. The slide caliper of claim 5, wherein said longitudinal marking is provided on a broad side of said rectangular center portion.

7. The slide caliper of claim 5, wherein said longitudinal marking is provided on an upper and/or lower face of said trapezoidal upper and lower sections.

8. The slide caliper of claim 6, wherein several longitudinal markings are provided on several sides of said rod.

9. The caliper of claim 7, wherein said longitudinal markings are provided in said rod, in covered-up arrangement.

10. The slide caliper of claim 7, wherein said rod is designed as a hollow section comprising a cavity, said longitudinal marking being provided on an inner wall of said cavity.

11. The slide caliper of claim 7, wherein said slide is provided with inserts in sliding faces thereof, and said rod is in contact only with said inserts, by inclined surfaces of its trapezoidal upper and/or lower sections.

12. The slide caliper of claim 11, wherein said rod is made from a plastic material and said inserts in said sliding surface consist of a metal, for example a ground non-ferrous metal.

13. The slide caliper of claim 1, wherein said slide is provided with a passage opening for said rod, said passage opening being equipped with said form-locking guiding means only by sections in an area where said rod enters and leaves said slide, respectively.

14. The slide caliper of claim 1, wherein said slide and said rod are made from a carbon fiber/epoxy compound (CFP).

15. The slide caliper of claim 14, wherein said guiding part and said mounting plate, as well as said jaws, are made from a solid carbon fiber/epoxy compound, while said rod is designed as a hollow profile consisting of a carbon fiber/epoxy compound.

16. A slide caliper comprising a rod and slide arranged on said rod for being displaced thereon in a longitudinal direction, by means of form-locking guiding means, said rod and said slide being equipped each with one jaw projecting at a right angle therefrom and extending in parallel to each other, said rod and said slide comprising between them at least one longitudinal marking interacting with at least one length sensor, said sensor being connected to electronic circuit components arranged on said slide, for evaluating signals received from said sensor, said circuit components comprising a detachable memory configured as an electronic component operatively mounted on a printed circuit board, said printed circuit board being detachably and operatively inserted in a groove of a cavity of a mini-computer mounted on said slide.

17. The slide caliper of claim 16, wherein said memory is an ultra-violet light erasable circuit component.

18. The slide caliper of claim 16, wherein said memory is an electronic component arranged on a printed circuit board, said printed circuit board being inserted into a groove of a cavity of a mini-computer arranged on said slide.

19. The slide caliper of claim 18, wherein said cavity has a substantially cylindrical shape and can be tightly sealed by means of a screw cap.

20. The slide caliper of claim 19, wherein two cavities for batteries, and for said printed circuit board, respectively, are arranged side by side along one longitudinal edge of said mini-computer having a substantially square shape, said cavities being adapted to be tightly sealed by means of screw caps.

21. The slide caliper of claim 20, wherein said mini-computer comprises a housing consisting of two half shells, grooves for accommodating seals being provided in a contact plane of said half shells, said contact plane intersecting said cavities in an axial direction.

22. The slide caliper of claim 21, wherein a lower half shell is provided with a handle projecting therefrom, preferably, at an angle of 90°

.

23. A slide caliper comprising a rod and a slide arranged on said rod for being displaced thereon in a longitudinal direction, by means of form-locking guiding means, said rod and said slide being equipped each with one jaw projecting at a right angle therefrom and extending in parallel to each other, said rod and said slide comprising between them at least one longitudinal marking interacting with at least one length sensor, said sensor being connected to electronic circuit components arranged on said slide, for evaluating signals received from said sensor, wherein one longitudinal edge of one of said jaws is provided with force sensor means for sensing a compression force exerted on said jaws when a measuring object is enclosed between said jaws, and for providing a force sensor signal indicating the value of the compression force.

24. The slide caliper of claim 23, wherein said force sensor means is connected to a threshold stage whose output signal reflects a momentary value of said length sensor when a predetermined threshold value of the force sensor signal is exceeded.

25. A slide caliper comprising a rod and a slide arranged on said rod for being displaced thereon in a longitudinal direction, by means of form-locking guiding means, said rod and said slide being equipped each with one jaw projecting at a right angle therefrom and extending in parallel to each other, said rod and said slide comprising between them at least one length sensor cooperating with a longitudinal marking on said rod, said sensor being connected to electronic circuit components arranged on said slide, for evaluating signals received from said sensor, wherein a position sensor coacts with a position mark between said slide and said rod such that said position sensor generates a zero signal for said circuit components when said jaws are in contact with each other.

26. The slide caliper of claim 25, wherein said longitudinal marking has a limited extension along said longitudinal direction and said position sensor is positioned such that when said jaws get into contact with each other, said position sensor gets out of interaction with said longitudinal marking.