US4600067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weighing apparatus with additional assembly for torsion compensation
Assignee: Individual
•
Filing: 1983-11-29
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Granted: 1986-07-15
•
Expires: 2003-11-29
Abstract
Abstract A weight scale in particular a bath room scale contains strain gauges. To make the scale of simple design while being reliable and precise a single bar has at its ends a load receiving plate and support base. At least two strain gauges are fastened to the bar and are sensitive to bending of the bar. At least one another strain gauge is fastened to the bar, this being sensitive to twisting of the bar.
Inventors
- 👤 Francis Artigue
- 👤 Roland Cormier
- 👤 Christian Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:01
CPC Classifications
G; G01; G01G; G01G3/00; G01G3/12; G01G3/14; G01G3/1402; G01G3/1404; G01G19/00; G01G19/44
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
126 words
A weight measuring apparatus comprising: a support base; a load receiving plate; a single bar including opposite ends, one end being connected to said load receiving plate, and the opposite end being connected on said support base; at least two first strain gauge means fastened to the bar for producing a first signal corresponding to bending of the bar due to an applied load; at least one second strain gauge means fastened to the bar for producing a second signal corresponding to twisting of the bar due to the applied load; and means for combining the first and second signals produced by said first and second strain gauge means to eliminate a component of said first signal resulting from deformation of the bar due to torsion.
Claim 2
Dependent Claim
126 words
A weight measuring apparatus comprising: a support base; a load receiving plate; a single bar including opposite ends, one end being connected to said load receiving plate, and the opposite end being connected on said support base; at least two first strain gauge means fastened to the bar for producing a first signal corresponding to bending of the bar due to an applied load; at least one second strain gauge means fastened to the bar for producing a second signal corresponding to twisting of the bar due to the applied load; and means for combining the first and second signals produced by said first and second strain gauge means to eliminate a component of said first signal resulting from deformation of the bar due to torsion.
Claim 3
Dependent Claim
32 words
Apparatus according to claim 1, wherein said at least two first strain gauge means include identical strain gauges operating together with the bar in zones of the same section of the bar.
Claim 4
Dependent Claim
12 words
Apparatus according to claim 1, wherein the bar is of uniform cross-section.
Claim 5
Dependent Claim
12 words
Apparatus according to claim 2, wherein the bar is of uniform cross-section.
Claim 6
Dependent Claim
13 words
Apparatus according to claim 1, wherein the cross-section of the bar is variable.
Claim 7
Dependent Claim
13 words
Apparatus according to claim 2, wherein the cross-section of the bar is variable.
Claim 8
Dependent Claim
70 words
Apparatus according to claim 1, wherein said at least two first strain gauge means and said at least one second strain gauge means each include a single strain gauge, the gauge of each first strain gauge means being positioned parallel to the general longitudinal direction of the bar and the gauge of each second strain gauge means being attached to the bar at an incline to said general longitudinal direction.
Claim 9
Dependent Claim
70 words
Apparatus according to claim 2, wherein said at least two first strain gauge means and said at least one second strain gauge means each include a single strain gauge, the gauge of each first strain gauge means being positioned parallel to the general longitudinal direction of the bar and the gauge of each second strain gauge means being attached to the bar at an incline to said general longitudinal direction.
Claim 10
Dependent Claim
12 words
Apparatus according to claim 7, wherein the angle of incline is 45°.
Claim 11
Dependent Claim
12 words
Apparatus according to claim 8, wherein the angle of incline is 45°.
Claim 12
Dependent Claim
19 words
Apparatus according to claim 7, comprising two longitudinal gauges on the same line parallel to said general longitudinal direction.
Claim 13
Dependent Claim
19 words
Apparatus according to claim 8, comprising two longitudinal gauges on the same line parallel to said general longitudinal direction.
Claim 14
Dependent Claim
13 words
Apparatus according to claim 1, wherein there are four first strain gauges means.
Claim 15
Dependent Claim
13 words
Apparatus according to claim 2, wherein there are four first strain gauges means.
Claim 16
Dependent Claim
28 words
Apparatus according to claim 1, wherein there are two separate second strain gauges means tilted with respect to the general longitudinal direction of the bar at opposite angles.
Claim 17
Dependent Claim
28 words
Apparatus according to claim 2, wherein there are two separate second strain gauges means tilted with respect to the general longitudinal direction of the bar at opposite angles.
Claim 18
Dependent Claim
28 words
Apparatus according to claim 11, wherein there are two separate second strain gauges means tilted with respect to the general longitudinal direction of the bar at opposite angles.
Claim 19
Dependent Claim
28 words
Apparatus according to claim 12, wherein there are two separate second strain gauges means tilted with respect to the general longitudinal direction of the bar at opposite angles.
Claim 20
Dependent Claim
28 words
Apparatus according to claim 13, wherein there are two separate second strain gauges means tilted with respect to the general longitudinal direction of the bar at opposite angles.
Claim 21
Dependent Claim
28 words
Apparatus according to claim 14, wherein there are two separate second strain gauges means tilted with respect to the general longitudinal direction of the bar at opposite angles.
Claim 22
Dependent Claim
57 words
Apparatus according to claim 1, wherein said means for combining includes a circuit of the extensometric bridge type including a first branch with at least two first strain gauge means connected in series and a second branch with at least one second strain gauge means, and said second branch being connected in parallel with said first branch.
Claim 23
Dependent Claim
57 words
Apparatus according to claim 2, wherein said means for combining includes a circuit of the extensometric bridge type including a first branch with at least two first strain gauge means connected in series and a second branch with at least one second strain gauge means, and said second branch being connected in parallel with said first branch.
Claim 24
Dependent Claim
29 words
Apparatus according to claim 1, wherein said load receiving plate includes a plate and a supporting structure integrally connected with one end of the bar for supporting said plate.
Claim 25
Dependent Claim
29 words
Apparatus according to claim 2, wherein said load receiving plate includes a plate and a supporting structure integrally connected with one end of the bar for supporting said plate.
Claim 26
Dependent Claim
11 words
Apparatus according to claim 3, wherein said uniform cross-section is polygonal.
Claim 27
Dependent Claim
11 words
Apparatus according to claim 3, wherein said uniform cross-section is curved.
Claim 28
Dependent Claim
20 words
Apparatus according to claim 3, is of the class of profiles comprising the shape of T, H, I or U.
Claim 29
Dependent Claim
10 words
Apparatus according to claim 2, wherein said bar is solid.
Claim 30
Dependent Claim
10 words
Apparatus according to claim 2, wherein said bar is hollow.
Claim 31
Dependent Claim
10 words
Apparatus according to claim 3, wherein said bar is solid.
Claim 32
Dependent Claim
10 words
Apparatus according to claim 3, wherein said bar is hollow.
Claim 33
Dependent Claim
21 words
Apparatus according to claim 21, wherein said second branch includes a corrective resistor in series with a second strain gauge means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |