US4600066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load cell apparatus
Assignee: Mettler Toledo International Inc
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Filing: 1985-01-28
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Granted: 1986-07-15
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Expires: 2005-01-28
Abstract
Abstract A scale plate with one or more load cell structures formed integrally therewith. Each load cell includes a flexure beam with strain sensing means mounted thereon and a fixed end merging with the plate. A support member has a free end and another end that is fixed to and merges with the other end of the beam. The load is applied between the plate and the support member. The support member permits the point of load application to be selected for improved output response of the load cell. A second flexure beam may be provided to counter any torsion effects on the first mentioned beam. The beam and support member are formed by cutting slots in the scale plate.
Inventors
- 👤 Neil C. Griffen
- 👤 Stephen A. Patoray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:25
CPC Classifications
G; G01; G01G; G01G3/00; G01G3/12; G01G3/14; G01G3/1402; G01G3/1412
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
215 words
Weighing apparatus comprising a base plate, foot means connected to said base plate, a transducer plate having a plurality of force transducer means formed integrally therein, each transducer means comprising first and second flexure beams and a support member formed in said transducer plate, said support member having a free end and having another end merging with an end of each beam, each beam having its other end merging with said transducer plate, strain sensing means on said first beam, said first and second flexure beams and support member being formed by a first slot in said transducer plate, a second slot in said transducer plate parallel to and spaced from said first slot, a third slot in said transducer plate at an angle to said first and second slots and connecting with at least one of said first and second slots, a fourth slot in said transducer plate, and force transmitting means between each of said support members and said base plate, said force transmitting means including a first cup connected to said support member, a second cup connected to said base plate and a ball adapted to fit between said first and second cups to permit limited relative movement of said cups in a direction parallel to the plane of said support member.
Claim 2
Dependent Claim
215 words
Weighing apparatus comprising a base plate, foot means connected to said base plate, a transducer plate having a plurality of force transducer means formed integrally therein, each transducer means comprising first and second flexure beams and a support member formed in said transducer plate, said support member having a free end and having another end merging with an end of each beam, each beam having its other end merging with said transducer plate, strain sensing means on said first beam, said first and second flexure beams and support member being formed by a first slot in said transducer plate, a second slot in said transducer plate parallel to and spaced from said first slot, a third slot in said transducer plate at an angle to said first and second slots and connecting with at least one of said first and second slots, a fourth slot in said transducer plate, and force transmitting means between each of said support members and said base plate, said force transmitting means including a first cup connected to said support member, a second cup connected to said base plate and a ball adapted to fit between said first and second cups to permit limited relative movement of said cups in a direction parallel to the plane of said support member.
Claim 3
Dependent Claim
39 words
Weighing apparatus as claimed in claim 1 wherein said strain sensing means comprises a pair of longitudinally spaced strain gages and said force transmitting means is located on said support member between and spaced laterally from said strain gages.
Claim 4
Dependent Claim
17 words
Weighing apparatus as claimed in claim 1 wherein said second beam is parallel to said first beam.
Claim 5
Dependent Claim
15 words
Weighing apparatus as claimed in claim 1 wherein said support member is between said beams.
Claim 6
Dependent Claim
15 words
Weighing apparatus as claimed in claim 1 including strain sensing means on said second beam.
Claim 7
Dependent Claim
49 words
Weighing apparatus as claimed in claim 5 wherein said strain sensing means on one beam comprises a strain gage mounted on the beam adjacent its fixed end, and said strain sensing means on the other beam comprises a strain gage mounted on the other beam adjacent it other end.
Claim 8
Dependent Claim
34 words
Weighing apparatus as claimed in claim 6 wherein said strain sensing means on each of said first and second beams comprises a pair of longitudinally spaced strain gages mounted on each of said beams.
Claim 9
Dependent Claim
22 words
Weighing apparatus as claimed in claim 1 wherein said third slot extends substantially at right angles to said first and second slots.
Claim 10
Dependent Claim
46 words
Weighing apparatus as claimed in claim 8 wherein said transducer plate has an edge parallel to said first slot, said first slot and said transducer plate edge defining said first beam, said third slot joining said first and second slots and defining therewith said support member.
Claim 11
Dependent Claim
122 words
Weighing apparatus comprising a plate having a plurality of force transducers formed integrally therein, each transducer being formed by first and second spaced apart, parallel slots, a third slot extending from an edge of said plate substantially at right angles to said first and second slots and connecting with one of them, and a fourth slot extending from an edge of said plate substantially parallel to said first and second slots, said slots forming first and second flexure beams each merging at one end with said plate and a support member having a free end and another end merging with the other end of at least one of said first and second flexure beams, and strain sensing means on said first beam.
Claim 12
Dependent Claim
122 words
Weighing apparatus comprising a plate having a plurality of force transducers formed integrally therein, each transducer being formed by first and second spaced apart, parallel slots, a third slot extending from an edge of said plate substantially at right angles to said first and second slots and connecting with one of them, and a fourth slot extending from an edge of said plate substantially parallel to said first and second slots, said slots forming first and second flexure beams each merging at one end with said plate and a support member having a free end and another end merging with the other end of at least one of said first and second flexure beams, and strain sensing means on said first beam.
Claim 13
Dependent Claim
116 words
Weighing apparatus comprising a plate having a plurality of force transducers formed integrally therein, each transducer being formed by first and second spaced apart, parallel slots, a third slot at substantially right angles to said first and second slots and connecting with one of them, and a fourth slot parallel to said third slot and connecting with at least one of said first and second slots, said slots forming first and second flexure beams each merging at one end with said plate and a support member having a free end and another end merging with the other ends of said first and second flexure beams and strain sensing means on at least one of said beams.
Claim 14
Dependent Claim
116 words
Weighing apparatus comprising a plate having a plurality of force transducers formed integrally therein, each transducer being formed by first and second spaced apart, parallel slots, a third slot at substantially right angles to said first and second slots and connecting with one of them, and a fourth slot parallel to said third slot and connecting with at least one of said first and second slots, said slots forming first and second flexure beams each merging at one end with said plate and a support member having a free end and another end merging with the other ends of said first and second flexure beams and strain sensing means on at least one of said beams.
Claim 15
Dependent Claim
15 words
Weighing apparatus as claimed in claim 10 including strain sensing means on said second beam.
References Cited (Backward Citations)
CA674463A
Cited
US3123166A
Cited
JPS54107372A
Cited
JPS54124769A
Cited
DE2929137A1
Cited
US4506746A
Cited
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 |