US3754610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load cell
Assignee: Torrid Corp
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Filing: 1971-07-29
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Granted: 1973-08-28
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Expires: 1991-07-29
Abstract
Abstract This invention relates to load measurement devices of the type generally referred to as load cells in which the deformation of a material subjected to a stress is electrically measured, and particularly to a load cell in the form of a pin adapted to be employed in a clevis assembly to support a load to be measured.
Inventors
- 👤 O Paelian
- 👤 R Kellar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:13
CPC Classifications
G; G01; G01G; G01G3/00; G01G3/12; G01G3/14; G01G3/1402; G01G3/1404
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
154 words
A load cell in the form of an elongated pin comprising: A. first and second outer end load coupling regions adapted to directly connect said pin to one side of a load applied perpendicularly to the longitudinal axis of said pin; B. a center load coupling region adapted to couple said pin to the other side of said applied load; C. first and second loaded regions of reduced cross section compared to the outer end load coupling regions and said center load coupling region, interconnecting, respectively, said first outer end load coupling region to said center load coupling region and said second outer end load coupling region to said center load coupling region; and D. at least one strain sensitive element generally lying within a plane within at least one of said loaded regions and wherein said plane is parallel to the line of direction of force to be measured by said load cell.
Claim 2
Dependent Claim
154 words
A load cell in the form of an elongated pin comprising: A. first and second outer end load coupling regions adapted to directly connect said pin to one side of a load applied perpendicularly to the longitudinal axis of said pin; B. a center load coupling region adapted to couple said pin to the other side of said applied load; C. first and second loaded regions of reduced cross section compared to the outer end load coupling regions and said center load coupling region, interconnecting, respectively, said first outer end load coupling region to said center load coupling region and said second outer end load coupling region to said center load coupling region; and D. at least one strain sensitive element generally lying within a plane within at least one of said loaded regions and wherein said plane is parallel to the line of direction of force to be measured by said load cell.
Claim 3
Dependent Claim
152 words
A load cell in the form of an elongated pin comprising: A. first and second outer end load coupling regions adapted to couple said pin to one side of an applied load; B. a center load coupling region adapted to couple said pin to the other side of said applied load; C. first and second loaded regions interconnecting, respectively, said first outer end load coupling region to said center load coupling region and said second outer end load coupling region to said center load coupling region; D. at least one strain sEnsitive element generally lying within a plane within at least one of said loaded regions and wherein said plane is parallel to the line of direction of force to be measured by said load cell; and E. wherein one of said load coupling regions includes indexing means indicating the line of direction of force to be measured by said load cell.
Claim 4
Dependent Claim
152 words
A load cell in the form of an elongated pin comprising: A. first and second outer end load coupling regions adapted to couple said pin to one side of an applied load; B. a center load coupling region adapted to couple said pin to the other side of said applied load; C. first and second loaded regions interconnecting, respectively, said first outer end load coupling region to said center load coupling region and said second outer end load coupling region to said center load coupling region; D. at least one strain sEnsitive element generally lying within a plane within at least one of said loaded regions and wherein said plane is parallel to the line of direction of force to be measured by said load cell; and E. wherein one of said load coupling regions includes indexing means indicating the line of direction of force to be measured by said load cell.
Claim 5
Dependent Claim
36 words
A load cell as set forth in claim 2 wherein there is included at least one plane outer surface on one of said loaded regions for supporting an adjacent and parallel positioned said strain sensitive element.
Claim 6
Dependent Claim
67 words
A load cell as set forth in claim 3 wherein a said plane outer surface is positioned below the surrounding outer surface of said loaded region and said elongated pin includes a passageway connecting between at least one end of said pin and a said plane outer surface whereby electrical leads may be connected from a said end of said pin to a said strain sensitive element.
Claim 7
Dependent Claim
31 words
A load cell as set forth in claim 4 wherein said loaded regions are of reduced cross section compared to the outer-end load coupling regions and said center load coupling region.
Claim 8
Dependent Claim
125 words
A load cell in the form of an elongated pin comprising: A. first and second outer end load coupling regions adapted to couple said pin to one side of an applied load; B. a center load coupling region adapted to couple said pin to the other side of said applied load; C. first and second rectangular regions of reduced cross section interconnecting, respectively, said first outer end load coupling region to said center load coupling region and said second outer end load coupling region to said center load coupling region; and D. at least one strain sensitive element generally lying within a plane within each said rectangular region and wherein a said plane is perpendicular to one of the outer surfaces of said rectangular regions.
Claim 9
Dependent Claim
125 words
A load cell in the form of an elongated pin comprising: A. first and second outer end load coupling regions adapted to couple said pin to one side of an applied load; B. a center load coupling region adapted to couple said pin to the other side of said applied load; C. first and second rectangular regions of reduced cross section interconnecting, respectively, said first outer end load coupling region to said center load coupling region and said second outer end load coupling region to said center load coupling region; and D. at least one strain sensitive element generally lying within a plane within each said rectangular region and wherein a said plane is perpendicular to one of the outer surfaces of said rectangular regions.
Claim 10
Dependent Claim
47 words
A load cell as set forth in claim 6 wherein said strain sensitive elements are connected in a bridge configuration and further comprise a source of power connected to one set of opposite bridge terminals and a galvanometer connected across the remaining set of opposite bridge terminals.
Claim 11
Dependent Claim
34 words
A load cell as set forth in claim 6 further comprising first load coupling means connected to said outer load coupling regions and second load coupling means connected to said center load coupling region.
Claim 12
Dependent Claim
29 words
A load cell as set forth in claim 8 wherein said first load coupling means comprises a clevis and said second load coupling means comprises an eye shaped coupler.
Claim 13
Dependent Claim
14 words
A load cell as set forth in claim 6 wherein said pin is cylindrical.
Claim 14
Dependent Claim
35 words
A load cell as set forth in claim 10 wherein each said rectangular region is elongated and said strain sensitive elements are positioned in a plane perpendicular to elongated side surfaces of said rectangular regions.
Claim 15
Dependent Claim
29 words
A load cell as set forth in claim 10 wherein the lengths of said rectangular region are of shorter dimension than dimensions of the adjoining said load coupling regions.
Claim 16
Dependent Claim
29 words
A load cell as set forth in claim 6 wherein said strain sensitive elements are positioned and housed within cavities extending inward from the ends of said rectangular regions.
Claim 17
Dependent Claim
53 words
A load cell as set forth in claim 13 wherein strain sensitive elements are elongated and positioned with the line of maximum sensitivity of strain sensitive elements in opposite said cavities, of a said rectangular region, oriented 45* with respect to the axis of said pin and 90* with respect to each other.
Claim 18
Dependent Claim
68 words
A load cell as set forth in claim 13 wherein said pin includes an elongated, axial cavity extending from one end of said pin for substantially the length of said pin and wherein openings extend between said cavities housing said strain sensitive elements and said axial cavity and wherein electrical leads from said strain sensitive elements may be positioned to connect external circuitry to said strain sensitive elements.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |