US3158939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extensometer
Assignee: ThyssenKrupp Budd Co
•
Filing: 1963-08-30
•
Granted: 1964-12-01
•
Expires: 1983-08-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry E Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:26
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
AN EXTENSOMETER FOR MEASURING TENSILE AND COMPRESSIVE DEFORMATIONS IN A TEST PIECE, COMPRISING: A RIGID FRAME ADAPTED TO BE PLACED ADJACENT TO THE TEST PIECE; FIRST MEANS CONNECTED TO SAID FRAME AND ADAPTED TO CONNECT SAID FRAME TO THE TEST PIECE AT A FIRST GAGE POINT; A CANTILEVER BEAM HAVING ONE END FIXED TO SAID FRAME AND A FREE END MOVABLE RELATIVE TO SAID FRAME, SAID BEAM BEING ADAPTED TO EXTEND SUBSTANTIALLY PERPENDICULAR TO THE TEST PIECE WHEREBY SAID FREE END IS LOCATED ADJACENT TO THE TEST PIECE; STRAIN GAGE MEANS BONDED TO SAID BEAM ADJACENT SAID ONE END THEREOF; AND SECOND MEANS MOUNTED ON SAID FREE END AND ADAPTED TO CONNECT SAID FREE END TO THE TEST PIECE AT A SECOND GAGE POINT SPACED A PREDETERMINED DISTANCE FROM THE FIRST GAGE POINT WHEREBY TENSILE AND COMPRESSIVE DEFORMATIONS OF THE TEST PIECE BETWEEN SAID GAGE POINTS MOVES SAID FREE END RELATIVE TO SAID FRAME IN OPPOSITE DIRECTIONS FROM AN UNSTRESSED POSITION.
Claim 2
Dependent Claim
161 words
AN EXTENSOMETER FOR MEASURING TENSILE AND COMPRESSIVE DEFORMATIONS IN A TEST PIECE, COMPRISING: A RIGID FRAME ADAPTED TO BE PLACED ADJACENT TO THE TEST PIECE; FIRST MEANS CONNECTED TO SAID FRAME AND ADAPTED TO CONNECT SAID FRAME TO THE TEST PIECE AT A FIRST GAGE POINT; A CANTILEVER BEAM HAVING ONE END FIXED TO SAID FRAME AND A FREE END MOVABLE RELATIVE TO SAID FRAME, SAID BEAM BEING ADAPTED TO EXTEND SUBSTANTIALLY PERPENDICULAR TO THE TEST PIECE WHEREBY SAID FREE END IS LOCATED ADJACENT TO THE TEST PIECE; STRAIN GAGE MEANS BONDED TO SAID BEAM ADJACENT SAID ONE END THEREOF; AND SECOND MEANS MOUNTED ON SAID FREE END AND ADAPTED TO CONNECT SAID FREE END TO THE TEST PIECE AT A SECOND GAGE POINT SPACED A PREDETERMINED DISTANCE FROM THE FIRST GAGE POINT WHEREBY TENSILE AND COMPRESSIVE DEFORMATIONS OF THE TEST PIECE BETWEEN SAID GAGE POINTS MOVES SAID FREE END RELATIVE TO SAID FRAME IN OPPOSITE DIRECTIONS FROM AN UNSTRESSED POSITION.
References Cited (Backward Citations)
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CH127311A
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US2452860A
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US2543429A
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US2588630A
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US2611966A
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US2869854A
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US2834591A
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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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |