Patent US4563215A successfully refreshed from Google Patents.
Patent US3297971A successfully refreshed from Google Patents.
US3297971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load cell
Assignee: Lockheed Martin Corp
•
Filing: 1965-01-21
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Granted: 1967-01-10
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Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Gindes Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:53
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A LOAD CELL FOR MEASURING COMPRESSION AND TENSION LOADS BY MEANS OF THE ELONGATION OF A TENSILE MEMBERTHE COMBINATION COMPRISING A HOLLOW BODY PORTION HAVING CYLINDRICAL WALLS AND AN END SECTION, AN END CAP ATTACHED TO THE END OF SAID BODY PORTION OPPOSITE TO SAID END SECTION, AN AXIAL FIRST BORE IN SAID END SECTION, A HOLLOW CYLINDRICAL COLUMN ATTACHED TO THE CENTER OF SAID END CAP AND EXTENDING INTO SAID HOLLOW BODY PORTION IN CO-EXTENSIVE ALIGNMENT WITH SAID CYLINDRICAL WALLS AND TERMINATING ADJACENT SAID END SECTION, SAID CYLINDRICAL COLUMN HAVING A REDUCED CENTER PORTION, A CENTRAL AND AXIAL SECOND BORE EXTENDING THROUGH SAID END CAP AND INTO SAID HOLLOW CYLINDRICAL COLUMN AND TERMINATING BELOW SAID REDUCED CENTER PORTION, STRAIN GAGE MEANS BONDED ONTO AND AROUND THE OUTSIDE SURFACE OF SAID REDUCED CENTER PORTION, MEANS FOR APPLYING A LOAD TO THE BOTTOM OF THE SECOND MENTIONED BORE, AND MEANS FOR RETAINING SAID COLUMN SUBSTANTIALLY ON THE CENTRAL AXIS TO THEREBY PREVENT RADIAL DEFLECTION, WHEREBY THE REDUCED CENTER PORTION IS STRETCHED PROPORTIONAL TO THE APPLIED LOAD.
Claim 2
Dependent Claim
175 words
A LOAD CELL FOR MEASURING COMPRESSION AND TENSION LOADS BY MEANS OF THE ELONGATION OF A TENSILE MEMBERTHE COMBINATION COMPRISING A HOLLOW BODY PORTION HAVING CYLINDRICAL WALLS AND AN END SECTION, AN END CAP ATTACHED TO THE END OF SAID BODY PORTION OPPOSITE TO SAID END SECTION, AN AXIAL FIRST BORE IN SAID END SECTION, A HOLLOW CYLINDRICAL COLUMN ATTACHED TO THE CENTER OF SAID END CAP AND EXTENDING INTO SAID HOLLOW BODY PORTION IN CO-EXTENSIVE ALIGNMENT WITH SAID CYLINDRICAL WALLS AND TERMINATING ADJACENT SAID END SECTION, SAID CYLINDRICAL COLUMN HAVING A REDUCED CENTER PORTION, A CENTRAL AND AXIAL SECOND BORE EXTENDING THROUGH SAID END CAP AND INTO SAID HOLLOW CYLINDRICAL COLUMN AND TERMINATING BELOW SAID REDUCED CENTER PORTION, STRAIN GAGE MEANS BONDED ONTO AND AROUND THE OUTSIDE SURFACE OF SAID REDUCED CENTER PORTION, MEANS FOR APPLYING A LOAD TO THE BOTTOM OF THE SECOND MENTIONED BORE, AND MEANS FOR RETAINING SAID COLUMN SUBSTANTIALLY ON THE CENTRAL AXIS TO THEREBY PREVENT RADIAL DEFLECTION, WHEREBY THE REDUCED CENTER PORTION IS STRETCHED PROPORTIONAL TO THE APPLIED LOAD.
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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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |