US3141232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing strain gages
Assignee: Microdot Inc
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Filing: 1960-06-08
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Granted: 1964-07-21
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Expires: 1980-06-08
Abstract
No abstract record available.
Inventors
- 👤 John D Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:42
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/2287; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49089; Y10T29/49091; Y10T29/49103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE METHOD FOR PRODUCING A STRAIN GAGE THAT COMPRISES PROVIDING AN ELONGATED RESISTANCE ELEMENT THE RESISTANCE OF WHICH CHANGES IN ACCORDANCE WITH FORCES APPLIED LONGITUDINALLY THERETO AND HAVING NON-STRAIN RESPONSIVE LEAD WIRES ATTACHED TO EACH END THEREOF, APPLYING TO THE SURFACE OF SAID ELEMENT A CONTINUOUS, SOLID, ADHERENT COVERING OF ELECTRICAL INSULATING MATERIAL, DISPOSING THE RESULTING INSULATION-COVERED RESISTANCE ELEMENT WITHIN A THIN, READILY DEFORMABLE TUBULAR METAL SHELL WITH SAID LEAD WIRES EXTENDING THEREFROM, PERMANENTLY DEFORMING SAID SHELL INWARDLY AGAINST SAID INSULATING MATERIAL AND THEREBY CLAMPING THE INSULATING MATERIAL FIRMLY BETWEEN SAID SHELL AND SAID RESISTANCE ELEMENT, WHEREBY THE RESISTANCE ELEMENT IS MECHANICALLY COUPLED TO THE SHELL TO RECEIVE, VIA SAID INSULATING MATERIAL, FORCES APPLIED LONGITUDINALLY TO THE SHELL, AND CONNECTING SAID LEAD WIRES TO MEANS CAPABLE OF DETECTING A CHANGE IN THE RESISTANCE OF SAID ELEMENT.
Claim 2
Independent Claim
136 words
THE METHOD FOR PRODUCING A STRAIN GAGE THAT COMPRISES PROVIDING AN ELONGATED RESISTANCE ELEMENT THE RESISTANCE OF WHICH CHANGES IN ACCORDANCE WITH FORCES APPLIED LONGITUDINALLY THERETO AND HAVING NON-STRAIN RESPONSIVE LEAD WIRES ATTACHED TO EACH END THEREOF, APPLYING TO THE SURFACE OF SAID ELEMENT A CONTINUOUS, SOLID, ADHERENT COVERING OF ELECTRICAL INSULATING MATERIAL, DISPOSING THE RESULTING INSULATION-COVERED RESISTANCE ELEMENT WITHIN A THIN, READILY DEFORMABLE TUBULAR METAL SHELL WITH SAID LEAD WIRES EXTENDING THEREFROM, PERMANENTLY DEFORMING SAID SHELL INWARDLY AGAINST SAID INSULATING MATERIAL AND THEREBY CLAMPING THE INSULATING MATERIAL FIRMLY BETWEEN SAID SHELL AND SAID RESISTANCE ELEMENT, WHEREBY THE RESISTANCE ELEMENT IS MECHANICALLY COUPLED TO THE SHELL TO RECEIVE, VIA SAID INSULATING MATERIAL, FORCES APPLIED LONGITUDINALLY TO THE SHELL, AND CONNECTING SAID LEAD WIRES TO MEANS CAPABLE OF DETECTING A CHANGE IN THE RESISTANCE OF SAID ELEMENT.
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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |