US3293585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion body
Assignee: Siemens and Halske AG
•
Filing: 1964-07-02
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Granted: 1966-12-20
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Expires: 1984-07-02
Abstract
No abstract record available.
Inventors
- 👤 Horn Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:12
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/2206; G01L1/2218
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN EXPANSION ELEMENT COMPRISING A BODY IN THE FORM OF A SUBSTANTIALLY FLAT, SPIRAL SPRING HAVING A PLURALITY OF TURNS POSITIONED IN THE SAME PLANE SUSPENDED BETWEEN A FIXED MOUNTING AND A DRIVING MEMBER AND WHICH IS ELASTICALLY DEFORMABLE BY TORQUE ACTING THEREON, EXPANSION-SENSITIVE RESISTANCES SUPPORTED ON SURFACES OF SAID BODY ALONG A SUBSTANTIAL LENGTH THEREOF IN INSULATING RELATIONSHIP THERETO, SAID RESISTANCES BEING SO DISPOSED ON SAID BODY THAT ROTATION OF ONE END OF SAID BODY WITH RESPECT TO THE OTHER END, UPON THE APPLICATION OF TORQUE FORCES THERETO, IS REFLECTED DIRECTLY IN A POLAR ORIENTED STRESS OPERATIVE TO EFFECT A CHANGE IN THE RESISTANCE VALUES OF SAID RESISTANCES.
Claim 2
Dependent Claim
109 words
AN EXPANSION ELEMENT COMPRISING A BODY IN THE FORM OF A SUBSTANTIALLY FLAT, SPIRAL SPRING HAVING A PLURALITY OF TURNS POSITIONED IN THE SAME PLANE SUSPENDED BETWEEN A FIXED MOUNTING AND A DRIVING MEMBER AND WHICH IS ELASTICALLY DEFORMABLE BY TORQUE ACTING THEREON, EXPANSION-SENSITIVE RESISTANCES SUPPORTED ON SURFACES OF SAID BODY ALONG A SUBSTANTIAL LENGTH THEREOF IN INSULATING RELATIONSHIP THERETO, SAID RESISTANCES BEING SO DISPOSED ON SAID BODY THAT ROTATION OF ONE END OF SAID BODY WITH RESPECT TO THE OTHER END, UPON THE APPLICATION OF TORQUE FORCES THERETO, IS REFLECTED DIRECTLY IN A POLAR ORIENTED STRESS OPERATIVE TO EFFECT A CHANGE IN THE RESISTANCE VALUES OF SAID RESISTANCES.
References Cited (Backward Citations)
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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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |