Patent US2636861A successfully refreshed from Google Patents.
US3274658A
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Clamping devices
Assignee: DOWN BROS AND MAYER AND PHELPS Ltd
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Filing: 1964-11-30
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Granted: 1966-09-27
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Expires: 1984-11-30
Abstract
No abstract record available.
Inventors
- 👤 Pile Charles Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:26
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/12; A45; A45D; A45D8/00; A45D8/14; A61B17/122; A61B17/1227; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44641; Y10T24/4494
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A CLAMPING DEVICE COMPRISING A PAIR OF CO-OPERATING CLAMPING MEMBERS AND AT LEAST THREE SUPERPOSED COILS FORMING A COIL SPRING, ONE OF THE OUTERMOST OF SAID COILS BEING SECURED, IN THE REGION OF THE FREE END OF SAID OUTERMOST COIL, TO ONE END OF ONE SAID COILS BEING SECURED, AND THE OTHER OF THE OUTERMOST OF SID COILS BEING SECURED, IN THE REGION OF THE FREE END OF SAID OTHER OUTERMOST COIL, TO ONE END OF THE OTHER OF SAID CLAMPING MEMBERS, AT LEAST A PORTION OF AT LEAST ONE OF SAID OUTERMOST COILS BEING INCLINED OUTWARDLY FROM A PLANE PARALLEL TO THE PLANE OF THE ADJACENT COIL OF SAID SPRING TO FORM A LEVER THAT, WHEN BROUGHT TOWARDS SAID ADJACENT COIL, CAUSES SAID CLAMPING MEMBERS TO SEPARATE AGAINST A RESTORING FORCES ARISING AT LEAST IN PART FROM TORSION IN THE PORTION OF THE SPRING BETWEEN THE SAID OUTERMOST COILS.
Claim 2
Dependent Claim
150 words
A CLAMPING DEVICE COMPRISING A PAIR OF CO-OPERATING CLAMPING MEMBERS AND AT LEAST THREE SUPERPOSED COILS FORMING A COIL SPRING, ONE OF THE OUTERMOST OF SAID COILS BEING SECURED, IN THE REGION OF THE FREE END OF SAID OUTERMOST COIL, TO ONE END OF ONE SAID COILS BEING SECURED, AND THE OTHER OF THE OUTERMOST OF SID COILS BEING SECURED, IN THE REGION OF THE FREE END OF SAID OTHER OUTERMOST COIL, TO ONE END OF THE OTHER OF SAID CLAMPING MEMBERS, AT LEAST A PORTION OF AT LEAST ONE OF SAID OUTERMOST COILS BEING INCLINED OUTWARDLY FROM A PLANE PARALLEL TO THE PLANE OF THE ADJACENT COIL OF SAID SPRING TO FORM A LEVER THAT, WHEN BROUGHT TOWARDS SAID ADJACENT COIL, CAUSES SAID CLAMPING MEMBERS TO SEPARATE AGAINST A RESTORING FORCES ARISING AT LEAST IN PART FROM TORSION IN THE PORTION OF THE SPRING BETWEEN THE SAID OUTERMOST COILS.
References Cited (Backward Citations)
US2888938A
Cited
US2928152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |