US3190633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil spring joint
Assignee: Individual
•
Filing: 1963-08-05
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Granted: 1965-06-22
•
Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 Charles A Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:35
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/02; F16F1/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
157 words
A COMBINATION COMPRISING (A) COILED SPRING STRUCTURE HAVING: (1) A COILED END PORTION (2) A SECOND COILED END PORTION, (B) AN ELEMENT CONFINED TO THE MAJOR PART OF A SINGLE TURN OF A HELIX AND HAVING CONFRONTING SHOULDERS THROUGHOUT THE LENGTH THEREOF, SAID SHOULDERS BEING ARRANGED PARALLELLY OF THE HELIX, SAID END PORTIONS BEING THREADED INTO SAID ELEMENT, THE DIAMETER OF SAID ELEMENT LONGITUDINALLY OF THE AXIS OF THE HELIX BEING CONFINED TO APPROXIMATELY TWICE THE INSIDE MINOR DIAMETER OF THE ELEMENT TRANSVERSELY OF THE AXIS OF THE HELIX, AND THE MATERIAL FORMING THE COIL SPRINGS HAVING A DIAMETER APPROXIMATELY THE MINOR INSIDE DIAMETER OF THE ELEMENT, THE OUTER DIAMETER OF THE COILED END PORTIONS OF THE SPRING STRUCTURE, WHICH ARE RECEIVED BY THE ELEMENT, BEING LESS THAN THE ADJACENT PARTS OF THE SPRING STRUCTURE, AND THE OUTSIDE DIAMETER OF THE ELEMENT BEING SUBSTANTIALLY THE SAME AS THE DIAMETER OF SAID ADJACENT PARTS OF THE SPRING STRUCTURE.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |