US3237919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil spring compressor
Assignee: Individual
•
Filing: 1961-11-20
•
Granted: 1966-03-01
•
Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Mackay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:25
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/14; B25B27/30; B25B27/302; B25B27/304; B60; B60G; B60G17/00; B60G17/005; B60G17/02; B60G17/021; B60G2206/00; B60G2206/01; B60G2206/90; B60G2206/92; B60G2206/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A COIL SPRING COMPRESSOR COMPRISING A THREADED SHAFT MEANS FOR HOLDING A COIL SPRING IN POSITION WIHT SAID SHAFT EXTENDING LONGITUDINALLY WITHIN SAID COIL SPRING, SAID MEANS COMPRISING SPACED ELEMENTS MOUNTED ON SAID SHAFT AND ADAPTED TO ENGAGE CONVOLUTIONS OF SAID SPRINGS, ONE OF SAID ELEMENTS COMPRISING A SUBSTANTIALLY HOLLOW DOMESHAPED MEMBER, HAVING A CONCAVE PORTION, SAID PORTION ENGAGING THE CONVOLUTIONS OF ONE OF SAID SPRING, SECONE MEANS THREADEDLY ENGAGING SAID SHAFT AND DISPOSED WITH RELATION THERETO, SAID SECOND MEANS FREELY ROTATABLY
Claim 2
Dependent Claim
82 words
A COIL SPRING COMPRESSOR COMPRISING A THREADED SHAFT MEANS FOR HOLDING A COIL SPRING IN POSITION WIHT SAID SHAFT EXTENDING LONGITUDINALLY WITHIN SAID COIL SPRING, SAID MEANS COMPRISING SPACED ELEMENTS MOUNTED ON SAID SHAFT AND ADAPTED TO ENGAGE CONVOLUTIONS OF SAID SPRINGS, ONE OF SAID ELEMENTS COMPRISING A SUBSTANTIALLY HOLLOW DOMESHAPED MEMBER, HAVING A CONCAVE PORTION, SAID PORTION ENGAGING THE CONVOLUTIONS OF ONE OF SAID SPRING, SECONE MEANS THREADEDLY ENGAGING SAID SHAFT AND DISPOSED WITH RELATION THERETO, SAID SECOND MEANS FREELY ROTATABLY
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |