US3084926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compression springs
Assignee: Individual
•
Filing: 1957-07-10
•
Granted: 1963-04-09
•
Expires: 1977-07-10
Abstract
No abstract record available.
Inventors
- 👤 Jerome H Lemelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:29
CPC Classifications
A; A63; A63H; A63H3/00; A63H3/04; A63H9/00; B; B29; B29C; B29C45/00; B29C45/17; B29C45/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A COMPRESSION SPRING MEMBER OF UNITARY STRUCTURE, SAID SPRING MEMBER BEING INJECTION MOLDED OF THERMOPLASTIC MATERIAL AND HAVING A CENTRAL DEFORMABLE COIL PORTION OF SPIRAL SHAPE, END FITTING PORTIONS OF DIFFERENT SHAPE THAN THE CONVOLUTIONS OF THE COIL PORTION AND INTEGRALLY MOLDED AT BOTH ENDS OF SAID CENTRAL COIL PORTION, ONE OF SAID END FITTING PORTIONS BEING SUBSTANTIALLY CYLINDRICALLY SHAPED AND HAVING PORTIONS OF GREATER EXTERNAL DIAMETER THAN THE OUTSIDE DIAMETER OF THE CONVOLUTIONS OF THE COIL PORTION, THE INSIDE CYLINDRICAL SURFACE OF SAID END FITTING ADAPTED FOR FRICTIONALLY RETAINING SAID SPRING MEMBER BY ENGAGEMENT AGAINST THE OUTSIDE SURFACE OF A FURTHER MEMBER.
Claim 2
Dependent Claim
103 words
A COMPRESSION SPRING MEMBER OF UNITARY STRUCTURE, SAID SPRING MEMBER BEING INJECTION MOLDED OF THERMOPLASTIC MATERIAL AND HAVING A CENTRAL DEFORMABLE COIL PORTION OF SPIRAL SHAPE, END FITTING PORTIONS OF DIFFERENT SHAPE THAN THE CONVOLUTIONS OF THE COIL PORTION AND INTEGRALLY MOLDED AT BOTH ENDS OF SAID CENTRAL COIL PORTION, ONE OF SAID END FITTING PORTIONS BEING SUBSTANTIALLY CYLINDRICALLY SHAPED AND HAVING PORTIONS OF GREATER EXTERNAL DIAMETER THAN THE OUTSIDE DIAMETER OF THE CONVOLUTIONS OF THE COIL PORTION, THE INSIDE CYLINDRICAL SURFACE OF SAID END FITTING ADAPTED FOR FRICTIONALLY RETAINING SAID SPRING MEMBER BY ENGAGEMENT AGAINST THE OUTSIDE SURFACE OF A FURTHER MEMBER.
References Cited (Backward Citations)
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US646413A
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US2275526A
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US2747859A
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US2875779A
Cited
US2903242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |