US3179399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High energy damping spring
Assignee: Individual
•
Filing: 1963-01-31
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Granted: 1965-04-20
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Expires: 1983-01-31
Abstract
No abstract record available.
Inventors
- 👤 Richard T Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:33
CPC Classifications
B; B64; B64G; B64G1/00; B64G1/22; B64G1/24; B64G1/38; B64G1/34; F; F16; F16F; F16F15/00; F16F15/02; F16F15/04; F16F15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
AN ULTRA-WEAK ABSORPTION SPRING COMPRISING, A BERYLLIUM-COPPER CORE HAVING A DIAMETER OF BETWEEN 0.005 AND 0.01 INCH, SAID CORE BEING FORMED IN A HELICAL COIL OF GENERALLY FRUSTO-CONICAL SHAPE, A LAYER OF MECHANICALLY SOFT MATERIAL ELECTROLYTICALLY DEPOSITED ON SAID CORE, AND
Claim 2
Dependent Claim
41 words
AN ULTRA-WEAK ABSORPTION SPRING COMPRISING, A BERYLLIUM-COPPER CORE HAVING A DIAMETER OF BETWEEN 0.005 AND 0.01 INCH, SAID CORE BEING FORMED IN A HELICAL COIL OF GENERALLY FRUSTO-CONICAL SHAPE, A LAYER OF MECHANICALLY SOFT MATERIAL ELECTROLYTICALLY DEPOSITED ON SAID CORE, AND
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |