Patent US4807629A successfully refreshed from Google Patents.
Patent US3112922A successfully refreshed from Google Patents.
US3112922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized air spring
Assignee: Chain Belt Co
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Filing: 1960-02-15
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Granted: 1963-12-03
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Expires: 1980-02-15
Abstract
No abstract record available.
Inventors
- 👤 Musschoot Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:02
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/02; F16F9/04; F16F9/0454
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
51 words
IN A RESILIENT ELEMENT FOR A VIBRATORY SYSTEM, IN COMBINATION, AN EXPANSIBLE CHAMBER HAVING FLEXIBLE SIDE WALLS AND RIGID ENDS, RIGID MEMBERS RIGIDLY ATTACHED TO SAID RIGID ENDS AND HAVING OPPOSING SURFACES NORMAL TO SAID ENDS, AND AN ELASTOMER SPRING INTERPOSED BETWEEN AND ENGAGED WITH SAID OPPOSING SURFACES, WHEREBY RELATIVE LATER-
References Cited (Backward Citations)
US1579185A
Cited
US1579188A
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GB524287A
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US2305814A
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US2356962A
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GB698953A
Cited
US2747862A
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US2912234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |