Patent US3497044A successfully refreshed from Google Patents.
US3497044A
Expired / Lapsed
US
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Torque responsive brake with pivoted friction inserts
Assignee: Formsprag Co
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Filing: 1967-08-14
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Granted: 1970-02-24
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Expires: 1987-08-14
Abstract
No abstract record available.
Inventors
- 👤 Hmars Kalns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:33
CPC Classifications
F; F16; F16D; F16D43/00; F16D43/02; F16D43/20; F16D43/21; F16D43/211
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1617745A
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US1512862A
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US2635714A
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US3034619A
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US3051282A
Cited
US3102618A
Cited
US3219154A
Cited
US3329242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |