US3137915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrodynamic coupling
Assignee: Borg Warner Corp
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Filing: 1959-12-23
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Granted: 1964-06-23
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Expires: 1979-12-23
Abstract
No abstract record available.
Inventors
- 👤 Richard L Smirl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:25
CPC Classifications
F; F16; F16D; F16D33/00; F16D33/18; F16D33/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/4933; Y10T29/49826; Y10T29/49863; Y10T29/49876; Y10T29/53; Y10T29/53657
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
72 words
IN A METHOD OF MAKING A VANED ELEMENT OF A HYDRODYNAMIC COUPLING DEVICE, THE STEPS COMPRISING FORMING A HOLLOW ANNULAR, SEMI-TORODIAL SHELL OF FLEXIBLE MATERIAL; FORMING A PLURALITY OF VANES; FORMING SPACED PORTIONS IN BOTH SAID SHELL AND VANES IN A MANNER TO FACILITATE CONNECTION OF SAID SHELL PORTIONS TO SAID VANE PORTIONS, THE SPACED PORTIONS ON SAID VANES BEING SPACED FARTHER APART THAN THE SPACED PORTIONS OF SAID SHELL; APPLYING PRESSURE
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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |