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Patent US3159221A successfully refreshed from Google Patents.
US3159221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp ring
Assignee: RTX Corp
•
Filing: 1963-04-29
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Granted: 1964-12-01
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Leonard L Gaubis
- 👤 Frederick A Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:33
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/02; B64C11/04; B64C11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN COMBINATION, A PROPELLER BLADE HAVING A SHANK PORTION, AN INTEGRAL FLANGE ON SAID SHANK PORTION FOR SUPPORTING A THRUST BEARING, A PROJECTING RIDGE HAVING AN INCLINED SIDE ON SAID SHANK PORTION OUTBOARD OF SAID FLANGE, A REMOVABLE RING HAVING AN INTERNAL GROOVE HAVING AN INCLINED SIDE MATING WITH THE INCLINED SIDE OF SAID RIDGE AND MEANS FOR SECURING SAID RING TO SAID SHANK OVER SAID RIDGE.
Claim 2
Dependent Claim
67 words
IN COMBINATION, A PROPELLER BLADE HAVING A SHANK PORTION, AN INTEGRAL FLANGE ON SAID SHANK PORTION FOR SUPPORTING A THRUST BEARING, A PROJECTING RIDGE HAVING AN INCLINED SIDE ON SAID SHANK PORTION OUTBOARD OF SAID FLANGE, A REMOVABLE RING HAVING AN INTERNAL GROOVE HAVING AN INCLINED SIDE MATING WITH THE INCLINED SIDE OF SAID RIDGE AND MEANS FOR SECURING SAID RING TO SAID SHANK OVER SAID RIDGE.
References Cited (Backward Citations)
US2080540A
Cited
US2482217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |