US3301330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propeller oil level control
Assignee: Motors Liquidation Co
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Filing: 1964-10-16
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Granted: 1967-01-31
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Expires: 1984-10-16
Abstract
No abstract record available.
Inventors
- 👤 Calvin C Covert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:03
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/30; B64C11/38; B64C11/40
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
160 words
IN A VARIABLE PITCH PROPELLER HAVING A HUB, A GEAR REDUCTION UNIT ATTACHED TO THE REAR OF SAID HUB AND A REGULATOR RESERVOIR ATTACHED TO THE FRONT OF SAID HUB, IN COMBINATION INCLUDING, A STATIONARY SUPPORT ABOUT WHICH SAID HUB AND SAID REGULATOR STRUCTURE ROTATES, A STATIONARY PUMP POWER GEAR CONNECTED TO SAID STATIONARY SUPPORT AND EXTENDING INTO SAID REGULATOR RESERVOIR, SAID REGULATOR RESERVOIR BEING PARTIALLY FILLED WITH OIL, PUMP MEANS DRIVINGLY CONNECTED WITH SAID PUMP POWER GEAR AND DISPOSED WITHIN SAID REGULATOR STRUCTURE AND ROTATABLE THEREWITH WHEREBY SAID PUMP MEANS WILL BE ACTIVATED INCIDENT TO ROTATION OF SAID REGULATOR STRUCTURE ABOUT SAID STATIONARY PUMP POWER GEAR AND THE OIL IN SAID REGULATOR STRUCTURE FORMS A TORUS DURING ROTATION THEREOF, STATIONARY, PRESSURE DEVELOPING SCOOP MEANS ON SAID PUMP POWER GEAR WITH THE END THEREOF IMMERSED IN SAID TORUS OF OIL WHEN THE OIL LEVEL IN SAID REGULATOR STRUCTURE IS NORMAL, A LUBRICATING OIL SYSTEM FOR SAID GEAR REDUCTION UNIT, A
References Cited (Backward Citations)
US3074688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |