US3291053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thrust bearing for pump or motor
Assignee: Doosan Bobcat North America Inc
•
Filing: 1965-01-14
•
Granted: 1966-12-13
•
Expires: 1985-01-14
Abstract
No abstract record available.
Inventors
- 👤 Richard O Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:38
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0042
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
IN A PUMP OR MOTOR OF THE TYPE INCLUDING A HOUSING CONTAINING INTERMESHING GEARS AND HAVING AN INLET LEADING TO AND AN OUTLET LEADING FROM SAID HOUSING, DRIVING AND DRIVEN SHAFT MEANS MOUNTING SAID GEARS IN THE HOUSING, PRESSURE RESPONSIVE THRUST MEANS MOUNTED ON EACH OF SAID SHAFT MEANS ON OPPOSITE SIDES OF EACH OF SAID GEARS FOR SEALING THE SIDE FACES OF THE RESPECTIVE GEARS FROM LEAKAGE OF PRESSURE FLUID RADIALLY INWARDLY OF SAID GEARS, AND AN ANNULAR END THRUST BEARING MEANS MOUNTED ON EACH OF SAID SHAFT MEANS IN CONTACT WITH EACH SIDE FACE OF EACH OF SAID GEARS AND WITH A PORTION OF THE ADJACENT THRUST MEANS, SAID THRUST BEARING MEANS COMPRISING A ROLLER BEARING ASSEMBLY HAVING A PLURALITY OF RADIALLY EXTENDING ROLLERS LOCATED CIRCUMFERENTIALLY OUTWARDLY OF THE RESPECTIVE SHAFT MEANS AND CIRCUMFERETNAILLY INWARDLY OF THAT PORTION OF THE THRUST MEANS WHICH IS ADAPTED TO ENGAGE IN SEALING RELATION THE SIDE FACE OF THE GEAR.
Claim 2
Dependent Claim
158 words
IN A PUMP OR MOTOR OF THE TYPE INCLUDING A HOUSING CONTAINING INTERMESHING GEARS AND HAVING AN INLET LEADING TO AND AN OUTLET LEADING FROM SAID HOUSING, DRIVING AND DRIVEN SHAFT MEANS MOUNTING SAID GEARS IN THE HOUSING, PRESSURE RESPONSIVE THRUST MEANS MOUNTED ON EACH OF SAID SHAFT MEANS ON OPPOSITE SIDES OF EACH OF SAID GEARS FOR SEALING THE SIDE FACES OF THE RESPECTIVE GEARS FROM LEAKAGE OF PRESSURE FLUID RADIALLY INWARDLY OF SAID GEARS, AND AN ANNULAR END THRUST BEARING MEANS MOUNTED ON EACH OF SAID SHAFT MEANS IN CONTACT WITH EACH SIDE FACE OF EACH OF SAID GEARS AND WITH A PORTION OF THE ADJACENT THRUST MEANS, SAID THRUST BEARING MEANS COMPRISING A ROLLER BEARING ASSEMBLY HAVING A PLURALITY OF RADIALLY EXTENDING ROLLERS LOCATED CIRCUMFERENTIALLY OUTWARDLY OF THE RESPECTIVE SHAFT MEANS AND CIRCUMFERETNAILLY INWARDLY OF THAT PORTION OF THE THRUST MEANS WHICH IS ADAPTED TO ENGAGE IN SEALING RELATION THE SIDE FACE OF THE GEAR.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |