Patent US3289602A successfully refreshed from Google Patents.
US3289602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure device
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1965-09-03
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Granted: 1966-12-06
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Expires: 1985-09-03
Abstract
No abstract record available.
Inventors
- 👤 Bernard C Hudgens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:50
CPC Classifications
F; F04; F04C; F04C2/00; F04C2/08; F04C2/10; F04C2/103; F04C2/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN AN INTERNAL GEAR TYPE FLUID PRESSURE DEVICE INCLUDING A FIRST GEAR SURROUNDED BY AND MESHED WITH A SECOND GEAR, ONE OF SAID GEARS HAVING ONE LESS TOOTH THAN THE OTHER GEAR, SAID GEARS BEING RELATIVELY ROTATABLE, ONE OF SAID GEARS BEING MOUNTED FOR ORBITAL MOVEMENT RELATIVE TO THE OTHER GEAR, SAID SECOND GEAR HAVING CIRCUMFERENTIALLY SPACED FRAGMENTAL CYLINDRICAL RECESSES AROUND THE INNER PERIPHERY THEREOF OPENING THROUGH SAID INNER PERIPHERY, CYLINDRICAL ROLLERS MOUNTED IN SAID RECESSES AND FREE TO ROTATE THEREIN, SAID ROLLERS PROJECTING BEYOND SAID OPENINGS THROUGH THE INNER PERIPHERY OF THE SECOND GEAR TO PROVIDE THE TEETH FOR SAID SECOND GEAR, SAID FIRT GEAR
Claim 2
Dependent Claim
106 words
IN AN INTERNAL GEAR TYPE FLUID PRESSURE DEVICE INCLUDING A FIRST GEAR SURROUNDED BY AND MESHED WITH A SECOND GEAR, ONE OF SAID GEARS HAVING ONE LESS TOOTH THAN THE OTHER GEAR, SAID GEARS BEING RELATIVELY ROTATABLE, ONE OF SAID GEARS BEING MOUNTED FOR ORBITAL MOVEMENT RELATIVE TO THE OTHER GEAR, SAID SECOND GEAR HAVING CIRCUMFERENTIALLY SPACED FRAGMENTAL CYLINDRICAL RECESSES AROUND THE INNER PERIPHERY THEREOF OPENING THROUGH SAID INNER PERIPHERY, CYLINDRICAL ROLLERS MOUNTED IN SAID RECESSES AND FREE TO ROTATE THEREIN, SAID ROLLERS PROJECTING BEYOND SAID OPENINGS THROUGH THE INNER PERIPHERY OF THE SECOND GEAR TO PROVIDE THE TEETH FOR SAID SECOND GEAR, SAID FIRT 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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |