US3145583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differential
Assignee: FRENTZEL ENGINEERING Co
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Filing: 1962-08-22
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Granted: 1964-08-25
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Expires: 1982-08-22
Abstract
No abstract record available.
Inventors
- 👤 Herman C Frentzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:56
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/27; F16H48/06; F16H48/08; F16H2048/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A DIFFERENTIAL COMPRISING, A HOUSING MOUNTED FOR ROTARY MOTION AND ADAPTED TO CONTAIN OIL, A PAIR OF AXLES EXTENDING INTO SAID HOUSING, DRIVEN GEARS POSITIONED WITHIN THE HOUSING AND SECURED TO THE AXLES, A TUBULAR SPINDLE CARRIED BY THE HOUSING, PINION GEARS ROTATABLY MOUNTED ON THE SPINDLE AND MESHING WITH THE DRIVEN GEARS, A SINGLE BLOCK POSITIONED ON THE SPINDLE WITHIN THE CONFINES OF THE PINION GEARS AND DRIVEN GEARS AND DEFINING AREAS OF ENGAGEMENT AND DISENGAGEMENT BETWEEN THE TEETH OF THE PINION AND DRIVEN GEARS WHEREBY THE MESHING OF EACH DRIVEN GEAR WITH A PINION SERVES AS A GEAR PUMP DRAWING OIL INTO THE AREA OF DISENGAGEMENT AND DELIVERING OIL AT THE AREA OF ENGAGEMENT, PASSAGE MEANS IN THE HOUSING AND BLOCK CONNECTING AREAS OF ENGAGEMENT AND AREAS OF DISENGAGEMENT WITH THE SPINDLE, CONTROL MEANS WITHIN THE SPINDLE FOR REGULATING FLOW OF OIL FROM THE AREAS OF ENGAGEMENT TO THE AREAS OF DISENGAGEMENT, AND PUMP MEANS WITHIN THE SPINDLE FOR MAINTAINING OIL WITHIN THE HOUSING.
Claim 2
Dependent Claim
166 words
A DIFFERENTIAL COMPRISING, A HOUSING MOUNTED FOR ROTARY MOTION AND ADAPTED TO CONTAIN OIL, A PAIR OF AXLES EXTENDING INTO SAID HOUSING, DRIVEN GEARS POSITIONED WITHIN THE HOUSING AND SECURED TO THE AXLES, A TUBULAR SPINDLE CARRIED BY THE HOUSING, PINION GEARS ROTATABLY MOUNTED ON THE SPINDLE AND MESHING WITH THE DRIVEN GEARS, A SINGLE BLOCK POSITIONED ON THE SPINDLE WITHIN THE CONFINES OF THE PINION GEARS AND DRIVEN GEARS AND DEFINING AREAS OF ENGAGEMENT AND DISENGAGEMENT BETWEEN THE TEETH OF THE PINION AND DRIVEN GEARS WHEREBY THE MESHING OF EACH DRIVEN GEAR WITH A PINION SERVES AS A GEAR PUMP DRAWING OIL INTO THE AREA OF DISENGAGEMENT AND DELIVERING OIL AT THE AREA OF ENGAGEMENT, PASSAGE MEANS IN THE HOUSING AND BLOCK CONNECTING AREAS OF ENGAGEMENT AND AREAS OF DISENGAGEMENT WITH THE SPINDLE, CONTROL MEANS WITHIN THE SPINDLE FOR REGULATING FLOW OF OIL FROM THE AREAS OF ENGAGEMENT TO THE AREAS OF DISENGAGEMENT, AND PUMP MEANS WITHIN THE SPINDLE FOR MAINTAINING OIL WITHIN THE HOUSING.
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) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |