Patent US3321999A successfully refreshed from Google Patents.
US3321999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple disc friction clutch and band brake construction
Assignee: Ford Motor Co
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Filing: 1965-10-24
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Granted: 1967-05-30
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Expires: 1985-10-24
Abstract
No abstract record available.
Inventors
- 👤 John W Greer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:52
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/08; F16D; F16D25/00; F16D25/06; F16D25/062; F16D25/063; F16D25/0635; F16D25/0638; F16D25/12; F16D25/123; F16D67/00; F16D67/02; F16D67/04; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H57/00; F16H57/08; F16D69/00; F16D2069/004; F16D25/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
IN A POWER TRANSMISSION SYSTEM HAVING RELATIVELY MOVABLE GEAR ELEMENTS ADAPTED TO ESTABLISH PLURAL TORQUE DELIVERY PATHS BETWEEN A DRIVING MEMBER AND A DRIVEN MEMBER, A MULTIPLE DISC CLUTCH ASSEMBLY AND A BRAKE BAND ASSEMBLY, SAID CLUTCH ASSEMBLY AND SAID BRAKE ASSEMBLY HAVING A COMMON DRUM, CLUTCH MEANS FOR DELIVERING DRIVING TORQUE FROM SAID DRIVING MEMBER TO ONE ELEMENT OF SAID GEARING, ANOTHER ELEMENT OF SAID GEARING BEING CONNECTED TO SAID DRUM, AN EXTERNALLY SPLINED CLUTCH ELEMENT CONNECTED TO SAID DRIVING MEMBER, FIRST CLUTCH DISCS CARRIED BY SAID CLUTCH ELEMENT, INTERNAL SPLINE GROOVES FORMED IN SAID DRUM, SECOND CLUTCH DISCS CARRIED BY SAID SPLINED GROOVES IN INTERDIGITAL RELATIONSHIP WITH RESPECT TO SAID FIRST CLUTCH DISCS, A FRICTION BRAKE BAND SURROUNDING SAID DRUM, LUBRICATION OIL PORTS FORMED IN SAID CLUTCH ELEMENT THEREBY ADMITTING LUBRICATING OIL TO THE REGION OF SAID DISCS, AN OIL COLLECTING ANNULAR GROOVE FORMED IN SAID DRUM AND ESTABLISHING FLUID COMMUNICATION BETWEEN SAID SPLINED GROOVES, AND A LUBRICATION OIL PORT EXTENDING RADIALLY THROUGH SAID DRUM FROM ONE OF SAID SPLINED GROOVES TO A CENTRAL REGION OF SAID BRAKE BAND.
Claim 2
Dependent Claim
181 words
IN A POWER TRANSMISSION SYSTEM HAVING RELATIVELY MOVABLE GEAR ELEMENTS ADAPTED TO ESTABLISH PLURAL TORQUE DELIVERY PATHS BETWEEN A DRIVING MEMBER AND A DRIVEN MEMBER, A MULTIPLE DISC CLUTCH ASSEMBLY AND A BRAKE BAND ASSEMBLY, SAID CLUTCH ASSEMBLY AND SAID BRAKE ASSEMBLY HAVING A COMMON DRUM, CLUTCH MEANS FOR DELIVERING DRIVING TORQUE FROM SAID DRIVING MEMBER TO ONE ELEMENT OF SAID GEARING, ANOTHER ELEMENT OF SAID GEARING BEING CONNECTED TO SAID DRUM, AN EXTERNALLY SPLINED CLUTCH ELEMENT CONNECTED TO SAID DRIVING MEMBER, FIRST CLUTCH DISCS CARRIED BY SAID CLUTCH ELEMENT, INTERNAL SPLINE GROOVES FORMED IN SAID DRUM, SECOND CLUTCH DISCS CARRIED BY SAID SPLINED GROOVES IN INTERDIGITAL RELATIONSHIP WITH RESPECT TO SAID FIRST CLUTCH DISCS, A FRICTION BRAKE BAND SURROUNDING SAID DRUM, LUBRICATION OIL PORTS FORMED IN SAID CLUTCH ELEMENT THEREBY ADMITTING LUBRICATING OIL TO THE REGION OF SAID DISCS, AN OIL COLLECTING ANNULAR GROOVE FORMED IN SAID DRUM AND ESTABLISHING FLUID COMMUNICATION BETWEEN SAID SPLINED GROOVES, AND A LUBRICATION OIL PORT EXTENDING RADIALLY THROUGH SAID DRUM FROM ONE OF SAID SPLINED GROOVES TO A CENTRAL REGION OF SAID BRAKE BAND.
References Cited (Backward Citations)
US2733797A
Cited
US3202253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |