Patent US2519688A successfully refreshed from Google Patents.
US3147642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple disc clutch or brake assembly
Assignee: Ford Motor Co
•
Filing: 1959-07-17
•
Granted: 1964-09-08
•
Expires: 1979-07-17
Abstract
No abstract record available.
Inventors
- 👤 Robert L Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:22
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/02; F16H61/0262; F16H2716/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A TRANSMISSION HAVING POWER INPUT AND OUTPUT SHAFTS, AND MEANS CONNECTING SAID SHAFTS PROVIDING A PLURALITY OF DRIVES THEREBETWEEN, SAID MEANS INCLUDING GEARSET MEANS HAVING A PLURALITY OF ROTATABLE GEAR ELEMENTS CONNECTED TO SAID SHAFTS, AND SELECTIVELY OPERABLE CLUTCH AND BRAKE MEANS OPERATIVELY ASSOCIATED WITH SAID ELEMENTS FOR CONDITIONING SAID GEARSET MEANS FOR SAID DRIVES, SAID CLUTCH MEANS INCLUDING RADIALLY INNER AND OUTER INTERLEAVED SETS OF AXIALLY SPACED FRICTION DISCS NORMALLY DISENGAGED FOR A RELATIVE ROTATION THEREBETWEEN, A HOLLOW DRUM MEMBER SECURED TO ONE OF SAID ELEMENTS AND EXTERNALLY SPLINED TO SAID INNER SET OF FRICTION DISCS, SAID OUTER SET OF FRICTION DISCS BEING ROTATABLE WITH ANOTHER OF SAID ELEMENTS, SAID BRAKE MEANS BEING ENGAGABLE WITH SAID DRUM MEMBER TO PREVENT ROTATION OF SAID DRUM MEMBER AND SAID ONE ELEMENT AND INNER FRICTION DISCS TO CONDITION SAID GEARSET MEANS FOR ONE DRIVE THERETHROUGH UPON ROTATION OF SAID ANOTHER ELEMENT AND SAID SECOND FRICTION DISC SET, AND
Claim 2
Dependent Claim
156 words
A TRANSMISSION HAVING POWER INPUT AND OUTPUT SHAFTS, AND MEANS CONNECTING SAID SHAFTS PROVIDING A PLURALITY OF DRIVES THEREBETWEEN, SAID MEANS INCLUDING GEARSET MEANS HAVING A PLURALITY OF ROTATABLE GEAR ELEMENTS CONNECTED TO SAID SHAFTS, AND SELECTIVELY OPERABLE CLUTCH AND BRAKE MEANS OPERATIVELY ASSOCIATED WITH SAID ELEMENTS FOR CONDITIONING SAID GEARSET MEANS FOR SAID DRIVES, SAID CLUTCH MEANS INCLUDING RADIALLY INNER AND OUTER INTERLEAVED SETS OF AXIALLY SPACED FRICTION DISCS NORMALLY DISENGAGED FOR A RELATIVE ROTATION THEREBETWEEN, A HOLLOW DRUM MEMBER SECURED TO ONE OF SAID ELEMENTS AND EXTERNALLY SPLINED TO SAID INNER SET OF FRICTION DISCS, SAID OUTER SET OF FRICTION DISCS BEING ROTATABLE WITH ANOTHER OF SAID ELEMENTS, SAID BRAKE MEANS BEING ENGAGABLE WITH SAID DRUM MEMBER TO PREVENT ROTATION OF SAID DRUM MEMBER AND SAID ONE ELEMENT AND INNER FRICTION DISCS TO CONDITION SAID GEARSET MEANS FOR ONE DRIVE THERETHROUGH UPON ROTATION OF SAID ANOTHER ELEMENT AND SAID SECOND FRICTION DISC SET, AND
References Cited (Backward Citations)
US2733797A
Cited
US2775331A
Cited
US2808140A
Cited
US2728429A
Cited
US2886983A
Cited
US3027783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |