Patent US4924875A successfully refreshed from Google Patents.
Patent US3602055A successfully refreshed from Google Patents.
US3602055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission
Assignee: Motors Liquidation Co
•
Filing: 1970-03-02
•
Granted: 1971-08-31
•
Expires: 1990-03-02
Abstract
Abstract A vehicle transmission having a hydrodynamic torque converter and planetary gearing combined with four friction brakes, three friction clutches and three one-way devices to provide four forward drives including an overdrive and also to provide a reverse drive.
Inventors
- 👤 Gilbert K Hause
- 👤 Jerry R Mrlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:50
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
352 words
In a transmission the combination of an input member; an output member; first and second planetary gear sets each having a sun gear, a ring gear and a carrier supporting a pinion in mesh with the sun gear and ring gear; the ring gear of said first gearset, the carrier of said second gearset and said output member all being connected; the carrier of said first gearset connected to the ring gear of said second gearset; means including first clutch means and first one-way clutch means in series therewith for selectively providing a one-way drive connection between said input member and the sun gear of said first gearset; means including second clutch means and second one-way clutch means in series therewith whose one-way action is opposite that of said first one-way clutch means for selectively providing another one-way drive connection between said input member and the sun gear of said first gearset; third clutch means for selectively connecting said input member to the carrier of said first gearset and connected ring gear of said second gearset; drive establishing means including first brake means for selectively preventing rotation of the sun gear of said second gearset in at least one direction; second brake means for selectively braking the sun gear of said first gearset and third brake means for selectively braking the carrier of said first gearset whereby a first forward speed range drive is provided on engagement of said first clutch means and said first brake means, a second forward speed range drive is provided on engagement of said third clutcH means and said first brake means while said first clutch means is engaged, a third forward speed range drive is provided on engagement of said first, second and third clutch means while said first brake means is engaged, a fourth forward speed range drive is provided on engagement of said second brake means and said third clutch means while both said second clutch means and said first brake means are engaged and a reverse speed range drive is provided on engagement of said first clutch means and said third brake means.
Claim 2
Dependent Claim
352 words
In a transmission the combination of an input member; an output member; first and second planetary gear sets each having a sun gear, a ring gear and a carrier supporting a pinion in mesh with the sun gear and ring gear; the ring gear of said first gearset, the carrier of said second gearset and said output member all being connected; the carrier of said first gearset connected to the ring gear of said second gearset; means including first clutch means and first one-way clutch means in series therewith for selectively providing a one-way drive connection between said input member and the sun gear of said first gearset; means including second clutch means and second one-way clutch means in series therewith whose one-way action is opposite that of said first one-way clutch means for selectively providing another one-way drive connection between said input member and the sun gear of said first gearset; third clutch means for selectively connecting said input member to the carrier of said first gearset and connected ring gear of said second gearset; drive establishing means including first brake means for selectively preventing rotation of the sun gear of said second gearset in at least one direction; second brake means for selectively braking the sun gear of said first gearset and third brake means for selectively braking the carrier of said first gearset whereby a first forward speed range drive is provided on engagement of said first clutch means and said first brake means, a second forward speed range drive is provided on engagement of said third clutcH means and said first brake means while said first clutch means is engaged, a third forward speed range drive is provided on engagement of said first, second and third clutch means while said first brake means is engaged, a fourth forward speed range drive is provided on engagement of said second brake means and said third clutch means while both said second clutch means and said first brake means are engaged and a reverse speed range drive is provided on engagement of said first clutch means and said third brake means.
Claim 3
Dependent Claim
23 words
The transmission set forth in claim 1 and said drive establishing means including one-way brake means in series with said first brake means.
Claim 4
Dependent Claim
36 words
The transmission set forth in claim 2 and fourth brake means for selectively holding the sun gear of said second gearset against rotation in any direction in both said first and second forward speed range drives.
References Cited (Backward Citations)
US2395459A
Cited
US2418378A
Cited
US2531996A
Cited
US2620685A
Cited
US3049945A
Cited
US3209620A
Cited
US3505905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |