US3575067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission
Assignee: Motors Liquidation Co
•
Filing: 1969-10-16
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Granted: 1971-04-13
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Expires: 1989-10-16
Abstract
Abstract A vehicular transmission having two planetary gear sets, three brakes and three clutches combined to provide three forward speed range drives and one reverse speed range drive with an extremely high-speed reduction ratio in the lowest forward speed range drive.
Inventors
- 👤 Stanley W Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:02
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
232 words
In a transmission the combination of an input shaft; an output shaft; a pair of planetary gear sets each comprising a sun gear, a ring gear, and a carrier having a pinion meshing with both said sun gear and said ring gear; said input shaft being connected to the sun gear of one of said gear sets; the carrier of said one gear set being connected to said output shaft; the ring gear of said one gear set being connected to the sun gear of the other of said gear sets; first clutch means or selectively drivingly connecting the ring gear of said other gear set to said output shaft; first brake means for selectively braking the carrier of said other gear set whereby on simultaneous engagement of said first clutch means and said first brake means there is effected a drive causing said output shaft to rotate in the same direction as said input shaft and at a reduced speed; second clutch means for selectively drivingly connecting the carrier of said other gear set to said output shaft; and second brake means for selectively braking the ring gear of said other gear set whereby on simultaneous engagement of said second clutch means and said second brake means there is effected a drive causing said output shaft to rotate in the opposite direction as said input shaft and at a reduced speed.
Claim 2
Dependent Claim
232 words
In a transmission the combination of an input shaft; an output shaft; a pair of planetary gear sets each comprising a sun gear, a ring gear, and a carrier having a pinion meshing with both said sun gear and said ring gear; said input shaft being connected to the sun gear of one of said gear sets; the carrier of said one gear set being connected to said output shaft; the ring gear of said one gear set being connected to the sun gear of the other of said gear sets; first clutch means or selectively drivingly connecting the ring gear of said other gear set to said output shaft; first brake means for selectively braking the carrier of said other gear set whereby on simultaneous engagement of said first clutch means and said first brake means there is effected a drive causing said output shaft to rotate in the same direction as said input shaft and at a reduced speed; second clutch means for selectively drivingly connecting the carrier of said other gear set to said output shaft; and second brake means for selectively braking the ring gear of said other gear set whereby on simultaneous engagement of said second clutch means and said second brake means there is effected a drive causing said output shaft to rotate in the opposite direction as said input shaft and at a reduced speed.
Claim 3
Dependent Claim
55 words
The transmission set forth in claim 1 and third brake means for selectively braking the ring gear of said one gear set whereby on engagement of only said third brake means there is effected a drive causing said output shaft to rotate in the same direction as said input shaft and at a reduced speed.
Claim 4
Dependent Claim
42 words
The transmission set forth in claim 2 and third clutch means for selectively locking up said one gear set whereby on engagement of only said third clutch means there is effected a direct drive between said input shaft and said output shaft.
References Cited (Backward Citations)
US3282131A
Cited
US3398606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |