US3670595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed automatic transmission
Assignee: Individual
•
Filing: 1969-12-17
•
Granted: 1972-06-20
•
Expires: 1989-12-17
Abstract
Abstract This specification discloses an infinitely variable speed transmission. The transmission is made up of a friction planetary drive and a torque converter. The reactive member of the friction drive and the output of the torque converter are connected to the output of the transmission.
Inventors
- 👤 Walter Valdemar Chery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:57
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/065
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
171 words
In combination a hydraulic torque converter, and a friction planetary drive, said friction planetary drive having first element, second element and third element, said hydraulic torque converter having a first element, a second element and a third element, means connecting said first element and said second element of said hydraulic torque converter to said first element and said second element respectively of said friction planetary drive, an input means connected to said third element of said friction planetary drive, and said means for connecting including means for selectively locking said second element of said hydraulic torque converter to said second element of said friction planetary drive and further to a member fixed relative to the support means for said friction planetary drive and said hydraulic torque converter, an output and means selectively connecting said output to said input and to said second element of said friction planetary drive, and means to selectively connect said third element of said hydraulic torque converter to said member fixed relative to said friction planetary drive.
Claim 2
Dependent Claim
171 words
In combination a hydraulic torque converter, and a friction planetary drive, said friction planetary drive having first element, second element and third element, said hydraulic torque converter having a first element, a second element and a third element, means connecting said first element and said second element of said hydraulic torque converter to said first element and said second element respectively of said friction planetary drive, an input means connected to said third element of said friction planetary drive, and said means for connecting including means for selectively locking said second element of said hydraulic torque converter to said second element of said friction planetary drive and further to a member fixed relative to the support means for said friction planetary drive and said hydraulic torque converter, an output and means selectively connecting said output to said input and to said second element of said friction planetary drive, and means to selectively connect said third element of said hydraulic torque converter to said member fixed relative to said friction planetary drive.
Claim 3
Dependent Claim
41 words
The combination recited in claim 1 wherein said friction planetary drive third element comprises a sun roll connected to said input, and said friction planetary drive second element comprises outer rings, said friction planetary drive first element comprises a planetary cage.
Claim 4
Dependent Claim
69 words
The combination recited in claim 1 wherein said friction planetary drive has outer rings and a planetary cage supporting rolling elements, and cam means on said outer rings, said cam means being adapted to move said outer rings toward and away from said planetary rolls in proportion to torque exerted between said input and said output whereby a variable speed ratio is provided between said input and said output.
Claim 5
Dependent Claim
44 words
The combination recited in claim 1 wherein said first element of said friction planetary drive is a planetary cage, said second element of said friction planetary drive is a sun element, and said third element of said friction planetary drive is a ring element.
Claim 6
Dependent Claim
22 words
The combination recited in claim 4 wherein means is provided to control the ratio of said planet members and said ring members.
Claim 7
Dependent Claim
26 words
The combination recited in claim 4 wherein preload force is provided between said ring members and said planet members and means to supplement said preload force.
References Cited (Backward Citations)
GB450246A
Cited
US2224884A
Cited
US2572310A
Cited
US3224298A
Cited
US3203278A
Cited
US3293945A
Cited
US3299743A
Cited
US3394617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |