US3688596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shifting mechanism for multi-speed transmission
Assignee: Individual
•
Filing: 1969-06-17
•
Granted: 1972-09-05
•
Expires: 1989-06-17
Abstract
Abstract Apparatus for shifting gears of a multi-speed transmission, including a disk-shaped shift plate having shifting gates or slots provided therein for directly controlling the selective engagement of the individual gears.
Inventors
- 👤 Imre Szodfridt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:01
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/006; B; B60; B60W; B60W10/00; B60W10/02; B60W10/10; B60W10/11; B60W30/00; B60W30/18; B60W2710/00; B60W2710/02; B60W2710/021; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19228; Y10T74/19251; Y10T74/19279
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
157 words
A shifting mechanism for a multi-speed power transmission, comprising rotatably supported disk-shaped shift plate means having shifting slot means provided therein and profiled control surface means, source means for supplying a pressure medium, shifting phase valve means operatively connected with said pressure source means and adapted for selective engagement with said profiled control surface means of said shift plate means for controlling the rotational speed of said shift plate means, clutch valve means operatively connected with said pressure source means and adapted for selective engagement with said profile control surfaces of said shift plate means and operatively connected with clutch means for controlling selective engagement and disengagement thereof, and control means, including manually operated means and servo-motor means operatively connected with said manually operated means for effecting rotation of said shift plate means, for controlling the shifting between individual gears within the transmission, wherein said shifting phase valve means is also operatively connected with said control means.
Claim 2
Dependent Claim
157 words
A shifting mechanism for a multi-speed power transmission, comprising rotatably supported disk-shaped shift plate means having shifting slot means provided therein and profiled control surface means, source means for supplying a pressure medium, shifting phase valve means operatively connected with said pressure source means and adapted for selective engagement with said profiled control surface means of said shift plate means for controlling the rotational speed of said shift plate means, clutch valve means operatively connected with said pressure source means and adapted for selective engagement with said profile control surfaces of said shift plate means and operatively connected with clutch means for controlling selective engagement and disengagement thereof, and control means, including manually operated means and servo-motor means operatively connected with said manually operated means for effecting rotation of said shift plate means, for controlling the shifting between individual gears within the transmission, wherein said shifting phase valve means is also operatively connected with said control means.
Claim 3
Dependent Claim
29 words
A shifting mechanism according to claim 1, further comprising transmission housing means having at least one opening therein, said shift plate means being disposed within said transmission housing means.
Claim 4
Dependent Claim
36 words
A shifting mechanism according to claim 2, wherein said shifting phase valve means and said clutch valve means are combined within a common structural unit which is supported at an opening of said transmission housing means.
Claim 5
Dependent Claim
25 words
A shifting mechanism according to claim 2, wherein said control means includes stepping means operatively interposed between said manually operated means and said servo-motor means.
Claim 6
Dependent Claim
41 words
A shifting mechanism according to claim 2, wherein said transmission is operatively combined with a vehicle differential gear means and a housing therefor, said means for effecting rotation of said shift plate means being disposed primarily within said differential gear housing.
Claim 7
Dependent Claim
41 words
A shifting mechanism according to claim 4, wherein said transmission is operatively combined with a vehicle differential gear means and a housing therefor, said means for effecting rotation of said shift plate means being disposed primarily within said differential gear housing.
Claim 8
Dependent Claim
22 words
A shifting mechanism according to claim 6, wherein said clutch means includes two clutches combined in the form of a twin clutch.
Claim 9
Dependent Claim
41 words
A shifting mechanism according to claim 7, wherein said servo-motor means includes a cylinder and a slide member supported for motion therein, said slide member including control pistons for selectively controlling flow of hydraulic medium to said shifting phase valve means.
Claim 10
Dependent Claim
36 words
A shifting mechanism according to claim 8, wherein said shifting phase valve means includes an operating piston and a piston rod operatively connecting said profiled control surfaces of said shift plate means and said operating piston.
Claim 11
Dependent Claim
35 words
A shifting mechanism according to claim 9, wherein said clutch valvE means includes an operating piston and a piston rod operatively connecting said operating piston and said profiled control surfaces of said shift plate means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |