US3704982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stick shifter control for automatic transmission
Assignee: MR GASKET COMPANY A OH CORP
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Filing: 1971-02-12
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Granted: 1972-12-05
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Expires: 1991-02-12
Abstract
Abstract A stick control for use with an automatic transmission is disclosed in which a stick-operated shift lever is provided for manual selection of the various control valve positions of the automatic transmission. The stick bottom projects through a fixed gate opening, which gate cooperates with a spring-held cam, said gate and cam providing a series of fixed stops, guides, sloped surfaces, barriers and a locking pocket. One of said slopes provides a deflectable barrier which divides the gate so that forward gears are arranged on one side for positive and accurate upshifting and downshifting, and the gear positions used in automatic driving are located on a second side. A lock arrangement is provided for the park position.
Inventors
- 👤 James F Hobbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:25
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/24; F16H59/00; F16H59/02; F16H59/08; F16H59/10; F16H2061/243; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20067
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
206 words
A gearshift apparatus for control of an automatic transmission of a vehicle, comprising: a housing for connection to the vehicle; a shift stick movably mounted to said housing for to and fro movement of said stick; said shift stick having an upper and lower end and including a tab at its lower end; an output lever connected with said stick and said housing and being movable relative to said housing responsive to and fro movement of said stick; a guide plate connected to said housing and having a gate therein through which the tab end of said stick extends, said gate being defined by edges establishing guide surfaces for said tab end; a cam plate connected to said housing adjacent to said guide plate and having cam surfaces thereon located for abutment by said tab end responsive to the movement of said stick and the guiding of said tab by said guide surfaces; means associated with said cam plate for urging the same into engagement with the tab end of said stick; the movement of said output lever is being limited by the positioning of said tab with respect to said guide surfaces and the positioning of said tab end with respect to said cam plate.
Claim 2
Dependent Claim
206 words
A gearshift apparatus for control of an automatic transmission of a vehicle, comprising: a housing for connection to the vehicle; a shift stick movably mounted to said housing for to and fro movement of said stick; said shift stick having an upper and lower end and including a tab at its lower end; an output lever connected with said stick and said housing and being movable relative to said housing responsive to and fro movement of said stick; a guide plate connected to said housing and having a gate therein through which the tab end of said stick extends, said gate being defined by edges establishing guide surfaces for said tab end; a cam plate connected to said housing adjacent to said guide plate and having cam surfaces thereon located for abutment by said tab end responsive to the movement of said stick and the guiding of said tab by said guide surfaces; means associated with said cam plate for urging the same into engagement with the tab end of said stick; the movement of said output lever is being limited by the positioning of said tab with respect to said guide surfaces and the positioning of said tab end with respect to said cam plate.
Claim 3
Dependent Claim
49 words
The apparatus as described in claim 1 comprising a spring which exerts a force against said shift stick so as to normally bias said tab against a first side of said gate and having a plurality of leaf springs which normally hold said cam plate against said guide plate.
Claim 4
Dependent Claim
62 words
The apparatus as described in claim 2 wherein said cam plate is deflectable and includes a barrier which acts to divide said gate into two operating sides, a first side toward which said tab is normally biased by said spring means and containing a plurality of positions for automatic tRansmission driving, and said opposite side containing forward speed positions for rapid shifting.
Claim 5
Dependent Claim
19 words
The apparatus as described in claim 3 wherein said gate contains stop edges defining a plurality of shift positions.
Claim 6
Dependent Claim
76 words
The apparatus as described in claim 3 wherein said cam surface has portions thereof at two different levels relative to said gate, such that when said tab is in contact with said cam surface at a first level, said cam plate is held firmly against said quadrant member by said leaf springs, and when said tab is in contact with said cam surface at a second level, said cam plate is displaced from said guide plate.
Claim 7
Dependent Claim
151 words
A gearshift apparatus for control of an automatic transmission of a vehicle, comprising: a housing for connection to the vehicle; a shift stick movably mounted to said housing for to and fro movement in transversally oriented paths of travel, said shift stick having an upper and lower end and including a tab at its lower end; an output lever connected with said stick and said housing and being linearly movable relative to said housing responsive to the movement of said stick; pattern means for guiding and constraining the movement of said tab, said pattern means including a gate having edges defining a guide and a cam member adjacent said gate having cam surfaces for tracking by said tab end, the movement of said output lever being limited by the positioning of said tab with respect to said guide and the positioning of said tab end with respect to said cam plate.
Claim 8
Dependent Claim
151 words
A gearshift apparatus for control of an automatic transmission of a vehicle, comprising: a housing for connection to the vehicle; a shift stick movably mounted to said housing for to and fro movement in transversally oriented paths of travel, said shift stick having an upper and lower end and including a tab at its lower end; an output lever connected with said stick and said housing and being linearly movable relative to said housing responsive to the movement of said stick; pattern means for guiding and constraining the movement of said tab, said pattern means including a gate having edges defining a guide and a cam member adjacent said gate having cam surfaces for tracking by said tab end, the movement of said output lever being limited by the positioning of said tab with respect to said guide and the positioning of said tab end with respect to said cam plate.
Claim 9
Dependent Claim
52 words
The apparatus as described in claim 6 wherein one of said cam surfaces has a first portion at a first level and a second portion at a second level, said two portions defining an edge which protects against shifting into Second Gear attended while shifting from Second Gear Unattended to Third Gear.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |