Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Patent
1977-03-21
1978-12-12
Culver, Horace M.
Machine element or mechanism
Control lever and linkage systems
Multiple controlled elements
B60K 2004, B60K 2012
Patent
active
041290461
ABSTRACT:
An improved gear shift control for use in motor vehicle transmissions of the type wherein gear shifter forks are slidably mounted on associated elongated shifter rails within the housing of the transmission. The gear shift control includes a selector gate mounted within the transmission cover for rotation about a first axis transverse to the longitudinal axis of the shifter rails. A shift lever is mounted within the gate for rotation about a second axis, generally perpendicular to and intersecting the first axis, the lower end of the shift lever being selectively engageable with the shifter forks for movement of the shifter forks on their associated shifter rails. Tabs extend laterally from the lower end of the selector gate to selectively engage at least one shifter fork to prevent movement thereof during movement of another shifter fork. Opposed springs are provided to center the selector gate in a neutral position between changes in shifter fork positions.
REFERENCES:
patent: 2197938 (1940-04-01), Lapsley et al.
patent: 2537060 (1951-01-01), Keese
patent: 2690684 (1954-10-01), Stemler
patent: 3429202 (1969-02-01), Galicher
patent: 3513716 (1970-05-01), Evans
patent: 3677105 (1972-07-01), Dence
patent: 3732746 (1973-05-01), Fitzpatrick
patent: 3934485 (1976-01-01), Ratliff
patent: 3939724 (1976-02-01), Takahashi et al.
Caterpillar Tractor Co.
Culver Horace M.
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