Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Patent
1974-08-08
1976-01-20
Herrmann, Allan D.
Machine element or mechanism
Control lever and linkage systems
Multiple controlled elements
74476, G05G 912, F16H 5706
Patent
active
039330575
ABSTRACT:
A shift control mechanism is provided for a multipleforward-speed manual transmission with controlled operation of the shift lever between the reverse drive position and one forward drive position to prevent inadvertent shifting which might damage the transmission. A transmission lever whose movement is controlled through the shift lever is formed with a first projection extending therefrom which is adapted to engage a second projection extending from a housing. The housing is rotatably and linearly movable under the biasing force of spring means and when the shift lever is moved to the neutral position, engagement between the first and second projections will cause rotative movement of the housing. When the shift lever is moved to the one forward drive position, the spring means will rotate the housing back to its initial position thereby placing the second projection within the path of movement of the first projection. Any subsequent attempt to move the shift lever from the one forward drive position to the reverse drive position will be blocked in a manner which will not interfere with otherwise appropriate shifting of the transmission. The control mechanism may be configured to prevent erroneous shifting in both directions between the reverse drive position and the one forward drive position or, alternatively, shifting may be blocked in one direction only.
REFERENCES:
patent: 3192788 (1965-07-01), Fodrea
patent: 3496797 (1970-02-01), Stott et al.
patent: 3866488 (1975-02-01), Nakata et al.
Koga Hideaki
Takahashi Yasuie
Tsuzuki Isao
Herrmann Allan D.
Toyota Jidosha Kogyo Kabushiki Kaisha
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