Machine element or mechanism – Control lever and linkage systems – Multiple controlled elements
Patent
1982-08-27
1984-10-16
Herrmann, Allan D.
Machine element or mechanism
Control lever and linkage systems
Multiple controlled elements
74477, G05G 912, G05G 510
Patent
active
044767390
ABSTRACT:
A gear-shift mechanism for a power transmission unit includes a fork shaft slidably supported from a housing assembly to be selectively shifted from its neutral position to forward and reverse positions, a detent mechanism for selectively retaining the fork shaft in its neutral and shifted positions, a shift head member slidable on the fork shaft, a one-way engagement mechanism for effecting engagement of the shift head member with the fork shaft in axial movement of the fork shaft to and away from its reverse position, and a shift arm member pivoted to the inner wall structure of the housing assembly and linked with the shift head member to retain an idler gear in its neutral position and to engage the same with driving and driven gears. The shift arm member is formed with first and second cam faces, and a spring loaded cam follower is assembled within the inner wall structure to be in engagement with the first cam face of the shift arm member to effect disengagement of the idler gear from the driving and driven gears and to be in engagement with the second cam face of the shift arm member to effect engagement of the idler gear with the driving and driven gears.
REFERENCES:
patent: 3731554 (1973-05-01), Renk
patent: 3971265 (1976-07-01), Kurisu
patent: 4022079 (1977-05-01), Hidaka
patent: 4275613 (1981-06-01), Worner et al.
Arai Hajime
Haga Shozi
Nozaki Tadashi
Herrmann Allan D.
Toyota Jidosha & Kabushiki Kaisha
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