Totally synchronized manual transmission units for use in a vehi

Details Totally synchronized manual transmission units for use in a vehi Totally synchronized manual transmission units for use in a vehi

1983-09-15

1985-07-30

Tapolcai, William E.

Machine element or mechanism

Gearing

Interchangeably locked

74475, 74477, F16H 338

Patent

active

045314187

ABSTRACT:
A gear-shift mechanism for a transmission unit which includes a fork shaft slidably supported in a housing assembly which is 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 the engagement between the shift head member and the fork shaft during axial displacement of the fork shaft toward and away from its reverse position, and a shift arm member pivotably mounted 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 engage the same with driving and driven gears. The detent mechanism includes a holder member having a slot in its upper portion and a shaft fixed to the upper side portion of the holder member. The head portion of the shaft fixed to the holder member can be engaged with another head portion provided at a select return spring holder.

REFERENCES:
patent: 1886154 (1932-11-01), Bixby
patent: 2951392 (1960-09-01), Backus
patent: 3479900 (1969-11-01), Mays
patent: 4373403 (1983-02-01), Malott et al.
patent: 4476739 (1984-10-01), Arai et al.
patent: 4483213 (1984-11-01), Takahasi
patent: 4774644 (1979-11-01), Nagy et al.

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