Transmission with reverse mechanism

Machine element or mechanism – Gearing – Interchangeably locked

Patent

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Details

Other Related Categories

192 51, 192 93R, F16H 506

Type

Patent

Status

active

Patent number

047139790

Description

ABSTRACT:
A transmission includes a forward shift drum and an overlying and coaxial reverse shift drum. The drums are rotatable, but not longitudinally translatable with respect to each other. The drums each include lead grooves for guiding a shift fork pin therealong in portions of the grooves which overlap and intersect each other. When one of the lead grooves guides the shift fork pin into a gear position, the other lead groove serves as a stop, so that unintentional engagement of remaining gears with the drive shaft is prevented without the use of a separate special lock mechanism.

REFERENCES:
patent: 4455884 (1984-06-01), Tsuruta et al.
patent: 4635506 (1987-01-01), Imaizumi et al.

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