Key-shift transmission

Details Key-shift transmission Key-shift transmission

1988-08-17

1989-03-07

Wright, Dirk

Machine element or mechanism

Gearing

Interchangeably locked

74701, 464183, 403340, 29463, F16H 308

Patent

active

048095605

ABSTRACT:
A hollow shaft composed of a pair of trough-shaped shaft halves (15A) is employed as a speed-change shaft (15) for a key-shift transmission. Each of the shaft halves includes at both sides of an arched inner surface a pair of axially extending flattened end surfaces one of which has thereon an axially elongated projection (19) and the other of which has therein an axially elongated recess (20). The shaft halves are engaged to each other co-rotatably by fitting the projections of the respective shaft halves into the recesses of the other respective shaft halves. The projections and recesses are sized such that a pair of elongated axial grooves (21) are formed in an outer surface of the change shaft. A pair of shift keys (18) are disposed within such axial grooves for coupling speed-change gears (16F.sub.1 -16F.sub.5) selectively to the change shaft.

REFERENCES:
patent: 429175 (1890-06-01), Ogilvy
patent: 831416 (1906-01-01), Chalmers
patent: 3599509 (1971-08-01), Romer
patent: 3600962 (1971-08-01), Ivanchich
patent: 3812735 (1974-05-01), Von Kaler et al.
patent: 4141225 (1979-02-01), Varner
patent: 4656886 (1987-04-01), Edwards
patent: 4662241 (1987-05-01), Edwards
patent: 4702120 (1987-10-01), Okada et al.
patent: 4713983 (1987-12-01), Rundle

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