Control apparatus for stepless transmission

Details Control apparatus for stepless transmission Control apparatus for stepless transmission

1990-12-19

1992-03-03

Braun, Leslie A.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74867, 74868, 3644241, B60K 4112, B60K 4118

Patent

active

050921983

ABSTRACT:
A control apparatus for a transmission apparatus which controls the change ratio by varying, by hydraulic pressure, the effective radius of a drive pulley (primary pulley) and that of a follower pulley (secondary pulley) with a belt arranged therebetween. The apparatus a change ratio control valve for controlling the change ratio and a change ratio fixing valve for forcibly fixing the change ratio if the engine is about to rotate excessively so that the excessive rotation of the engine is prevented.

REFERENCES:
patent: 4736655 (1988-04-01), Kumura et al.
patent: 4785689 (1988-11-01), Tanaka et al.
patent: 4811224 (1989-03-01), Kuerschner et al.
patent: 4846021 (1989-07-01), Hamano et al.
patent: 4930374 (1990-06-01), Simonyi et al.
patent: 4956972 (1990-09-01), Sasajima et al.
patent: 4995283 (1991-02-01), Sawasaki et al.
patent: 5007147 (1991-04-01), Imai et al.
U.S. patent application No. 07/466,231 to Morishige, filed 1/19/90.

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