Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1985-05-13
1987-04-28
Braun, Leslie
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74865, B60K 4122
Patent
active
046604421
ABSTRACT:
A creep-inhibiting device for use in an automotive vehicle equipped with a transmission mechanism coupled in series to a fluid coupling and having a frictionally engaging element. Control means interposed between the frictionally engaging element and an operating fluid source controls the power transmission capacity of the frictionally engaging element within a range from substantially zero to a predetermined value in dependence on a signal fluid pressure representative of engine load, to inhibit creeping of the vehicle when the vehicle engine is in a no-load state. The control means has a valve body selectively connecting and disconnecting an input fluid line to and from an output fluid line. A first pressure chamber defined by a first end face of the valve body is supplied with an operating fluid pressure in the output fluid line, while a second pressure chamber defined by a second end face of the valve body is supplied with the signal fluid pressure. A third fluid line having a restriction always connects the input and output fluid lines with each other, and a resilient member urges the valve body in a direction of connecting the input fluid line to the output fluid line. The operating fluid pressure in the output fluid line is allowed to escape through a drain line to a lower pressure zone by an amount corresponding to an amount by which the valve body is biased in a direction of disconnecting the input fluid line from the output fluid line.
REFERENCES:
patent: 4313353 (1982-02-01), Honig
patent: 4478108 (1984-10-01), Nishimura et al.
patent: 4501173 (1985-02-01), Honig
patent: 4513638 (1985-04-01), Nishikawa et al.
patent: 4513639 (1985-04-01), Hiramatsu
patent: 4526065 (1985-07-01), Rosen et al.
Aoki Takashi
Nishikawa Masao
Sato Yoichi
Braun Leslie
Honda Giken Kogyo K.K.
Lessler Arthur L.
Novais David
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