Two-hand safety control mechanism

Details Two-hand safety control mechanism Two-hand safety control mechanism

1986-08-18

1987-11-17

Wayner, William E.

Motors: expansible chamber type

With motive fluid valve

Two hand control

91462, F15B 1304

Patent

active

047065486

ABSTRACT:
A two hand safety control mechanism for a consumer actuated by pressure medium includes a safety valve blocking the supply of pressure medium during a faulty switching and venting the consumer. For maintaining a working position of the consumer, a plurality of control valves are provided which are dynamically self-regulating. By actuating a further control valve, the automatic retention can be cancelled in order to allow the consumer to return in its idle position.

REFERENCES:
patent: 2613787 (1952-10-01), Ledig
patent: 2974637 (1961-03-01), Holmes et al.
patent: 3170484 (1965-02-01), Benz et al.
Fluidic Circuit, Western Electric Technical Dig. No. 23, 7/1971, p. 51.

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