Two-stage vacuum motor

Details Two-stage vacuum motor Two-stage vacuum motor

1977-04-08

1978-09-05

Maslousky, Paul E.

Motors: expansible chamber type

Relatively movable working members with one having motive...

One working member forms movable chamber for another

91189R, 91422, 92 94, 92100, F15B 1118, F01B 720

Patent

active

041110994

ABSTRACT:
A vacuum motor suitable for actuating a carburetor choke valve has primary and secondary stages responsive to separate vacuum signals. The secondary stage is carried by the primary stage and has a valve which opens upon full retraction of the primary stage to permit application of a vacuum signal to the secondary stage.

REFERENCES:
patent: 762627 (1904-06-01), Fink
patent: 2986125 (1961-05-01), Young et al.
patent: 3381582 (1968-05-01), Golden
patent: 3657966 (1972-04-01), Campbell

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