Motors: expansible chamber type – With signal – indicator or inspection means
Patent
1986-10-21
1988-09-13
Garrett, Robert E.
Motors: expansible chamber type
With signal, indicator or inspection means
91362, 91363R, 91381, 417498, 13762565, F15B 912, F15B 1316, F15B 903
Patent
active
047700815
ABSTRACT:
A servomechnism made up of a relatively small number of components has a pintle that is moved back and forth by a hydraulic actuator, an input member disposed opposite to the pintle and capable of reciprocating parallel with the pintle, a spool capable of reciprocating parallel to both the input member and the pintle, a pair of idle gears pivoted to the spool, and a hydraulic circuit. The input member has a rack opposite to a rack formed on the pintle. The spool is mounted between these racks. The idle gears are in mesh with the racks. When the input member is moved to shift the spool out of its neutral position, the actuator is unlocked to return the spool to its neutral position.
REFERENCES:
patent: 1119324 (1914-12-01), Sprater
patent: 1563282 (1925-11-01), Jessup
patent: 2874542 (1959-02-01), Tear
patent: 2915034 (1959-12-01), Russell
patent: 2974641 (1961-03-01), Brown et al.
patent: 4161905 (1979-07-01), Ota
patent: 4235156 (1980-11-01), Olsen
patent: 4526342 (1985-07-01), Wakefield
Garrett Robert E.
Shimadzu Corporation
Williamson Mark A.
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