Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Patent
1976-03-12
1977-08-23
Maslouski, Paul E.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
91369B, 92 98D, 92 99, F15B 910, F01B 1900, F16J 302
Patent
active
040432513
ABSTRACT:
Improvements in a servomotor including a retainer coupling an annular diaphragm having its outer periphery sealingly attached to the servomotor housing and an axially movable power piston within the housing. The piston has a boss axially extending through the annular diaphragm and an external flange extending radially from the outer periphery of the boss for positioning adjacent the diaphragm, the diaphragm and power piston forming two pressure chambers. A valve member is slidably and sealingly disposed in a bore formed in the boss of the power piston for regulating pressure in the pressure chambers. The retainer has an axially extending cylindrical seat in which the boss is tightly positioned and a flange radially extending from the seat for pressing an inner portion of the diaphragm against the power piston flange. A pin is retained in radially aligned openings in the power piston boss and the cylindrical seat of the retainer and a groove in the outer periphery of the valve member for coupling the diaphragm against the power piston flange.
REFERENCES:
patent: 3177777 (1965-04-01), Kenrick
patent: 3548595 (1970-12-01), Pech et al.
patent: 3688647 (1972-09-01), Kytta
patent: 3754450 (1973-08-01), Putt et al.
Aisin Seiki Kabushiki Kaisha
Maslouski Paul E.
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