Expansible chamber devices – Relatively movable working members – Interconnected with common rotatable shaft
Patent
1994-02-14
1996-02-20
Look, Edward K.
Expansible chamber devices
Relatively movable working members
Interconnected with common rotatable shaft
92130A, 92133, 92138, 74109, F01B 102, F01B 3100, F16H 2144
Patent
active
054920507
ABSTRACT:
A pneumatic actuator including a first housing having a first cylinder formed therein, a first piston slidably positioned within the cylinder of the first housing, a first rack connected to the first piston and extending therefrom, a second housing having a second cylinder formed therein, a second piston slidably positioned within the second cylinder of the second housing, a second rack connected to the second piston and extending therefrom, and a pinion engaging the first and second rack and rotatable relative to a movement of the first and second racks. The first piston has a center axis aligned with a point of contact between the first rack and the pinion. The second piston has a center axis aligned with a point of contact between the second rack and the pinion. Each rack is supported against the pinion by a pin supported by support members arranged transverse to the axis of the pinion.
REFERENCES:
patent: 3156160 (1964-11-01), Meyer et al.
patent: 3452961 (1969-07-01), Forsman
patent: 3570373 (1971-03-01), Tupker
patent: 3753386 (1973-08-01), Scott, Jr.
patent: 3971296 (1976-07-01), Tugwell
patent: 4094231 (1978-06-01), Carr
patent: 4487111 (1984-12-01), Prince
patent: 4627331 (1986-12-01), Fejes
patent: 4846050 (1989-07-01), Sibeud et al.
patent: 5024116 (1991-06-01), Kraft
patent: 5353690 (1994-10-01), Shin
Look Edward K.
Ryznic John E.
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