Motors: expansible chamber type – Fluid supply through diverse paths to single expansible chamber – Position responsive
Patent
1981-11-04
1984-08-28
Maslousky, Paul E.
Motors: expansible chamber type
Fluid supply through diverse paths to single expansible chamber
Position responsive
91 31, 91231, 91321, 91325, F01B 718, F01L 2102
Patent
active
044676999
ABSTRACT:
A valveless, pneumatic motor including a cylinder within which a hammer piston reciprocates and a buffer ring fixedly secured within the cylinder. A source of motive fluid under pressure cooperates with the buffer ring which through supply porting provides pressurized motive fluid alternately to opposed faces of the piston head. Intake ports are formed within the piston stem and adapted to cooperate intermittently with the buffer ring supply porting to provide motive fluid to the piston interior wherein an axial bore transmits the fluid along the stem toward the piston head and discharge porting delivers the motive fluid to the forward face of the piston head thereby urging the piston rearwardly. A reduced diameter portion of the piston stem then comes into communication with the buffer ring supply porting and permits the motive fluid to impinge directly on the rearward face of the piston head without passage through the piston to urge the piston forwardly. Specific porting arrangements and mechanical relationships are disclosed.
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Joy Manufacturing Company
Maslousky Paul E.
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