Reciprocating linear fluid motor

Details Reciprocating linear fluid motor Reciprocating linear fluid motor

1984-08-16

1985-11-12

Maslousky, Paul E.

Tool driving or impacting

Drive controlled by relative axial movement of tool

Drive motor controlled

173119, 173134, 91165, 91220, 91320, F01B 2504, F01L 2504

Patent

active

045522278

ABSTRACT:
Hydraulic fluid pressure moves a piston (22) against a body of incompressible fluid (14), compressing a spring (42). The pressure is released, and the force of the stored energy in the spring (42) is transmitted to the piston (22) by the body of fluid (14) and drives the piston (22) through its power stroke. The fluid (14) is vented to an outlet (8) before the piston (22) reaches the end of its power stroke, removing the force from the piston (22) and allowing it to free travel through the remainder of the stroke. When the motor (2) is operating and the load is removed from the piston (22), the hydraulic fluid inlet (10) is short-circuited to the outlet (8) and the motor (2) automatically shuts off.

REFERENCES:
patent: 3712179 (1973-01-01), Hanson
patent: 3766830 (1973-10-01), Montabert
patent: 4230019 (1980-10-01), Caston
patent: 4380901 (1983-04-01), Rautimo et al.

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