Spring return cylinder actuator

Details Spring return cylinder actuator Spring return cylinder actuator

1988-04-08

1989-12-12

Garrett, Robert E.

Expansible chamber devices

Convertible, or changeable by assembly or disassembly

92128, 92130R, 92161, 137270, F01B 2900, F01B 3100

Patent

active

048859818

ABSTRACT:
A reversible spring return cylinder actuator having a pair of piston rods extending from a common spring load piston to the exterior of the housing. In a non-pressure position of the piston, one of the piston rods extends further from the housing than the other. Either piston rod and either end of the housing can be mounted to a device to be actuated so that the same actuator can be used to define a non-pressure extend or retracted actuator without disassembly of the actuator.

REFERENCES:
patent: 2527814 (1950-10-01), Hanssen
patent: 2643667 (1953-06-01), Dahl
patent: 3122065 (1964-02-01), Laun
patent: 4523515 (1985-06-01), Smith
patent: 4582082 (1986-04-01), Tosseghini
patent: 4712576 (1987-12-01), Ariizumi et al.

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