Oscillating piston motor

Details Oscillating piston motor Oscillating piston motor

1985-10-09

1988-11-15

Garrett, Robert E.

Expansible chamber devices

Displacement control of plural cylinders arranged in...

Axial adjustment of spaced, rigidly interconnected working...

92122, 92125, 277 81P, 277207R, F01B 3114, F15B 1524, F01C 900

Patent

active

047840471

ABSTRACT:
A hydraulic or pneumatic oscillating piston motor has a housing (1), a driven shaft (2) mounted in the housing for rotation and an oscillating piston (3) that is fixed to the shaft. The piston has two lever arms (49,8) having pressure areas of different size, which arms are sealed with respect to the housing (1) dividing the housing (1) into two working spaces (4,5) into which a pressure medium can be introduced. The oscillating piston (3), actuated by the pressure medium, is free to oscillate back and forth through a maximum angle of rotation which is determined by means of a stop (38) and the housing. The first lever arm is designated in the form of a bushing (49) whose shell surface along its external periphery is at least partly surrounded by a coaxial shell seal (64). This seal has uniformly distributed, rib-like sealing lips (75) along its periphery and interacts with a opposite surface (9) attached rigidly to the housing (1). The maximum angle of rotation of the oscillating piston (3) is at least 180.degree. and can be set to smaller maximum angles.

REFERENCES:
patent: 2209921 (1940-07-01), Horton
patent: 3688645 (1972-09-01), Reaves
patent: 4155685 (1979-05-01), Kunieda et al.
patent: 4611530 (1986-09-01), Stoll et al.

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