Rotary actuator

Details Rotary actuator Rotary actuator

1991-06-12

1992-10-27

Herrmann, Allan D.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

92 31, F16H 2702, F01B 300

Patent

active

051579820

ABSTRACT:
A rotary actuator includes a cup-shaped piston which is movable back and forth and rotatable on its axis. A driving shaft has on its circumferential face a threaded area engaging with a threaded internal face of the cup-shaped piston. The driving shaft can be rotated on its axis during rectilinear motion of the cup-shaped piston. A rotary member has an area engaging with an outer portion of the cup-shaped piston. A casing accommodates the cup-shaped piston, the driving shaft, and the rotary member. The casing has a slit which can be tightened for securing the rotary member to the casing. A regulating member limits the length of strokes of the cup-shaped piston.

REFERENCES:
patent: 1365149 (1921-01-01), Breed
patent: 3141387 (1964-07-01), Geyer
patent: 4129061 (1978-12-01), Bergmann et al.
patent: 4290344 (1981-09-01), Adams
patent: 4342257 (1982-08-01), Weyer
patent: 4383395 (1983-05-01), Wilger et al.
patent: 4590816 (1986-05-01), Weyer
patent: 4772849 (1988-09-01), Tedder

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