Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Patent
1987-01-20
1989-06-13
Braun, Leslie A.
Machine element or mechanism
Mechanical movements
Reciprocating or oscillating to or from alternating rotary
744248B, 744248C, 74441, 92 2, 92 33, F01B 300, F16H 2524, F16H 5518
Patent
active
048381039
ABSTRACT:
A fluid-powered actuator having a body with interior helical grooves, an output shaft with exterior helical grooves, a first set of rollers in rolling engagement with only the body grooves and axially skewed at an angle corresponding to the lead angle of the body grooves, a second set of rollers in rolling engagement with only the output shaft grooves and axially skewed at a skew angle corresponding to the lead angle of the output shaft grooves, and an axially reciprocating piston sleeve mounted within the body and retaining the rollers in fixed axial and circumferential position relative to the piston sleeve during powered operation of the device. In several embodiments, the first and second sets of rollers are axially spaced apart.
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Anchell Scott
Braun Leslie A.
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