Expansible chamber devices – One working member reciprocates and another rotates common...
Patent
1982-06-28
1985-02-12
Garrett, Robert E.
Expansible chamber devices
One working member reciprocates and another rotates common...
92 23, 92 27, 92 33, 91 21, 91 26, 91 27, 91 44, 91189A, 91392, 251 56, F01B 308
Patent
active
044983719
ABSTRACT:
This invention relates to direct acting rotary actuator cylinders wherein the linear motion of the piston is directly converted to angular motion by a means completely enclosed within the cylinder, which means comprises a slidable partitioning body engaging the circular cylindrical cavity in the cylinder in an air-tight sliding relationship and a circular cylindrical rod coaxially and rotatably disposed in said circular cylindrical cavity having a mid-section with a noncircular cross section of a diametrical dimension greater than the diameter of said circular cylindrical rod. Said slidable partitioning body comprises the first cylindrical member with a centrally disposed hole of noncircular cross section slidably and nonrotatably receiving said noncircular midsection of the circular cylindrical rod and slidably and rotatably receiving the circular portion of said circular cylindrical rod, which first cylindrical member further includes a means for converting the linear movement of said slidable partitioning body to the angular movement, and the second cylindrical member with the centrally disposed circular hole slidably and rotatably receiving the circular portion of said circular cylindrical rod in an air-tight manner, which second cylindrical member generates the linear movement powered by the difference in the fluid pressure acting on two opposite ends of said second cylindrical member. A means for generating a small amount of the linear movement on said circular cylindrical rod prior to its rotational movement in one direction and for completing the returning rotational movement followed by another small amount of the linear movement in the opposite direction is further included.
REFERENCES:
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patent: 3961559 (1976-06-01), Teramachi
patent: 4024794 (1977-05-01), Grubb
patent: 4092213 (1978-05-01), Nishimura
patent: 4114517 (1978-09-01), Teramachi
patent: 4192482 (1980-03-01), Goldman et al.
Lew Hyok S.
Lew Yon S.
Garrett Robert E.
Meyer Richard S.
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