Compact rotary power cylinder
AssigneeAoki Corporation
InventorYukio Okuyama
Life of this patent
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Abstract
A compact rotary power cylinder including a pair of pistons fitted in a cylinder housing, separating the housing into a first chamber and a pair of second chambers, so as to be reciprocally movable when a pressure impact is supplied selectively to the first and second chambers, and a torque stem provided through the housing perpendicularly to the reciprocal motion of the pistons so as to be rotatable in response to the reciprocal motion, in which a pair of connecting members are provided between the stem and the pistons so as to be movable in a radial direction of the stem. A relatively large breakaway torque is achieved with such structure.
Claims5
An improvement in a compact rotary power cylinder, including:
- a cylinder housing (1);
- a torque stem (4) rotatably provided across said housing;
- a pair of pistons (2, 3) slidably fitted in said housing either at both sides of said stem;
- a first chamber (A) defined by said housing, said stem and both of said pistons;
- a pair of second chambers (B, C) each respectively defined by said housing and either of said pistons;
- a pair of impact ports (P.sub.1, P.sub.2) formed in said housing for alternatively supplying and releasing a pressure impact;
- said ports communicating one with said first chamber and the other with said second chambers;
- interlock means for interlocking said pistons to thereby rotate with said stem;
- and
- said interlock means having a pair of slots (15) provided for said stem, a pair of engagement members (18, 19) each respectively loose-fitted in one of said slots, and a pair of fixing members (16, 17) each respectively fixing one of said engagement members to one of said pistons;
- comprising:
- said slots being radially cut in said stem;
- and
- a pair of recesses (S.sub.1, S.sub.2) each respectively formed in said stem for accommodating therein one of said fixing members.
Dependencies are inferred from the claim text.