F - Mech Eng,Light,Heat,Weapons – 15 – B
Patent
F - Mech Eng,Light,Heat,Weapons
15
B
74/63
F15B 15/06 (2006.01) F16H 21/54 (2006.01) F16K 31/16 (2006.01)
Patent
CA 1077744
ABSTRACT OF THE DISCLOSURE A device for interconverting linear and rotatory motions, and particularly a pressure fluid operated actuator for rotary plug valves and the like. A piston axially slideable and rotatable in a cylinder is supported by first and second sets of connecting elements which are spaced from and inclined to the axis of the cylinder. Each element of one set is pivotally connected at one end with a fixed member and at the other with the piston. Each element of the other set is pivotally connected at one end with the piston and at the other with a rotary output element, for example, a shaft. Axial movement of the piston is translated - 1 - into rotatory movement of the output element by pivotal action of the connecting elements. The connecting elements of the first and second sets extend from the fixed member to the piston and from the piston to the output element in opposite circumferential directions. This configuration enables the torque characteristic to be tailored readily to suit particular applications by appropriate selection of the relative dimensions of the components of the device. - 2 -
284344
Bunyard Alan D.
Marchant Derek N.
Norris Kenneth W.
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