Linear-rotary converter

Details Linear-rotary converter Linear-rotary converter

1977-08-08

1979-01-09

Wyche, Benjamin W.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

92 31, 74520, 74106, 92140, 251 58, G01B 530

Patent

active

041332156

ABSTRACT:
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 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.

REFERENCES:
patent: 582244 (1897-05-01), Tuckfeild
patent: 849506 (1907-04-01), Shadall
patent: 1122085 (1944-12-01), Dudgeon
patent: 3513754 (1970-05-01), John

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