Fluid powered actuator
AssigneeAir Power Systems Co., Inc.
InventorsWilliam Earl McBride, Kenneth E. Thompson
Life of this patent
Estimating the term…
Abstract
A three position fluid powered actuator having a piston reciprocally positioned within a cylindrical chamber in a body. The piston has a socket in communication with an axial opening through the piston. A piston shaft has a first end passing through the axial opening and into the socket and has a second end passing through a spring chamber in the body. A compression spring surrounds the piston shaft in the spring chamber. A pair of fluid passageways extend into the cylindrical chamber, whereby fluid pressure in a first passageway will move the piston in a first direction and fluid pressure in a second passageway will move the piston in a second direction.
Claims14
A fluid powered actuator comprising:
- a piston reciprocally positioned within a cylindrical chamber in a body, said piston having a socket in communication with an axial opening;
- a piston shaft having a first end passing through said axial opening of said piston and into said socket wherein movement of said shaft first end is restrained by a keeper and having an opposed second end passing into a spring chamber in said body, said spring chamber adjacent to said cylindrical chamber;
- a compression spring surrounding said piston shaft in said spring chamber;
- and
- a pair of fluid passageways to said cylindrical chamber, whereby fluid pressure in a first passageway will move said piston in a first direction and fluid pressure in a second passageway will move said piston in a second direction.
A fluid powered actuator comprising:
- a piston reciprocally positioned within a cylindrical chamber in a body, said piston having a spherical socket in communication with an axial opening;
- a piston shaft having a first end passing through said axial opening of said piston and into said spherical socket, wherein movement of said shaft first end is restrained by a keeper, and having an opposed second end passing into a spring chamber in said body and terminating in a coupler;
- a compression spring surrounding said piston shaft in said spring chamber;
- and
- means to supply fluid pressure to said cylindrical chamber to move said piston in a first direction and to move said piston in a second direction.
Dependencies are inferred from the claim text.