Patent ID: 6105927
Filing Date: 2000-08-22
Classification: F16K,Y10T

Abstract:
A low friction fluid motor comprising:a shell;a diaphragm separating the shell into a first chamber and a second chamber;a port in the shell for connecting a source of pressure or vacuum to the second chamber;an actuating member connected to the diaphragm for axial movement therewith in the first chamber, the actuating member telescopically extending into a cam assembly which translates the axial movement into a rotational movement, the cam assembly having a motion transfer connection accessible through an aperture in the shell adjacent the first chamber for transferring the rotational movement to an external device;wherein the cam assembly includes a tubular cam follower which is supported adjacent an interior wall surface of the shell adjacent the aperture inside the first chamber for rotation about an axis thereof by an interior surface of a tubular bushing which is fixedly attached to the interior wall surface of the shell adjacent the aperture inside the first chamber, and wherein axial movement of the actuating member causes rotational movement of the cam follower within the bushing inside the first chamber for transferring the rotational movement to the external device.