초록 ▼

A positive-action non-leaking shut-off valve that requires minimal arcuate movement of the manual actuator from full-open to full-closed position is provided by three major components. A valve housing has a water-flow channel therethrough along its longitudinal axis and a cylindrical bore through sa

A positive-action non-leaking shut-off valve that requires minimal arcuate movement of the manual actuator from full-open to full-closed position is provided by three major components. A valve housing has a water-flow channel therethrough along its longitudinal axis and a cylindrical bore through said valve housing transversal to said water-flow channel. A lever-actuated valve shaft fits snugly into said bore. The valve shaft carries a plug therein that is centered for rotation about the centerline of the bore through the housing. The plug stoppers the water-flow channel when it is rotated against the openings that the water-flow channel makes with the cylindrical bore.

대표청구항 ▼

An in-line shut-off valve comprising: a valve housing having a straight water flow channel therethrough and a cylindrical bore through the valve housing having its axis of symmetry perpendicular to the axis of symmetry of the water flow channel, said water flow channel terminating as two apertures i

An in-line shut-off valve comprising: a valve housing having a straight water flow channel therethrough and a cylindrical bore through the valve housing having its axis of symmetry perpendicular to the axis of symmetry of the water flow channel, said water flow channel terminating as two apertures in the wall of said cylindrical bore; a valve shaft placed for rotation about its axis of symmetry in said cylindrical bore, said valve shaft having a journal extending along a portion of said shaft and overlapping said apertures in the wall of said bore, said journal having a convex surface of curvature and an elongated concave cavity therein, opposite said convex surface, the cavity being equal in length along said shaft to the length of the journal, water flowing from one aperture to the other around the convex surface in the bore when the valve is open; and an elongated plug captured by the cavity in said journal, said plug having one side exposed and abutting the wall of said bore, the exposed surface of said plug being of a size to overlap one of the apertures in the wall of the cylindrical bore whereby rotation of said valve shaft causes said plug to slidably engage and seal this aperture.