초록 ▼

The invention concerns improvements in a split leaflet check valve. A pair of curved leaflets are hinged to a base ring for swinging movement from a normally closed position to an open position whenever a fluid is moving through the conduit wherein the valve is mounted. At the closed position, porti

The invention concerns improvements in a split leaflet check valve. A pair of curved leaflets are hinged to a base ring for swinging movement from a normally closed position to an open position whenever a fluid is moving through the conduit wherein the valve is mounted. At the closed position, portions of each leaflet are seated upon the base ring and other portions are seated against each other to effect the closure. At the open position the leaflets, curved to the curvature of the conduit, lie against the sides of the passageway to provide for flow of fluid through the check valve with a minimum of turbulence. The hinge at the base of each leaflet is formed as a hook reaching into a side socket in the outer wall of the base ring. This check valve may be used where a minimal flow turbulence is desired such as in pipeline systems pumping sludge, artificial heart pumps and cardiac surgery.

대표청구항 ▼

A split leaflet check valve comprising: (a) a base ring having a seat surface at one side thereof and diametrically opposing socket portions at the outer wall thereof; (b) a pair of diametrically opposed curved leaflets with each having a base edge, side edges extending to a top point and a hinge me

A split leaflet check valve comprising: (a) a base ring having a seat surface at one side thereof and diametrically opposing socket portions at the outer wall thereof; (b) a pair of diametrically opposed curved leaflets with each having a base edge, side edges extending to a top point and a hinge means extending from the base edge and to a socket portion of the base ring to attach the leaflet to the base edge, and with each leaflet being proportioned such that with the valve closed, each leaflet base edge seats on the base ring seat surface and each leaflet side edge seats against an adjacent side edge of an adjacent leaflet; (c) a retainer tube wherein said base ring is fitted with said leaflets moving against the retainer tube when they swing to an open position; and (d) a flat surface on the retainer tube at the side of each leaflet to engage the adjacent leaflet point between the base edge and side edge of the leaflet as the leaflet swings from the open to the closed position and thereby limit lateral shifting of the leaflet during its opening and closing movements. The check valve defined in claim 3, wherein: the retainer tube is a comparatively narrow member; and a suture ring is mounted thereon.