초록 ▼

A check valve includes: a valve body having an inlet, an outlet, and an internal cavity, wherein the inlet, outlet and cavity are in fluid communication and define a flow path; a disk positioned within the cavity, a hinge pin assembly pivotally interconnecting the valve body and the disk; a biasing

A check valve includes: a valve body having an inlet, an outlet, and an internal cavity, wherein the inlet, outlet and cavity are in fluid communication and define a flow path; a disk positioned within the cavity, a hinge pin assembly pivotally interconnecting the valve body and the disk; a biasing device associated with the disk for biasing the disk toward the closed position; and an indicator associated with the hinge pin assembly and attached to the valve body. The disk pivots about a pivot axis between a closed position, in which the disk contacts a seat surface within the cavity, thereby preventing fluid flow along the flow path between the inlet and the outlet, and an open position, in which the disk does not contact the seat surface, thereby enabling fluid flow along the flow path between the inlet and the outlet. The hinge pin assembly includes: a substantially cylindrical hinge pin having a longitudinally-extending bore formed therein and attached to one of the disk and the valve body; and a substantially cylindrical hinge pin core attached to the other of the disk and the valve body. The hinge pin extends substantially parallel to the pivot axis, and the hinge pin bore is eccentrically located within the hinge pin. The hinge pin core extends within the hinge pin bore substantially parallel to the pivot axis. The hinge pin assembly also includes structure eccentrically and rotatably mounting the hinge pin to one of the valve body and the disk. The indicator, preferably an indicator member, extends through a bore in the hinge pin core and is attached to the disk and an indicating device, such as a rheostat or dial, mounted on the valve body.

대표청구항 ▼

[ That which is claimed is:] [17.] A check valve, comprising:a valve body having an inlet, an outlet, and an internal cavity, said inlet, said outlet and said cavity being in fluid communication and defining a flow path, said cavity having a seat surface associated with said flow path;a disk positio

[ That which is claimed is:] [17.] A check valve, comprising:a valve body having an inlet, an outlet, and an internal cavity, said inlet, said outlet and said cavity being in fluid communication and defining a flow path, said cavity having a seat surface associated with said flow path;a disk positioned within said cavity;a hinge pin assembly pivotally interconnecting said valve body and said disk such that said disk pivots about a pivot axis between a closed position, in which said disk contacts said seat surface, thereby preventing fluid flow along said flow path between said inlet and said outlet, and an open position, in which said disk does not contact said seat surface, thereby enabling fluid flow along said flow path between said inlet and said outlet, said hinge pin assembly comprising:a substantially cylindrical hinge pin having a longitudinally-extending bore formed therein, said hinge pin being rotatably mounted to said valve body and extending substantially parallel to said pivot axis, said hinge pin bore being eccentrically located within said hinge pin;a substantially cylindrical hinge pin core rotatably mounted to said disk and extending within said hinge pin bore substantially parallel to said pivot axis and being rotatably mounted therein, said hinge pin core including a longitudinally extending bore eccentrically located within said hinge pin core;an indicator member attached to said disk and extending longitudinally within said bore of said hinge pin core;means for eccentrically and rotatably mounting said hinge pin to one of said valve body and said disk; andbiasing means for biasing said disk toward the closed position; anda rheostat attached to said indicator member, said rheostat being responsive to rotation of said indicator member, said rheostat being attached to said valve body.