Valve with spring biased seal
OwnerIakovos Marabeasinventor
Life of this patent
Estimating the term…
Abstract
A valve in which a member is movable within the valve body so as to open and close access to a passage within the valve, and, when the movable member is closing access to the passage within the valve, a sealing member is engaged between the movable member and an end wall of the passage. The sealing member is made of a flexible but non-resilient material, and elasticity is imparted by means of a resilient member which causes the non-resilient material to be forced into engagement with the end wall. Limits are set for relative movement of the end wall and the movable member to prevent damaging flexure of the non-resilient material.
Claims9
A valve structure comprising:
- a valve body with an inlet and outlet connected by a fluid passing bore, having an area of reduced cross-section adjacent the outlet;
- a piston-like member movable in said bore towards a fixed bore endwall extending in a plane perpendicular to the axis of movement of said piston-like member;
- said piston-like member formed with a conical endwall movable into a mating conical portion in the bore endwall to block same;
- a circumferential recess in said piston-like member adjacent the conical endwall, said recess having two opposed walls, one wall of which is short and the other long, the short wall movable into the conical portion of the bore;
- a resilient easily bent in elastic sealing member in said recess, said sealing member circumferentially surrounding said piston-like member, and formed with spaced legs extending above the short wall, and shorter than the long wall of said recess;
- and
- elastic means between the legs of said sealing member urging same apart from each other, whereby upon movement of said piston-like member to a bore blocking position, the legs will be compressed between the stationary bore endwall and the long wall of the recess.
Dependencies are inferred from the claim text.