Patent ID: 8403428
Filing Date: 2013-03-26
Classification: B60T,F16K,Y10T

Abstract:
1. A check valve comprising: a main body with a valve chamber formed therein between inflow and outflow ports thereof; a spherical valve body received in the valve chamber; a valve seat for blocking the flow of working fluid from the valve chamber toward the inflow port when the spherical valve body is seated on the valve seat; and a resilient member arranged across the valve chamber and urging the spherical valve body to be seated on the valve seat, the resilient member including: an annular fixed portion fixed on a circumferential wall of the valve chamber; and a tongue piece portion extending from an inner edge on a radial one side of the annular fixed portion across the valve chamber to extend an end thereof beyond an inner edge on a radial other side of the annular fixed portion, the tongue piece portion being formed to be deflected from the annular fixed portion toward a valve seat side and being resiliently contacted with the spherical valve body at a center part thereof for disengageably pressing the spherical valve body against the valve seat.