Patent ID: 6070855
Filing Date: 2000-06-06
Classification: F04B,Y10S

Abstract:
A minor-amount release valve comprising:a valve seat including a first end adapted to be mounted in a receptacle communicated with an air chamber and a second end, the valve seat including a through hole for communicating the receptacle with atmosphere, the first end of the valve seat including an end face having a recessed section around the through hole,a stem slidably extended through the through hole of the valve seat in a manner that an air passage is defined between the receptacle and atmosphere, the stem including a first end located in the receptacle and a second end for manual operation, the first end of the stem including a flange formed thereon, the stem further including a transverse hole that communicates with the air passage,a seal ring positioned in the recessed section of the first end of the valve seat and having a width smaller than a diameter of the transverse hole, the seal ring blocking the air passage when the transverse hole of the stem is not aligned with the seal ring, and air in the air chamber is released to atmosphere when the transverse hole is aligned with the seal ring, andan elastic member attached between the flange and an end wall that defines a portion of the receptacle, the elastic member biasing the stem to a sealing position in which the transverse hole of the stem is not aligned with the seal ring.