Patent ID: 6024120
Filing Date: 2000-02-15
Classification: A61M,F16K,Y10S,Y10T

Abstract:
A pressure relief valve comprising:a housing containing a diaphragm body and an actuator, said diaphragm body forming a diaphragm opening, said diaphragm body separating said housing into a venting side and a suction side, said actuator including a piston having a proximal end and a distal end, said piston having a plurality of legs at said proximal end that forms a void therebetween, said piston being adapted for insertion through said diaphragm opening in a first position and a second position, wherein in said first position said diaphragm opening and said proximal end of said piston form an air-tight seal that prevents fluid flow communication between said venting side and said suction, and wherein in said second position said diaphragm opening moves down said piston from its proximal end towards its distal end in response to an increase in negative pressure in said suction, said diaphragm opening maintaining said air-tight seal against said piston until said diaphragm opening travels over a portion of said plurality of legs thereby establishing fluid flow communication between said venting side and said suction side through said void.