Patent ID: 8991416
Filing Date: 2015-03-31
Classification: F16K,Y10T

Abstract:
1. A shuttle valve comprising a body, a shuttle, and an actuator mechanism; said body having a first inlet port, a second inlet port, an outlet port, and a cavity, said cavity being connected by passages to said ports, wherein a first passage extends from said cavity to said first inlet port, and a second passage extends from said cavity to said second inlet port, so that fluid flows through said cavity when passing from said first inlet port to said outlet port and when passing from said second inlet port to said outlet port; said shuttle being movably disposed in said cavity in response to fluid pressure and having a first shuttle position for closing one of said first and second inlet ports from said outlet port and enabling fluid flow from the other of said first and second inlet ports to said outlet port, said shuttle having a second shuttle position for closing the other of said first and second inlet ports from said outlet port and enabling fluid flow from said one of said first and second inlet ports to said outlet port; said actuator mechanism including an actuator rod movably disposed in said body between a first actuator rod position and a second actuator rod position and an intermediate actuator rod position between said first and second actuator rod positions, and a lost motion connection between said actuator rod and said shuttle; wherein said shuttle is disposed in said first shuttle position when said actuator rod is disposed in said first actuator rod position, and said shuttle is disposed in said second shuttle position when said actuator rod is in said second actuator rod position; wherein said actuator rod extends into one of said first and second passages when said actuator rod is in said first actuator rod position, and wherein said actuator rod does not extend into the other one of said first and second passages when said actuator rod is in said second actuator rod position.