Patent ID: 9279433
Filing Date: 2016-03-08
CPC Classification: F15B,Y10T

Claim Text:
1. A poppet valve assembly comprising: a valve housing having a central bore; a first module disposed within the central bore, the first module comprising a first normally closed poppet valve and a second normally closed poppet valve, wherein each of the first and second normally closed poppet valves has an open position and a closed position; a central port formed in the first module, wherein the central port of the first module is adapted to be coupled to a first volume of a pneumatic cylinder; an exhaust port formed in the first module such that the central port is in fluid communication with the exhaust port when the first poppet valve is in the open position; and a supply port formed in the first module such that the central port is in fluid communication with the supply port when second poppet valve is in the open position, wherein the supply port is configured to be in fluid communication with a supply of pressurized fluid such that when the second poppet valve is in the open position, pressurized fluid is provided to the first volume of the pneumatic cylinder, and wherein the exhaust port is configured to vent pressurized fluid from the first volume of the pneumatic cylinder when the first poppet valve is in the open position, wherein the first normally closed poppet valve comprises a first volume and the second normally closed poppet valve comprises a second volume, wherein the first poppet valve comprises: and wherein the second poppet valve comprises: wherein the first poppet valve is configured to be maintained in the closed position by a supply of pressurized fluid introduced into the first volume, and the second poppet valve is configured to be maintained in the closed position by a supply of pressurized fluid introduced into the second volume, and wherein at least one seal is disposed on an external surface of the first module surrounding the first volume, and at least one seal is disposed on the external surface of the first module surrounding the second volume, all of said seals sealingly contact the central bore.