'apv', or attain's pneumatic valves

F - Mech Eng,Light,Heat,Weapons – 01 – L

Patent

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Details

F01L 9/02 (2006.01) F01L 1/14 (2006.01) F01L 1/18 (2006.01) F01L 1/20 (2006.01) F01L 1/26 (2006.01)

Patent

CA 2266243

A static piston with a circular opening in its center, solidly attached to the cylinder head, provided with passages for gas and lubricants, is surrounded by a larger diameter double-walled moving cylinder, whose smaller, inner wall reaches down through the circular opening of the said piston to connect with a valve stem and its lock, which when pulled down, pulls the said moving cylinder against the inside gas pressure to open the valve - while the said gas pressure lifts the assembly to close it.

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