F - Mech Eng,Light,Heat,Weapons – 16 – F
Patent
F - Mech Eng,Light,Heat,Weapons
16
F
267/68
F16F 9/43 (2006.01)
Patent
CA 1300180
CONTROL VALVE FOR GAS SPRING ABSTRACT OF THE DISCLOSURE A gas spring unit having a housing, and a piston assembly slidably supported within and projecting outwardly of the housing. The housing and piston assembly cooperate to define therebetween a pressure chamber which is pre- charged with a high pressure gas, specifically nitrogen, for absorbing external shock forces as imposed on the piston assembly. A first passage, containing a one-way check valve, extends through the end cap of the housing to permit charging of the pressure chamber with high pressure gas, and to additionally permit make up gas to be supplied to the chamber. A second passage permits relieving of pressure within the pressure chamber, such as due to overload or when relief of pressure is desired. A movable discharge valve is associated with the second passage, and the opening and closing of the discharge valve is con- trolled by a control piston which is slidably disposed within the end cap and has opposite ends thereof exposed to the pressures within the first and second passages for controlling the position thereof, and hence controlling the position of the discharge valve.
567442
Kirby Eades Gale Baker
Rantom Inc.
LandOfFree
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