Combined check and exhaust valve for high pressure gas spring

Details Combined check and exhaust valve for high pressure gas spring Combined check and exhaust valve for high pressure gas spring

1986-11-21

1988-01-26

Butler, Douglas C.

Spring devices

Vehicle

Comprising compressible fluid

137102, 18832221, 251 634, F16F 943

Patent

active

047212896

ABSTRACT:
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 precharged 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 premit 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 extends through the end cap for relieving 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 controlled 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.

REFERENCES:
patent: 3034527 (1962-05-01), Hennells
patent: 3281138 (1966-10-01), Oster
patent: 3519011 (1970-07-01), Pennanen
patent: 4257580 (1981-03-01), Schnitzius
patent: 4342448 (1982-08-01), Wallis
patent: 4550899 (1985-11-01), Holley
patent: 4621796 (1986-11-01), Fresch et al.
patent: 4662616 (1987-05-01), Hennells
patent: 4664141 (1987-05-01), Starr
patent: 4664362 (1987-05-01), Hennells

Affiliated with

Also associated with

Rating

Combined check and exhaust valve for high pressure gas spring does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Combined check and exhaust valve for high pressure gas spring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combined check and exhaust valve for high pressure gas spring will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1464995