Spring devices – Vehicle – Comprising compressible fluid
Patent
1997-08-13
1999-11-02
Graham, Matthew C.
Spring devices
Vehicle
Comprising compressible fluid
267 6411, F10F 934
Patent
active
059755075
ABSTRACT:
A gas spring with a filler block assembly defining the rear sealing wall of the gas chamber of the gas spring. The filler block assembly has an end cap with an internally threaded through passageway for filling the chamber with compressed gas. An externally threaded screw plug is threaded into the cap passageway and has an enlarged head portion with a conical sealing surface. An O-ring encircles the screw plug and is wedge-captured sealably between its sealing surface and a radial sealing surface on the cap front face. The screw plug and passageway threads are constructed and arranged to provide a gas chamber filling leakage path therebetween such that the gas spring chamber can be charged with pressurized nitrogen gas admitted into the rear end of the cap filling passageway with the screw plug and O-ring already installed in the cap in final operable position to function as a one-way check valve for admitting the pressurized gas to the spring chamber and to prevent egress of the gas therefrom. In one embodiment, the screw plug is imperforate. In another embodiment, the screw plug has a bleed passageway extending axially therethrough communicating at one end with the gas spring chamber and at the other end with the filling passageway. A bleed plug is threadably received in the cap filling passageway, and a sealing gasket is captured between the bleed plug and the screw plug for sealing the adjacent end outlet of the screw plug bleed passageway. The gas filling leakage path then also includes the clearance space between the threads of the bleed plug and the cap filling passageway.
REFERENCES:
patent: 4792128 (1988-12-01), Holley
patent: 4813655 (1989-03-01), Hennells
patent: 4838527 (1989-06-01), Holley
patent: 5020570 (1991-06-01), Cotter
patent: 5303906 (1994-04-01), Cotter et al.
patent: 5344125 (1994-09-01), Cotter
patent: 5386975 (1995-02-01), Wallis
Diebolt International, Inc.
Graham Matthew C.
LandOfFree
Gas spring with filler block does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gas spring with filler block, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas spring with filler block will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2124825