Gas spring

Details Gas spring Gas spring

2008-07-22

2008-07-22

King, Bradley T (Department: 3683)

Spring devices

Vehicle

Comprising compressible fluid

C267S124000, C188S322170

Reexamination Certificate

active

07401769

ABSTRACT:
A method of manufacturing a gas spring including the steps of fitting and inserting a first seal member, an annular space member, a second seal member, and a rod guide, to an outer periphery of a piston rod in accordance with this order from a side of a piston, a step of providing a piston rod assembly in which a lubricant is previously injected, in an annular chamber defined among the first seal member, the space member and the second seal member, and a step of charging a pressurized gas into an inner portion of a cylinder from an opening portion of the cylinder under a sealed state, and thereafter pressing the rod guide fitted and inserted to the piston rod, thereby inserting the piston rod assembly into the inner portion of the cylinder from the opening portion of the cylinder and fixing the rod guide to the cylinder.

REFERENCES:
patent: 4102538 (1978-07-01), Bertin
patent: 4108423 (1978-08-01), Skubal
patent: 4306729 (1981-12-01), Hiramatsu et al.
patent: 4718647 (1988-01-01), Ludwig
patent: 4948104 (1990-08-01), Wirges
patent: 5011121 (1991-04-01), Oriola et al.
patent: 5048647 (1991-09-01), Fuhrmann et al.
patent: 5735371 (1998-04-01), Jobelius et al.
patent: 6705201 (2004-03-01), Knopp et al.
patent: 2003/0052458 (2003-03-01), Zafar
patent: SHO 56-99139 (1979-02-01), None
patent: SHO 58-175233 (1983-11-01), None
patent: HE1221042 (1990-01-01), None

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