Method and apparatus for charging dampers with pressurized gas

Details Method and apparatus for charging dampers with pressurized gas Method and apparatus for charging dampers with pressurized gas

1995-07-27

1996-12-03

Recla, Henry J.

Fluent material handling, with receiver or receiver coacting mea

Filling means with receiver or receiver coacting means

With receiver and supply securing means

141384, 141 64, 141 98, 141368, 18832221, 267 6428, B65B 104, B65B 300

Patent

active

055798144

ABSTRACT:
A method and apparatus for charging a damper with pressurized gas by forming a flow passage between the dust lip of the oil seal and the piston rod. The flow passage is formed by locally deforming the dust lip under the action of a distortion clamp. A source of pressurized gas is then placed in communication with the flow passage. The pressurized gas causes the oil seal to be displaced away from the piston rod, and the gas enters the damper between the oil seal and the piston rod. When the gas within the damper has attained the desired pressure, the distortion clamp is released allowing the dust lip to return to normal circumferential contact with the piston rod, and the source of pressurized gas is removed. The pressurized gas is retained in the damper after charging by the seal engaging the rod.

REFERENCES:
patent: Re28329 (1975-02-01), Nicholls
patent: 4005769 (1977-02-01), Itoh
patent: 4114866 (1978-09-01), Kato
patent: 4131139 (1978-12-01), Tanabe
patent: 4185721 (1980-01-01), Karklins et al.
patent: 4219190 (1980-08-01), Nagase
patent: 4483377 (1984-11-01), Cubalchini
patent: 4491160 (1985-01-01), Axthammer et al.
patent: 4556092 (1985-12-01), Cubalchini
patent: 4564138 (1986-01-01), Bethell et al.
patent: 4865170 (1989-09-01), Ciepichal

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