Compact temperature compensating gas spring

Details Compact temperature compensating gas spring Compact temperature compensating gas spring

2006-08-29

2006-08-29

Kramer, Devon C. (Department: 3683)

Brakes

Internal-resistance motion retarder

With means compensating for change in temperature or viscosity

C267S064280, C188S313000, C188S322210

Reexamination Certificate

active

07097012

ABSTRACT:
A compact temperature compensating gas spring including a gas filled hollow cylinder and a piston assembly slidably received in the gas filled hollow cylinder. The piston assembly includes a piston head and a piston rod. The piston rod includes a temperature compensation chamber. The piston head includes an aperture formed therein in communication with the temperature compensation chamber. A temperature activated valve is operably connected to the aperture to control gas flow between the cylinder and the temperature compensation chamber.

REFERENCES:
patent: 2357278 (1944-08-01), O'Connor
patent: 4799577 (1989-01-01), de Carbon
patent: 5404972 (1995-04-01), Popjoy et al.
patent: 5722643 (1998-03-01), Chamberlin et al.
patent: 6152432 (2000-11-01), Perrin
patent: 6179099 (2001-01-01), Koch et al.

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