Spring devices – Vehicle – Comprising compressible fluid
Patent
1989-01-13
1990-05-01
Kashnikow, Andres
Spring devices
Vehicle
Comprising compressible fluid
188314, 188318, 267 6419, 267 6428, 267122, F16F 904, F16F 500, F16F 906, F16F 943
Patent
active
049212230
ABSTRACT:
A hydro-pneumatic suspension system used in a vehicle, includes a cylindrical, hollow main housing having opposite open and closed ends, with an oil chamber in the interior thereof; a rod axially slidable in the main housing through the open end and having an outer end portion located outside of the main housing, an oil passage extending axially therethrough; a damping device mounted on the rod and including an orifice which connects the oil chamber with the oil passage; a cylindrical, hollow sub housing having opposite open and closed ends; a connecting passage connecting the oil passage with the open end of the sub housing, and being connected between the outer end portion of the rod and the open end of the sub housing; a metal bellows arranged coaxially within the sub housing so as to expand and contract axially therein, and having a closed free end and an open end sealed to the open end of the sub housing; a second oil chamber defined by an inner wall of the metal bellows, and communicating with the main housing oil chamber through the connecting passage and the rod oil passage; a gas chamber defined by an outer wall of the bellows and an inner wall of the sub housing, and containing a high-pressure compressed gas which is sealed therein for providing a spring force; and a gas spring constant-adjusting liquid contained in the gas chamber.
REFERENCES:
patent: 3140085 (1964-07-01), De Carbon
patent: 3380729 (1968-04-01), Hoffmann et al.
patent: 3788433 (1974-01-01), Katsumori
patent: 4103492 (1978-08-01), Sakazume
patent: 4153237 (1979-05-01), Supalla
patent: 4159756 (1979-07-01), Murakami et al.
patent: 4270771 (1981-06-01), Fujii
patent: 4311302 (1982-01-01), Heyer et al.
patent: 4614255 (1986-09-01), Monta et al.
Ezure Nobuya
Fukumura Takeo
Shinbori Takeyoshi
Kashnikow Andres
NHK Spring Co. Ltd.
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