Spring devices – Vehicle – Mechanical spring and nonresilient retarder
Patent
1991-03-05
1992-04-07
Oberleitner, Robert J.
Spring devices
Vehicle
Mechanical spring and nonresilient retarder
2671401C, B60G 1506
Patent
active
051021080
ABSTRACT:
A vibration-damping device with hydraulic damping has a base body, a cylindrical holder secured to the base body, and an outer cylinder press-fitted within the cylindrical holder. A vibration-damping rubber body provided with a main liquid chamber enclosing a damping liquid is disposed within the outer cylinder, and retains an inner cylinder. A thin rubber wall is disposed between the outer cylinder and the vibration-damping rubber body, and defines an auxiliary liquid chamber with the vibration-damping rubber body. This auxiliary liquid chamber communicates with the main liquid chamber by way of a throttled passageway. The cylindrical holder has a rib-like projection which radially outwardly project therefrom, and extends in a circumferential direction thereof. This projection defines a groove along an inner surface of the cylindrical holder. This groove communicates with a space defined by the outer cylinder and the thin rubber wall by way of a through hole formed in the outer cylinder, whereby the thin rubber wall freely deforms due to the flow of the damping liquid from the main liquid chamber to the auxiliary liquid chamber, and accordingly, effective vibration-damping operation can be performed.
REFERENCES:
patent: 4790520 (1988-12-01), Tanaka et al.
patent: 4872650 (1989-10-01), Tabata et al.
patent: 4998345 (1991-03-01), Funahashi et al.
patent: 5007304 (1991-04-01), Ide
Asano Tetsuo
Fujinami Kyouichi
Kawahara Hiroaki
Maeno Takashi
Oberleitner Robert J.
Toyoda Gosei Co,., Ltd.
Young Lee W.
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