Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1988-08-10
1989-08-08
Kashnikow, Andres
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
2671405, 267292, 248562, 248636, F16F 1504
Patent
active
048545619
ABSTRACT:
A fluid filled elastic bushing, including a tubular inner sleeve to which a shaft member is fixed, and a tubular outer sleeve which is secured to a support structure and which is disposed radially outwardly of the inner sleeve so as to form an annular space between the outer and inner circumferential surfaces of the inner and outer sleeves, and to form a cylindrical space between opposed bottom walls at the closed ends of the two sleeves. The bushing further includes a cylindrical elastic connecting member which fluid tightly fills a portion of the annular space adjacent to the open ends of the two sleeves, and thereby cooperates with the sleeves to define a fluid chamber which includes a remaining portion of the annular space and the cylindrical space and which is filled with the fluid. A first elastic operating member is formed on one of the outer and inner circumferential surfaces of the two sleeves, so as to occupy a part of the remaining portion of the annular space and cooperate with the other circumferential surface to define an annular restricted portion of the fluid chamber. A second elastic operating member is formed on one of the bottom walls of the sleeves, so as to occupy a part of the cylindrical space and cooperate with the other bottom wall to define a planar restricted portion of the fluid chamber.
REFERENCES:
patent: 4139246 (1979-02-01), Mikoshiba et al.
patent: 4416445 (1983-11-01), Coad
patent: 4744677 (1988-05-01), Tanaka et al.
patent: 4770396 (1988-09-01), Jouade
Kashnikow Andres
Le Mark T.
Nissan Motor Company Limited
Tokai Rubber Industries Ltd.
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