Vibration-preventing rubber device

Details Vibration-preventing rubber device Vibration-preventing rubber device

1986-07-03

1988-06-28

Halvosa, George E. A.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

180300, 180312, 248636, 267219, F16F 1300

Patent

active

047534214

ABSTRACT:
This invention relates to a vibration-preventing rubber device in which a partition wall having a hub is positioned outside an inner cylinder and is interposed between an upper plate and a lower plate which are connected to the inner cylinder. An upper vibration-preventing rubber member is interposed between the partition wall and the upper plate and cooperates with the partition wall and the upper plate to define an upper damper liquid chamber. A lower vibration-preventing rubber member is interposed between the partition wall and the lower plate and cooperates with the partition wall and the lower plate to define a lower damper liquid chamber. The upper damper liquid chamber communicates with the lower damper liquid chamber through an orifice. The orifice is formed from a long curved pipe in the shape of a helix or the like.

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patent: 2540130 (1951-02-01), Lee
patent: 2555347 (1951-06-01), Lee
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patent: 2600090 (1952-06-01), Barber et al.
patent: 3154273 (1964-10-01), Paulsen
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patent: 4377216 (1983-03-01), Ueno
patent: 4460168 (1984-07-01), Obadal
patent: 4572488 (1986-02-01), Holmberg, Jr. et al.
patent: 4573656 (1986-03-01), Yoshida et al.
patent: 4611782 (1986-09-01), Hshijima et al.

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