Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1990-08-15
1992-02-11
Butler, Douglas C.
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
2671403, 267219, F16F 1300
Patent
active
050870211
ABSTRACT:
A fluid-filled cylindrical elastic mount including an inner sleeve, an outer sleeve disposed radially outwardly of the inner sleeve with a predetermined radial spacing therebetween, and a generally annular elastic body interposed between the two sleeves for elastic connection therebetween. The elastic body at least partially defines an annular fluid chamber formed between the two sleeves and extending over the entire circumference of the mount. The fluid chamber has a substantially constant cross sectional area over the entire circumference thereof, and is filled with a non-compressible fluid having a kinematic viscosity of not higher than 100 centistokes. The elastic mount further includes an annular movable member accommodated in the fluid chamber, such that the movable member can be radially displaced relative to the inner and outer sleeves. The movable member and the fluid in the fluid chamber cooperate to provide a restricted resonance portion through which the non-compressible fluid is forced to flow with a resistance upon application of a vibrational load between the two sleeves.
REFERENCES:
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patent: 4768760 (1988-09-01), Le Fol
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patent: 4883260 (1989-11-01), Kanda
patent: 4893799 (1990-01-01), de Fontenay
Nanno Takanobu
Tanahashi Hiroaki
Butler Douglas C.
Tokai Rubber Industries Ltd.
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