Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1988-12-27
1989-12-05
Butler, Douglas C.
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
267219, 2671412, B60K 512, F16F 1300
Patent
active
048847895
ABSTRACT:
Disclosed herein is a fluid-filled mounting device which comprises an inner cylindrical member; an outer cylindrical case surrounding the inner cylindrical member; a cylindrical elastomer block disposed between the inner cylindrical member and the outer cylindrical case; a structure defining in the elastomer block a main recess; a structure defining in the elastomer block a deformable chamber at a portion diametrically opposite to the portion where the main recess is defined, the deformable chamber having an outer wall which includes first and second diaphragms, the first diaphragm having a spring constant different from that of the second diaphragm; an annular hollow structure disposed about the elastomer block in a manner to cover the main recess and the first and second diaphragms, thereby to define a main fluid chamber by the main recess, a first auxiliary fluid chamber by the first diaphragm and the annular hollow structure and a second auxiliary fluid chamber by the second diaphragm and the annular hollow structure; a first flow restricting path defined by the annular hollow structure for fluid communication between the main fluid chamber and the first auxiliary fluid chamber; and a second flow restricting path defined by the annular hollow structure for fluid communication between the main fluid chamber and the second auxiliary fluid chamber.
REFERENCES:
patent: 4690389 (1987-09-01), West
patent: 4693456 (1987-09-01), Kanda
patent: 4705410 (1987-11-01), Broock
patent: 4728086 (1988-03-01), Ishiyama et al.
patent: 4749173 (1988-06-01), Kanda
patent: 4756514 (1988-07-01), Kanda
patent: 4763884 (1988-08-01), Matsui et al.
patent: 4768760 (1988-09-01), LeFol
patent: 4809799 (1989-03-01), Ozaki et al.
Tabata Toshiyuki
Takeda Masaru
Butler Douglas C.
Nissan Motor Co,. Ltd.
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