Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Reexamination Certificate
2007-01-23
2007-01-23
Schwartz, Christopher P. (Department: 3683)
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
Reexamination Certificate
active
11220577
ABSTRACT:
A fluid filled active vibration damping device wherein a first and a second mounting member are coupled by a rubber elastic body, thereby forming a pressure receiving chamber defined at one part by the rubber elastic body, with a non-compressible fluid sealed therein, and at another part by an excitation plate capable of displacement. An electromagnetic actuating assembly are disposed on the pressure receiving chamber side with the excitation plate therebetween. The excitation plate is oscillated by application of electronical current to a coil member in the electromagnetic actuating assembly. The output member projects out towards the excitation plate from the electromagnetic actuating assembly, and a permanent magnet is disposed in the output member and/or the excitation plate in order to couple the output member and the excitation plate through magnetic force.
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Muramatsu Atsushi
Muraoka Mutsumi
Oliff & Berridg,e PLC
Schwartz Christopher P.
Tokai Rubber Industries Ltd.
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