Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1989-07-18
1990-11-20
Reger, Duane A.
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
267218, F16F 9346
Patent
active
049712993
ABSTRACT:
An ERF filled engine mount features an annular member which is disposed within inner and outer coaxial tubular members. This member is formed with two short channels and one long one along its outer periphery. The short channels are formed so as to be essentially diametrically opposed sides of the annular member and to extend about 1/4 of the external perimeter thereof. The longer channel is axially offset from the two shorter ones and arranged to extend about 3/4 of the perimeter. The outer tubular member closes the channels and defines a pair of primary orifice passages and a single secondary one. An elastomeric member which operatively interconnects the inner and outer tubular members is formed to define a main chamber and an auxiliary one. Apertures formed in the ends of the passages permit the main and auxiliary chambers to communicate via the orifice passages. Electrode plates which are disposed in the channels are staggered around the periphery of the annular member in a manner wherein the impresssion of a voltage on one does not cause the ERF in another orifice passage to undergo an increase in voltage.
REFERENCES:
patent: 4458888 (1984-07-01), Wolf et al.
Nissan Motor Co,. Ltd.
Reger Duane A.
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