The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 1992
Filed:
Jan. 21, 1992
Toshiyuki Tabata, Sagamihara, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An insulating bushing through which an engine is supported on a vehicle body. The insulating bushing is comprised of a support elastomeric member tightly interposed between inner and outer cylinders. One of the inner and outer cylinders is connected to one of the engine and the vehicle body while the other is connected to the other of the engine and the vehicle body. The support elastomeric member is formed with main and auxiliary fluid chambers which are separate from each other in the peripheral direction. The main and auxiliary fluid chambers are in communication with each other through an orifice passage formed along the inner periphery of the outer cylinder. Additionally, a flange plate is fixedly disposed within main fluid chamber to divide the fluid chamber into two chambers located side by side in the diametrical direction. The flange plate is located in such a manner that the periphery thereof is separate from the inner side wall surface of the main fluid chamber to form therebetween a clearance through which the two chambers are in communication with each other. The orifice passage constitutes a first dynamic damper system for damping low frequency and large amplitude vibrations while the clearance around the periphery of the flange plate constitutes a second dynamic damper system for damping high frequency and small amplitude vibrations.