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:
Mar. 19, 1991
Filed:
Jan. 31, 1990
Katsuhiro Goto, Komaki, JP;
Akiyoshi Ide, Inuyama, JP;
Kohichi Hasegawa, Mishima, JP;
Masaaki Takizawa, Mishima, JP;
Tokai Rubber Industries, Ltd., Aichi, JP;
Abstract
A shock absorber including a main housing body having a cylindrical portion and closure portions closing the open ends of the cylindrical portion, an inner cylindrical member disposed within the main body and cooperating therewith to define an inner cylinder chamber and an outer annular space, and a piston slidably received within the cylinder chamber, so as to divide the cylinder chamber into two fluid chambers filled with an electro-viscous fluid. The fluid chambers communicate with each other through communication passage which includes a portion formed within the annular space. An operating and a balancing rod are secured to the piston and extend slidably through the respective two closure portions of the main body. The shock absorber includes at least one pair of electrodes one of which consists of a portion of the cylindrical portion of the main body and the other of which consists of a portion of the inner cylindrical portion. The electrodes are disposed so as to define at least a portion of the communication passage, for applying a voltage to the fluid in that portion of the passage.