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:
Jan. 06, 2004
Filed:
Oct. 16, 2002
Masaaki Hamada, Konan, JP;
Tatsuya Suzuki, Kasugai, JP;
Tokai Rubber Industries, Ltd., Komaki, JP;
Abstract
Disclosed is a fluid-filled cylindrical vibration damping device including an elastic body interposed between an inner and outer sleeves for elastically connecting these sleeves with each other. A plurality of fluid chambers filled with a non-compressible fluid are partially defined by the elastic body so that a pressure of the fluid in the plurality of fluid chambers vary upon application of a vibrational load to the vibration damping device. A first orifice passage permitting a fluid communication between the fluid chambers is at least partially defined by an elastic member adapted to be subjected to shear deformation due to a fluid pressure acting on the first orifice passage so that a cross sectional area of the first orifice passage increases according to an increase of the pressure of the fluid acting on the first orifice passage owing to the shear deformation of the elastic member.