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:
Apr. 30, 2002
Filed:
Aug. 07, 2000
Yorishige Shimizu, Iwakura, JP;
Abstract
Fluid-filled vibration damping device having a primary fluid chamber partially defined by an elastic body elastically connecting two spaced-apart mounting members and located on one of opposite sides of a partition structure having an orifice passage, an auxiliary fluid chamber partially defined by a flexible diaphragm and located on the other side of the partition structure, wherein the partition structure comprising an orifice including a pair of metallic annular components by pressing and are superposed on each other in an axial direction thereof so as to define therebetween the orifice passage, the pair of annular components being fixed together such that an inner peripheral portion of one annular components is bent to form a calking part which is calked to an inner peripheral portion of the other annular member over an entire inner circumference of the orifice member, and the flexible rubber plate being bonded at an peripheral portion thereof to a surface of the calking part in a process of vulcanization of a rubber material to form said flexible rubber plate.