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:
Aug. 15, 2000
Filed:
Oct. 28, 1998
Jyoji Tsutsumida, Komaki, JP;
Abstract
A fluid-filled cylindrical elastic mount comprising: a center shaft member; an intermediate sleeve disposed radially outwardly of the center shaft member; an elastic body interposed between and connecting the center shaft member and the intermediate sleeve; and an outer sleeve member disposed on the intermediate sleeve; an orifice member interposed between the intermediate sleeve and the outer sleeve member to divide a first pocket formed in the elastic body into a pressure-receiving chamber and a first equilibrium chamber partially defined by a first flexible diaphragm, to close a second and third pocket diametrically opposite to the first pocket, to provide a second equilibrium chamber having a spring stiffness smaller than that of the first equilibrium chamber and a third equilibrium chamber having a spring stiffness larger than that of the first equilibrium chamber, and to partially define a first, second and third orifice passages for communication of the respective first, second and third equilibrium chambers with the pressure-receiving chamber, and wherein the elastic body has an axial void to provide a second and third flexible diaphragm which partially define the respective second and third equilibrium chambers, and the first orifice passage has a ratio of a cross sectional area to a circumferential length higher than that of the second orifice passage, and lower than that of the third orifice passage.