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:
Feb. 18, 1986
Filed:
Oct. 28, 1983
Keizo Konishi, Komaki, JP;
Tokai Rubber Industries, Ltd., Komaki, JP;
Abstract
A vibration damper comprising an elastic block having a cavity open at its bottom end, a support integrally united with the elastic block, a partition of a rigid material disposed adjacent the bottom end of the elastic block so as to close the cavity to form an operating chamber on one side of the partition, a diaphragm disposed on the other side of the partition and cooperating with the same to define an equilibrium chamber, and an orifice for effecting communications between the operating and equilibrium chambers which are filled with incompressible fluid. At least a portion of the diaphragm is formed of a thin layer of flexible material so that the equilibrium chamber is variable in its volume. The rigid partition undergoes substantially no deformation upon input of a vibrational energy into the operating chamber. A ratio of a dynamic spring rate to a static spring rate of the damper is not greater than 2.1 for high-frequency vibrations of higher than 50 Hz.