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:
May. 20, 1986
Filed:
Jun. 28, 1984
Manfred Hofmann, Hunfelden, DE;
Karl-Heinz Klockner, Niederwerth, DE;
Metzeler Kautschuk GmbH, Munich, DE;
Abstract
A decoupling device for engine mounts having upper and lower liquid chambers containing hydraulic fluid for damping vibrations, includes a diaphragm liquid-tightly fastened to an upper region of the upper liquid chamber defining a diaphragm chamber divided-off from the upper liquid chamber, the diaphragm including a circular rubber body and a vibration-cancelling mass in the form of a central, circular, metallic disc adhering to the circular rubber body, the circular rubber body having upper and lower surfaces, each of the surfaces having two concentric, conical, circular slots formed therein being inclined toward each other as seen in direction from the horizontal central plane of the circular rubber body toward the surfaces thereof, and the slots being extended to the vicinity of the horizontal central plane of the circular rubber body.