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:
Oct. 18, 1994
Filed:
Jan. 07, 1992
Ulrich Freudenberg, Hirschberg, DE;
Tillman Freudenberg, Weinheim, DE;
Firma Carl Freudenberg, Weinheim, DE;
Abstract
A hydraulically damped bearing for a piston engine has a liquid-filled working chamber that communicates with the compensating chamber by means of a duct-type conduit. The effective length of the conduit can be shortened by arbitrarily actuating a relief valve, which is arranged between the outlets of the conduit that communicate with the working and compensating chambers. The respective distances between the valve and the outlets are dimensioned so that the liquid volume contained in the linear section defining the effective length L of the conduit vibrates essentially in phase with the bearing member when vibrations of a frequency corresponding to the idling speed are introduced.