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. 07, 1992
Filed:
Nov. 15, 1990
Firma Carl Freudenberg, Weinheim/Bergstr, DE;
Abstract
A hydraulically damped engine mount comprises liquid-filled working and equalization chambers 1, 2 which are separated by a resilient partition wall 3 and connected by a damping opening 4. The axially opposing working chamber 1 and the equalization chamber 2 are bounded by essentially non-deformable pistons, the latter being connected to a centrally disposed, annular fitting by means of an liquid-impermeable and elastically deformable annular body. These pistons are rigidly joined to one another by means of a connecting rod 7. The piston 9 bounding the equalization chamber 2 has a piston surface which is at least as large as the piston surface of the partition wall 3. The annular body corresponding to this piston is a first rolling membrane 6 which is curved in the axial direction toward the outside and the partition wall 3 is a second rolling membrane which is curved in the axial direction to extend into the working chamber 1. At its inside, this second rolling membrane is affixed liquid-tight to the connecting rod 7.