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. 05, 1992
Filed:
Dec. 21, 1989
Applicant:
Inventors:
Franz J Wolf, Bad Soden-Salmunster, DE;
Hubert Pletsch, Bad Soden-Salmunster, DE;
Assignee:
WOCO Franz-Josef Wolf & Co., Bad Soden-Salmunster, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; F16F / ;
U.S. Cl.
CPC ...
428178 ; 428188 ; 4283135 ; 4283142 ; 4283148 ; 428492 ; 264166 ; 264167 ; 2642091 ; 264319 ; 2643281 ; 181208 ; 248615 ; 248634 ; 248638 ; 267140 ; 267141 ; 267153 ; 267292 ;
Abstract
In order to obtain a particularly soft spring characteristic the rubber spring element consisting of relatively hard material having good mechanical strength is traversed by cavities and hollow channels, which intersect said cavities, in such a manner that the area of the inside cross-section of the hollow channels amounts to at least 25% of the area of the largest inside cross-section of the nearest cavity traversed by this hollow channel, while the hollow channels may directly intersect in the rubber matrix.