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. 28, 1987
Filed:
Aug. 07, 1985
Dieter Muhlhahn, Langenfeld, DE;
Gino Marsella, Neuss, DE;
Friedhelm Detzner, Duisburg, DE;
Dieter Simons, Krefeld, DE;
Horst-Dieter Schafer, Willich, DE;
Hermann Haarkotter, Krefeld, DE;
Ringfeder GmbH, Krefeld, DE;
Abstract
A spring according to this invention has a core of an elastically deformable but substantially incompressible material and having two axially spaced end surfaces operatively engageable with objects to be relatively resiliently mounted. Thus when the two bodies engaging the end surfaces move toward each other the core swells radially. An annular belt formed of an elastic synthetic resin snugly surrounds the core between its ends. The belt can be lapped or can be a single unitary ring. It may also be formed of a plurality of independent layers having ends provided with a heat-shrunk clip for securing the ends together. To soften the initial spring characteristic the belt is corrugated and has peaks engaging the core and valleys normally not engaging the core. The corrugations may run longitudinally or transversely.