Ringfeder Gmbh

Hermann Haarkotter

Horst-Dieter Schafer

Paul Loosen

Friedhelm Detzner

Gino Marsella

Dieter Muhlhahn

Manfred Witzel

Dieter Simons

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.

Synthetic-resin compression spring

An inner annular member of the arrangement surrounds the shaft and has an outer circumferential face two sections of which conically taper in mutually opposite directions. The inner annular member is also provided with a radially outward extending collar intermediate these sections. A pair of outer annular members each surround one of the sections with clearance and have an exterior cylindrical surface and an interior surface having a taper opposite to that of the respective section to form therewith a wedge-shaped annular clearance. The outer annular members abut from opposite axial ends against the collar. Tension members are received in the respective clearance and are drawn by both or the like inwardly of the clearance so as to force the inner member against the shaft and to the outer members against the surrounding hub, thus coupling the hub and the shaft for joint movement.

Shaft coupled to surrounding hub

Growing community of inventors

Krefeld, Germany

Hermann Haarkotter