Patent ID: 6286821
Filing Date: 2001-09-11
Classification: B60G,F16F

Abstract:
A method of making pivot bushings comprising:providing a length of rigid plastic insert material that in transverse cross section has a shape that is arcuate about a central axis and that is capable of functioning as a shear plate;moving the insert material lengthwise through an extrusion die;at the die, creating an annular elastomeric body which is substantially concentric with the central axis and within which the insert material is embedded by extruding elastomeric material in covering relation to the insert material as the insert material moves through the die and allowing the elastomeric material to cure onto the rigid plastic insert material so that the rigid plastic insert material becomes a shear plate embedded within the elastomeric body;and then transversely cutting the annular elastomeric body, including cutting through the insert material, at locations along the length of the insert material, thereby creating individual bushings.