Patent ID: 7603799
Filing Date: 2009-10-20
Classification: E02F,Y10T

Abstract:
1. A connector pin assembly for use in captively retaining on a nose portion of an excavation support member an excavation wear member rearwardly telescoped onto the nose portion and having an opposing pair of walls respectively having first and second connector openings extending therethrough in general alignment with a connector opening extending through the nose portion, the wear member, in response to internal surface wear thereon, being rearwardly shiftable from an initially tightened position on the support member, said connector pin assembly comprising: a connector pin structure longitudinally extending along an axis and being positionable in the wear member and support member connector openings in a manner such that first and second outer end portions of said connector pin structure respectively extend into the first and second wear member connector openings and block forward removal of the wear member from the support member, said first end portion of said connector pin structure having formed thereon a laterally outwardly projecting cam member with an eccentrically curved outer side surface which, with said first end portion of said connector pin structure disposed within said first wear member connector opening, is oriented to face the interior surface of said first wear member connector opening; and locking structure associated with said connector pin structure and cooperable with the support member, for selectively (1) permitting said first end portion, and thus said cam member, to be rotated relative to the wear member between first and second rotational orientations in which said outer side surface of said cam member extends different maximum distances rearwardly beyond said axis, and (2) locking said first end portion in either of said first and second rotational orientations,