| US 7,603,799 B2 | ||
| Cammed connector pin assembly and associated excavation apparatus | ||
| Patrick S. Campomanes, Coppell, Tex. (US) | ||
| Assigned to Hensley Industries, Inc., Dallas, Tex. (US) | ||
| Filed on May 11, 2006, as Appl. No. 11/432,682. | ||
| Prior Publication US 2007/0261278 A1, Nov. 15, 2007 | ||
| Int. Cl. E02F 9/28 (2006.01) | ||
| U.S. Cl. 37—456 [37/459; 403/22] | 18 Claims |
| 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,
whereby said cam member may be rotationally adjusted to rearwardly engage the wear member in either of its initial and rearwardly
shifted tightened positions and prevent its forward movement therefrom relative to the support member.
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