Resilient, ratcheted wedge and spool retaining structure for an

Excavating – Digging edge – Tooth or adaptor

Patent

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Details

37455, E02F 928

Patent

active

053317548

ABSTRACT:
An elongated resilient wedge and spool retaining structure longitudinally extends through generally aligned openings formed in a replaceable excavating tooth point, and an adapter nose portion received in a tapered socket within the tooth point, to captively hold the tooth point in place on the adapter nose. The retaining structure includes a tapered spool member having an enlarged side portion received in the tooth socket and blocking removal of the spool member, and a tapered wedge member driven into the tooth and adapter openings to a position in which longitudinally extending series of ratchet teeth on facing sides of the spool and wedge members are intermeshed and releasably lock the structure in place within the tooth and adapter assembly. A recess formed in a nontoothed side of the wedge member receives a locking member that forcibly bears against a surface portion of the adapter nose opening and is movable into the recess in a manner compressing a plurality of elastomeric members therein. The elastomeric members are maintained in compression and exert resilient reactive forces that simultaneously act to draw the adapter nose into the tooth socket and forcibly hold the spool and wedge member ratchet teeth in intermeshed engagement with one another. A removal tool may be driven into a longitudinal passage extending through the retaining structure, centrally through the intermeshed series of ratchet teeth, to laterally separate the wedge member from the spool member and thereby facilitate the removal of the installed wedge member.

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