Resilient flex pin apparatus for excavating tooth point and adap

Details Resilient flex pin apparatus for excavating tooth point and adap Resilient flex pin apparatus for excavating tooth point and adap

1987-07-30

1989-04-25

Burr, Edgar S.

Excavating

Ditch filler

403225, 403291, 411514, E02F 928

Patent

active

048234877

ABSTRACT:
A flex pin includes an elongated rigid locking member having an elongated lateral recess formed therein. An elongated rigid wedge member is intersecured to the locking member by means of a spaced series of elastomeric segments positioned in the recess, and is laterally movable into the recess against the resilient resistance of the elastomeric segments. The wedge member has a longitudinally intermediate portion which is engageable by a forward side surface of the adapter nose opening and is interlockable therewith, and a pair of rearwardly swept outer end portions which underlie opposite end surfaces of the locking member recess and are engageable therewith as the flex pin is being driven into its installed position to prevent shearing of the elastomeric segments. When the wedge member is laterally driven into the locking member recess, by relative movement between the tooth point and adapter, a pair of stop projections formed on the rear recess side surface engage the longitudinally intermediate wedge member portion and stop the inward wedge member travel before the outer end portions thereof engage the rear side surface of the recess, thereby essentially eliminating rigid bending loads on the wedge member.

REFERENCES:
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patent: 3685178 (1972-08-01), Ratkowski
patent: 4077729 (1978-03-01), Schwappach
patent: 4192089 (1980-03-01), Schwappach
patent: 4261619 (1981-04-01), Howe et al.
patent: 4446638 (1984-05-01), Novotny et al.
patent: 4663867 (1987-05-01), Hahn et al.

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