Excavating – Ditch filler
Patent
1984-02-08
1985-03-19
Burr, Edgar S.
Excavating
Ditch filler
24580, 24612, 403 13, 403155, 403324, 403326, 411353, 411517, 411530, E02F 928
Patent
active
045050589
ABSTRACT:
An excavating tooth has a blade of substantially constant thickness with a transverse shoulder at its inner end and a longitudinal gusset. The tooth terminates in a reduced diameter spindle and a button with a shoulder on its forward face. The adapter has a recess to receive the tooth, the forward end of the adapter receiving the thrust of the tooth because the transverse shoulder bears thereagainst. A top to bottom opening in the adapter intersects the recess at the spindle. A pair of grooves are formed on the outside edges of the opening with projections extending inward from the outer walls of the grooves. A retainer is formed of round cross-section wire and slides in the grooves between locked and unlocked positions, the diameter of the wire being less than the width of the grooves. The retainer is symmetrical about its longitudinal center line, having a slightly upward bowed top connector and legs depending from either end of the connector. Each leg has, in order, a reverse bend joining the leg to the connector, an upper straight section, an outward-downward slanted section, a lower straight section and a lower terminal.
REFERENCES:
patent: 3144909 (1964-08-01), Hart et al.
patent: 3826024 (1974-07-01), Petersen
patent: 4050172 (1977-09-01), Petersen
patent: 4367602 (1983-01-01), Petersen
Burr Edgar S.
Caplan Julian
Cohen Moshe I.
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