Excavating – Ditch filler
Patent
1982-07-09
1983-11-08
Crowder, Clifford D.
Excavating
Ditch filler
403317, 403318, 403379, E02F 928
Patent
active
044134320
ABSTRACT:
An improved wedge and clamp locking system having an unidirectional interlock which can be disassembled to unlock the system rather than reversing the locking procedure by driving out the wedge.
REFERENCES:
patent: 2987838 (1961-06-01), Stratton
patent: 3572785 (1971-03-01), Larson
patent: 3722932 (1973-03-01), Dougall
patent: 4267653 (1981-05-01), Hahn et al.
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