Excavating – Clamshell bucket – Common pivot
Patent
1987-08-27
1989-08-22
Burr, Edgar S.
Excavating
Clamshell bucket
Common pivot
37118R, 37DIG12, 414704, B66C 302, E02F 300, E02F 340
Patent
active
048583464
ABSTRACT:
Covers are mounted so as to cooperatively close and seal the mouth or opening into conventional backhoe and clam-shell excavating buckets with the covers being positioned or positionable so as to engage the buckets after the buckets have been operated or manipulated to excavate earthen material or debris to thoroughly enclose such materials within the buckets until such time as the material is deposited into an appropriate receptacle or deposit site.
REFERENCES:
patent: 2263472 (1941-11-01), Reichenbach
patent: 3003265 (1961-10-01), Lutjens
patent: 3460691 (1969-08-01), Wieger et al.
patent: 3477602 (1969-11-01), Peterson
patent: 3737059 (1973-06-01), Peterson et al.
patent: 3807589 (1974-04-01), Shovick
patent: 3973764 (1976-08-01), Holzer, Jr.
patent: 4266908 (1981-05-01), Leiker
Burr Edgar S.
Cohen Moshe L.
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