Convertible grab bucket

Details Convertible grab bucket Convertible grab bucket

1976-02-09

1977-09-13

Crowder, Clifford D.

Excavating

Clamshell bucket

Spaced pivots

371175, 291483, 29401B, 294 70, 294 88, E02F 344, B66C 300

Patent

active

040473139

ABSTRACT:
This grab bucket comprises a pair of shells or scoops pivoted to the lower portion of a frame structure and operatively connected to a vertical hydraulic cylinder and piston actuator of which the piston rod is held against translation in relation to the frame structure, the upper end of the cylinder of said actuator carrying the pivot pins of links connected to the pair of shells or scoops. The frame structure comprises on the one hand an upper member rigid with the piston rod of said hydraulic actuator and on the other hand a frame structure body detachable from the upper member. The shells themselves are detachable from the base of the hydraulic cylinder to permit the operation of the grab bucket not only as a digging bucket but also as a rehandling bucket after disassembling the frame structure body and connecting the links to the upper member.

REFERENCES:
patent: 3258864 (1966-07-01), Beyers
patent: 3308628 (1967-03-01), Nichols
patent: 3451150 (1969-06-01), Pitaral
patent: 3606435 (1971-09-01), Weber
patent: 3881263 (1975-05-01), Coeurderoy
John Deere Operator's Manual (OM-C39-1156); p. 20.

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