Attachment for loading and unloading constructional material

Details Attachment for loading and unloading constructional material Attachment for loading and unloading constructional material

1991-06-25

1992-11-17

Huppert, Michael S.

Material or article handling

Vertically swinging load support

Grab

294 8641, 294 88, 294902, 294 991, 414735, B66C 110

Patent

active

051638045

ABSTRACT:
An attachment for loading and unloading a constructional material capable of substantially improving working efficiency and accomplishing labor saving. A pair of holding arm are pivotally mounted in a manner to be laterally spaced from each other on an arm mounting bracket arranged on a lower surface of a bracket mounted on an arm of a hydraulic shovel, between which a hydraulic cylinder is arranged, resulting in a constructional material being supported between or on the holding arms. Thus, force required for supporting the constructional material can be finely controlled as desired to prevent the material from being broken or damaged due to the application of excessive force thereto.

REFERENCES:
patent: 2725996 (1955-12-01), Britton
patent: 3669293 (1972-06-01), Bryan et al.
patent: 4002245 (1977-01-01), Mink
patent: 4005894 (1977-02-01), Tucek
patent: 4260323 (1981-04-01), Muntjanoff
patent: 4576406 (1986-03-01), Johnson et al.
patent: 4707013 (1987-11-01), Vranish et al.

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