Automatic adjustable spreader bar

Details Automatic adjustable spreader bar Automatic adjustable spreader bar

2008-07-15

2008-07-15

Kramer, Dean J (Department: 3652)

Handling: hand and hoist-line implements

Spacing hoist bar or frame

Load supporting units

C294S081200, C294S081530, C294S081560

Reexamination Certificate

active

11431491

ABSTRACT:
A device for lifting oversized pieces of material. The device includes a spreader bar capable of attaching to a lifting vehicle. At least two cross members are attached to the spreader bar along with at least one cross-member power source. The at least one cross-member power source is connected to at least one drive mechanism which in turn is connected to at least one of the at least two cross members. A load-pick power source is attached to each of the at least two cross members and well as to at least one load-pick drive mechanism. The at least one load-pick drive mechanism is connected to each of the at least two load pick points, and the cross-member and the load-pick power sources are each electrically connected to an operating or control panel in a cab of the lifting vehicle.

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patent: 5560663 (1996-10-01), Hara et al.
patent: 6129396 (2000-10-01), Asada et al.

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