B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
B66C 23/00 (2006.01) B66C 23/72 (2006.01) B66C 23/76 (2006.01) B66F 11/04 (2006.01)
Patent
CA 2317361
There is disclosed a load lifting device, where the device includes a boom which pivots in order to lift or reposition a load. One form of the device includes a boom pivotable about a horizontal axis for lifting the load, a first end of which extends to one side of the horizontal axis to lift the load. The boom comprises a second end extending from the horizontal axis, a linearly shiftable counterweight, and a link which connects the second end of the boom to the counterweight to shift the counterweight in a first direction when the boom is pivoted to lift a load, and in a second direction when the boom is pivoted to lower a load. The device provides a highly efficient apparatus.
Backer Robert D.
Griffin Michael D.
Neubauer Mark G.
Zhou Michael Z.
Grove U.s. L.l.c.
Jlg Industries Inc.
Mcfadden Fincham
LandOfFree
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