Material or article handling – Apparatus for moving material to a position in the erection... – Flat wall or ceiling member manipulating means
Patent
1992-09-11
1994-06-21
Huppert, Michael S.
Material or article handling
Apparatus for moving material to a position in the erection...
Flat wall or ceiling member manipulating means
52749, 52DIG1, 212257, E04G 2114
Patent
active
053224043
ABSTRACT:
A lifting device for pivotally raising a prefabricated wall section from a substantially horizontal position to a vertical position on the floor of a building under construction comprising a trolley having a frame, a pair of spaced rollers mounted for rotation thereon and defining an opening for receipt and passage therethrough of an elongated beam with the rollers in frictional, gripping engagement with the beam, motors mounted on the frames in operative driving engagement with the rollers, and a hinge pivotally mounted on the frame for attachment to the ultimate upper end portion of a prefabricated wall section to permit pivotal movement of the hinge about its point of attachment to the frame during wall-lifting operations. The trolley travels along the beam as the beam pivots on the floor of the building from vertical to diagonal position during corresponding pivotal movement of the prefabricated wall from horizontal to vertical position.
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patent: 5163799 (1992-11-01), Lynn
Huppert Michael S.
Keller Bobby E.
Morse Gregory A.
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