Universal hoist assembly

Handling: hand and hoist-line implements – Contact lens applicator

Patent

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Details

294 89, 403164, B66C 166

Patent

active

058235884

ABSTRACT:
A universal hoist assembly for lifting large, heavy, structures. The assembly basically includes a housing which captures the base of a lift swivel while permitting free rotation of the base. An upright extension of the base extends out of the housing and has a transverse aperture through which a shackle is fastened. This arrangement permits the shackle to pivot and the extension to freely rotate, so that a lift can be conducted with structures of widely varying configurations without danger from sideloads on the lift assembly. Preferably, the base is either disk-shaped and housed in a corresponding recess for rotation in a plane or has a spherical exterior shape in a corresponding recess to permit rotation plus pivoting in any direction. The assembly may be fastened to a structure by a single central threaded bolt fastened to the housing and threaded into the structure or extending through a structure wall to a nut or by several spaced bolts. Two housings may be secured to a structure in a spaced relationship with a single shaft extending through apertures at the housings and a shackle on the shaft intermediate the housings.

REFERENCES:
patent: 2812971 (1957-11-01), Teutsch
patent: 3888190 (1975-06-01), Bigge
patent: 4074519 (1978-02-01), Garrett
patent: 4699410 (1987-10-01), Seidel
patent: 5248176 (1993-09-01), Fredriksson
patent: 5381650 (1995-01-01), Garrett

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