Crawler-type self-propelled hoist

Motor vehicles – Including one or more ski-like or runner members – With at least one surface-engaging propulsion element

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Details

180 926, 214 1H, 214 851, 254 2R, B25J 300

Patent

active

041066340

ABSTRACT:
A self-propelled steerable hoist for use in the placement of mobile homes on support blocks at a predetermined site; the hoist, in the general nature of a low bed vehicle, being a modification of, and for the same purpose as, the hoist disclosed in my U.S. Pat. No. 3,817,401, dated June 18, 1974, on SELF-PROPELLED DUAL-JACK HOIST.
In the present embodiment, the hoist includes a low-level but spaced-aboveground, elongated hoist beam centrally disposed between, and supported by, a pair of elongated but low-profile, selectively driven, ground-engaging, endless track units; there being power-actuated, hoist beam supporting and lifting mechanism between said track units and the hoist beam operative to elevate the latter from an initial lowered position lying between the track units to a raised position thereabove and in which said hoist beam engages and lifts a mobile home from beneath and for shifting about as necessary for proper placement on the support blocks.
A platform--fixed on and projecting rearwardly from the elongated hoist beam--provides the mounting base for operator-attended power and control devices of the hoist.

REFERENCES:
patent: 2931519 (1960-04-01), Beach
patent: 3666127 (1972-05-01), Guyaux
patent: 3796334 (1974-03-01), Torrey
patent: 3817401 (1974-06-01), Becker

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