Traversing hoists – Having boom shiftable vertically along a linear path – Length of hoisting cable between boom and load decreases...
Patent
1990-07-10
1991-12-17
Peters, Jr., Joseph F.
Traversing hoists
Having boom shiftable vertically along a linear path
Length of hoisting cable between boom and load decreases...
414921, 5 81B, 254374, 212209, B66C 1700, B66C 1900, B66D 130, A61G 708
Patent
active
050728407
ABSTRACT:
A medical bed apparatus is provided that has a body frame, a hoisting assembly and a hammock supported from the hoisting assembly by hanging strings. The body frame is positioned over a hospital bed or the like and a person is placed on the hammock. A pair of drums are provided in the hoisting assembly so that the hanging strings may be hoisted or wound on the drums in a first direction to lift the hammock. The drums are preferably cone-shaped such that the head portion of the hammock is initially lifted at a rate that is faster than the rate the foot portion of the hammock is lifted. Once the person's upper torso is substantially upright, the lifting rate for the head and foot portion of the hammock are substantially equal. Once the person is lifted, the hoisting assembly is horizontally movable in both the x and y directions so that the person may be maneuvered away from the bed and positioned in an upright sitting position over a urinal, bath or chair. The lifting and maneuvering procedure may be reversed so that the person is repositioned over the bed and returned to a substantially horizontal position by reversing the hoist direction of the drums. The hanging strings are maintained in a substantially vertical orientation by moving the drum hoisting the head portion and the drum hoisting the foot portion of the hammock toward each other as the person is lifted and moving the drums away from each other as the person is lowered.
REFERENCES:
patent: 2420072 (1947-05-01), Foote
patent: 4639955 (1987-02-01), Carminati et al.
Asakawa Yoshio
Suezaki Yasunaga
Lee Kenneth
Peters Jr. Joseph F.
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