Lifting device, particularly for beds

Details Lifting device, particularly for beds Lifting device, particularly for beds

1991-04-15

1991-10-15

Trettel, Michael F.

Beds

Window, floor, ceiling, or room to room

5 11, 254 92, A47C 1904, B66F 714

Patent

active

050561707

ABSTRACT:
The lifting device comprises essentially a flat, rigid frame suitable for wall fixing, formed by two longitudinally slotted vertical guide posts connected together at top and bottom by cross-struts. Within each guide post a screw-shaft spindle is set on bearings, and the two spindles can be driven in the same sense of rotation by a common motor. Two nuts placed above each other a certain distance apart run on each screw-shaft spindle and are guided along the slot in their respective post. A cantilever is attached to the pair of nuts in each guide post and projects from the plane of the frame. When a bed or other load is in a raised position, the space below it is left completely free and is freely accessible.

REFERENCES:
patent: 1170929 (1916-02-01), Nylander
patent: 1497046 (1924-06-01), Trusler
patent: 2655223 (1953-10-01), Villars
patent: 3028606 (1962-04-01), Boutet
patent: 3512314 (1970-05-01), George et al.
patent: 3722627 (1973-03-01), Fricke
patent: 4837877 (1989-06-01), Hamada et al.

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