Beds – Sofa bed – Reverting back
Patent
1989-07-05
1991-06-04
Trettel, Michael F.
Beds
Sofa bed
Reverting back
5 13, 5109, A61G 706
Patent
active
050201700
ABSTRACT:
A bed for immobile patients includes a height-adjustable bed frame mounted on a sub-structure provided with at least two spaced apart and connected with one another pivotable sectors driven by a flexible element passing through a plurality of rollers and fixed to extremeties of at least one sector and with a rail having a form of an arcuate of U-shaped depression running along at least one side of each sector and receiving guiding elements rotatably mounted on stands juxtaposed with the sectors.
REFERENCES:
patent: 949655 (1910-02-01), May
patent: 1185054 (1916-05-01), Buckley
patent: 2520563 (1950-08-01), Preston
patent: 3302218 (1967-02-01), Stryker
patent: 3587482 (1971-06-01), Wieland
patent: 3590812 (1971-07-01), Larson
patent: 3737924 (1973-06-01), Davis
patent: 4852193 (1989-08-01), Alsip et al.
Dubno Herbert
Trettel Michael F.
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