Beds – Sofa bed – Reverting back
Patent
1979-08-31
1981-06-23
Nunberg, Casmir A.
Beds
Sofa bed
Reverting back
5 66, 128 33, A62G 710
Patent
active
042741670
ABSTRACT:
A substantially planar platform having a mattress supported thereon is pivotally attached toward one end to a framework. A bed support structure has a pair of arcuate surfaces which engage the lower face of the platform. The arcuate surfaces are attached to a pair of channel bars which are supported on wedge-shaped elements. The channel bars are pivoted on a common axis and the wedge-shaped elements are moved forwardly by a screw and follower mechanism thereby pivoting the channel bars to move the arcuate supports upwardly against the bottom of the platform. This pivots the platform upwardly. The pivot axis of the channel comprises a tube mounted on an eccentric shaft. The eccentric shaft is rotated under power thereby causing vibration of the entire mechanism resulting in oscillatory motion to relieve stress, strain and tension in the user and aid in the treatment of back and circulatory ailments.
REFERENCES:
patent: 2693796 (1954-11-01), Warner
patent: 3015330 (1962-01-01), Linstrom
patent: 3277736 (1966-10-01), Goodman
patent: 3609779 (1971-10-01), Oja et al.
patent: 3752154 (1973-08-01), Clark
patent: 3997926 (1976-12-01), England
Jacobson Harvey B.
Nunberg Casmir A.
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