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US 4,277,858 AGranted
Piece of furniture for sitting and lying
OwnerGunther Bohmeinventor
Life of this patent
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OwnerGunther Bohmeinventor
Estimating the term…
A piece of furniture for sitting and lying, more particularly a sickbed, having a horizontal surface divided into head, central and foot portions. A stationary frame extends at least the length of the central portion and the head and foot portions are pivotally mounted on the stationary frame about horizontal axes so they may be adjusted to horizontal and inclined positions by shifting the weight of the user's body and can be fixedly positioned by locking devices. A spring device, such as a torsion spring, equalizes the weight of the user on the head portion and the spring device is adjustable to control the initial stress applied to the head portion. The central portion is pivotally connected to the head portion through a connection that allows for end play and provides for leverage so that as the head portion is shifted to an inclined position, the central portion automatically moves to a proper reverse sloping position to accommodate sitting.
An article of furniture for sitting or lying comprising a surface adapted to support the body of a user, said surface having head, central and foot portions, a stationary frame extending over at least the length of said central portion, said head portion being pivotally mounted to said frame about a horizontal steering shaft and adjustable between horizontal and inclined positions by shifting the weight of the user's body, means for locking said head portion in a selected position, said head portion having extension portions extending toward said foot portion beyond said steering shaft, spring means operative about said steering shaft for equalizing the weight of said head portion, said central portion having longitudinal side members supported by supporting elements comprising pin and slot connections with said extension portions of said head portion, the slots of said pin and slot connections being upwardly curved.
Dependencies are inferred from the claim text.