Bed bottom

Claim 2

A bed bottom which is divided into a longitudinal middle section and two longitudinal side sections, e.g. for carrying a mattress with a person lying on it, the middle section being mounted for pivoting about a longitudinal axis at the centre of the middle section and each of the side sections being articulatedly connected along its inner side edge to the middle section for pivoting about a longitudinal axis at the side edge of the middle section, so that the middle section can be set at different angular positions with the aid of a control means simultaneously as the side sections accomodate this movement by their being pivotally joined to a bed frame, characterized in that each side section is connected at its outer side edge portion to one end of each of a number of links distributed along the outer side edge of the respective side section, and that the other end of each of the links is pivotably connected to the bed frame, the arrangement being such that when the middle section and the side sections are in one and the same horizontal position, the links extend slopingly upwards and outwards to their articulated connections at the outer side edge portions of the side sections.

Claim 3

A bed comprising a horizontal frame; a bed bottom disposed above the frame, the bed bottom including a longitudinal middle section having a planar portion for supporting a person's body and two longitudinal side sections, each having a planar portion; means mounting the middle section for pivotal movement relative to the frame about a longitudinal axis at the center of the middle section; means pivotally connecting the inner side edge of the planar portion of each side section to an edge of the planar portion of the center section for pivotal movement about a longitudinal axis parallel to the axis of the side section; a plurality of links arranged along the longitudinal dimension of each side section, each link having an upper end pivotally connected to the outer side edge portion of the respective side section for pivotal movement about a longitudinal axis parallel to said axis of said center section and each link having a lower end pivotally connected to the frame for pivotal movement about a longitudinal axis parallel to said axis of said center section, said links being arranged to slope upwardly and outwardly when said middle section and said side sections are in one and the same horizontal position and said links permitting said side sections to tilt relative to said horizontal plane when said center section pivots about its longitudinal center axis.

Claim 4

A bed comprising a horizontal frame; a bed bottom disposed above the frame, the bed bottom including a longitudinal middle section having a planar portion for supporting a person's body and two longitudinal side sections, each having a planar portion; means mounting the middle section for pivotal movement relative to the frame about a longitudinal axis at the center of the middle section; means pivotally connecting the inner side edge of the planar portion of each side section to an edge of the planar portion of the center section for pivotal movement about a longitudinal axis parallel to the axis of the side section; a plurality of links arranged along the longitudinal dimension of each side section, each link having an upper end pivotally connected to the outer side edge portion of the respective side section for pivotal movement about a longitudinal axis parallel to said axis of said center section and each link having a lower end pivotally connected to the frame for pivotal movement about a longitudinal axis parallel to said axis of said center section, said links being arranged to slope upwardly and outwardly when said middle section and said side sections are in one and the same horizontal position and said links permitting said side sections to tilt relative to said horizontal plane when said center section pivots about its longitudinal center axis.