US 5,105,486 AGranted

Adjustable bed

AssigneeJoerns Healthcare Inc.

InventorWarren J. Peterson

Life of this patent

Estimating the term…

Loading patent…

Abstract

An adjustable care bed includes a base frame which supports a mattress frame. The mattress frame includes a head section, a seat or intermediate section and a foot or leg section all of which are pivotally interconnected. A first link and positioner subassembly interconnects the head section with the seat section. A second link and positioner subassembly interconnects the seat section with the leg or foot section. Each link and positioner subassembly includes a link fixed to one of the sections and having a free end. A bracket is fixed to the intermediate section. An elongated rod has an end pivoted to the bracket and a free end which extends through a lock housing. The lock housing is pivoted to the free end of the fixed link. A lock mechanism selectively locks or positions the rod with respect to the lock housing. The bed further includes an extendable caster subassembly, and a hi/low mechanism for raising the mattress frame with respect to the base frame, and a leg lift mechanism.

Claims22

Dependent claims

An adjustable bed, said bed comprising:

a base frame defining a head end and a foot end, said frame including a pair of legs at the head end and a pair of legs at the foot end;
a mattress frame including a head section and a lower section pivoted to said head section;
mounting means on the base frame for mounting the mattress frame to said base frame and for permitting the head section to tilt with respect to said base frame and said lower section;
and
positioner means interconnecting said head section and said lower section for positioning and locking the angular relationship of said sections, said positioner means including:
a first link having an end fixed to said head section and a free end;
a bracket fixed to said lower section;
an elongated rod having an end pivoted to said bracket and a free end;
lock means pivoted to said free end of said first link for locking said rod free end with respect to said first link and hence said head section with respect to said lower section;
and
a caster subassembly at an end of said base frame, said subassembly including a caster wheel and cam means for lowering said caster wheel into engagement with a floor, and wherein said cam means comprises:
an elongated shaft rotatably mounted on said base frame;
a foot pedal fixed to said shaft;
and
a cam fixed to said shaft and positioned to engage said caster wheel.

12 more elements

An adjustable bed, said bed comprising:

a base frame defining a head end and a foot end, said frame including a pair of legs at the head end and a pair of legs at the foot end;
a mattress frame including a head section and a lower section pivoted to said head section;
mounting means on the base frame for mounting the mattress frame to said base frame and for permitting the head section to tilt with respect to said base frame and said lower section;
and
positioner means interconnecting said head section and said lower section for positioning and locking the angular relationship of said sections, said positioner means including:
a first link having an end fixed to said head section and a free end;
a bracket fixed to said lower section;
an elongated rod having an end pivoted to said bracket and a free end;
lock means pivoted to said free end of said first link for locking said rod free end with respect to said first link and hence said head section with respect to said lower section, and wherein said mounting means comprises:
a first support link having a lower end connected to said base frame and an upper end pivoted to said head section;
and
a leg lift means pivoted to said base frame and said lower section of said mattress frame for permitting said mattress frame to be tilted about the pivot of said first support link.

9 more elements

An adjustable bed, comprising:

a base frame;
a mattress frame having a head section and a foot section;
a support link having a lower end connected to the base frame and an upper end pivoted to the head section of said mattress frame;
and
leg lift means between the base frame and the mattress frame for permitting said mattress frame to be tilted about the upper end of said support link, said leg lift means comprising:
an elongated tubular member having ends;
a pair of telescoping links, each adjacent one of said ends of said member, said links each including an outer tube and a lift shaft telescopingly disposed within said tube, said tubes and said shafts being pivoted to one of said mattress frame and said base frame;
lift shaft lock means within said elongated tubular member for engaging said lift shafts for simultaneously locking the positions of said lift shafts with respect to said outer tube and said elongated tubular member and for simultaneously releasing said lift shafts so that the effective length of said links may be adjusted.

5 more elements

Dependencies are inferred from the claim text.