Beds – Invalid bed or surgical support – Sectional user supporting surface
Patent
1990-06-25
1992-08-11
Grosz, Alexander
Beds
Invalid bed or surgical support
Sectional user supporting surface
5616, 5610, 5611, A61G 7015, A61G 7018, A61G 7005
Patent
active
051367424
ABSTRACT:
The present invention provides an apparatus for selectively raising and lowering the entire mattress of a nursing home or hospital bed without changing the angle or tilt thereof, raising and lowering the head of the mattress, and raising and lowering the foot of the mattress, all without affecting the longitudinal configuration of the mattress itself. The invention further provides a nursing home or hospital bed incorporating the apparatus of the invention, and still further provides a method of achieving the various possible mattress configurations enabled by the invention. The apparatus of the invention includes a lifting bar longitudinally disposed relative to the stationary frame of the bed of the invention, and interconnected between moveable mattress supporting components and the stationary frame of the bed through separately operable pivotal interconnections. Each interconnection between the lifting bar and the stationary bed frame is made through a first lever arm pivotally interconnected to the lifting bar, a pair of second lever arms pivotally interconnected to the stationary bed frame, and a torque tube rigidly interconnected between the first lever arm and the second lever arms.
REFERENCES:
patent: 3073635 (1963-01-01), Schaefer
patent: 3802002 (1974-04-01), Jonas
patent: 4174547 (1979-11-01), Wetzler
patent: 4425673 (1984-01-01), Werner
patent: 4638516 (1987-01-01), Vrazlik
Stebbins Dick
Stebbins Scott
Grosz Alexander
Sefrna Ronald B.
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