Beds – Invalid bed or surgical support – Sectional user supporting surface
Patent
1998-12-08
2000-12-26
Melius, Terry Lee
Beds
Invalid bed or surgical support
Sectional user supporting surface
5600, 5613, 5616, A61G 705
Patent
active
061639044
ABSTRACT:
An articulated table for supporting a person is comprised of a frame with legs, an articulated tabletop supported by the frame, and a motorized actuator assembly under the tabletop. The tabletop includes a pivotable torso section hinged to a fixed seat section, which is hinged to a pivotable upper leg section, which is hinged to a pivotable lower leg section. The actuator assembly includes first and second pairs of actuating linkages for respectively moving the torso and upper leg sections. Each actuating linkage is comprised of a power axle spaced from a follower axle. A crank arm extends orthogonally from the power axle. A lifting arm extends orthogonally but unevenly in different directions from the follower axle. Rotation of the crank arm is transmitted to the lifting arm by a connecting arm pivotally connected between the crank arm and a shorter section of the lifting arm. A roller is attached to the end of the longer section of the lifting arm. To raise the tabletop, the longer section of the lifting arm of each actuating linkage is rotated upwardly in a predetermined direction by rotating the crank arm in a similar direction. The lower leg section is kept in a level attitude throughout its range of movement by idler arms connected between its lower side and the frame.
REFERENCES:
patent: 2917753 (1959-12-01), Portis et al.
patent: 3278952 (1966-10-01), Holm
patent: 5063623 (1991-11-01), Bathrick et al.
patent: 5157787 (1992-10-01), Donnellan et al.
patent: 5161274 (1992-11-01), Hayes et al.
patent: 5500002 (1996-03-01), Riddle et al.
patent: 5579550 (1996-12-01), Bathrick et al.
Conley Fredrick
Everett Associates, Inc.
Lo Jack
Melius Terry Lee
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