Self-adjusting pressure relief seating system and methodology

Details Self-adjusting pressure relief seating system and methodology Self-adjusting pressure relief seating system and methodology

1995-11-14

2000-03-14

Nelson, Jr., Milton

Chairs and seats

Bottom or back

Having fluent material

29745255, 2972191, 2972843, 297DIG4, 5654, A47C 702

Patent

active

060362715

ABSTRACT:
A seating system is designed for self-adjusting pressure relief for use with wheelchairs and other generally confined seating arrangements. One or more support chambers filled with resilient foam and a fluid such as air are arranged on an upper support surface. A self-adjusting reservoir is provided and arranged in fluid communication with the chamber. A constant force spring cooperates with a pivoting plate arrangement and acts on the reservoir so as to balance fluid pressure between the reservoir and the support chamber with a patient received thereon. In some embodiments, three fluid/resilient foam chambers may be provided for independent operation with three respective adjustable reservoirs. In other embodiments, fluid filled chambers may be operatively associated with respective reservoirs and pivoting actuation plates specially adapted to fit below a wheelchair seat without interfering with the wheelchair support structure, or specially adapted to be carried in a pack on the wheelchair seat back. Present arrangements may be modified for use with other seating conditions, such as geriatric chairs and seats for vehicles of all types.

REFERENCES:
patent: 3533113 (1970-10-01), Stamberger
patent: 3611455 (1971-10-01), Gottfried
patent: 3644950 (1972-02-01), Lindsay, Jr.
patent: 4212496 (1980-07-01), Kirkham, Jr.
patent: 4629246 (1986-12-01), Fulton
patent: 5082326 (1992-01-01), Sekido et al.
patent: 5142717 (1992-09-01), Everard et al.
patent: 5433506 (1995-07-01), Jensen
patent: 5558398 (1996-09-01), Santos

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