Self-inflating support device including curved memory plate

Details Self-inflating support device including curved memory plate Self-inflating support device including curved memory plate

1991-10-25

1993-03-02

Dorner, Kenneth J.

Chairs and seats

Bottom or back with means to alter contour

Providing support for lower back region

297DIG8, A47C 300

Patent

active

051903482

ABSTRACT:
A self-inflating support device is described. The device has utility in various environments, particularly in seating devices deployed in motorized vehicles. The support device comprises an inflatable bladder having a release structure to control air flow. A memory plate deployed within the inflatable bladder urges the bladder to full expansion when the release structure is open. When it is desired to form the support device to the contours of a body area, the release structure is opened while the body area is reclined thereagainst. The force of reclining compresses the bladder and memory plate. Closing the release structure retains the device in the desired contour by the static air mass formed therein. Reinflation is achieved without use of a pump by the action of the memory plate. When the valve is reopened, the memory plate expands the bladder, drawing air into the bladder through the release structure.

REFERENCES:
patent: 3652126 (1972-03-01), Folling
patent: 3770315 (1973-11-01), Smittle et al.
patent: 4516568 (1985-05-01), Baxter et al.
patent: 4516788 (1985-05-01), Umetsu et al.
patent: 4690456 (1987-09-01), Chiba et al.
patent: 5076643 (1991-12-01), Colasanti et al.

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