Low pressure air supply and control system

Details Low pressure air supply and control system Low pressure air supply and control system

1982-06-07

1986-07-01

Freeh, William L.

Pumps

Expansible chamber type

Having separate noncyclic valve

417566, 137883, F04B 2100, F04B 3910, F16K 1514

Patent

active

045977232

ABSTRACT:
The invention concerns the combination of electric motor, diaphragm air pump, valving and switches in a compact form to provide a low pressure air supply and control system for use in inflating and/or deflating air chambers in seats. The air chambers may be so placed as to provide support to areas of the back of an occupant, support to the occupant's thighs, either singly or both at the same inflation/deflation and/or movement of the side bolsters of the seat. Additionally, it may be used to inflate/deflate the seat bottom.

REFERENCES:
patent: 2253206 (1941-08-01), Farrow, Jr. et al.
patent: 2832373 (1958-04-01), Scholor
patent: 2986098 (1961-05-01), Trout et al.
patent: 3147767 (1964-09-01), Goss
patent: 3174507 (1965-03-01), Matts et al.
patent: 3499464 (1970-03-01), Williams et al.
patent: 3552436 (1971-01-01), Stewart
patent: 3671151 (1972-06-01), Duke et al.
patent: 4078728 (1978-03-01), Nordoon
patent: 4086036 (1978-04-01), Hagen
patent: 4491157 (1985-01-01), Hastimoto

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