Structure of alternately inflated/deflated air bed

Beds – Mattress – Having confined gas

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Details

5706, 5710, 5712, 5713, A47C 2710, A61G 7057

Patent

active

059183365

ABSTRACT:
An alternately inflated/deflated air bed being made by an arrangement of many air bag sets, each of them provided therein with a first air bag which is further provided therein with a second air bag. The first air bag thus is divided into two air chambers. An air pipe is provided on the first air bag for air intake and discharge. The second air bag is constantly kept inflated. The air bag sets are arranged in series. When the air bag sets of the odd and of the even numbers are alternately inflated/deflated by simultaneous discharge or intake of the two air chambers, the first air bags are inflated/deflated twice as much, so that a patient lying on the air bed obtains adequate ventilation by alternately changing contact points of his body with the air bed. When there is a power loss or machine failure which causes the first air bags to discharge, the second air bags support the patient to still feel comfortable.

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patent: 5651151 (1997-07-01), Schild
patent: 5685036 (1997-11-01), Kopfstein et al.
patent: 5774917 (1998-07-01), Liu

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