Geomarine Systems, Inc.

Allen Kopfstein

Jack Wilkerson

Norman Dieter

In one preferred embodiment, an alternating pressure mattress system, including: a mattress including a plurality of narrow, parallel, closely-spaced, horizontally adjacent air sacks, every other one of the air sacks forming a first group of air sacks being commonly connected for the introduction thereinto of pressurized air and the others of the air sacks forming a second group of air sacks and being commonly connected for the introduction thereinto of pressurized air; apparatus to supply the pressurized air to the first and second groups of air sacks; control apparatus to alternatingly inflate and deflate the first and second groups of air sacks for selected periods of time; and the control apparatus providing for intervals of time at inflation/deflation transitions during which periods of time the pressurized air is being furnished to both the first and second groups of air sacks.

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Foxboro, MA, United States of America

Allen Kopfstein