Controlled pressure and flotation system

Details Controlled pressure and flotation system Controlled pressure and flotation system

2005-04-19

2005-04-19

Trettel, Michael (Department: 3673)

Beds

Waterbed or associated device

Having baffle means

C005S665000, C005S671000

Reexamination Certificate

active

06880190

ABSTRACT:
A controlled pressure and floatation system includes support and flotation units, each comprised by two types of chambers: a main one that contains a liquid substance and a secondary empty chamber; interconnected by a free-flow supply pipe. The main chamber receives the body to be held displacing an amount of liquid substance, in proportion to the weight it receives, towards the secondary chamber, that has no contact with the supported body. The pressures and flotation are controlled by the relative height of the secondary chamber (initial and final pressures), its predetermined shape (sequence of pressures until reaching the resting stage); and the density of the liquid substance. Multi-systems to provide different pressures to different parts of the same body may be created with this basic unit or system.

REFERENCES:
patent: 1212479 (1917-01-01), Hall
patent: 3999235 (1976-12-01), Mollura
patent: 4143909 (1979-03-01), McFarlin
patent: 4422194 (1983-12-01), Viesturs et al.
patent: 4707872 (1987-11-01), Hessel
patent: 4738486 (1988-04-01), Surber
patent: 4907307 (1990-03-01), Weitzler
patent: 4929026 (1990-05-01), Barbelet
patent: 5860705 (1999-01-01), Ridder

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