Flotation mattress

Details Flotation mattress Flotation mattress

1978-09-01

1981-01-20

Frazier, Roy D.

Beds

Bedclothing

And means to facilitate changing thereof

5475, 5477, 267 95, 267160, A47C 2708, A47C 23047, A47C 2502

Patent

active

042453631

ABSTRACT:
Disclosed is a flotation mattress comprising (a) a planar, flexible bag (10) adapted to hold water during use of the mattress, (b) a hollow, annular compartment (12) surrounding the bag (10) in the plane of the bag, the compartment (12) being collapsible in the direction perpendicular to the plane of the bag (10), and (c) a plurality of springs (14, 42, 56) disposed in the compartment (12) with their axes of resiliency perpendicular to the plane of the bag (10), the springs (14, 42, 56) biasing the compartment (12) towards its uncollapsed position, and (d) means (20, 34, 36, 38) for maintaining the horizontal stability of the planar, flexible bag (10) while the mattress is in use.

REFERENCES:
patent: 2360715 (1944-10-01), Perry
patent: 3200417 (1965-08-01), Costello
patent: 3251078 (1966-05-01), Calla
patent: 3351964 (1967-11-01), Anson
patent: 3626523 (1971-12-01), Robins
patent: 4015299 (1977-04-01), Tinnel
patent: 4057860 (1977-11-01), Higgins et al.
patent: 4114211 (1978-09-01), Levine et al.

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