Beds – Bedclothing – And means to facilitate changing thereof
Patent
1991-06-06
1992-09-08
Trettel, Michael F.
Beds
Bedclothing
And means to facilitate changing thereof
5455, 5457, 5654, A47C 2002
Patent
active
051447053
ABSTRACT:
A seat cushion is provided that comprises a baseboard having an upper surface bounded by a forward edge, a rear edge, and two sides. A number of pressurized cells or bladders are attached to the upper surface and arranged in rows between the forward and rear edges, the rows are spaced apart to define a central depression between the rows. The cells can be independently and selectively pressurized by a fluid such as air such that the support characteristics of the cells can be adjusted to a desired body support profile. The cells are also physically spaced and mechanically decoupled such that deformation of one cell under load is not significantly transmitted to an adjacent cell. The cell spacing is such to provide body support primarily against the buttocks and thighs and to reduce pressure against the coccyx, anal, ischial, and genital areas of a user. The rearmost cells in the rows can be spaced so as to provide an ischial cavity for relieving pressure on the ischial tuberosity areas of a user.
REFERENCES:
patent: 3192540 (1965-07-01), Swank
patent: 3608961 (1971-09-01), Von Heck
patent: 4067078 (1978-01-01), Winston
patent: 4186734 (1980-02-01), Stratton
patent: 4694520 (1987-09-01), Paul et al.
Epstein Natan
Trettel Michael F.
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