Seat cushions including a plurality of individual support cells
US5144705A · kind A · utility
Inventor
Key dates
| Filing date | Jun 6, 1991 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Jun 6, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/168
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.