Patent · US Expired

Inflatable supports

US4225989A · kind A · utility

214Cited by

7References

9Claims

0Family size

Assignee

Glynwed Group Services Limited · GB

Inventors

Aubrey E. Corbett · Evanston, US
Siu L. Ho · Coventry, GB
Ronald J. Clark · Beaconsfield, AU

Key dates

Filing date	Oct 5, 1978
Grant date	Oct 7, 1980
Priority date	—
Expiry date	Oct 5, 1998

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61H2201/025
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A ripple bed has an upper and a lower inflatable layer. The upper layer has separate air passages which are independently inflatable and deflatable to provide the rippling effect. The lower layer is separately inflatable to provide support over any area of the upper layer which is deflated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.