Water mattress construction
US4100634A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 6, 1976 |
| Grant date | Jul 18, 1978 |
| Priority date | — |
| Expiry date | Oct 6, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C27/085
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A water mattress construction is disclosed. The construction involves a folded one piece vinyl sheet wherein the various panels are joined at the vertical corners, along the lengthwise lower edges and side to side across the middle of the bottom. By so locating the seams, not only are all but the vertical corner seams supported directly by the mattress frame, but they are also removed from the upper area of the mattress which is generally subjected to flexing. A cappable fitting to facilitate filling and emptying of the mattress is included. The various panels are joined by overlapping the vinyl material, and subsequently heat-sealing them to produce strong lapped seams throughout.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.