Water pillow with restricted flow
US7017214B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 2004 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | May 14, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47G2009/008
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A water based pillow includes a common fluid retaining envelope which is divided into two elongate regions having different fluid support and fluid dynamic characteristics. One region is basically uninterrupted while a second region has a series of heat seal islands joining opposed sides of the envelope. These heat seal islands reduce the amount of fluid retained in the second region. This second region is preferably the head support region and under load. Some fluid is displaced from this region and enters the first region which is preferably the neck support region. The amount of fluid in the envelope can be adjusted or set to maintain a thin layer of fluid beneath the user's head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.