Heater
US6500201B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2001 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Mar 19, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2007/0268
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A heater comprises a cap 20 formed by joining and fixing together curved peripheries 10a as peripheries of two semi-elliptical heat-generator-containing sheets 10 of generally the same shape. The heat-generator-containing sheet 10 comprises a waterproof inner layer sheet 2, an air-permeable sheet 5 disposed so as to cover the entire surface of the inner layer sheet 2, and a plurality of heat generators 3 interposed between and held by the inner layer sheet 2 and the air-permeable sheet 5, which generate heat when in contact with an air. The heat generators 3 are disposed substantially over the entire surface of the cap 20. The heat-generator-containing sheets 10 are joined and fixed together with the respective inner layer sheets 2 being the inner surface. The heater realizes a simple handling when in use, a small temperature variation, and simple fabrication process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.