Breath transfer device
US4683869A · kind A · utility
Inventor
Key dates
| Filing date | May 6, 1986 |
| Grant date | Aug 4, 1987 |
| Priority date | — |
| Expiry date | May 6, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2007/0061
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A breath transfer device which uses the heat of exhaled air to warm the body of the wearer of the device in cold environments, and which facilitates condensation of moisture in the device to eliminate the formation of vapor clouds. The device uses a mouthpiece into which exhaled air is blown, and a length of insulated tubing to direct the warm air to a vest-like radiating chamber garment. The moisture in the expelled air condenses on the inner surfaces of the chamber and is retained in special condensing pockets formed at the ends of internal partitions which provide a sinuous path for air flow through the chamber. Cooled dry air is finally exhausted at the lowermost point of the radiating chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.