Hair dryer
US10849400B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2013 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Oct 2, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA45D20/122
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention relates to hair dryers. Various techniques for improving air flow in hair dryers are described, including a hair dryer providing laminar flow air. In another variant a hair dryer has a two air flow channels: one a hot air channel the other a cool air channel, with the cool air channel circumscribing the hot air channel. The nozzle end of the hair dryer is arranged such that the cool air channel extends forward of the hot air channel outlet. This allows a hair dryer to be placed close to, or on, a person's hair/head without and risk of burning the person's head. A hair dryer with external power supply is also described which reduces the weight of the housing held by a user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.