Electric hair dryer with multi-mode switch for air temperature and flowrate control
US4711988A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1985 |
| Grant date | Dec 8, 1987 |
| Priority date | — |
| Expiry date | Oct 1, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24H3/0423
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A hair dryer including a blower for selectively generating a current of air at various flow rates, a thermostatically controlled electrical heater for selectively heating the current of air at various heat generation rates and a switch mode switch and associated circuitry for selectively activating the heater and the blower and including a three position switch actuated by a single button and having a first normal mode position wherein the heater is activated to generate heat at a first heating rate and the blower is activated to generate a current of air having a first flow rate, a second cool-shot mode position wherein the heater is activated to generate heat at a second heating rate which is less than the first heat rate and the blower means is activated to generate a current of air having a second flow rate which is less than the first flow rate and a third hot-shot mode position whereupon the heater is activated to generate heat at a third heating rate which is equal to or greater than the first heat rate and the blower is activated to generate a current of air having a third flow rate which is lower than the first flow rate. A temperature switch independent of the mode switch…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.