Non-numeric temperature indicating method for a hair styling iron
US5749379A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1996 |
| Grant date | May 12, 1998 |
| Priority date | — |
| Expiry date | Apr 25, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K1/14
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A curling iron system which, in addition to conventional mechanical elements of base, curling irons, ovens, holders and the like, utilizes an accurate temperature measurement and display capability adapted for use by salon personnel without sophisticated technical know-how. The temperature measurement is implemented by a thermocouple and the display is implemented using a plurality of light emitting diodes (LEDs) connected to the thermocouple by a thermocouple amplifier and a display driver. The combination of thermocouple, LED display and intermediate electronics, operates to provide an accurate indication of the actual surface temperature of the curling iron and thus assure that the iron will be precisely the appropriate temperature for curling or straightening the particular thickness hair being serviced. In the preferred embodiment disclosed herein, the thermocouple is mounted on a platform adjacent the oven and the display is positioned on a vertically oriented member behind the thermocouple platform. In this manner, the user can simply remove the curling iron from the oven chamber and place it on the thermocouple platform while reading the LED display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.