Title:
SAFETY DEVICE
Document Type and Number:
WIPO Patent Application WO/2003/026092
Kind Code:
A1
Abstract:
A safety device reliably cuts off the drive current of an electric apparatus in response to various abnormalities by combination with a normally used current breaker. For example, a current breaker which senses flood or leakage is arranged in a power source plug (50) at the end of a power source cord (26), and a power switch (31) is connected to one power source line (32−1) led from the power source cord (26) into a hair dryer (25). A first sensor (34) and a second sensor (39) which are normally−open but close when sensing abnormality are arranged in the grip section (27) and blower section (28) between the other power source line (32−2) and a sensing line (33). When the sensors close in abnormality, the sensing line (33) carries current and a situation similar to flood or leakage develops on the current breaker side, so that the current of the hair dryer is cut off instantaneously.
Inventors:
TAKEDA HIDEAKI (JP)
Application Number:
PCT/JP2002/008945
Publication Date:
March 27, 2003
Filing Date:
September 03, 2002
Export Citation:
Assignee:
UCHIYA THERMOSTAT (JP)
TAKEDA HIDEAKI (JP)
TAKEDA HIDEAKI (JP)
International Classes:
H01H37/54; H01H37/76; H02H3/33; H02H5/04; H02H5/00; H02H5/08; (IPC1-7): H02H5/00; H02H5/04; H02H3/16; H02H3/33
Foreign References:
| JPH11178196A | 1999-07-02 | |||
| JPS63120516U | 1988-08-04 | |||
| JP2000032651A | 2000-01-28 | |||
| JPH1080049A | 1998-03-24 | |||
| JPS63133821A | 1988-06-06 | |||
| JPH09274842A | 1997-10-21 | |||
| JPH09247846A | 1997-09-19 | |||
| JPH10239376A | 1998-09-11 |
Attorney, Agent or Firm:
Osuga, Yoshiyuki (Nibancho Bldg. 8-20, Nibanch, Chiyoda-ku Tokyo, JP)
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