Cordless electric hair-dryer

Claim 1

An electric hair dryer assembly having a stand, adapted to be connected to a source of electrical power, for receiving a cordless hand-held hair dryer, the assembly comprising: a portable hot air unit including a housing, said housing having a rear face and a front face; a generally U-shaped receptacle formed in the stand for receiving the portion of said housing including said rear face; a thermal reservoir means mounted within said housing adjacent said front face including a closed container having a heat conducting substance therein and a plurality of electrical resistors positioned in heat exchange relationship therewith and adapted to be activated during non use when mounted in the stand; a rechargeable battery mounted in a portion of said housing; fan means mounted in another portion of said housing for blowing air over said thermal reservoir means in heat exchange relationship with said closed container; and circuit means mounted in the stand and said housing for selectively energizing said rechargeable battery and electrical resistors only when said portable hot air unit is mounted in the stand and for operating said fan means to pulsate heated air out of the portable unit when the portable unit is removed from the stand, said circuit means including: a primary electrical circuit mounted in the stand adjacent said U-shaped receptacle for generating a high frequency electromagnetic field; and a secondary electrical circuit mounted in said housing adjacent the rear face thereof having an oscillator circuit with a resonant frequency slightly greater than that of the high frequency field in the primary circuit so that when said portable hot air unit is positioned in the stand, said primary electrical circuit includes electrical energy into said secondary electrical circuit.