IP Library › Granted Patent US 6,889,445
Granted Patent B1
US 6,889,445 · App. 10/753,124 · Granted May 10, 2005

Multi-wattage blow dryer with user inaccessible power selector

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Quick Facts
Patent No.
US 6,889,445
App. No.
10/753,124
Granted
May 10, 2005
Kind
B1
Abstract

A hair dryer, includes a casing, an electric blower adapted to draw air into the casing from an intake port and blow the air out an exhaust port, one or more electric heating elements disposed to heat the air as it passes through the casing, a power selector switch having two or more wattage settings and adapted to adjust the electrical power supplied to the heating elements, and wherein the power selector switch is designed to be substantially inaccessible to the user.

Claims (24)

1. A hair dryer, comprising:

a casing;

an electric blower adapted to draw air into the casing from an intake port and blow the air out an exhaust port;

one or more electric hair dryer heating elements disposed to heat the air as it passes through the casing;

a power selector switch having two or more wattage setting each wattage setting adapted to supply electrical power to the hair dryer heating elements; and

wherein said power selector switch is inaccessible to the user.

2. The hair dryer of claim 1 wherein the switching of the selector switch requires a tool.

3. The hair dryer of claim 1 wherein the power selector switch is concealed from the user's view during normal operation of the hair dryer.

4. The hair dryer of claim 1 wherein the power selector switch is adapted to short out one or more of the heating elements.

5. The hair dryer of claim 1 wherein the power selector switch is adapted to divert current amongst the heating elements.

6. The hair dryer of claim 1 further comprising a user control allowing the user to adjust the power output of the heating elements up to a maximum determined by the setting of the power selector switch.

7. The hair dryer of claim 6 wherein the user control allows the user to divert alternating current through a diode.

8. A hair dryer, comprising:

a casing;

electric blower means for drawing air into the casing from an intake port and blowing the air out an exhaust port;

one or more electric hair dryer heating means for heating the air as it passes through the casing;

power selector switching means having two or more wattage settings adapted to supply electrical power to the hair dryer heating elements; and

wherein said power selector switching means is hidden from a user.

9. A hair dryer, comprising:

a casing;

electric blower means for drawing air into the casing from an intake port and blowing the air out an exhaust port;

one or more electric hair dryer heating means for heating the air as it passes through the casing;

user switching means having two or more wattage settings adapted to supply electrical power to the hair dryer heating elements; and

a switch cover means for optionally limiting the wattage setting available to the user.