Patent ID: 11944176
Assignee: SPUR CONCEPTS INC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC A  H | IPC A  H

Claim 10:
11. A battery-operated hair dryer, comprising:
first and second infrared bulbs positioned within and air flow channel; and
control circuitry coupled to the first and second infrared bulbs and powered by at least one battery, the control circuit configured to pulse the power to the first and second infrared bulbs out of phase at different times to maximize the remaining battery life;
wherein pulsing the power to she first and second infrared bulbs includes powering the first infrared bulb at 100% and the second infrared bulb at 70% for 2 seconds, then switch to the first infrared bulb at 70% and second infrared bulb at 100% for 2 seconds, repeating switching the power between the first and second infrared bulbs every 2 seconds until the battery is depleted.