US Patent No. 10,716,220


Patent No. 10,716,220
Issue Date July 14, 2020
Title Variable Temperature Controlled Soldering Iron
Inventorship Hoa Nguyen, Santa Ana, CA (US)
Assignee OK International, Inc., Cypress, CA (US)

Claim of US Patent No. 10,716,220

1. A soldering iron system with automatic variable temperature control comprising:a hand piece or robot arm including a soldering cartridge having a soldering tip, a coil that generates a magnetic field, and a temperature sensor for sensing a temperature of the soldering tip;
a variable power supply for delivering variable power to the coil to heat the soldering tip;
a processor including associated circuits for accepting a set temperature input and the sensed temperature of the soldering tip, and providing a control signal to control the variable power supply to deliver a suitable power to the coil to keep the temperature of the soldering tip at a substantially constant level of the set temperature input,
wherein the set temperature input is automatically adjustable by the processor based on one or more of a cartridge type, a tip type, a tip size, a tip shape, a thermal load type or size, and a quality of a soldering joint being formed by the solder tip and determined by the processor.