Resources Contact Us Home
Gradient induction heating of a workpiece

Image Number 2 for United States Patent #7582851.

An apparatus and process are provided for gradient induction heating or melting of a workpiece with a plurality of induction coils, each of the plurality of induction coils is connected to a power supply that may have a tuning capacitor connected across the input of an inverter. The plurality of induction coils are sequentially disposed around the workpiece. The inverter has a pulse width modulated ac power output that may be in synchronous control with the pulse width modulated ac power outputs of the other power supplies via a control line between the controllers of all power supplies.

  Recently Added Patents
Detachably integrated battery charger for mobile cell phones and like devices
Biaxially oriented hydrolysis-stable polyester film comprising epoxidized fatty acid derivatives and a chain extender, and process for production thereof and use thereof
Systems and methods for adaptive error thresholds or adaptive modulation schemes based on atmospheric conditions
Complete context search system
Second order correction circuit and method for bandgap voltage reference
Digital display devices and digital projectors with expanded color gamut
Viewing stand
  Randomly Featured Patents
Polymeric flocculant and method of sludge dehydration
Rodent trap
System and method for enabling simultaneous multi-user electronic document editing
Binder ring clamp assembly
Reduced volume scavenging system for two cycle engines
Array tile system and method of making same
Semiconductor light-emitting device with partial encapsulation
Pendant having surface including metal and photoresist
Syringe needle sheath
Cartridge loader