Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Metal detector










Image Number 8 for United States Patent #8473235.

The present invention provides apparatus for scanning a product to detect metal in that product. The apparatus comprises a drive coil (4), for generating an electromagnetic field in the product, and a detection coil arranged to detect fluctuations in the magnetic field caused by the presence of a metallic particle in the product. A drive circuit (26) for the drive coil (4) comprises a plurality of switches (19 to 22) driven by a controller (16), which switch alternately connect the drive coil across a potential difference to cause the drive coil to be driven at an operating frequency determined by operation of the switches. Using a switching circuit to drive the drive coil (4) greatly increases the number of frequencies at which the drive coil may be operated. The invention has particular application to the food industry.








 
 
  Recently Added Patents
Direct mode adapter based shortcut for FCoE data transfer
Systems for usage based rate limiting over a shared data link
Method and system for reduction of decoding complexity in a communication system
Blended block copolymer composition
Mobile tablet information handling system support
Structural plasticity in spiking neural networks with symmetric dual of an electronic neuron
Method for cutting C--Mn steel with a fiber laser
  Randomly Featured Patents
Conveyor apparatus for transporting a workpiece with a variable drive force
Power supply system for memory unit of camera
Parametric calibration for panoramic camera systems
Bicycle rear suspension
Method for cleaning and coating rod
Gas puffer-type circuit interrupter
Electronic instrument housing
Paper shredder
Beverage cooling and carrying apparatus and method for cooling and carrying beverage
Liquid crystal device and manufacturing method therefor, and electronic apparatus