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










Image Number 7 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
Consistent retention and disposition of managed content and associated metadata
Method and apparatus for networked modems
Polymeric compositions including their uses and methods of production
Extract of Vanilla planifolia
Memory management configuration
Polymer compositions and nonwoven compositions prepared therefrom
Messenger bag
  Randomly Featured Patents
Personal content server apparatus and methods
Head-protecting airbag apparatus
Automatic device for loading the total volume of a transport vehicle
Low density polyurethane foam, method of producing, and articles comprising the same
Plasma display apparatus
Mobile device charging station
Automated prolonged slow release intrauterine insemination using self retaining intrauterine insemination catheter
Thin film transistor, method of manufacturing the same and flat panel display device having the same
Device for the aligning of objects
Image reading device with reduced variations among signal levels