Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatus for detection of edge position thickness or splice position of a material web










Image Number 5 for United States Patent #5583828.

A series of pulses of ultrasonic wave emitted from the transmitter with a specified period are received by the receiver. The received signals are rectified to a smooth wave with a single peak. The occurrence time of the peak is determined to gain and store the peak value, which corresponds to the edge position, thickness or splice position of the web. Alternatively, the transmitter emits a series of pulses of ultrasonic wave with a specified period and the peak value in the signals received by the receiver is once held in the peak-holding circuit. The peak voltage held is discharged and reduced with the discharge device and smoothing of the charged voltage yields its mean value, which corresponds to the edge position, thickness or splice position of the web.








 
 
  Recently Added Patents
Supporting multiple channels of a single interface
Support for a portable electronic device
Oscillator circuit which compensates for external voltage supply, temperature and process
Control method of LPI lamp for LPI vehicle and logic therefor
Light irradiation element, image forming structure, and image forming apparatus
Methods for detecting DNA-binding proteins
(4936
  Randomly Featured Patents
Valve for safeguarding the outer container of double wall vacuum-insulated storage containers for low boiling liquified gases
Method and apparatus for die necking a metal container
Multi-functional control lever for speed change devices of bicycles and similar vehicles
Polysiloxane composition having superior storage stability and rubber composition containing same
Toner processes
Laser peening of components of thin cross-section
Flexible duct with a textile reinforcement
Alkaline cleaning and sanitizing composition effective for soap scum removal
Thermoplastic block copolymers consisting of polyalkyl(meth)acrylate and polyamide segments and the use thereof
Information delivery system and method using positional information