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
LED light
Card reader device
Anti-reductive high-frequency ceramic dielectric material sintered at low temperature and matched with copper internal electrode
Image capturing apparatus, control method thereof, and program
Real-time application of filters based on image attributes
Pluggable power cell for an inverter
Base station apparatus and method for use in mobile communication system
  Randomly Featured Patents
Mechanism for maintaining contact between the driving side of torque transfering surfaces of a first rotatable member and the driven side of matching torque transfering surfaces of a second ro
6- or 7- (2-imino-2-imidazolidine)-1,4-benzoxazines as .alpha. adrenergic agents
Unique bar code
Vacuum chuck with sealable cavity
End milling cutter and method of making same
Disc brake shim
Hood of a truck vehicle
Method and apparatus for controlling rate of voice service in a mobile communication system supporting voice service via packet network
Sheet processing apparatus above image forming means and image forming apparatus
Process for obtaining metal values from ores containing such metals as oxides or convertible into such oxides