Resources Contact Us Home
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
Re-establishing push notification channels via user identifiers
Combination photovoltaic and wind power generation installation
Alterable account number
Listing recommendation using generation of a user-specific query in a network-based commerce system
ESD protection device and method for producing the same
Use of physical deformation during scanning of an object to generate views of the object
Systems and methods for performing live chat functionality via a mobile device
  Randomly Featured Patents
Looptaker arrangement in sewing devices
Method for forming porous forming film wiring structure
Signal transmitting and receiving apparatuses
Heat exchanger, light source apparatus, and projector
Inking method and device for printing machine
Heat sink fan for cooling an electronic apparatus
Whip as part of a slaughter line
Separation of fine solids from petroleum oils and the like
Inhibitors of mammalian collagenase
Arrangement for protecting against the unauthorized reading of program words stored in a memory