Resources Contact Us Home
Tension controlled apparatus for feeding web material

Image Number 3 for United States Patent #4231560.

A tension controlled apparatus for feeding web material from a supply source to processing equipment of the type that exerts a pulling force on the web, the apparatus including a drive wheel and a driven wheel mounted for rotation about an axis parallel to the drive wheel and for shifting movement toward and away from the drive wheel, a web feed roller connected coaxially to the driven wheel for rotation thereby and means for guiding the web material to cause it to wrap part way around the web feed roller as it passes from the supply source to the processing equipment and exits from the web feed roller in an exiting direction having a substantial component in a direction to shift the driven wheel into driving engagement with the drive wheel in response to tension applied by the processing machine on the web of material exiting from the feed roller.

  Recently Added Patents
Devices including composite thermal capacitors
System for setting programmable parameters for an implantable hypertension treatment device
Group control method for machine type communication and mobile communication system using the method
Soybean cultivar CL1013665
Synchronization of web applications and media
High order continuous time filter
Electronic flash device
  Randomly Featured Patents
Display device and method for driving display device
Washing machine having a washing liquid pumping apparatus
System, method, and computer program product for rating based on a receiver offer
Synchronous semiconductor memory device
Noise-eliminating apparatus for a video tape recorder
Open drive regulator, and a method for obtaining software for an open drive regulator
Partial oxidation process
Dispenser for flexible sheet material
Collapsible baby play station
Apparatus for packing