Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Electrostatic charger and image forming apparatus
Method for manufacturing semiconductor device
Field emission cathode device and field emission display using the same
Method and apparatus for soft information transfer between constituent processor circuits in a soft-value processing apparatus
System and method to assess serviceability of device
Method for assisting in the checking of transaction records, transaction device, server, mobile terminal, and corresponding computer programs
Pausing a VoiceXML dialog of a multimodal application
  Randomly Featured Patents
Azeotropic or azeotrope-like compositions of ammonia and hydrofluorocarbons
Method for making a self-aligned vertical thin-film transistor in a semiconductor device
Composition comprising a polyol and a oil-soluble high carbon polar modified polymer
Apparatus and method of semantic-based publish-subscribe system
Gas supply system
Gas phase polymerization method
Pneumatic tire
Cutter
Al-Mg-Si aluminum alloy extruded product exhibiting excellent fatigue strength and impact fracture resistance
Single beam photoneutron probe and X-ray imaging system for contraband detection and identification