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
Garden tool handle
Method and apparatus for communicating electronic service guide information in a satellite television system
Biphotonic photosensitizers, nanoparticles containing the same and their use as drugs
Cytokine biomarkers as predictive biomarkers of clinical response for Glatiramer acetate
Electronic flash device
Wind farm, wind power plant in a wind farm and operating control for this purpose
System or method to assist and automate an information security classification and marking process for government and non-government organizations for information of an electronic document
  Randomly Featured Patents
Semi-coaxial cavity resonator filter
Steel for separators of solid-oxide type fuel cells
Apparatus for treating contaminated water
Pick up cover for use in transporting electrical headers
Optical Disc cd recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards
Processing machine
Semiconductor memory device and memory system
Methodology for coordinating centralized key management and encryption keys cached through proxied elements
Method of forming photoresist film exhibiting uniform reflectivity through electrostatic deposition