Patents by Inventor Roland Kuttruff

Roland Kuttruff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 3986330
    Abstract: A yarn package is frictionally engaged by a roller and driven at a peripheral speed so as to pay off a filament that is wound on a spindle positively connected to the output shaft of a fixed-speed motor. This output shaft is also connected through a steplessly variable transmission to a roller-drive shaft that rotates the payoff roller and therefore determines the linear velocity of the filament. A pair of detectors are provided for generating respective outputs corresponding to the rotation speeds of the motor output shaft and the roller drive shaft. These two outputs are fed to a divider where they are combined into an actual-value signal that is compared with a set point so as to form a difference signal. A regulator operated by this deviation signal acts on the adjustment element of the steplessly variable transmission to maintain a constant ratio between the angular velocity of the two shafts so that uniform twist is imparted to the filament.
    Type: Grant
    Filed: April 8, 1975
    Date of Patent: October 19, 1976
    Assignee: Evolution SA
    Inventors: Roland Kuttruff, Mauro Sbalzarini