Patents Assigned to Roospark Ag
  • Method for categorizing yarn defects and cleansing yarn
    Patent number: 5537811
    Abstract: A method and apparatus for simultaneously cleansing and grading yarn produced by a spinning or spooling machine with a plurality of spindles or primary spools. One spindle processor is associated with each spindle. The spindle-processor grades in a grading plane containing a cleansing envelope. All yarn defects located outside the cleansing envelope in the grading plane are considered unacceptable defects and are excised from the yarn.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: July 23, 1996
    Assignee: Roospark Ag
    Inventors: Roger Pidoux, Peter Haldemann