Patents by Inventor Richard A. Rollyson

Richard A. Rollyson 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).

  • Extrusion, conveyance, and cutting system
    Patent number: 4585600
    Abstract: An apparatus 10 that extrudes, conveys and cuts a propellant strand into precise lengths independent of strand velocity is disclosed. Cutting of the strand is accomplished by a cutter 18 having a blade mounted on a shaft which in one revolution cuts the strand. The shaft is activated after passage of the strand end past a pair of downstream optic sensors; compensation is made for cutter delay and strand velocity by having cutting activation take place in the same amount of time as it takes the strand end to pass both sensors less cutter delay.
    Type: Grant
    Filed: November 28, 1984
    Date of Patent: April 29, 1986
    Assignee: Hercules Incorporated
    Inventors: Richard A. Rollyson, Peter D. Wesson, Paul S. Zerwekh