Patents by Inventor Robert R. Workman

Robert R. Workman 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).

  • Cutting mats and methods of making same
    Patent number: 10160168
    Abstract: In various embodiments, a method of making a cutting mat backing includes creating a roving by wrapping a fiber material around a rotary cylinder under tension to form a plurality of layers. Each of the plurality of layers is angled with respect to a central axis of the rotary cylinder and the roving has a normalized axial flexural rigidity of from 2 lbf.in2 to 30 lbf.in2 over a beam width of 1 inch and a ratio of normalized circumferential flexural rigidity to normalized axial flexural rigidity of from 1:1 to 30:1. The method further includes infusing the roving with a polymer resin and curing the resin via electromagnetic radiation to form the cutting mat backing. Cutting mats including the cutting mat backing are also described.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: December 25, 2018
    Assignee: DAY INERNATIONAL INC.
    Inventors: Robert R. Workman, Andrew G. Miller, James C. Rogers
  • CUTTING MATS AND METHODS OF MAKING SAME
    Publication number: 20170080645
    Abstract: In various embodiments, a method of making a cutting mat backing includes creating a roving by wrapping a fiber material around a rotary cylinder under tension to form a plurality of layers. Each of the plurality of layers is angled with respect to a central axis of the rotary cylinder and the roving has a normalized axial flexural rigidity of from 2 lbf.in2 to 30 lbf.in2 over a beam width of 1 inch and a ratio of normalized circumferential flexural rigidity to normalized axial flexural rigidity of from 1:1 to 30:1. The method further includes infusing the roving with a polymer resin and curing the resin via electromagnetic radiation to form the cutting mat backing. Cutting mats including the cutting mat backing are also described.
    Type: Application
    Filed: September 22, 2016
    Publication date: March 23, 2017
    Applicant: Day International, Inc.
    Inventors: Robert R. Workman, Andrew G. Miller, James C. Rogers
  • Lift and hold device
    Patent number: 9156657
    Abstract: This invention relates to a free standing lifting device which means that no additional support is required to support the lifting action of the device. The lifting device comprises a lift carriage further comprising at least one lift arm joined to a motor by way of a cable, at least one lift channel having a lift opening for receipt of the lift arm, at least one support arm and at least one support channel having a support opening for receipt of the support arm.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: October 13, 2015
    Inventors: William J. Sturmer, Robert R. Workman, Jr.
  • Lift and hold device
    Publication number: 20110073413
    Abstract: This invention relates to a free standing lifting device which means that no additional support is required to support the lifting action of the device. The lifting device comprises a lift carriage further comprising at least one lift arm joined to a motor by way of a cable, at least one lift channel having a lift opening for receipt of the lift arm, at least one support arm and at least one support channel having a support opening for receipt of the support arm.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 31, 2011
    Inventors: William J. Sturmer, Robert R. Workman, JR.