Patents by Inventor David D. Bradley

David D. Bradley 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).

  • Publication number: 20220371167
    Abstract: A fastener driving tool with a working cylinder and a piston, the piston outer surface having a lubricant-saturated foam material that stores and dispenses lubricant into the piston-cylinder wall interface, thereby increasing the performance and lifespan of the tool. Another embodiment discloses a two-part piston in which the bottom portion is made of metal and absorbs the main mechanical loading forces of the piston drive and return strokes, and the top portion is made of a non-metallic material that has surfaces that act as sliding bearings against the inner wall of the cylinder.
    Type: Application
    Filed: August 1, 2022
    Publication date: November 24, 2022
    Inventors: David D. Bradley, Thomas A. McCardle, Anthony D. Kabbes
  • Patent number: 11413734
    Abstract: A fastener driving tool with a working cylinder and a piston, the piston outer surface having a lubricant-saturated foam material that stores and dispenses lubricant into the piston-cylinder wall interface, thereby increasing the performance and lifespan of the tool. Another embodiment discloses a two-part piston in which the bottom portion is made of metal and absorbs the main mechanical loading forces of the piston drive and return strokes, and the top portion is made of a non-metallic material that has surfaces that act as sliding bearings against the inner wall of the cylinder.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: August 16, 2022
    Assignee: Kyocera Senco Industrial Tools, Inc.
    Inventors: David D. Bradley, Thomas A. McCardle, Anthony D. Kabbes
  • Publication number: 20200122308
    Abstract: A fastener driving tool with a working cylinder and a piston, the piston outer surface having a lubricant-saturated foam material that stores and dispenses lubricant into the piston-cylinder wall interface, thereby increasing the performance and lifespan of the tool. Another embodiment discloses a two-part piston in which the bottom portion is made of metal and absorbs the main mechanical loading forces of the piston drive and return strokes, and the top portion is made of a non-metallic material that has surfaces that act as sliding bearings against the inner wall of the cylinder.
    Type: Application
    Filed: October 16, 2019
    Publication date: April 23, 2020
    Applicant: Kyocera Senco Industrial Tools, Inc.
    Inventors: David D. Bradley, Thomas A. McCardle, Anthony D. Kabbes
  • Patent number: 4135300
    Abstract: A lamination trimming device is disclosed for trimming excess laminating film along edges of a laminated card or sheet product. The trimming is performed such that a border of sealed laminating film remains along edges of the product. The device includes lower and upper guide members between which the laminating film is retained. A cutting blade is positioned above an upper guide member for trimming off the excess film and a deflecting surface is provided on a lower guide member for guiding the device along edges of the laminated product and for deflecting the excess laminated film to be trimmed. Both straight and curved surfaces may be trimmed with the device disclosed herein.
    Type: Grant
    Filed: November 4, 1977
    Date of Patent: January 23, 1979
    Assignee: General Binding Corporation
    Inventor: David D. Bradley