Patents by Inventor Richard Trankle

Richard Trankle 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).

  • Portable tape dispenser unit
    Patent number: 4880152
    Abstract: The invention is directed to a dispensing unit which is secured to a support member by an expandable core. The dispensing unit includes a container which is capable of receiving an expandable core member to secure the dispensing unit to a support member. The expandable core member includes a cylinder which can be expanded outwardly to secure the dispensing unit to the support member.
    Type: Grant
    Filed: January 11, 1988
    Date of Patent: November 14, 1989
    Inventor: Richard Trankle
  • Backing sheet
    Patent number: 4211808
    Abstract: A backing sheet or mat for use in the exposure of photosensitive materials under vacuum conditions, includes a sheet of porous, woven fabric having a nonreflective surface, a sheet of flexible, but substantially rigid, polymeric material beneath the fabric sheet, and a sheet of flexible rubber material beneath the polymeric sheet. Each of the sheets is attached together to form the backing sheet and a plurality of apertures extend through the thickness of the sheets of polymeric and rubber material and are arranged over substantially the entire area of the latter sheets.
    Type: Grant
    Filed: November 10, 1977
    Date of Patent: July 8, 1980
    Assignee: Roberts & Porter, Inc.
    Inventor: Richard A. Trankle