Patents by Inventor Robert J. Holsgrove

Robert J. Holsgrove 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).

  • Patent number: 4193178
    Abstract: A coating roller having a cylindrical drum with a replaceable cover formed of a sheet metal substrate upon which is bonded a resilient plastic outer surface layer. A pair of closely spaced, parallel, longitudinally extending rigid strips are positioned upon the drum surface and fastened at their opposite ends to the drum ends for short distance sidewise movement towards and away from each other upon the drum surface. The drum surface, except for the area covered by and between the strips, is coated with an even thickness layer of a substantially incompressable, resilient, elastomeric material upon which the cover substrate is wrapped. The ends of the substrate are formed to engage with their adjacent strips so that movement of the strips towards each other locks the cover upon the drum and reverse movement permits disengagement of the cover ends from the strips for removal of the cover.
    Type: Grant
    Filed: May 18, 1978
    Date of Patent: March 18, 1980
    Assignee: Persista, Inc.
    Inventors: Alexander D. McArthur, Robert J. Holsgrove, Gerard Hodge
  • Patent number: 4110882
    Abstract: A coating roller is formed of a cylindrical drum and a replaceable cover. The cover comprises a thin, dimensionally stable, sheet metal substrate upon which is laminated a thick, resilient elastomer layer. The opposite ends of the substrate are provided with springy tongue-like formations which removably fit into and resiliently adjust to opposed, adjacent grooves in the surface of the drum for securing the cover upon the drum. The cover is made by initially forming a flat sheet to the peripheral surface size of the drum, with the tongue-like formations on its opposite ends, and then bending and holding the substrate in a mold having a circular diameter greater than the drum diameter so that the ends of the substrate are widely spaced apart. The elastomer layer is molded upon the substrate and the composite plastic-sheet metal cover is removed from the mold and then applied upon the smaller diameter drum wherein the opposite ends of the substrate are closely adjacent each other.
    Type: Grant
    Filed: October 21, 1977
    Date of Patent: September 5, 1978
    Assignee: Kenhar Products Incorporated
    Inventors: Gerard Hodge, Robert J. Holsgrove