Patents by Inventor George R. Sprague

George R. Sprague 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).

  • Carpet underlay comprising foamed scrap particles
    Patent number: 4037013
    Abstract: A carpet underlay and method of making same are provided wherein the carpet underlay comprises a layer of bonded scrap particles of flexible elastomeric foam and at lest another layer bonded against the layer of bonded scrap particles free of additional adhesive means between layers.
    Type: Grant
    Filed: November 7, 1975
    Date of Patent: July 19, 1977
    Assignee: Dayco Corporation
    Inventor: George R. Sprague
  • Method of making carpet underlay
    Patent number: 3979489
    Abstract: A method of making a carpet underlay is provided wherein the underlay is comprised of a sponge rubber body having a load-carrying surface defined by a plurality of cooperating closed-area coplanar portions which define the major part of the area of a plan view of such body.
    Type: Grant
    Filed: June 26, 1975
    Date of Patent: September 7, 1976
    Assignee: Colonial Rubber Works, Inc.
    Inventor: George R. Sprague
  • Apparatus for making carpet underlay
    Patent number: 3961875
    Abstract: A carpet underlay and an apparatus for and method of making same is provided wherein the carpet underlay is comprised of a sponge rubber body having a load-carrying surface defined by a plurality of cooperating closed-area coplanar portions which define the major part of the area of a plan view of such body.
    Type: Grant
    Filed: June 26, 1975
    Date of Patent: June 8, 1976
    Assignee: Colonial Rubber Works, Inc.
    Inventor: George R. Sprague