Patents by Inventor Robert W. Gresham

Robert W. Gresham 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).

  • Cementitious product making system with product height gauging mechanism
    Patent number: 4095925
    Abstract: An improved concrete product making machine having a product forming mold with a cavity for receiving cementitious material; support surfaces such as pallets on which the formed products are supported; a transfer device by which "green" products or blocks are removed on their pallets from the vicinity of the mold; a block height gauging device downstream of the mold, for gauging the height of the products by gauging the distance from the top surfaces of the pallets to the top surfaces of the products; and mechanism for indicating deviations from predetermined limits to enable corrections to be made and making them.
    Type: Grant
    Filed: June 3, 1977
    Date of Patent: June 20, 1978
    Assignee: Besser Company
    Inventors: Harry F. Cruzen, Robert W. Gresham
  • Cementitious product making system with product height gauging mechanism
    Patent number: 4036570
    Abstract: A concrete product making machine having a product forming mold with a cavity for receiving cementitious material; support surfaces such as pallets on which the formed products are supported; a transfer device by which "green" products or blocks are removed on their pallets from the vicinity of the mold; a block height gauging device, downstream of the mold, for gauging the height of the products by gauging the distance from the top surfaces of the pallets to the top surfaces of the products; and mechanism controlling the volume of material delivered to the mold accordingly.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: July 19, 1977
    Assignee: Besser Company
    Inventors: Harry F. Cruzen, Robert W. Gresham
  • Cementitious product making system with product height gauging mechanism
    Patent number: 3963397
    Abstract: A concrete product making machine having a product forming mold with a cavity for receiving cementitious material; support surfaces such as pallets on which the formed products are supported; a transfer device by which "green" products or blocks are removed on their pallets from the vicinity of the mold; and a block height gauging device, downstream of the mold, for gauging the height of the products by gauging the distance from the top surfaces of the pallets to the top surfaces of the products.
    Type: Grant
    Filed: June 3, 1974
    Date of Patent: June 15, 1976
    Assignee: Besser Company
    Inventors: Harry F. Cruzen, Robert W. Gresham