Patents Assigned to Metalfab, Inc.
  • Patent number: 4445839
    Abstract: A concrete mold press for a concrete molding machine includes a reciprocating tamper operatively movable to an operative position in pressing contact with the concrete in a mold. The tamper includes a tamping plate mounted to vertically oscillate in response to the press head vibrations to repeatedly strike the press head to provide a tamping force which compacts the concrete in the mold.
    Type: Grant
    Filed: September 16, 1982
    Date of Patent: May 1, 1984
    Assignee: Metalfab, Inc.
    Inventor: Julius Crane
  • Patent number: D278176
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: March 26, 1985
    Assignee: Hyde Park Metalfab Inc.
    Inventor: David L. Root
  • Patent number: D291427
    Type: Grant
    Filed: February 6, 1985
    Date of Patent: August 18, 1987
    Assignee: Metalfab, Inc.
    Inventors: Ronald A. Schaller, Wesley L. Steffensen, Philip W. Wright