Patents by Inventor Murray C. Tribbett

Murray C. Tribbett 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: 4518337
    Abstract: A hydraulic press of the type having first and second oblong side plates joined at upper and lower ends thereof to form a structure supporting upper and lower hot plates and injection molding equipment in which one of the side plates includes channels formed in its interior for conveying hydraulic fluid from a source of fluid under pressure, through valves mounted on the side plate, to and from the hydraulic equipment, and back to a reservoir.
    Type: Grant
    Filed: August 31, 1983
    Date of Patent: May 21, 1985
    Assignee: The French Oil Mill Machinery Co.
    Inventor: Murray C. Tribbett
  • Patent number: 3962968
    Abstract: A baling press including a cavity, having separate loading and unloading openings near its opposite ends, a bolster which moves in the cavity to reduce the volume of the cavity and compress the material loaded therein to a predetermined size, a ram connected to reciprocate the bolster within the cavity between a retracted position clear of the loading opening and an advanced position beyond the loading opening, and a door linked to a cooperating cam and a follower means mounted one to reciprocate with the ram and the other to control the motion of the door whereby movement of the bolster from its retracted position to its advanced position in a compression stroke will automatically close the door until the bolster returns to its retracted position.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: June 15, 1976
    Assignee: The French Oil Mill Machinery Company
    Inventors: Murray C. Tribbett, Nicholas L. Manko
  • Patent number: 3947196
    Abstract: A rubber material is sequentially injected into a plurality of elongated molds positioned within a corresponding plurality of vertical hydraulic presses arranged in a row. The material is injected into each mold by a pair of injection molding machines which are arranged in side-by-side relation and are supported by a carriage for both axial and lateral movement as a unit. Each of the molds has a set of mold sections which are supported by upper and lower platens of the corresponding press, and each press includes a set of vertical tie rods which are spaced longitudinally along the mold and are actuated by hydraulic cylinders for rigidly clamping the platens and mold sections together. The tie rods have upper end portions which are releasably locked to the upper mold platen by a laterally movable latch mechanism. After a molding cycle, the latch mechanism is released, and the tie rods are retracted downwardly.
    Type: Grant
    Filed: March 28, 1974
    Date of Patent: March 30, 1976
    Assignee: The French Oil Mill Machinery Company
    Inventors: Murray C. Tribbett, George H. Laug