Patents by Inventor J. Robert Dieckmann

J. Robert Dieckmann 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).

  • Extrusion-fill method of producing an elastomeric spring
    Patent number: 4541978
    Abstract: An elastomeric spring is formed by extruding a rubbery material into a reinforcing sleeve in a mold during relative motion between the mold and nozzle, and thereafter vulcanizing.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: September 17, 1985
    Assignee: The Firestone Tire & Rubber Company
    Inventors: J. Robert Dieckmann, Michael L. Lauber, Mark R. Roodvoets
  • Apparatus for producing variable-rate spring
    Patent number: 4493631
    Abstract: An elastomeric spring is formed by extruding a rubbery material into a reinforcing sleeve in a mold during relative motion between the mold and nozzle, and thereafter vulcanizing.
    Type: Grant
    Filed: September 15, 1983
    Date of Patent: January 15, 1985
    Assignee: The Firestone Tire & Rubber Company
    Inventors: J. Robert Dieckmann, Michael L. Lauber, Mark R. Roodvoets
  • Adjustable die mechanism
    Patent number: 4439125
    Abstract: An adjustable die mechanism (10) for extruding a profiled strip of plastic or elastomeric material wherein a plurality of adjacent segments (44) is located upstream and in spaced relation from a final extrusion die assembly (32), having a predetermined profiled opening (38), with this plurality of segments (44) being mounted for individual and independent adjustment thereof, each segment having one end (46) capable of extending into the extrudate flow channel (26). Means for actuating (64) move the segments (44) relative to the profiled opening (38) in a predetermined manner such that moving the segments (44) into the profiled opening (38) modifies the flow of the extrudate material downstream of the segments (44) as the profiled strip emerges from the die assembly (32). The die mechanism includes control means (82) for selectively operating the means for moving the segments so as to produce a strip of material having the desired characteristics.
    Type: Grant
    Filed: March 31, 1982
    Date of Patent: March 27, 1984
    Assignee: The Firestone Tire & Rubber Company
    Inventors: J. Robert Dieckmann, Richard E. Burg, Louis Laurich, J. Richard McCarty