Patents by Inventor Hugh J. Tobler

Hugh J. Tobler 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).

  • Feeder for adding fibrous material to a conveyor having concrete ingredients
    Patent number: 5316197
    Abstract: The present invention is an apparatus for introducing fibrous material into a continuous flow of concrete. Fibrous material is pushed through an aperture located in the bottom of a container. As the fiber falls from the aperture, it is agitated and spread evenly onto the mixture of concrete. The resulting distribution of fiber within the concrete mixture increases the strength of the concrete while preventing undo grouping of the fibers.
    Type: Grant
    Filed: December 1, 1992
    Date of Patent: May 31, 1994
    Assignee: Cemen Tech, Inc.
    Inventors: Hugh J. Tobler, Larry G. Lepper, Robert B. Sawdon
  • Apparatus for treating sludge
    Patent number: 5284578
    Abstract: The method and apparatus of the present invention comprise an elongated auger housing having a rotatable auger therein. Augers are provided for delivering sludge and an additive such as cement kiln dust to the intake end of the mixer housing. An auger within the mixer housing conveys the material to the discharge end of the housing, and at the same time mixes the materials together.
    Type: Grant
    Filed: December 3, 1992
    Date of Patent: February 8, 1994
    Inventors: Hugh J. Tobler, Larry G. Lepper
  • Method for treating sludge
    Patent number: 5277825
    Abstract: The method and apparatus of the present invention comprise an elongated auger housing having a rotatable auger therein. Augers are provided for delivering sludge and an additive such as cement kiln dust to the intake end of the mixer housing. An auger within the mixer housing conveys the material to the discharge end of the housing, and at the same time mixes the materials together.
    Type: Grant
    Filed: October 15, 1992
    Date of Patent: January 11, 1994
    Inventors: Hugh J. Tobler, Larry G. Lepper
  • Method and means for treating sludge
    Patent number: 4981600
    Abstract: The method and apparatus of the present invention comprise an elongated auger housing having a rotatable auger therein. Augers are provided for delivering sludge and an additive such as cement kiln dust to the intake end of the mixer housing. An auger within the mixer housing conveys the material to the discharge end of the housing, and at the same time mixes the materials together.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: January 1, 1991
    Assignee: Cemen-Tech, Inc.
    Inventors: Hugh J. Tobler, Larry G. Lepper
  • Method and apparatus for supplying ingredients to a concrete mixer
    Patent number: 4174740
    Abstract: The apparatus of the present invention comprises a vehicle having a cement carrying container and two water carrying containers. The cement container is V-shaped in cross section with outwardly, flared walls adjacent the apex of the V, and includes an auger screw conveyor inside the container extending along the V-shaped bottom thereof. The auger is adapted to convey the cement within the container along the length of the auger to an outlet opening adjacent the bottom of the container. A vertical conveyor carries the cement upwardly from the outlet opening to a third conveyor which carries the cement to the concrete mixer being serviced. Within the container below the auger conveyor are a plurality of fluffing means which introduce air under pressure to the cement to cause it to be fluffed and to prevent it from packing around the auger screw.
    Type: Grant
    Filed: August 21, 1978
    Date of Patent: November 20, 1979
    Inventor: Hugh J. Tobler