Patents by Inventor Frank Wallitsch, Jr.

Frank Wallitsch, Jr. 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: 4085897
    Abstract: An improved apparatus for the simultaneous crushing and drying of materials, such as coal with high moisture content, which includes a hammermill having parallel top inlets for the material and a rapid flow of hot air. The material drops into the impactor circle of the hammermill prior to any substantial mixing with the flow of hot air. The flow of hot air is selectively directed into the crushing chamber, behind the breaker plates or in parallel to both locations, to dry the material during crushing. A substantially unobstructed bottom outlet permits high flow rates through the apparatus. A method of crushing and drying high moisture content material is also disclosed.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: April 25, 1978
    Assignee: Pennsylvania Crusher Corporation
    Inventors: William F. Hahn, Joseph P. Nigro, Frank Wallitsch, Jr.
  • Patent number: RE30778
    Abstract: An improved apparatus for the simultaneous crushing and drying of materials, such as coal with high moisture content, which includes a .[.hammermill.]. .Iadd.crusher .Iaddend.having parallel top inlets for the material and a rapid flow of hot air. The material drops into the .[.impactor.]. .Iadd.impact .Iaddend.circle of the .[.hammermill.]. .Iadd.crusher .Iaddend.prior to any substantial mixing with the flow of hot air. The flow of hot air is selectively directed into the crushing chamber, behind the breaker plates or in parallel to both locations, to dry the material during crushing. A substantially unobstructed bottom outlet permits high flow rates through the apparatus. A method of crushing and drying high moisture content material is also disclosed.
    Type: Grant
    Filed: April 23, 1980
    Date of Patent: October 20, 1981
    Assignee: Pennsylvania Crusher Corporation
    Inventors: William F. Hahn, Joseph P. Nigro, Frank Wallitsch, Jr.