Patents by Inventor Donald A. Daugherty

Donald A. Daugherty 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).

  • Casting cut-off machine
    Patent number: 4123876
    Abstract: An apparatus for cutting off castings from investment cast set-ups comprising a mandrel assembly engageable with the inside of the center tree of the set-up to clamp it with its longitudinal axis in a horizontal plane, a vertically movable carriage support, a carriage movable along the support parallel to the longitudinal axis of the center tree, a cut-off assembly including a horizontal abrasive disc on the carriage, and structure permitting lateral adjustment of the cut-off assembly in a direction normal to that of carriage movement.
    Type: Grant
    Filed: December 16, 1976
    Date of Patent: November 7, 1978
    Assignee: Precision Metalsmiths, Inc.
    Inventors: John H. Simmons, Donald A. Daugherty
  • Method and apparatus for feeding granulated material
    Patent number: 4016922
    Abstract: Method and apparatus are disclosed for cyclically metering charges of a granulated wax-like or resinous material from a bulk supply and feeding such metered charges into a heated, pressurized reservoir. Each charge of the granulated material is fluidized with a stream of air under pressure to insure flow of the granules. The stream of air also serves to pressurize the reservoir and prevent the escape of hot air therefrom. Cooling of the reservoir inlet to prevent agglutination of the granules also is contemplated.
    Type: Grant
    Filed: March 31, 1976
    Date of Patent: April 12, 1977
    Assignee: Precision Metalsmiths, Inc.
    Inventors: John H. Simmons, Donald A. Daugherty
  • Method and apparatus for feeding granulated material
    Patent number: RE30225
    Abstract: Method and apparatus are disclosed for cyclically metering charges of a granulated wax-like or resinous material from a bulk supply and feeding such metered charges into a heated, pressurized reservoir. Each charge of the granulated material is fluidized with a stream of air under pressure to insure flow of the granules. The stream of air also serves to pressurize the reservoir and prevent the escape of hot air therefrom. Cooling of the reservoir inlet to prevent agglutination of the granules also is contemplated.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: March 11, 1980
    Assignee: Precision Metalsmiths, Inc.
    Inventors: John H. Simmons, Donald A. Daugherty