Patents by Inventor Robert H. Beetle

Robert H. Beetle 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).

  • Submerged casting
    Patent number: 4807688
    Abstract: Metal castings are prepared using rigid closed molds by submerging the mold in a bath of lower temperature molten metal, with removal of the mold from the bath being handled to hold the metal inside the mold, but to allow the excess metal to run off the exterior of the mold without metal freezing thereto which could cause damage or locking-in of the mold.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: February 28, 1989
    Inventor: Robert H. Beetle
  • Method of and apparatus for immersion casting
    Patent number: 4667726
    Abstract: Metal castings are prepared using thin rigid closed molds by submerging the mold in a bath of high temperature molten metal, with removal of the mold from the bath being handled to hold the metal inside the mold, but to allow the excess metal to run off the exterior of the mold without metal freezing there which could cause damage or locking-in of the mold.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: May 26, 1987
    Inventor: Robert H. Beetle
  • Metal founding
    Patent number: 4411305
    Abstract: Metal founding in a glass-ceramic mold which is reusable.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: October 25, 1983
    Assignee: Abex Corporation
    Inventor: Robert H. Beetle
  • Railroad brake shoes with separable insert engageable with flange of a wheel
    Patent number: 4020928
    Abstract: An insert for a railroad brake shoe having a support plate engageable complementally with a portion of the shoe back. Shoulders are provided for preventing the lateral and longitudinal displacement of the insert relative to the brake head assembly. A guide is cantilevered from one side of the support plate and so configured to generally complementally fit the flange of the wheel, thereby to guide the shoe into aligned contact with the wheel tread when the brake is applied.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: May 3, 1977
    Assignee: Abex Corporation
    Inventor: Robert H. Beetle