Patents by Inventor Clebern W. Sigley

Clebern W. Sigley 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).

  • Piston and shaft assembly for an end-of-car cushioning unit
    Patent number: 4782740
    Abstract: A method of repairing an end-of-car cushioning device for railroad cars is disclosed. The cushioning device is of the type having a piston and a shaft connected to the piston. In such devices, the shaft may become damaged with wear. In the disclosed method of repair, the old piston and shaft are removed from the cushioning device. The old shaft is substantially removed from the piston. The piston's true center is found, and a bore is cut through it. The bore is threaded, and an angled chamfer is cut in one end of the bore. A new shaft is provided with a threaded portion, the threads being adapted to mate with the threads of the bore. The shaft also has an angled chamfer adapted to mate with the bore's chamfer. The new shaft is connected to the old piston so that the threads engage and the chamfers abut.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: November 8, 1988
    Assignee: Co-Ordinated Railway Services, Inc.
    Inventors: Donald R. Fagin, Howard E. Tonn, Clebern W. Sigley
  • Method for repairing a piston and shaft assembly
    Patent number: 4719686
    Abstract: A method of repairing an end-of-car cushioning device for railroad cars is disclosed. The cushioning device is of the type having a piston and a shaft connected to the piston. In such devices, the shaft may become damaged with wear. In the disclosed method of repair, the old piston and shaft are removed from the cushioning device. The old shaft is substantially removed from the piston. The piston's true center is found, and a bore is cut through it. The bore is threaded, and an angled chamfer is cut in one end of the bore. A new shaft is provided with a threaded portion, the threads being adapted to mate with the threads of the bore. The shaft also has an angled chamfer adapted to mate with the bore's chamfer. The new shaft is connected to the old piston so that the threads engage and the chamfers abut.
    Type: Grant
    Filed: May 28, 1986
    Date of Patent: January 19, 1988
    Assignee: Co-Ordinated Railway Services, Inc.
    Inventors: Donald R. Fagin, Howard E. Tonn, Clebern W. Sigley