Patents by Inventor Leslie N. Roberts

Leslie N. Roberts 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: 4245747
    Abstract: An improved type "E" railway coupler with a top and bottom shelf is provided for reducing the possibility of derailments of railroad cars caused by accidental disengagement of interlocking couplers. The improved coupler has a top planar surface for fixedly carrying the top shelf and has a bottom planar surface for fixedly carrying the bottom shelf. The top shelf includes an upper abutment surface limiting the upward vertical movement of a mating coupler and has a set of downwardly-extending coplanar pads seated upon the top planar surface. The bottom shelf includes a lower abutment surface limiting the bottom vertical movement of a mating coupler and has a set of upwardly-extending coplanar pads positioned against the bottom planar surface.
    Type: Grant
    Filed: October 27, 1977
    Date of Patent: January 20, 1981
    Assignee: Buckeye International, Inc.
    Inventor: Leslie N. Roberts
  • Patent number: 4128062
    Abstract: An elongated unitary center-sill-and-center-brace member for use with sectionalized railroad car center sills is disclosed herein. The member includes reduced wall portions at each end for telescopic engagement with an inboard center sill section and an outboard center sill section, either of which may be of the double-Z or Wierton-type. In either case, the top surfaces of the sill sections and the top surface of the member lie in the same plane so as to define a flat upper surface for the sill assembly.
    Type: Grant
    Filed: January 6, 1977
    Date of Patent: December 5, 1978
    Assignee: Buckeye International, Inc.
    Inventor: Leslie N. Roberts
  • Patent number: 4051954
    Abstract: The following specification describes a replacement method and part for a coupler butt end in which the coupler is severed at the narrow hollow perimeter wall of the coupler shank close to the solid worn butt end portion. A cast replacement butt end part having a chamfer at the front end and a ring lip spaced inwardly of the front end is fitted to the coupler shank and welded thereto. The lip serves as a back up for the weld between the end surfaces of the coupler shank and the front end of the replacement part.
    Type: Grant
    Filed: June 10, 1976
    Date of Patent: October 4, 1977
    Assignee: Buckeye International, Inc.
    Inventor: Leslie N. Roberts