Patents by Inventor Leonard A. McLean

Leonard A. McLean 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: 4871047
    Abstract: This invention relates to grab irons and more particularly to two-piece, adjustable grab irons. The grab iron consists of a handhold-shape containing a mounting flange portion and a rod member as well as a grabfoot-shape containing a mounting flange portion and a base portion having a ring with a hole sized to receive the rod member of the handhold-shape. The rod member possesses a series of holes that are spaced along at least a portion of the rod member, and are formed at the same angle as measured from a horizontal vector. The base portion has a single pin hole having a size and angle that permits alignment with any of the pin holes in the rod member. The two pieces are secured together by the use of a metal fastener such as a steel expansion pin or a screw that is placed through both the pin hole in the base member and the appropriate hole in the rod member. The excess portion of the rod member extending past the grabfoot-shape is cut off.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: October 3, 1989
    Assignee: CSX Transportation, Incorporated
    Inventor: Leonard A. McLean
  • Patent number: 3937330
    Abstract: An unlocking device for a rotary coupler on a freight car including a bail rotatably mounted adjacent the open end of the car center sill and adapted to be selectively swung from a rest position to an action position in contact with a rotor element on the locklift assembly linkage of the coupler. An operating rod rotatably mounted on the end of the car is interconnected through a mechanical linkage arrangement to the bail. As this rod is manually turned from the side of the car a mechanical advantage is achieved and force is applied through the bail against the rotor element to cause the knuckle of the coupler to open.
    Type: Grant
    Filed: August 8, 1974
    Date of Patent: February 10, 1976
    Assignee: Seaboard Coast Line Railroad Company
    Inventor: Leonard A. McLean