Patents by Inventor Frank P. Bobb

Frank P. Bobb 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: 6296209
    Abstract: A railroad switch stand for moving a pair of switch points between two rails includes a vertically disposed spindle rotating about its principal axis and terminating adjacent its lower end in a stub shaft in which the spindle has a necked section of reduced diameter above the stub shaft including vertically aligned bench marks inscribed on the spindle immediately above and below the section of reduced diameter of the shaft, a horizontal crank threadingly engaged with the stub shaft and a connecting rod.
    Type: Grant
    Filed: April 20, 1999
    Date of Patent: October 2, 2001
    Inventor: Frank P. Bobb
  • Patent number: 6220553
    Abstract: An improvement in a railroad switch stand of the general type in which a vertical spindle is mounted for rotation within a switch stand housing, a horizontally extending connecting rod is operatively connected at its one end to railroad switch points and at its other end to a crank, the crank is carried by a hub, the hub is mounted at the lower end of the spindle for rotation with the spindle and the hub is held in a fixed vertical position on the spindle by means of a cross pin that passes diametrically through the spindle and the hub. The improvement of the invention being a safety plate positioned immediately below the spindle to prevent the hub from sliding off of the spindle should the cross pin fail.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: April 24, 2001
    Inventor: Frank P. Bobb
  • Patent number: 5094387
    Abstract: An adjustable hook flange guard rail assembly for use on trackwork including a guard rail, a plurality of tie plates having first and second recessed surfaces for receiving the base portions of rails and the hook flange of a guard rail, a plurality of adjustable chocks, each adjustable chock comprising a first and a second wedge shaped block and, a device for attaching the adjustable chock to the guard rail.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: March 10, 1992
    Assignee: Bethlehem Steel Corporation
    Inventors: Paul P. Rice, Frank P. Bobb
  • Patent number: 4283030
    Abstract: Apparatus for providing the proper spread between the switch rail and stock rail in a railway switch which includes a heel block of unique design which assures accurate alignment of the parts of the switch heel block.
    Type: Grant
    Filed: February 20, 1980
    Date of Patent: August 11, 1981
    Assignee: Bethlehem Steel Corporation
    Inventor: Frank P. Bobb
  • Patent number: D317278
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: June 4, 1991
    Inventor: Frank P. Bobb