Resources Contact Us Home
Apparatus and method of railroad tie replacement

Image Number 7 for United States Patent #7571681.

Disclosed is a method and apparatus for the simultaneous removal of an old railroad tie that is part of an existing railroad tie with a new railroad tie. The apparatus includes a first railroad car that places a new tie adjacent to the existing railroad track, a second railroad car which picks up and removes an old railroad tie after it has been replaced with the new railroad tie, and a third railroad car located between the first car and second car which has a hydraulic actuator that uses the new tie to simultaneously push out the old tie from under the railroad track and place into position the new tie. The first car has a conveyor that removes a new tie from the first car and places it in a location that is end-to-end adjacent to the old tie. The third car, using the hydraulic actuator takes the new tie and uses it to push the old tie out from under the railroad track and simultaneously place the new tie in proper position. The third car also includes a railroad track lifting frame which can lift the railroad track underneath the third car a slight amount.

  Recently Added Patents
Method and system for associating a cell-sector with time-dependent location parameters
Soybean cultivar CL1013675
Microcapsules, their use and processes for their manufacture
Multi-touch recognition resistive touch screen for recognizing multi-touch coordinates through capacitor charging time
Sensor coating
Debugging using code analysis
Systems, methods, and computer readable media for providing information related to virtual environments to wireless devices
  Randomly Featured Patents
Array test using the shorting bar and high frequency clock signal for the inspection of TFT-LCD with integrated driver IC
System and method for selecting a pixel output format
Hermetically sealed elements of an actuator
Method and apparatus for restoring one-piece cultured marble countertop sinks
Article counting apparatus
Method for undetectably impeding key strength of encryption usage for products exported outside the U.S
Phenylamidinothiophene derivatives and anti-inflammatory agent containing the same
Serving tray
Virtual wire assembly having hermetic feedthroughs