Resources Contact Us Home
Apparatus and method of railroad tie replacement

Image Number 6 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
Heating pad
Techniques for accessing a parallel database system via external programs using vertical and/or horizontal partitioning
Power supply system for a data storage system and a method of controlling a power supply
Wafer recycling method
System and method for secure power systems infrastructure communications
Method of creating exercise routes for a user and related personal navigation device
Optical power measurement method, optical line terminal and optical network unit
  Randomly Featured Patents
Interconnect logic for a serial processor
Digital single-lens reflex camera
Fire extinguishing system for an electric arc welding apparatus
Methods of screening T1R2/T1R3 receptors for compounds which modulate sweet taste signaling
Optical connector
Methods of forming germanium-antimony-tellurium materials and a method of forming a semiconductor device structure including the same
Methods and systems for locating information in a computer system
Semi-fitted top sheet
Electrostatic chuck with heater
Carboxylic acid derivatives, their preparation and use