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
Polyurethane resin, toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method
Register files for a digital signal processor operating in an interleaved multi-threaded environment
Broadband optical network apparatus and method
Persistent luminescence nanoparticles used in the form of a diagnosis agent for in vivo optical imaging
RF amplifier with digital filter for polar transmitter
Spectral sensor for checking documents of value
Methods and apparatus to provide haptic feedback
  Randomly Featured Patents
Ornamental garden cannon
Scaffolding module and method of erecting same
RFID tags and processes for producing RFID tags
Work management apparatus, picking carriage, work performance collection system, rework measurement system, workability management system, rework measurement measuring method, work performance
Cutting and transport cylinder in a winding device for winding material webs
Method for manufacturing oxide superconducting films via laser ablation followed by laser material processing
Rectilinear knitting machine
Brake apparatus with variable brake force for aerial cableways
Mass air flow estimation based on manifold absolute pressure
Wheel spider