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
People engine optimization
System of providing an internet web site that assists medical professionals draft a letter of medical necessity or other documentation for transmission to a third party payer on behalf of a pa
Polymer composites having highly dispersed carbon nanotubes
Preservation of liquid foods
Automated gate system
  Randomly Featured Patents
Intake passage structure for internal combustion engine, and engine and vehicle incorporating same
Diaminotriazoles useful as inhibitors of protein kinases
Phosphate ceramic hard tiles
After-burner heated catalyst system and associated control circuit and method
Pipe coupling
Medical instrument, medical material, and method for production of the medical instrument and medical material
Method and apparatus for telecommunications signal processing and switching
Hum reduction circuit
Halogenated biaryl heterocyclic compounds and methods of making and using the same
Head retraction circuit