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
Active pellet without chemical additives
Native NAD-dependent GAPDH replaced with NADP-dependent GAPDH plus NADK
Secure access to customer log data in a multi-tenant environment
Methods of producing the membranes and the uses of membranes as battery separator films
Device chip carriers, modules, and methods of forming thereof
Method and CTDevice for computer tomographic spiral scanning of a patient
Vehicle headlight
  Randomly Featured Patents
Method and device for the disintegration of especially inorganic materials
Container rim with rounded corners
Orthopaedic bone plate
Method for treating wastewater or produced water
Method and apparatus for using monochrome images to form a color image
Cash replacement system including an encoded card and card acceptor
Substrate with bass camouflage pattern
Radio remote control unit
Convective attenuation flowmeter