Resources Contact Us Home
Apparatus and method of railroad tie replacement

Image Number 5 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
Moving structure and micro-mirror device using the same
Provision of downlink packet access services to user equipment in spread spectrum communication network
Communication terminal device, and recording medium
Lid for a container
SONOS stack with split nitride memory layer
Integrated circuit packaging system with laser hole and method of manufacture thereof
Repeating frame battery with joining of cell tabs via welded-on male and female slip-fit connectors
  Randomly Featured Patents
Interconnected one-piece desk unit
Device for adjusting the reclining force in office chair mechanisms
Locking device for securing a rod-shaped element in a holding element connected to a shank
Surface acoustic wave sensor device and method of controlling liquid using the same
Method for connecting modems
Fiber-reinforced polymer molded body
Motor vehicle having a load carrying post
Method of providing services for users and a service processing system for the same
Antenna elements for a missile