Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Exposure method, exposure apparatus, and method for producing device
Method for transforming a single reactor line
Crowd validated internet document witnessing system
Apparatus and method for controlling semiconductor die warpage
Method of processing data and display apparatus for performing the method
Oscillator circuit which compensates for external voltage supply, temperature and process
Methods of preventing and treating viral infections by inhibiting the deISGylation activity of OTU domain-containing viral proteins
  Randomly Featured Patents
Method of detecting a welding voltage
Apparatus for separating a digital composite video signal into components
Racket for tennis and similar games
Dual handle inserting machine
Resectoscope electrode assembly with non-conductive bearing tube and method of making the same
Multiple container unit
Dispensing jar cover
Insecticidal N-substituted sulfoximines
Method to avoid malconnections with respect to voltage levels of electronic components of circuit boards during circuit board design
Specially configured deflection edge thrust reverser for jet engine