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
Method and apparatus for charging a power pack of a portable electronic device
Video reproducing apparatus and video reproducing method
Solar powered charging shelter and system and method thereof
Flame-proofed thermoplastic compositions
Method and apparatus for receiving signals in a MIMO system with multiple channel encoders
Image correction method
Method of preparing highly fluorinated carboxylic acids and their salts
  Randomly Featured Patents
Stabilization of aminosteroids for topical ophthalmic and other applications
.beta.1,3-galactosyltransferase polypeptides from the LOS locus of C. jejuni
Door security latch opener and method of using same
Light emitting diode
Air filter arrangement; assembly; and, methods
Operating mechanism for reciprocating component
Air cooling system for electric drive machine
High precision height comparator apparatus
Apparatus and method for detection and correction of denormal speculative floating point operand
Skin compositions and methods of use thereof