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특허 상세정보

Composite railroad crosstie

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E01B-021/04   
미국특허분류(USC) 238/029
출원번호 US-0190524 (1998-11-12)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Baker & Daniels
인용정보 피인용 횟수 : 27  인용 특허 : 10
초록

A railroad crosstie includes an outer casing made of a 50--50 mixture by volume of recycled high density polyethylene and crumb rubber from recycled tires. The outer casing includes an upper section and a lower section, which cooperate to define a cavity in which a beam or beams are installed. Each of the beams include an aperture below the rail supporting areas of the crosstie and an insert of the same composite material of which the outer casing is made is installed within the beams below the rail support areas. A flowable concrete mixture fills the ca...

대표
청구항

[ What is claimed is:] [1.] Railroad crosstie having a pair of rail support areas spaced longitudinally along said crosstie for supporting rails comprising an outer casing defining a longitudinally extending cavity therein, said outer casing being made of a material sufficiently yieldable to permit fasteners for holding said rails on the support areas to be driven through the casing and into said cavity, a beam extending longitudinally within said cavity and extending beneath said rail support areas, said beam defining a chamber therewithin, inserts moun...

이 특허를 인용한 특허 피인용횟수: 27

  1. Roberts, Jr., Richard W.. Bathtub/shower tray support. USP2016039271610.
  2. Roberts, Richard W.. Bathtub/shower tray support. USP20181110130220.
  3. De Lisi, Giovanni Maria. Composite railway sleeper. USP2017079695554.
  4. Cadwell,Charles E; Fischer,Carl. Composite telephone pole. USP2008097426807.
  5. Roberts, Richard W.. In-situ foam core dielectrically-resistant systems and method of manufacture. USP2014048708177.
  6. Roberts, Richard W.. In-situ foam core structural articles and methods of manufacture of profiles. USP2015089102086.
  7. Roberts, Richard W.. In-situ foam core structural articles and system for forming. USP2017069688046.
  8. Roberts, Jr., Richard W.. In-situ foam core structural energy management system and method of manufacture. USP2014098840819.
  9. Roberts, Richard W.. In-situ foam core vehicle seating system and method of manufacture. USP2015079073462.
  10. Lane, Kevin K.; Lane, legal representative, Dustin K.; Carothers, Paul A.; Lane, Ryan K.; Faino, Ryan P.. Lightweight, composite structural railroad ties. USP2009097592059.
  11. Robinson, Timothy P.. Method and apparatus for a railroad crosstie made from used tires. USP2004036708896.
  12. Mospan, John W.; Urmson, Jr., W. Thomas. Notched tie plate insulator. USP2011108042747.
  13. Roberts, Jr., Richard W.. Packaging component, method of use, and method of manufacture. USP2013128596027.
  14. Chow, Clark. Paving block formed of rubber crumb and a method of manufacturing the same. USP2015079079347.
  15. Chow, Clark. Paving block formed of rubber crumb and a method of manufacturing the same. USP2016049315952.
  16. Chow, Clark. Paving block formed of rubber crumb and a method of manufacturing the same. USP2012108282311.
  17. Nosker, Thomas; Lynch, Jennifer. Polymer based railroad tie shaped to reduce center bounding. USP2015099121138.
  18. Cadwell, Charles Edward. Railroad cross tie and method of manufacture. USP2011017866569.
  19. Roberts, Jr., Richard W.. Recyclable plastic structural articles and method of manufacture. USP2013018342420.
  20. Roberts, Jr., Richard W.. Recyclable plastic structural articles and method of manufacture. USP2016059346237.
  21. Roberts, Richard W.. Recyclable plastic structural articles and method of manufacture. USP20190210207606.
  22. Hansen, Steve. Recycled rubber railroad crossties. USP2004076766963.
  23. Roberts, Jr., Richard W.. Structural plastic articles, method of use, and methods of manufacture. USP2016039272484.
  24. Djerf, Torben; Eisenhut, John D.. Structure for railroad ties having data acquisition, processing and transmission means. USP2017019556564.
  25. Djerf, Torben; Eisenhut, John D.. Structure for railroad ties having data acquisition, processing and transmission means. USP2014058727228.
  26. Urmson, Jr.,William T.; Mospan,John W.; Downey,John M.. Tie plate. USP2007087261244.
  27. Weisbeck, Jeffrey N.. Vibration damping apparatus. USP2016029249852.