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특허 상세정보

Four wheeled hand truck

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B62B-003/02   
미국특허분류(USC) 280/39 ; 280/641 ; 280/4313
출원번호 US-0071320 (1979-08-30)
발명자 / 주소
인용정보 피인용 횟수 : 34  인용 특허 : 0
초록

A hand truck having a platform; a pair of wheel-connecting bars rotatably attaching to the platform; a plurality of wheels connecting to the bars, at least two of the wheels being rotatable thereon; and a handle member pivotally connecting at two points on an end of the platform and circumscribing three sides of the perimeter of the platform when the handle member is in a closed position. A handle release and locking means attaches to the platform and locks the handle member either in an open or in a closed position. The wheels fold up underneath the pla...

대표
청구항

A hand truck comprising a platform; a pair of wheel-connecting bars rotatably attaching to the platform; a plurality of wheels connecting to the bars, at least two of said wheels being rotatable thereon; a handle member pivotally connecting at two points on an end of said platform and circumscribing three sides of the perimeter of the platform when the handle member is in a closed position; a first gear means connected to the end of said wheel-connecting bars; a second gear means meshing with the first gear means and connecting to the handle member in pr...

이 특허를 인용한 특허 피인용횟수: 34

  1. Leimgruber John (4822 Seventh Ave. Temple PA 19560). Carriage device. USP1987044659096.
  2. Hanaoka Hiroshi (Tokyo JPX). Cart. USP1987044655466.
  3. Nussbaum, Robert Guy; Thompson, Benjamin Joel; Howe, Stephen Roland. Cart and dolly handle with stacking position. USP20180910065666.
  4. Abel,Helmut. Cart with foldable wheels and center pole. USP2006107118115.
  5. Kennemer, Brian; Rager, Ty. Cart with folding support. USP2016079394017.
  6. Bernal, Andres; Buttazzoni, Luca. Castor assembly for a modular dolly. USP2014108850656.
  7. Bernal, Andres; Buttazzoni, Luca. Castor assembly for modular dolly and kit. USP2016059340222.
  8. Buttazzoni, Luca; Bernal, Andres. Castor supported dolly assembly capable of being made from lightweight materials and of being used as a pallet assembly. USP2016089409585.
  9. Bernal, Andres; Buttazoni, Luca. Castor supported dolly assembly capable of being made from lightweight materials and so as to be disposable or severable. USP2014118876145.
  10. Buttazzoni, Luca; Bernal, Andres. Castor supported dolly assembly capable of being made from lightweight materials and so as to be disposable or severable. USP2014118876127.
  11. Wang, Wen-Fa; Deng, Jian-Wen; Chen, Jia-Chao. Collapsible platform truck. USP2015038979098.
  12. Favorito, Anthony; Ogie, Samuel. Convertible skateboard/scooter. USP2003026520516.
  13. Herbault, Patrick; Marques, Frédéric; Saulnier, Fabien. Convertible transport trolley having a pair of fold-away legs and simultaneously fold-away wheels. USP2017059643628.
  14. Warner, Samuel Jerome. Dolling plate for pallet jack. USP201704D784648.
  15. Jian, Shikun. Flat platform cart with collapsible casters. USP2010087784816.
  16. Jian, Shikun. Flatbed trolley with casters capable of not folding when handle rotates. USP20181010086860.
  17. Grundvig, Willis; Davis, Gertrude. Foldable valet cart. USP2015018925957.
  18. Ritucci, Louis N.; Patterson, Joseph K.; Barker, Donald. Folding wagon/cart. USP2005016845991.
  19. Dukes,Stephen A.. Hand truck. USP200805D570068.
  20. Buttazzoni, Luca. Lightweight dolly assembly. USP2014128910955.
  21. Crawford, Robert S.. Medical device carrier. USP2005116964422.
  22. Diaz, Jose Mario. Mobile cart with retractable wheel assembly. USP2016109469321.
  23. Buttazzoni, Luca; Bernal, Andres. Modular dolly kit. USP2014048684372.
  24. Thuma, Michael; Kopp, Robert G.; Vogler, Michael R.. Platform cart. USP201705D787770.
  25. Thuma, Michael; Kopp, Robert G.; Vogler, Michael R.. Platform cart. USP201702D779145.
  26. Golichowski Gary D. ; Presnell Donald C.. Platform truck with multi-positionable handle. USP2000026024376.
  27. Frank, Roy W.. Retractable golf bag wheel assembly. USP2017059636557.
  28. Buttazzoni, Luca; Bernal, Andres. Self-contained dolly assembly. USP2017029566993.
  29. Buttazzoni, Luca; Bernal, Andres. Self-contained dolly assembly. USP2015049010798.
  30. Konsant, Anthony N.. Storage carts. USP2010127850020.
  31. Penner, Marvin; Penner, Norman; Penner, Abe. Storage chest for tools or the like. USP2014018636327.
  32. Liao, Gordon. Three-fold three-wheel golf bag cart folding device. USP201609RE46150.
  33. Suess, Wolfgang. Transport cart that can be stored in a space-saving manner for equipping an aircraft galley. USP2015089108661.
  34. Umbro, Gerald; Kavanaugh, Rosemary; Umbro, Joseph; Tessel, David. Wheeled container carrier. USP2014078789836.