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Wheelbarrow

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B62B-003/02   
미국특허분류(USC) 280/4718 ; 280/4720 ; 280/4722 ; 280/47315
출원번호 US-0134483 (1987-12-17)
발명자 / 주소
인용정보 피인용 횟수 : 15  인용 특허 : 2
초록

An improved wheelbarrow is disclosed which has a body with a foldable rear section and stable front section, a rack, and front wheels fixed on both ends of a wheel axle. The wheel axle is supported at both its sides with a flexing case which provides elastic movement to the wheel axle by means of a spring and a pushing plate. A braking device for the front wheels is also disclosed, as well as auxiliary rear wheels. The wheelbarrow has three different configuration and is capable of safe movement while reducing the amount of force necessary for its use.

대표
청구항
▼

An improved wheelbarrow capable of being used as a two-wheeled and a four-wheeled device which comprises: a body having a front section, an axis bar and a rear section, the rear sections having a handle including pipes; the front section including pipes, two front wheels and two rear wheels each rotatably mounted on the front section pipes, and braking devices for the two front wheels; the pipes of the front and rear sections each having one end pivotally attached to the axis bar, a folding device for permitting the push handle of the front section to pi...

이 특허에 인용된 특허 (2)

  1. Benedetto ; Jr. Alfred P. (P.O. Box 122 Fremont NH 03040). Modular hand cart. USP1986054588197.
  2. Alessio, Lorenzo E.. Multipurpose hand truck with movable wheels. USP1985124561674.

이 특허를 인용한 특허 피인용횟수: 15

  1. Allsop,Robert J.; Bernstein,William M.; Binder,John J.; Cunningham,Tim; Degentesh,Drew T.; Juhn,Dale R.; Kaintz,Ryan C.; Mather,Brian D.; Perkins,Jeffrey A.; Schroeder,Joseph G.; Space,Joshua T.; Stygar,Christopher M.; Yorko,Dawn S.. Box unloader. USP200901D585622.
  2. Fred E. Meabon. Convertible hand dolly and cart. USP2002076419244.
  3. Brown,Deborah. Convertible luggage device. USP2006057051853.
  4. Goldszer, Jacob. Convertible table and cargo cart. USP200909D599972.
  5. Van Ligten Robert Hermanus,CHX. Hand cart for the transport of persons and luggage. USP1998105820146.
  6. Tsai, Haiming. Hand truck. USP2009107600765.
  7. Kelley Earnest. Handy carrier. USP2000046053515.
  8. Weck David ; Frey Erwin M.. Household cart. USP2001056224072.
  9. David Weck ; Erwin M. Frey. Household cart and method of using same. USP2002046375202.
  10. Berthiaume William ; Law Bruce W. ; Kukla Kenneth A.. Multiple use hand trucks fitted with detachable bottled water carrier tray and methods of their construction and use. USP2001106302414.
  11. Wyse, Steven J.; Johnston, Brent A.. Powered cart. USP201603D752834.
  12. Wyse, Steven J.; Johnston, Brent A.. Powered wagon. USP201603D752307.
  13. Wyse, Steven J.; Johnston, Brent A.. Powered wheelbarrow. USP201603D752835.
  14. Durham, Stephen P.. Vertically folding hand truck and methods of its operation and construction. USP2003086601859.
  15. Hoffarth Richard L. ; Hoffarth Mark J.. Wheelbarrow handles. USP1998095810375.

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