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특허 상세정보

Wheelbarrow

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B62B-001/20   
미국특허분류(USC) 280/047.26 ; 280/653 ; 298/02
출원번호 US-0800045 (1997-02-14)
우선권정보 CA-2169578 (1996-02-15)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Seaby
인용정보 피인용 횟수 : 24  인용 특허 : 3
초록

Conventional wheelbarrow are difficult to steer, particularly when fully loaded. The wheelbarrow of the present invention provides a simple solution to this problem. The wheelbarrow includes a pair of L-shaped axles carrying wheels (or skis for winter use) rotatably mounted in vertical sleeves on the frame of the wheelbarrow. A crossbar on the front end of a pair of handles carries a shaft rotatable in cylindrical bushings on the frame. A linkage connects the front end of the shaft to levers on the vertical arms of the axles, so that rotation of the hand...

대표
청구항

[ We claim:] [1.] A wheelbarrow comprising:(a) frame means;(b) container means on said frame means for carrying a load;(c) axle means proximate a front end of said frame means rotatable around a vertical axis on said frame means;(d) wheel means rotatable on said axle means;(e) lever means on said axle means;(f) a pair of handles independent of and extending rearwardly from said frame means;(g) shaft means carried by said handles rotatable in said frame means, whereby said handles and said shaft means can be used to lift a rear end of said frame means; an...

이 특허를 인용한 특허 피인용횟수: 24

  1. Willett, Timothy C.. Adaptive wheeled carrier and transport device. USP2015089108653.
  2. Tanemura, Tetsuo. Capacitive sensing using non-integer excitation. USP20180710019122.
  3. Tomchak, Michael J.; Albert, Barry R.; Lupey, Mike. Collapsible wheelbarrow. USP2005086923469.
  4. Tomchak, Michael J.; Albert, Barry R.; Lupey, Mike. Collapsible wheelbarrow and associated method. USP2005026851701.
  5. Tomchak, Michael J.; Albert, Barry R.; Lupey, Mike. Collapsible wheelbarrow and associated method. USP2005036869098.
  6. Tomchak,Michael J.; Albert,Barry R.; Lupey,Mike. Collapsible wheelbarrow and associated method. USP2006016991251.
  7. Davis,Larry E.. Locking leveling support legs for wheelbarrow. USP2006127147234.
  8. Robinson, Kenneth I.; Robinson, Stephanie Dashiell. Motorized wheelbarrow. USP2012088235153.
  9. Roberson, Jeremy; Schwartz, Adam. Sensor device and method for estimating noise in a capacitive sensing device. USP2015119176633.
  10. Erickson, Thomas E. Steerable wheelbarrow. USP2013108550490.
  11. Erikson, Thomas L.. Steerable wheelbarrow. USP2015038985620.
  12. Beaudoin,Michel. Steering mechanism for wheelbarrow. USP2008017316413.
  13. Vandermeijden, Tom. System and method for determining user input using dual baseline modes. USP20190410254873.
  14. Volin, Dee. Unique five-device-in-one system comprising wheelbarrow, wheel harvest-bag trash-bag caddy, wheel tool-refreshment caddy, dump truck, and hand truck. USP2013098534682.
  15. Buttimer, Tony. Utility cart for transport of payloads. USP20180810053126.
  16. Stevens, George W.. Wheelbarrow configuration. USP2014038668210.
  17. Zimmerman, Felton. Wheelbarrow extension. USP200904D591022.
  18. Zimmerman, Felton. Wheelbarrow extension. USP200904D591023.
  19. Zimmerman,Felton. Wheelbarrow extension. USP200903D588323.
  20. Halsted, Charles William; Steinhobel, Brian Arthur; Westphal, Friedrich. Wheelbarrow frame member. USP2011090646040.
  21. Kraft, Dennis B.. Wheelbarrow leveling system. USP2014078783710.
  22. Garcia Guadalupe. Wheelbarrow rear wheel system. USP2001046220622.
  23. Bysiewicz, Katherine S.. Wheelbarrow sled system. USP2015028950758.
  24. Black,Charles. Wheelbarrow stand with tilt leveling mechanism. USP2008047354059.