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특허 상세정보

Hand truck attachment for a ladder

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B62B-001/04   
미국특허분류(USC) 280/645 ; 280/030 ; 280/047.29 ; 280/643 ; 182/021
출원번호 US-0561988 (2000-05-02)
발명자 / 주소
대리인 / 주소
    Birch, Stewart, Kolasch & Birch, LLP
인용정보 피인용 횟수 : 20  인용 특허 : 16
초록

A device for attaching to a ladder allows the ladder to function as a hand truck. The device includes a pair of retractable wheels. The retractable wheels can be stored away inside an outer profile of an opened or closed stepladder, so that the wheels do not interfere with a user when the ladder is opened and do not take up space when the ladder is closed. The device may also include a retractable carry platform for holding loads when the ladder is used as a hand truck. A reverse side of the carry platform can serve as a paint bucket support or work surf...

대표
청구항

[ What is claimed is:] [1.]1. A combination comprising:a ladder including a plurality of steps, a first side rail and a second side rail;a base attached to at least one of said first or second side rails; andan assembly attached to said base proximate a top end of said ladder, said assembly including: a pivotable linkage, said pivotable linkage being pivotable between a first position and a second position relative to said base, and at least one wheel mounted to said pivotable linkage, wherein said at least one wheel is disposed between said first and se...

이 특허에 인용된 특허 (16)

  1. Tornabene Dean ; Perez Charles. Combination hand truck, stepladder and basket carrier. USP2001016173811.
  2. Purkapile Emerson J. (Chicago IL). Combination ladder and hand truck. USP1990064934485.
  3. Ast Dale A. (Wichita KS). Combination stepladder and hand truck apparatus. USP1985014494626.
  4. Murray Douglas J. (9450 SW. Lehman St. Portland OR 97223). Combination stepladder and load lifting apparatus. USP1981034258826.
  5. Brice John Nigel,CAX ITX V4A 1Y8. Combination stepladder/handtruck apparatus. USP1998115836595.
  6. Tarran ; Phil Keith. Combined hand truck and ladder. USP1978084106590.
  7. Bjerkgard Bjorn (Surrey CA). Convertible ladder-carrier vehicle assembly. USP1977034009762.
  8. Brookes Malcolm J. (30 E. 68th St. New York NY 10021) Sheridan James A. (Box 295-A ; Rte. 1 Englishtown NJ 07726) Spranger Douglas M. (23 Fiske Place Brooklyn NY 11215). Ladder caddy. USP1977094049283.
  9. DiSario Peter. Ladder caddy. USP1998035727799.
  10. Giezendanner Ruedi (Rosenstrasse 16 CH-6010 Kriens CHX). Ladder formed as a multiple-purpose device. USP1984054448282.
  11. Kato Chizuo (No. 25-12 ; 2-chome Higashi-Ohi ; Shinagawa-ku ; Tokyo-to JPX). Mounting means for decorative device. USP1979094166601.
  12. Preston Keith (88 Thornhill Road Streetly ; Sutton Coldfield GB2) Preece Michael J. (3 Bellsmoor Road Hill Top ; West Bromwich ; West Midlands GB2). Portable carrier device for temporary attachment to a support. USP1987064676468.
  13. Roudebush H. Richard. Step stool and dolly apparatus. USP2000126158749.
  14. Guidara Orlando (79 Livingstone Ave. Beverly MA 01915). Stepladder dolly. USP1976053954155.
  15. Wilson James R. (P.O. Box 263 Looper TX 75432). Stepladder dolly. USP1995015382032.
  16. Goetz Kurt A. (Aumuehle Container Terminal D-8700 Wurzburg DEX). Universal clamping fixture for baby carriage umbrellas. USP1990044919379.

이 특허를 인용한 특허 피인용횟수: 20

  1. Stewart, Craig. Climbing system. USP2017119810023.
  2. Tornabene, Dean; Babkes, Mitchell H.; Howell, Henry J.. Combination hand truck, step ladder and dolly. USP2005046880835.
  3. Clark, Michael C.. Device having pivotable wheel mechanism. USP2005066901783.
  4. Russell, Brian; Moss, N. Ryan. Elevated working platform and related methods. USP20181110138679.
  5. Brahier,Ken. Folding workbench and dolly combination. USP2006057051837.
  6. Babkes, Mitchell H.; Fitzburgh, Brian; Ellis, Mark. Hinge system for combination hand truck, step ladder and dolly device. USP2005046877586.
  7. Gannon, Donald C.. Ladder assist wheel. USP2003076585084.
  8. Abraham, Richard J.. Ladder transport system. USP2003076592134.
  9. Abraham,Richard J.. Ladder transport system. USP2008047350621.
  10. Moss,N. Ryan; Bowers,Jack W.. Ladder wheel pair. USP200801D560001.
  11. Honeycutt, Robert W.. Mobile access unit and cage. USP2018029902577.
  12. Reyes, Eutimio. Mobile ladder support assembly. USP2017019556675.
  13. Gross,Gary R.. Portable ladder base workstation. USP2007017156204.
  14. Geiselman, III, Grover J.. Space saving ladder. USP2015069068394.
  15. Babkes,Mitchell H.; Tornabene,Dean. Step for a multi-use move, lift and support device. USP200606D524008.
  16. Babkes, Mitchell H.; Tornabene, Dean. Support plate. USP200407D492829.
  17. Babkes, Mitchell H.; Tornabene, Dean. Tray for a dolly. USP200506D506588.
  18. Feik,Frederick G.; Clark,Bruce D.. Wheel attachment for ladder. USP2006057036631.
  19. Spruth, Michael Paul; Allen, Dan. Wheeled ladder caddy. USP2017099751546.
  20. Boyd, Mark Lockyer. Workbench. USP2015129221168.