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특허 상세정보

Ladder assist wheel

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E06C-005/00    E06C-005/32   
미국특허분류(USC) 182/129; 182/127
출원번호 US-0951647 (2001-09-12)
발명자 / 주소
대리인 / 주소
    Sturm & Fix LLP
인용정보 피인용 횟수 : 6  인용 특허 : 18
초록

A ladder assist wheel attached to the outer face of one of the ladder side rails. The wheel extends out from the outer face and rotates on an axis that is parallel to the plane of the outer face. A reinforcing plate is placed in contact with the inner face of the side rail and is operably attached to the wheel. The wheel is preferably positioned adjacent the bottom end of the side rail so that the ladder may be transported on its side by grasping the top end with one hand and allowing the wheel to contact and roll along the ground. For dual access foldin...

대표
청구항

A ladder assist wheel attached to the outer face of one of the ladder side rails. The wheel extends out from the outer face and rotates on an axis that is parallel to the plane of the outer face. A reinforcing plate is placed in contact with the inner face of the side rail and is operably attached to the wheel. The wheel is preferably positioned adjacent the bottom end of the side rail so that the ladder may be transported on its side by grasping the top end with one hand and allowing the wheel to contact and roll along the ground. For dual access foldin...

이 특허에 인용된 특허 (18)

  1. Kuperman Aryeh (15/3 Havradim St. Givat Amos ; Haifa ILX 20306). Ambulatory ladder. USP1990034911263.
  2. Murray Douglas J. (9450 SW. Lehman St. Portland OR 97223). Combination stepladder and load lifting apparatus. USP1981034258826.
  3. Haaser Gregory John. Hand truck attachment for a ladder. USP2001126328330.
  4. Gugel Leslie H. (161 E. Hampton Way Jupiter FL 33458) Gugel Joyce A. (161 E. Hampton Way Jupiter FL 33458). Ladder. USP1996125584357.
  5. Lurry Percell C. (Aylett VA 23009). Ladder attachment. USP1982014311207.
  6. Oling Morris (62 Niagara Rd. Kitchener CAX N2B 1T2). Ladder attachment. USP1986044580660.
  7. Giezendanner Ruedi (Rosenstrasse 16 CH-6010 Kriens CHX). Ladder formed as a multiple-purpose device. USP1984054448282.
  8. Swanick ; Jr. Paul E.. Ladder having movable ladder support. USP2001086276490.
  9. Hart Russell J. (740 S. Waverly Dearborn MI 48124). Ladder positioning and holding structure. USP1983084397375.
  10. Trail Thomas E. (803 4th St. Radford VA 24141). Ladder ridge hook and stand off. USP1990074938312.
  11. Bendickson Roy B. (Greenville PA) Smith Jay P. (Greenville PA). Ladder system including a caster bracket and method of forming. USP1997085653306.
  12. Bambrough Harry M. (925 Hillcrest La. Oregon WI 53575). Ladder-based cart apparatus. USP1996105566780.
  13. Walker Bret T. (8414 Rocky Path San Antonio TX 78250). Portable hunting stand and game carrier. USP1994025282520.
  14. Anderson Austin (R.R. 1 ; Box 467 Shelbyville IN 46176). Roller accessory for ladder. USP1988074754843.
  15. Ramsey Gregory D. ; Ramsey Jeffrey R.. Roller attachment for ladders. USP1998115833028.
  16. Guidara Orlando (79 Livingstone Ave. Beverly MA 01915). Stepladder dolly. USP1976053954155.
  17. Swiderski Paul R.. Support frame assembly. USP2000026026931.
  18. Kerr James F. (Croswell MI). Wheeled ladder. USP1992015082086.