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특허 상세정보

Positioning joint for folding ladders

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) E05D-011/10   
미국특허분류(USC) 403/92 ; 403/93 ; 16/329 ; 16/344
출원번호 US-0894049 (1986-08-07)
우선권정보 KR-0002527 (1986-03-04)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 31  인용 특허 : 6
초록

A positioning joint for a folding ladder comprising a first joint member, a second joint member disposed between the first joint member, and a hollow shaft inserted into central holes of the first and second joint members. The joint further includes a turning plate disposed on an inner wall of a first disc portion of the first joint member, a crank-shaped strip, and a spring mounted around the hollow shaft. A push knob is inserted into the hollow shaft, and a pin is inserted into a pair of axially elongated holes in the hollow shaft and into a pin hole i...

대표
청구항

A positioning joint for a folding ladder comprising a first joint member having a tubular portion and two spaced first and second disc portions each having a central bore, a second joint member having a tubular portion and a disc portion with a central bore, the disc portion of the second joint member being disposed between the disc portions of the first joint member and comprising first and second sidewalls, a hollow shaft inserted into the central bores of the disc portions of the first and second joint members, a turning plate between an inner wall of...

이 특허를 인용한 특허 피인용횟수: 31

  1. Kurt J. Fugman ; James L. Walke. Adjustable corner fitting. USP2002116478499.
  2. Hsieh, Wu-Hong. Adjustable device with a musical keyboard stand. USP2005086923416.
  3. Yuen Haison (2-1 ; Jinlon Rd ; Jeo-Ay Village ; Yen-Pu Shian Pintung Hsien TWX). Adjustable folding ladder. USP1989064842098.
  4. Wiley Robert A. (Millington MI) Gay Dwight S. (Millington MI) Larkin Michael J. (Millington MI). Adjustable rotary locking and unlocking apparatus. USP1997115689999.
  5. Gard, Paul D.; Davis, Barton Brett. Adjustable rotary locking and unlocking device. USP2009127631575.
  6. Slasinski Michael. Angularly adjustable coupling. USP2001066244779.
  7. Hotes, Douglas T.. Collapsible frame for a portable shelter. USP2016089410343.
  8. Hotes, Douglas T.; Hotes, John M.. Collapsible frame for a shelter. USP2015089097034.
  9. Kim Myung H. (34 Rhodes St. New Hyde Park NY 11040). Combination ladder and height adjustable scaffold. USP1990084951780.
  10. Simpson, Dennis. Convertible ladder. USP2005056886659.
  11. Simpson, Dennis; McMunn, Ryan. Convertible ladder. USP2005026857503.
  12. Simpson,Dennis; McMunn,Ryan. Convertible ladder. USP2007097264082.
  13. Wu, Yao-Chuan. Foldable bracket of a chair. USP2014038668257.
  14. Johansson, Jörgen; André, Helena; Ludwigsson, Kent. Folding arrangement for a handle assembly of a walk-behind power tool. USP2015079078395.
  15. Yuen Haison (2-1 ; Jinlon Rd. Joe-Ay Village ; Yen-Pu Shian ; Pintung Hsien TWX). Folding ladder. USP1990084947959.
  16. Lee, Chan Bok. Hinge for collapsible ladders. USP2004036711780.
  17. Park, Jae Yun; Park, Heung Chul. Hinge for foldable ladders. USP2004026688797.
  18. Lee,Sang Kyu. Hinge for folding ladders. USP2006057047597.
  19. Fuchs, Gerhard; Spindelbalker, Rupert. Hinge joint for eyeglasses. USP2004036711779.
  20. Fanuzzi John M. (Hwy. 89 Seven Point Ranch Emigrant MT 59027). Indexing hinge. USP1996125586363.
  21. Foley, Joseph P.; Williams, Benjamin P.. Integrated ladder tray hook. USP201811D833643.
  22. Weiss,Yoram. Ladder assemblies. USP2008097424933.
  23. Peng Ching L. (No. 11 ; Alley 26 ; Lane 207 ; Tung Shan Street Taichung City TWX). Ladder positioning mechanism. USP1989024805737.
  24. Burbrink,Philip W.; Brown,Trevor S.. Lockable hinge. USP2006087093321.
  25. Leng,Lu Hao. Lockable ladder hinge. USP2006117140072.
  26. Callahan Peter. Locking hub. USP2000076086284.
  27. Lee,Sang Jin. Mobile terminal. USP2006057047053.
  28. Palmer Norwin (5882 Tuttle Creek Blvd. Manhattan KS 66502). Modular connector system for tubular structural members. USP1997095661942.
  29. Yeh Chin-Wen,TWX. Pulling device for foldable ladder joint. USP1999115992566.
  30. Tastad, Gregory J.. Releasable display mounting system and method. USP2009067540806.
  31. Simpson, Dennis D.; Skubic, Jeff D.; Polk, III, Louis F.; Ness, Jason J.. Step stool. USP201407D710031.