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특허 상세정보

Joint for foldable aluminum ladders

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16D-001/00   
미국특허분류(USC) 403/24 ; 403/96 ; 182/163 ; 182/24
출원번호 US-0909595 (1986-09-22)
발명자 / 주소
인용정보 피인용 횟수 : 27  인용 특허 : 2

A joint for foldable aluminum ladders comprising a first base, a second base, a control plate and a selecting means. The second base has a middle plate inserted between two parallel plates which are connected at the end of the first base. The control plate is inserted between one of the parallel plates and the middle plate. The parallel plates, middle plate and control plate each have a central hole to allow a sleeve to be inserted therethrough. The parallel plates, middle plate and control plate also have apertures which lay some distance along the edge...


A joint for foldable aluminum ladders comprising: a first base, having a hollow leg connected to a leg of a ladder and two parallel plates connected at the end of said hollow leg, each of said two parallel plates having a central hole and an aperture proximate to the edge thereof; a second base, having a hollow leg connected to a leg of said ladder and a middle plate connected at the end of the hollow leg, said second base being formed of a metal sheet having two rivets inserted through said middle plate to joint two sides of said middle plate, said midd...

이 특허를 인용한 특허 피인용횟수: 27

  1. Yuen Haison (2-1 ; Jinlon Rd ; Jeo-Ay Village ; Yen-Pu Shian Pintung Hsien TWX). Adjustable folding ladder. USP1989064842098.
  2. Tai, Kuang-Cheng. Adjustable inclined angle structure for computers. USP2003116644611.
  3. Rauschenberger Jorg,DEX. Connection between a ladder side rail and a hinged arm of a ladder hinge. USP1999045890561.
  4. Simpson, Dennis. Convertible ladder. USP2005056886659.
  5. Simpson, Dennis; McMunn, Ryan. Convertible ladder. USP2005026857503.
  6. Simpson,Dennis; McMunn,Ryan. Convertible ladder. USP2007097264082.
  7. Wu, Chung-Sen. Folding chair. USP2003046547321.
  8. Johnson, Mark. Folding scooter. USP2013088500147.
  9. Stone Mark James,AUX. Hinge and ladder. USP1998075775460.
  10. Lee, Chan Bok. Hinge for collapsible ladders. USP2004036711780.
  11. Kelly, Joseph E.. Infant seat with adjustable handle. USP2003056561577.
  12. Foley, Joseph P.; Williams, Benjamin P.. Integrated ladder tray hook. USP201811D833643.
  13. Burbrink,Philip W.; Brown,Trevor S.. Lockable hinge. USP2006087093321.
  14. Leng,Lu Hao. Lockable ladder hinge. USP2006117140072.
  15. Jenks, John E.. Locking hinge system. USP2003076591453.
  16. Wunderlich Arthur K. (221 Green Ave. Lansdowne PA 19050). P.V.C. swivel beach chair. USP1989064842335.
  17. Yoo Hoe G. (Deungchon-Dong Kangseu-ku ; Seoul KRX). Positioning joint for a folding ladder. USP1990014890950.
  18. Hackney, Michael P.. Rotating bracket assembly for collapsible and permanent building-frame construction. USP2010097798461.
  19. Byrne, Emily; Ostergaard, Collin; Herlitz, Todd. Scooter. USP201605D756465.
  20. Eckert, Cameron; Herlitz, Todd. Scooter. USP201508D736861.
  21. Cheng Chin-chang (No. 20 ; Lane 327 ; Sec. 2 ; Chung Shan Rd. Chung Ho City ; Taipei Hsien TWX). Setting device for a joint. USP1997045624199.
  22. Lee, Chang Su. Stand for flat-panel display. USP2009047520480.
  23. Lee, Chang Su. Stand for flat-panel display. USP2011098025265.
  24. Simpson, Dennis D.; Skubic, Jeff D.; Polk, III, Louis F.; Ness, Jason J.. Step stool. USP201407D710031.
  25. Parker, Thomas W.; Fiumefreddo, John J.. Step stool, hinge and method. USP2013018341806.
  26. Mendenhall,Andrew; Dorsey,Michael C.; Andrews,Jason S.; Kain,James M.; Glover,Richard. Top rail lock for playyard. USP2006057043779.
  27. Shenton ; Jr. John M. ; Shenton ; III John M.. Truck mounted awning apparatus. USP2001036202664.