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특허 상세정보

Cart having extensible auxiliary wheels

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) A61G-001/02    B62B-003/02   
미국특허분류(USC) 296/20 ; 280/640
출원번호 US-0875994 (1978-02-08)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 40  인용 특허 : 0

A cart having a frame, four depending legs adapted to swing rearwardly to a collapsed position, releasable means bracing said legs, an operator for actuating said releasable means, a platform mounted on said frame adapted to move between an extended and a retracted position, auxiliary wheels on the forward end of said platform, and a lock for maintaining said platform in either of its positions.


A cart comprising in combination: a generally horizontal frame, a platform mounted on said frame for supporting an article, forward and rearward legs depending from said frame and having wheels at their lower ends, auxiliary wheels mounted at the forward end of said frame, said auxiliary wheels normally disposed adjacent to said forward legs, means mounting said auxiliary wheels to said frame to permit said auxiliary wheels to be slidably projected a substantial distance forward of said forward legs, releasable means normally fixing said legs in perpendi...

이 특허를 인용한 특허 피인용횟수: 40

  1. Reed, Jaime C.; Krieger, Jeffrey J.; Seizer, Richard T.; Bhend, Shawn G.; Sulik, Jarod M.. Ambulance cot system. USP2011118051513.
  2. Reed,Jaime C.; Krieger,Jeffrey J.; Seizer,Richard T.; Bhend,Shawn G.; Sulik,Jarod M.. Ambulance cot system. USP2008067389552.
  3. Lambarth, Clifford E.. Ambulance cot with pinch safety feature. USP2009067540047.
  4. Lambarth, Clifford E.. Ambulance cot with pinch safety feature. USP201405RE44884.
  5. Flynn, Jeffrey T.; High, Christopher S.; Taylor, Jerry L.. Ambulance stretcher with improved height adjustment feature. USP2003036526611.
  6. Jeffrey T. Flynn ; Christopher S. High ; Jerry L. Taylor. Ambulance stretcher with improved height adjustment feature. USP2002056389623.
  7. Stankevitz, Diane. Carriage assembly. USP2016079399476.
  8. Stollenwerk Joachim (Cologne DEX). Carriage for an ambulance stretcher. USP1990054921295.
  9. Magill, Brian Michael; Oz, Kemal Burc. Caster. USP2011070641612.
  10. Burchi, Shawn C.. Child carrier folding cart. USP2015038967657.
  11. Roman Gregory S.. Collapsible carpentry work station and push cart combination. USP1999015863052.
  12. Katz, Amir. Collapsible clamping work table. USP2009097588255.
  13. Hunter, Nancy E.. Collapsible shopping cart device. USP2013048408581.
  14. Miller,Mark E.; Miller,Joseph C.. Collapsible support structure. USP2006067055847.
  15. Al-Toukhi Mazen. Collapsible utility cart for use with automobile trunks. USP2000046045150.
  16. Papendick Gerd R.,CAX. Expandable painting wagon. USP1999035879021.
  17. Papendick Gerd R.,CAX. Expandable painting wagon. USP1998065772233.
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  19. Liu, Chia-Sheng; Chen, Chen-Yuan. Folding support for table machine. USP2010037681893.
  20. Lindner, Perry. High/low bed and leg assembly for raising and lowering the high/low bed. USP2009127631379.
  21. Green Thomas F. (R.R. #1 ; Box 66B Council Bluffs IA 51501). Leverage lifting cart. USP1990044919442.
  22. Johnson,Michael Karl. Low profile hospital bed. USP2008027334277.
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  24. Arnold, Abe; Benedict, William Harry. Method for weighing an ambulance cot by supporting it on a scale by two wheels and a kickstand. USP2009117612301.
  25. Chinn, Robert. Multi-purpose roll-in emergency cot. USP2014058714612.
  26. Ferneau, Richard Henry; Smith, Bret William; Benedict, William Harry; VanDyne, Eugene. Multiple level roll-in cot. USP2004036701545.
  27. Ferneau,Richard Henry; Benedict,William Harry; Van Dyne,Eugene; Bourgraf,Elroy Edwin; Pollock,Irvin. Multiple level roll-in cot. USP2007127302718.
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  29. Chisholm,John; Tsung,Shawn; Carrolo,Paulo. Portable collapsible stand. USP2007087255355.
  30. Ferragonio, Joseph R.. Portable tool box. USP2016089415503.
  31. Broadley, Gavin Lee; Cambridge, Alan Raymond. Roll-in cot. USP2009127631373.
  32. Broadley,Gavin Lee; Cambridge,Alan Raymond. Roll-in cot. USP2008097424758.
  33. Hedrick, Michael C.. Saw dolly and stand. USP2005016837501.
  34. Gines Roberto. Self-retracting cart for use in the cargo bay of a sport utility vehicle. USP2000066070899.
  35. Dobrachinski, Gleid Elaine. Shopping cart designed for vehicle trunks. USP2013098540273.
  36. Moster, Chaim. Shopping cart with assembly for vehicle storage. USP2012128333404.
  37. Holmes,David A.. Stretcher carrier. USP2006057044496.
  38. Liu,Chia Sheng; Chen,Chen Yuan. Support structure for table machine. USP2009027494149.
  39. O'Krangley, Jason M.; Kruithoff, David M.. Transportable medical apparatus. USP2005126976696.
  40. Miller, Timothy J.. Versatile cart for transporting packages to a vehicle. USP2003066575491.