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특허 상세정보

Door opening and closing system

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) A47B-096/04   
미국특허분류(USC) 312/405; 312/222; 049/276
출원번호 US-0763318 (1999-08-16)
우선권정보 NZ-331456 (1998-08-19)
국제출원번호 PCT/NZ99/00139 (1999-08-16)
국제공개번호 WO00/11296 (2000-03-02)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Trexler, Bushnell, Giangiorgi, Blackstone & Marr, LTD
인용정보 피인용 횟수 : 32  인용 특허 : 8
초록

An apparatus assists a user to move a door between closed and open states. The apparatus includes a permanent magnet provided on the door. An electromagnet is located on the door frame adjacent thereto when the door is closed and is energizable to provide a magnetic field which reinforces the permanent magnetic field or to provide a magnetic field in opposition to the permanent magnetic field. A detector detects the state of the door and an interface detects the presence of a user. A controller receives input from the detector and the interface and energ...

대표
청구항

1. A door state changing apparatus for assisting a user to move a door between a closed state where the door is positioned adjacent a door frame and a open state comprising:permanent magnet means on or attached to said door to provide a permanent magnetic field,electromagnet means on or attached to said door frame adjacent said permanent magnet means when said door is in said closed state, which electromagnet means is energisable to provide a magnetic field in a first direction to reinforce said permanent magnetic field and energisable to provide a magne...

이 특허를 인용한 특허 피인용횟수: 32

  1. Martin, Douglas A.. Access monitoring systems for use with consumer-operated kiosks and other enclosures. USP2013078482413.
  2. Martin, Douglas A.. Access monitoring systems for use with consumer-operated kiosks and other enclosures. USP2014068760296.
  3. Freeman,Brian. Automatic door control system. USP2007057213369.
  4. Hapke, Kenyon A.. Automatic door for dishwasher. USP2010067731806.
  5. Kim, Young Nam; Lee, Jee Suck; Kim, Ju Hwan; Yu, Seon Il; Kim, Seon Kyu; Seok, Kun Jun. Door apparatus for drawer type refrigerator. USP2009097591516.
  6. Hecht, Josef; Blersch, Dietmar; Pfister, Armin; Stephan, Florian; Scharg, Jens; Kegel, Markus; Müller, Herbert. Drive device for refrigerator doors. USP2013018347553.
  7. Gossens, Caleb; Shrader, Benjamin Paul. Freezer. USP201309D689531.
  8. Kempfle, Stephan. Household appliance comprising a door opening aid. USP2017089726421.
  9. Tarr, Ronald Scott; Mallampalli, Srinivas. Latch assembly. USP2016059347247.
  10. Hapke, Kenyon A.. Magnetic appliance latch. USP2010027654590.
  11. Colelli, Robert P.; Oberg, Eric E.; Cruz, Johnnie; Cleland, Keith. Merchandise dispensing apparatus providing theft deterrence. USP2014058727179.
  12. Dipaolo, Tony; Wildman, John; Hardy, Stephen N.. Product securement and management system. USP2016069375100.
  13. Dipaolo, Tony; Wildman, John; Hardy, Stephen N.. Product securement and management system. USP2017129844280.
  14. Hardy, Stephen. Product securement and management system. USP2012038136682.
  15. Hardy, Stephen. Product securement and management system. USP2012078210363.
  16. Hardy, Stephen N.. Product securement and management system. USP2016129526351.
  17. Hardy, Stephen N.. Product securement and management system. USP2012088235222.
  18. Hardy, Stephen N.. Product securement and management system. USP2015109167913.
  19. Hardy, Stephen N.. Product securement and management system. USP2017089723934.
  20. Hardy, Stephen N.. Product securement and management system. USP20190410258169.
  21. Hardy, Stephen N.. Product securement and management system. USP2015119185995.
  22. Hardy, Stephen N.. Product securement and management system. USP2016039289078.
  23. Hardy, Stephen N.. Product securement and management system. USP2012088235227.
  24. Hardy, Stephen N.. Product securement and management system. USP2018069993091.
  25. Hardy, Stephen N.. Product securement and management system. USP2013048413823.
  26. Hardy, Stephen N.. Product securement and management system. USP20180810051977.
  27. Hardy, Stephen N.. Product securement and management system. USP2017069687085.
  28. Hardy, Stephen N.; Breslow, David S.; Schlessinger, Gideon. Product securement and management system. USP2017079706857.
  29. Hardy, Stephen; Gold, Adam; Ward, John; Syvuk, Max E.; Swafford, John W.. Product securement and management system. USP2010027661545.
  30. Hecht, Josef; Blersch, Dietmar; Dorner, Georg. Refrigerating and/or freezing appliance. USP2012088234818.
  31. Kempfle, Stephan. Refrigeration appliance with door-opening aid. USP2018019874392.
  32. Keller, Hans Gerd; Krusche, Arnd; Müller, Heinrich. Refrigeration device comprising a door-opening aid. USP2015069062911.