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특허 상세정보

Outlet box knockout

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H02G-003/08    H02G-003/18    B65D-006/40    B65D-006/00   
미국특허분류(USC) 220/003.2; 174/666; 220/254.2; 220/266; 220/277; 220/284; 220/661
출원번호 UP-0014136 (2004-12-16)
등록번호 US-7575122 (2009-08-31)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Jones Day
인용정보 피인용 횟수 : 11  인용 특허 : 34

A knockout in a sidewall of a plastic electrical box has a slot for receiving a screwdriver tip to apply a knockout force to the knockout. The slot is located adjacent the box bottom wall to minimize deformation of the sidewall by a knockout force.


We claim: 1. An electrical outlet box of plastic material, said box having a plurality of walls, at least one knockout arrangement in at least one of said walls, said knockout arrangement comprising inner, intermediate and outer generally circular grooves in said wall circumscribing inner, intermediate and outer knockouts, each knockout having a slot therein adjacent its circumscribing groove for receiving a tip of a flat bladed screwdriver to apply a force to a knockout and separate same from the one wall, said knockout arrangement being positioned and...

이 특허에 인용된 특허 (34)

  1. Gavin Norman W. (2545 Ridge Rd. North Haven CT 06473). Asymmetrical pipe seal and closure member. USP1994025286040.
  2. Roesch, Mark A.; Reviock, Sr., Dennis P.; Carter, Cheryl Renee. Breakaway member. USP2005096940017.
  3. Hinrichs, James O.. Bulged single-hinged scored rupture having a non-circular varying depth score line. USP2004016672389.
  4. Daoud Bassel Hage. Concentric strain relief mechanism for variable diameter cables. USP2000026031182.
  5. Gray James W. (Tucson AZ). Device to remove concentric knockouts in electrical apparatus. USP1980024189964.
  6. Hobbs Billy J. ; Mulvey Philip A. ; Mitchell Jerry P. ; Howe Sam H. ; Crisman Charles T.. Dual drain outlet box. USP2000106125881.
  7. Bordwell Mark A. (Memphis TN). Eccentric knockouts. USP1993035191171.
  8. Jorgensen Robert W. (Niles MI) Lewis Thomas E. (South Bend IN) Kesler Gregory J. (South Bend IN). Eccentric knockouts for metal boxes. USP1987024640433.
  9. Anderson Rebecca J.. Electrical box and box assembly. USP2001086278058.
  10. Hull, Eric G.; Revlock, Sr., Dennis P.. Electrical bracket. USP2004116812405.
  11. Hull, Eric G.; Revlock, Sr., Dennis P.. Electrical bracket. USP2005036870101.
  12. Jeffcoat Walter. Electrical disconnect for use with an appliance. USP1999055906508.
  13. Hull, Eric G.; Riedy, Charles H.; Revlock, Sr., Dennis P.. Electrical outlet box with alternative mounting flanges. USP2005076914187.
  14. Nattel William (Montreal CAX). Electrical wiring box and cable clamp. USP1982024316999.
  15. Fischer Roy K.. Front-locking swivel ball loudspeaker mount. USP1998015704578.
  16. Jorgensen Robert W.. Knockout arrangement providing connection pattern choice on electrical junction box and cover plate arrangement for mou. USP1998035728973.
  17. Sharp Jeffrey O.. Knockout pattern for bundled wire and conduit fittings. USP2000086103973.
  18. Tallmadge Bruce J. ; Rice Jeffrey L.. Load bearing grommet assembly. USP1999095950277.
  19. Gerken Michael Thomas ; Boucher George Joseph ; Squillace Dominick Paul ; Tremmel Hermann F. ; Wise Randall Dean. Molded plastic enclosure. USP2001066242697.
  20. Hibbert David A. (Tolland CT) Newmark Larry J. (Avon CT) Smith James I. (Avon CT) Brasel Timothy C. (Pittsfield MA) Wung Peter C. F. (Pittsfield MA). Molded plastic enclosure for disconnect switches. USP1987064675782.
  21. Newmark Larry J. (Avon CT) Hibbert David A. (Tolland CT). Molded plastic enclosure for electric service apparatus. USP1987084688146.
  22. Fritsch Ronald J. (Sussex WI). Panel-mounted control station housing. USP1987124716496.
  23. Gavin Norman (2545 Ridge Rd. North Haven CT 06473). Pipe seal and closure member. USP1989024805920.
  24. Ceylan Muzaffer,DEX. Plastic terminal box. USP1998065769659.
  25. Gehrs Donald F. (Brandon MS) White Percy A. (Clinton MS). Polymeric electrical enclosure with improved knockout. USP1995085444183.
  26. White Percy A. (Clinton MS). Polymeric enclosure for electrical apparatus. USP1992095148348.
  27. Eversole Larry R. (232 Hickory Ridge Spring TX 77381). Register box and wye. USP1988064750411.
  28. DeBartolo ; Jr. Joseph V. (North Stonington CT). Rotation-limiting knockout configuration. USP1991085043536.
  29. Daoud Bassel H.. Sealing device for telecommunications equipment enclosures. USP1999095959250.
  30. Gretz Thomas J.. Siding box. USP2001056239368.
  31. King Daniel F.. Tub box. USP2001076264056.
  32. Weiss, Bruce W.; Alwardt, Keith A.. Twist out sealed conduit knockout. USP2004076765147.
  33. Gretz Thomas J.. Two-piece siding box. USP1998095804764.
  34. Michael J. Shotey ; Marcus J. Shotey ; Edgar W. Maltby. Universal cover plate. USP2002086441307.