WO2014062656A1 - Circuit breaker lockout - Google Patents

Circuit breaker lockout Download PDF

Info

Publication number
WO2014062656A1
WO2014062656A1 PCT/US2013/065009 US2013065009W WO2014062656A1 WO 2014062656 A1 WO2014062656 A1 WO 2014062656A1 US 2013065009 W US2013065009 W US 2013065009W WO 2014062656 A1 WO2014062656 A1 WO 2014062656A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit breaker
lockout
jaw
base
open center
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2013/065009
Other languages
English (en)
French (fr)
Inventor
Marc R. Obenshain
David M. Howard
Mark J. Pfaller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panduit Corp
Original Assignee
Panduit Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panduit Corp filed Critical Panduit Corp
Priority to EP13783197.0A priority Critical patent/EP2909852B1/en
Priority to MX2015004429A priority patent/MX340130B/es
Priority to JP2015537004A priority patent/JP6243433B2/ja
Publication of WO2014062656A1 publication Critical patent/WO2014062656A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
    • H01H9/282—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock and a separate part mounted or mountable on the switch assembly and movable between an unlocking position and a locking position where it can be secured by the padlock
    • H01H9/283—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock and a separate part mounted or mountable on the switch assembly and movable between an unlocking position and a locking position where it can be secured by the padlock the part being removable

Definitions

  • the present invention relates to a circuit breaker lockout, and more particularly to a circuit breaker lockout with an improved grip.
  • Circuit breaker lockout devices are known in the art.
  • One example of a circuit breaker lockout device is disclosed in U.S. Patent No. 5,300,740.
  • U.S. Patent No. 5,300,740 discloses a circuit breaker lockout for multi-pole breaker switches.
  • the circuit breaker lockout includes a front member and a rear member slidingly secured to each other via a screw.
  • the front member and the rear member are positioned on opposite sides of a tie bar that joins the circuit breaker switches.
  • the screw is tightened to draw the front and rear members toward each other.
  • the rear member includes a bottom lug that is positioned under the tie bar to prevent the circuit breaker lockout from being withdrawn.
  • the circuit breaker lockout is designed to be used only with multi-pole breakers that use a tie bar.
  • the present invention is related to a circuit breaker lockout.
  • the circuit breaker lockout includes a base and a sliding jaw.
  • the base has a top, a bottom and a screw positioned within the base.
  • the jaw has a top, a bottom and sides defining an open center having a first length.
  • the base is positioned between the sides of the jaw in the open center.
  • the bottom of the base extends in the open center and the top of the base extends above the top of the jaw.
  • the jaw slides with respect to the base when the screw is actuated thereby decreasing the first length of the open center to a second length to enable the lockout to surround the switch of a circuit breaker.
  • FIG. 1 is a perspective view of the circuit breaker lockout of the present invention.
  • FIG. 2 is a perspective view of the circuit breaker lockout of FIG. 1 ready to be installed on a circuit breaker.
  • FIG. 3 is a side view of the circuit breaker lockout of FIG. 1.
  • FIG. 4 is an exploded view of the circuit breaker lockout of FIG. 1.
  • FIG. 5 is a perspective view of the circuit breaker lockout of FIG. 1 installed on a single pole circuit breaker.
  • FIG. 6 is a cross sectional view of the circuit breaker lockout taken along line 6-6 of FIG. 5.
  • FIG. 7 is a perspective view of the circuit breaker lockout of FIG. 1 installed on a multi-pole circuit breaker.
  • FIG. 8 is a cross sectional view of the circuit breaker lockout taken along line 8-8 of FIG. 7.
  • FIG. 9 is a bottom perspective view of the circuit breaker lockout of FIG. 1 installed on a single pole circuit breaker and a padlock installed in a transverse mounting position.
  • FIG. 10 is a bottom perspective view of the circuit breaker lockout of FIG. 1 installed on a single pole circuit breaker and a padlock installed in a longitudinal mounting position.
  • the present invention is directed to a circuit breaker lockout 20.
  • the circuit breaker lockout 20 may be installed on a single pole circuit breaker or multi-pole circuit breakers, as desired.
  • FIGS. 1-4 illustrate the two piece circuit breaker lockout 20.
  • the lockout 20 includes a stationary base 30 and a traveling jaw 40 that slides with respect to the base 30.
  • the base 30 includes a top 31 and a bottom 33.
  • the jaw 40 includes a top 41, a bottom 43, and sides 45 that define an open center 48 having a first length LI .
  • the lockout 20 includes either a toggle screw 22 or a set screw 24 for actuating the traveling jaw 40 to install the lockout 20.
  • FIG. 4 also illustrates the metal blades 32, 44 positioned to be installed in the base 30 and the jaw 40, respectively.
  • the metal blade 32 installed in the base 30 is positioned in a vertical direction with respect to the base 30.
  • the metal blade 44 installed in the traveling jaw 40 is positioned at an angle in the jaw 40 to ensure proper placement on a breaker switch 51 (see FIG. 6).
  • the metal blade 44 is positioned as close to the end 42 of the jaw 40 as possible (see FIG. 8).
  • the metal blades 32, 44 are heat treated steel to generate a strong and durable bite over a wide area of the surface.
  • the metal blades 32, 44 are offset from each other to provide an improved grip on the circuit breaker switch 51, 61 (see FIGS. 6 and 8).
  • the upper blade 32 is positioned further out towards the free end of the breaker switch in relation to lower blade 44 that is located close to the face of the breaker. This positions the upper blade 32 to resist the movement of the breaker switch through its arc if an attempt is made to forcefully remove the circuit breaker lockout 20.
  • the combined metal blades 32, 44 provide a stronger grip than prior art circuit breaker lockouts thereby requiring a significant force to remove the lockout 20. As a result, once the lockout 20 is installed, the circuit breaker will remain locked out.
  • the jaw 40 also includes teeth 46 and an open channel 48 having a first length LI .
  • the teeth 46 are molded into the end 42 of the jaw 40 to ensure the lockout 20 is properly positioned on the breaker switch.
  • the open center 48 allows the lockout to surround the switch of the circuit breaker.
  • the open center 48 in the jaw 40 enables the lockout to engage a circuit breaker more squarely and securely.
  • the open center 48 also aides in preventing the lockout 20 from being twisted off of the circuit breaker.
  • the circuit breaker lockout 20 of the present invention is simple to install.
  • the two piece lockout 20 is positioned on a circuit breaker.
  • the circuit breaker lockout 20 is designed to be installed on single or multi-pole circuit breakers.
  • the circuit breaker lockout 20 is installed on a single circuit breaker 50.
  • the circuit breaker lockout 20 is installed on a multi-pole circuit breaker 60.
  • the lockout 20 is tightened via the toggle screw 22 or a tool engages the set screw 24.
  • the jaw 40 slides with respect to the base 30 decreasing the first length LI of the open center 48 to a second length L2.
  • the lockout 20 surrounds a switch of the circuit breaker.
  • the metal blades 32, 44 engage the switch 51 as the lockout 20 is closed.
  • the blade 32 in the base 30 and the teeth 46 molded into the jaw 40 reach behind the tie bar 64 as the lockout 20 is closed.
  • the lockout 20 generates a firm hold on the switch of the circuit breaker without damaging the circuit breaker.
  • a padlock 70 can be installed in one of two positions.
  • the padlock ensures that the lockout cannot be removed from the breaker switch by maintaining the toggle screw in a locked position.
  • the padlock 70 may be installed in the circuit breaker lockout 20 in a transverse direction through the lock hole 34.
  • the transverse padlock position is preferable when a single lockout is used and there is no chance in interference.
  • the padlock 70 may be installed in a longitudinal direction following the length of the lockout through the lock hole 36. The longitudinal padlock position is necessary when the circuit breakers adjacent to each other in a panel need to be locked out.
  • the circuit breaker lockout of the present invention provides a secure device that prevents unwanted access to the circuit breaker.
  • the lockout is easy to install and versatile since one lockout fits a one, two, or three pole circuit breaker.
  • the lockout design with the metal blades and teeth provides an improved grip and eliminates damage to the circuit breaker switches.

Landscapes

  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
PCT/US2013/065009 2012-10-16 2013-10-15 Circuit breaker lockout Ceased WO2014062656A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP13783197.0A EP2909852B1 (en) 2012-10-16 2013-10-15 Circuit breaker lockout
MX2015004429A MX340130B (es) 2012-10-16 2013-10-15 Bloqueo de cortacircuito.
JP2015537004A JP6243433B2 (ja) 2012-10-16 2013-10-15 サーキットブレーカのロックアウト

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201261714416P 2012-10-16 2012-10-16
US61/714,416 2012-10-16
US14/052,981 2013-10-14
US14/052,981 US9202646B2 (en) 2012-10-16 2013-10-14 Circuit breaker lockout

Publications (1)

Publication Number Publication Date
WO2014062656A1 true WO2014062656A1 (en) 2014-04-24

Family

ID=50474407

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2013/065009 Ceased WO2014062656A1 (en) 2012-10-16 2013-10-15 Circuit breaker lockout

Country Status (5)

Country Link
US (1) US9202646B2 (https=)
EP (1) EP2909852B1 (https=)
JP (1) JP6243433B2 (https=)
MX (1) MX340130B (https=)
WO (1) WO2014062656A1 (https=)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD808347S1 (en) * 2016-04-14 2018-01-23 Brady Worldwide, Inc. Multi-pole breaker lockout
USD808345S1 (en) * 2016-04-14 2018-01-23 Brady Worldwide, Inc. Breaker lockout
USD808346S1 (en) * 2016-04-14 2018-01-23 Brady Worldwide, Inc. Breaker lockout
USD798246S1 (en) * 2016-05-02 2017-09-26 Brady Worldwide, Inc. Single-pole breaker lockout
USD845916S1 (en) * 2017-08-29 2019-04-16 Brady Worldwide, Inc. Fuse lock out device
USD843955S1 (en) * 2017-08-29 2019-03-26 Brady Worldwide, Inc. Fuse lock out device
USD843956S1 (en) * 2017-09-06 2019-03-26 Brady Worldwide, Inc. Terminal block lock out device
US10354812B1 (en) * 2018-01-17 2019-07-16 Brady Worldwide, Inc. Circuit breaker lockout device
USD934819S1 (en) * 2018-01-17 2021-11-02 Brady Worldwide, Inc. Lockout device
DE102018113009A1 (de) 2018-05-30 2019-12-05 ABUS August Bremicker Söhne KG Schutzschalter-Sperrvorrichtung
USD914618S1 (en) 2019-08-13 2021-03-30 Master Lock Company Llc Switch lockout device
USD947797S1 (en) 2019-09-27 2022-04-05 Tagout Safety Products Llc Safety lockout device for electrical switch
USD987587S1 (en) 2020-04-02 2023-05-30 Tagout Safety Products Llc Safety lockout device for electrical switch
US12518934B2 (en) 2023-09-08 2026-01-06 Brady Worldwide, Inc. Rotary circuit breaker lockout system and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5300740A (en) 1993-04-27 1994-04-05 Benda Steven J Circuit breaker lock out - multi-pole
EP0824263A2 (en) * 1996-08-13 1998-02-18 Panduit Corporation Circuit breaker lockout device
WO2003041102A1 (en) * 2001-11-02 2003-05-15 Brady Worldwide, Inc. Circuit breaker lock-out assembly
WO2006105288A2 (en) * 2005-03-30 2006-10-05 Master Lock Company Llc Circuit breaker lockout device
CA2577167A1 (en) * 2007-02-06 2008-08-06 Michael Brojanac Switch lockout device

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4728613Y1 (https=) * 1967-06-17 1972-08-29
JP2570023B2 (ja) 1990-10-03 1997-01-08 三菱電機株式会社 回路しや断器の操作ハンドルロツク機構
US5079390A (en) 1991-04-03 1992-01-07 Occidental Chemical Corporation Lock-out device for circuit breakers
US5147991A (en) 1991-07-22 1992-09-15 Jordan Sr Nathaniel Electrical switch locking system
US5181602A (en) * 1991-09-18 1993-01-26 The United States Of America As Represented By The United States Department Of Energy Lockout device for high voltage circuit breaker
US5322980A (en) 1991-12-24 1994-06-21 Benda Steven J Circuit breaker lock out- multi-pole
US5310969A (en) 1992-04-21 1994-05-10 Prinzing Enterprises, Inc. Switch lockouts
US5256838A (en) 1992-07-02 1993-10-26 Benda Steven J Lock out for circuit breakers having hole in actuating lever
US5500495A (en) 1993-01-26 1996-03-19 Brady Usa, Inc. Circuit breaker lockout device for attachment to solid switch stem
US5543593A (en) * 1994-09-07 1996-08-06 Prinzing Enterprises, Inc. Electrical switch lockout device
US7692108B1 (en) 2008-12-16 2010-04-06 General Electric Company Circuit breaker lock-out device
JP5493222B2 (ja) * 2009-10-13 2014-05-14 サントリーホールディングス株式会社 電源スイッチロック装置
US8629359B2 (en) 2011-02-16 2014-01-14 Panduit Corp. Circuit breaker lockout

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5300740A (en) 1993-04-27 1994-04-05 Benda Steven J Circuit breaker lock out - multi-pole
EP0824263A2 (en) * 1996-08-13 1998-02-18 Panduit Corporation Circuit breaker lockout device
WO2003041102A1 (en) * 2001-11-02 2003-05-15 Brady Worldwide, Inc. Circuit breaker lock-out assembly
WO2006105288A2 (en) * 2005-03-30 2006-10-05 Master Lock Company Llc Circuit breaker lockout device
CA2577167A1 (en) * 2007-02-06 2008-08-06 Michael Brojanac Switch lockout device

Also Published As

Publication number Publication date
US20140102865A1 (en) 2014-04-17
JP2015536525A (ja) 2015-12-21
EP2909852A1 (en) 2015-08-26
MX340130B (es) 2016-06-28
US9202646B2 (en) 2015-12-01
EP2909852B1 (en) 2017-08-02
MX2015004429A (es) 2015-06-24
JP6243433B2 (ja) 2017-12-06

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