US3291924A - Handle locking attachment for electrical control devices - Google Patents

Handle locking attachment for electrical control devices Download PDF

Info

Publication number
US3291924A
US3291924A US435242A US43524265A US3291924A US 3291924 A US3291924 A US 3291924A US 435242 A US435242 A US 435242A US 43524265 A US43524265 A US 43524265A US 3291924 A US3291924 A US 3291924A
Authority
US
United States
Prior art keywords
leg portions
clamping
handle
clamping member
housing
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.)
Expired - Lifetime
Application number
US435242A
Inventor
James A Tharp
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.)
Schneider Electric USA Inc
Original Assignee
Square D Co
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 Square D Co filed Critical Square D Co
Priority to US435242A priority Critical patent/US3291924A/en
Application granted granted Critical
Publication of US3291924A publication Critical patent/US3291924A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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

  • An object of the invention is to provide a padlock- Ieceiving type of handle locking attachment which is readily clampable directly to a pivotable operating handle extending outwardly of a casing of .an electrical control device to lock the handle in one of two operative positions thereof.
  • FIG. 1 is a fragmentary perspective view of a circuit breaker having a handle locking attachment constructed in accordance with the invention secured to a pivotable operating handle thereof;
  • FIG. 2 is a sectional view taken generally along the line 2-2 of FIG. 1;
  • FIG. '3 is a sectional view taken generally along the line 3-3 of FIG. 2;
  • FIG. 4 is a front view of the-handle locking attachment of FIG. 1;
  • FIG. 5 is a side view of the handle locking attachment of FIG. 1;
  • FIG. 6 is a perspective view of the clamping member of the handle locking attachment of FIG. 1;
  • FIG. 7 is a perspective view of the housing member of the handle locking attachment of FIG. 1.
  • a handle locking attachment 10 constructed in accordance with the invention may be used on circuit breakers such as disclosed in US. patent application, Serial No. 246,522, filed on December 21, 1962, and also on various other circuit breakers and switches.
  • FIGS. 1-3 show a casing 12 of a circuit breaker having a pivotable operating handle 14 extending outwardly of the casing through a suitable aperture.
  • the casing 12 is provided with suitable indicia to indicate ON and OFF operative positions of the handle.
  • the handle looking attachment 10 may be secured directly to the handle 14 and includes a generally U-shaped housing member 16 (best shown in FIG. 7) having a bight portion 18 and a pair of generally parallel leg portions 19 and 20.
  • the leg portions 19 and 20 are inwardly offset by otfsetting portions 21 and 22 to provide a pair of inwardly offset portions 23 and 24.
  • the bight portion 18 is lanced inwardly to provide a biting edge 25.
  • the handle locking attachment 10 also includes a generally U-shaped clamping member 28 (best shown in FIG. 6) fitting between the inwardly offset portions 23 and 24 and having a bight portion 30* and [a pair of generally parallel leg portions 31 and 32.
  • the clamping member 28 is pivotally mounted with respect to the housing member 16 by means of a rivet 34 or other suitable fastening means extending through a pair of aligned openings 31a and 32a provided respectively in the leg portions 31 and 32 of the clamping member 28 and through a pair of aligned openings 23a and 24a provided respectively in the oifset portions 23 and 24 of the leg portions 19 and 20 of the housing member 16.
  • the rivet 34 is disposed adjacent the offsetting portions 21 and 22 and adjacent the free ends of the leg portions 3 1 and 32.
  • the free ends of the leg portions 31 and 32 are formed to provide curved surfaces 31b and 32b of varying radius measured from the axis of the rivet 34.
  • the enlarged bight end portion of the housing member 16 is slipped over the outer end portion of the handle 14 while the clamping member 28 is in a position relative to the housing member 16 as indicated by broken lines in FIGS. 1-3.
  • the clamping member 28 is then pivoted relatively to the housing member 16 to a handle clamping position indicated by full lines in FIGS. 1-3. As the clamping.
  • the distance between the bight portion 18 and the leg portions 31 and 32 decreases because of the aforementioned varying radius of the curved surfaces 31b and 32b defining the free ends of the leg portions 31 and 32, and the handle 14 is thus clamped between the bight portion 18 and the free ends of the leg portions 31 and 32.
  • a padlock 36 may then be secured in place on the handle locking attachment 10 to maintain the clamping member 28 in handle clamping position by inserting a shackle 37 of the padlock through a pair of holes 38 and 39 provided respectively in the portions 23 and 24 of the housing member 16 adjacent the free ends thereof and through :a pair of holes 40 and 41 provided respectively in the leg portions 31 and 32 of the clamping member 28 adjacent the bight portion 30 thereof.
  • the offset portions 23 and 24 of the housing member 16 may be provided respectively with a pair of projections 43 and 44 adapted to extend into the handleaperture of the casing 12 .as shown in FIG. 3. Further, the offset portions 23 and 24 are formed to extend at an acute angle .to the bight portion 18, so that when the attachment 10 is clamped on the handle 14 when the handle is in one of its operative positions and an attempt is made to pivot it to the other of its operative positions, the offset portions 23 and 24 will bear against the casing 12.
  • a pair of holes 45 and 46 may be provided respectively in the offset portions 23 :and 24 of the housing member 16 and a pair of holes 47 and 48 may be provided respectively in the leg portions 31 and 32 of the clamping member 28 for the reception of a sealing wire (not shown).
  • a handle locking attachment securable to a pivotable operating handle extending outwardly of a casing of an electrical control device to lock the handle in one of two operative positions thereof, said attachment comprising a generally U-shaped housing member formed from flat sheet stock and including a bight portion and a pair of spaced, flatwise generally parallel leg portions, a generally U-shaped clamping member formed from flat sheet stock and including a bight portion and a pair of spaced, flatwise generally parallel leg portions, the leg portions of said clamping member being disposed between the leg portions of said housing member, and means connecting said clamping and housing members for pivotal movement relative to each other about .

Landscapes

  • Breakers (AREA)
  • Patch Boards (AREA)

Description

Dec. 13, 1966 a J. A. THARP 3,291,924
HANDLE LOCKING ATTACHMENT FOR ELECTRICAL CONTROL DEVICES Filed Feb. 25, 1965 United States Patent 3,291,924 HANDLE LOCKING ATTACHMENT FOR ELECTRICAL CONTROL DEVICES James A. Tharp, Cedar Rapids, Iowa, assignor to Square D Company, Park Ridge, Ill., a corporation of Michigan Filed Feb. 25, 1965, Ser. No. 435,242 4 Claims. (Cl. 200-42) This invention relates to a handle locking. attachment for electrical control devices such as switches and molded-case circuit breakers.
An object of the invention is to provide a padlock- Ieceiving type of handle locking attachment which is readily clampable directly to a pivotable operating handle extending outwardly of a casing of .an electrical control device to lock the handle in one of two operative positions thereof.
Other objects and advantages will become apparent when the following specification is considered along with the accompanying drawings in which:
FIG. 1 is a fragmentary perspective view of a circuit breaker having a handle locking attachment constructed in accordance with the invention secured to a pivotable operating handle thereof;
FIG. 2 is a sectional view taken generally along the line 2-2 of FIG. 1;
FIG. '3 is a sectional view taken generally along the line 3-3 of FIG. 2;
FIG. 4 is a front view of the-handle locking attachment of FIG. 1;
FIG. 5 is a side view of the handle locking attachment of FIG. 1;
FIG. 6 is a perspective view of the clamping member of the handle locking attachment of FIG. 1; and
FIG. 7 is a perspective view of the housing member of the handle locking attachment of FIG. 1.
A handle locking attachment 10 constructed in accordance with the invention may be used on circuit breakers such as disclosed in US. patent application, Serial No. 246,522, filed on December 21, 1962, and also on various other circuit breakers and switches.
FIGS. 1-3 show a casing 12 of a circuit breaker having a pivotable operating handle 14 extending outwardly of the casing through a suitable aperture. The casing 12 is provided with suitable indicia to indicate ON and OFF operative positions of the handle. The handle looking attachment 10 may be secured directly to the handle 14 and includes a generally U-shaped housing member 16 (best shown in FIG. 7) having a bight portion 18 and a pair of generally parallel leg portions 19 and 20. Preferably the leg portions 19 and 20 are inwardly offset by otfsetting portions 21 and 22 to provide a pair of inwardly offset portions 23 and 24. The bight portion 18 is lanced inwardly to provide a biting edge 25.
The handle locking attachment 10 also includes a generally U-shaped clamping member 28 (best shown in FIG. 6) fitting between the inwardly offset portions 23 and 24 and having a bight portion 30* and [a pair of generally parallel leg portions 31 and 32. The clamping member 28 is pivotally mounted with respect to the housing member 16 by means of a rivet 34 or other suitable fastening means extending through a pair of aligned openings 31a and 32a provided respectively in the leg portions 31 and 32 of the clamping member 28 and through a pair of aligned openings 23a and 24a provided respectively in the oifset portions 23 and 24 of the leg portions 19 and 20 of the housing member 16. The rivet 34 is disposed adjacent the offsetting portions 21 and 22 and adjacent the free ends of the leg portions 3 1 and 32. For the purpose hereinafter set 3,291,924 Patented Dec. 13, 1966 forth, the free ends of the leg portions 31 and 32 are formed to provide curved surfaces 31b and 32b of varying radius measured from the axis of the rivet 34.
In the attaching of the handle locking attachment 10 to the handle 14, the enlarged bight end portion of the housing member 16 is slipped over the outer end portion of the handle 14 while the clamping member 28 is in a position relative to the housing member 16 as indicated by broken lines in FIGS. 1-3. The clamping member 28 is then pivoted relatively to the housing member 16 to a handle clamping position indicated by full lines in FIGS. 1-3. As the clamping. member 28 is pivoted from the broken line position to the full line position, the distance between the bight portion 18 and the leg portions 31 and 32 decreases because of the aforementioned varying radius of the curved surfaces 31b and 32b defining the free ends of the leg portions 31 and 32, and the handle 14 is thus clamped between the bight portion 18 and the free ends of the leg portions 31 and 32. A padlock 36 may then be secured in place on the handle locking attachment 10 to maintain the clamping member 28 in handle clamping position by inserting a shackle 37 of the padlock through a pair of holes 38 and 39 provided respectively in the portions 23 and 24 of the housing member 16 adjacent the free ends thereof and through :a pair of holes 40 and 41 provided respectively in the leg portions 31 and 32 of the clamping member 28 adjacent the bight portion 30 thereof.
The offset portions 23 and 24 of the housing member 16 may be provided respectively with a pair of projections 43 and 44 adapted to extend into the handleaperture of the casing 12 .as shown in FIG. 3. Further, the offset portions 23 and 24 are formed to extend at an acute angle .to the bight portion 18, so that when the attachment 10 is clamped on the handle 14 when the handle is in one of its operative positions and an attempt is made to pivot it to the other of its operative positions, the offset portions 23 and 24 will bear against the casing 12.
If desired, a pair of holes 45 and 46 may be provided respectively in the offset portions 23 :and 24 of the housing member 16 and a pair of holes 47 and 48 may be provided respectively in the leg portions 31 and 32 of the clamping member 28 for the reception of a sealing wire (not shown).
It will be seen that I have provided a simply construeted handle locking attachment which is readily secured on a pivotable operating handle merely by slipping the housing member 16 on the handle and flipping the clamping member 28 into clamping position. The biting edge 25 aids in retaining the attachment on the handle.
Various modifications may be made in the structure shown and described without departing from the spirit and scope of the invention.
I claim:
1. A handle locking attachment securable to a pivotable operating handle extending outwardly of a casing of an electrical control device to lock the handle in one of two operative positions thereof, said attachment comprising a generally U-shaped housing member formed from flat sheet stock and including a bight portion and a pair of spaced, flatwise generally parallel leg portions, a generally U-shaped clamping member formed from flat sheet stock and including a bight portion and a pair of spaced, flatwise generally parallel leg portions, the leg portions of said clamping member being disposed between the leg portions of said housing member, and means connecting said clamping and housing members for pivotal movement relative to each other about .a fixed axis extending generally perpendicularly to the leg portions of said clamping and housing members and disposed adjacent the free ends of the leg portions of said contr ol device when said handle =locking attachment is clamping member 'in'spaced 'relationshipto the bight portion of said housing member, said free ends of the leg portions of said clamping member being defined respectively by curved edge surfiaces of varying radius measured from said fixed axis of pivotal movement be tween said'clamping and housing members, the distance between said bight portion of said housing member and said free ends of the leg portions of said clamping member decreasing due to the varying radius of said curved edge surfaces as said clamping member is pivoted relatively to said housing member from a position in which the leg portions 'of said clamping member extend generally perpendicularly to the :leg portions of said housing member to a position in which the leg portions of said clamping member are substantially aligned with the leg portions of said housing member, whereby a pivotable operating handle extending outwandly of a casing of an electrical control device may be clamped between said bight portion of said housing member and said free ends of said leg portions of said clamping member, the free end portions of the leg portions of said housing member and the bight end portions of the leg portions of said clamping member having apertures extending respectively therethrough which are aligned When said clamping member is in clamping position relatively to said housing member for receiving a shackle of a padlock to lock said clamping member in said clamping secured on a pivotable operating handle thereof and said handle is in one of two operative positions and an attempt is made to pivot-said handle to the other operatirve position there-of. 1
2. A handle locking attachment as claimed in claim T1, wherein the leg portions of said housing member are inwardly offset adjacent said fixed axis of pivotal movement between said clamping and housing members and on the side of said axis toward said bight portion of said housing member. I
3. A handle locking attachment as claimed in claim 1, wherein said bight portion of said housing member is lanced to provide a biting edge which aids in retaining said attachment on a handle when said handle is clamped therein.
4. A handle locking attachment as claimed in claim [1, wherein the leg portions of one of said members are provided respectively with a pair of projections receivable in the handle aperture of an electrical control de vice when said attachment is mounted on the handle thereof.
No references cited.
ROBERT K. SCI-IAEFER, Primary Examiner.
30 H. HOHAUSER, Assistant Examiner.

Claims (1)

1. A HANDLE LOCKING ATTACHMENT SECURABLE TO PIVOTABLE OPERATING HANDLE EXTENDING OUTWARDLY OF A CASING OF AN ELECTRICAL CONTROL DEVICE TO LOCK THE HANDLE IN ONE OF TWO OPERATIVE POSITIONS THEREOF SAID ATTACHEMENT COMPRISING A GENERALLY U-SHAPED HOUSING MEMBER FORMED FROM FLAT SHEET STOCK AND INCLUDING A BIGHT PORTION AND A PAIR OF SPACED, FLATWISE GENERALLY PARALLEL LEG PORTIONS, A GENERALLY U-SHAPED CLAMPING MEMBER FORMED FROM FLAT SHEET STOCK AND INCLUDING A BIGHT PORTION AND A PAIR OF SPACED, FLATWISE GENERALLY PARALLEL LEG PORTIONS THE LEG PORTIONS OF SAID CLAMPING MEMBER BEING DISPOSED BETWEEN THE LEG PORTIONS OF SAID HOUSING MEMBER, AND MEANS CONNECTING SAID CLAMPING AND HOUSING MEMBERS FOR PIVOTAL MOVEMENT RELATIVE TO EACH OTHER ABOUT A FIXED AXIS EXTENDING GENERALY PERPENDICULARLY TO THE LEG PORTIONS OF SAID CLAMPING AND HOUSING MEMBERS AND DISPOSED ADJACENT THE FREE ENDS OF THE LEG PORTIONS OF SAID CLAMPING MEMBER IN SPACED RELATIONSHIP TO THE BIGHT PORTION OF SAID HOUSING MEMBER, SAID FREE ENDS OF THE LEG PORTIONS OF SAID CLAMPING MEMBER BEING DEFINED RESPECTIVELY BY CURVED EDGE SURFACES OF VARYING RADIUS MEASURED FROM SAID FIXED AXIS OF PIVOTAL MOVEMENT BETWEEN SAID CLAMPING AND HOUSING MEMBERS, THE DISTANCE BETWEEN SAID BIGHT PORTION OF SAID HOUSNG MEMBER AND SAID FREE ENDS OF THE LEG PORTIONS OF SAID CLAMPING MEMBER DECREASING DUE TO THHE VARYING RADIUS OF SAID CURVED EDGE SURFACES AS SAID CLAMPING MEMBER IS PIVOTED RELATIVELY TO SAID HOUSING MEMBER FROM A POSITION IN WHICH THE LEG PORTIONS OF THE SAID CLAMPING MEMBER EXTEND GENERALLY PERPENDICULARLY TO THE LEG PORTIONS OF SAID HOUSING MEMBVER OT A POSITION IN WHICH THE LEG PORTIONS OF SAID CLAMPING MEMBER ARE SUBSTANTIALLY ALIGNED WITH THE LEG PORTIONS OF SAID HOUSING MEMBER, WHEREBY A PIVOTABLE OPERATING HANDLE EXTENDING OUTWARDLY OF A CASING OF AN ELECTRICAL CONTROL DEVICE MAY BE CLAMPED BETWEEN SAID BIGHT PORTION OF SAID HOUSING MEMBER AND SAID FREE ENDS OF SAID LEG PORTIONS OF SAID CLAMPING MEMBER, THE FREE END PORTIONS OF THE LEG PORTIONS OF SAID HOUSING MEMBER AND THE BIGHT END PORTIONS OF THE LEG PORTIONS OF SAID CLAMPING MEMBER HAVING APERTURES EXTENDING RESPECTIVELY THERETHROUGH WHICH ARE ALIGNED WHEN SAID CLAMPING MEMBER IS IN CLAMPING POSITION RELATIVELY TO SAID HOUSING MEMBER FOR RECEIVING A SHACKLE OF A PADLOCK TO LOCK SAID CLAMPING MEMBER IN SAID CLAMPING POSITION, AND THE LEG PORTIONS OF SAID HOUSING MEMBER BEING FORMED TO BEAR AGAINST THE CASING OF AN ELECTRICAL CONTROL DEVICE WHEN SAID HANDLE LICKING ATTACHMENT IS SECURED ON A PIVOTABLE OPERATING HANDLE THEREOF AND SAID HANDLE IS IN ONE OF TWO OPERATIVE POSITIONS AND AN ATTEMPT IS MADE TO PIVOT SAID HANDLE TO THE OPERATIVE POSITION THEREOF.
US435242A 1965-02-25 1965-02-25 Handle locking attachment for electrical control devices Expired - Lifetime US3291924A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US435242A US3291924A (en) 1965-02-25 1965-02-25 Handle locking attachment for electrical control devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US435242A US3291924A (en) 1965-02-25 1965-02-25 Handle locking attachment for electrical control devices

Publications (1)

Publication Number Publication Date
US3291924A true US3291924A (en) 1966-12-13

Family

ID=23727617

Family Applications (1)

Application Number Title Priority Date Filing Date
US435242A Expired - Lifetime US3291924A (en) 1965-02-25 1965-02-25 Handle locking attachment for electrical control devices

Country Status (1)

Country Link
US (1) US3291924A (en)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376400A (en) * 1965-03-10 1968-04-02 Square D Co Handle locking attachment for electrical control devices
US4260861A (en) * 1979-07-30 1981-04-07 Gould Inc. Handle locking means for circuit breaker
US4677261A (en) * 1984-08-16 1987-06-30 La Telemecanique Electrique Device for locking the control member of an electrical appliance of the manual control type
US4978816A (en) * 1990-02-16 1990-12-18 General Electric Company Circuit breaker handle interlock arrangement
DE9202764U1 (en) * 1992-03-02 1992-05-07 Siemens AG, 80333 München Lockable device
US5148910A (en) * 1991-03-19 1992-09-22 Houston Industries Incorporated Circuit breaker tagging/lockout apparatus
US5310969A (en) * 1992-04-21 1994-05-10 Prinzing Enterprises, Inc. Switch lockouts
US5412167A (en) * 1993-10-08 1995-05-02 Eaton Corporation Locking device for an electrical switch
US5432308A (en) * 1994-08-10 1995-07-11 Howie, Jr.; Robert K. Lockout strip for an electrical switch
US5467622A (en) * 1994-04-29 1995-11-21 Eaton Corporation Handle lock for reciprocally movable operator handle
US5717178A (en) * 1996-02-06 1998-02-10 Eaton Corporation Locking mechanism for electrical switches
WO1998059352A1 (en) * 1997-06-25 1998-12-30 Siemens Energy & Automation, Inc. Circuit breaker movable actuator blocking and securing means
US5909019A (en) * 1997-12-30 1999-06-01 Eaton Corporation Front mounting plate with integral locking tab
US6015956A (en) * 1997-06-25 2000-01-18 Siemens Energy Automotation Circuit breaker movable actuator blocking and securing method
US6365851B1 (en) * 2001-04-30 2002-04-02 Airpax Corporation, L.L.C. Electrical switch extraction handle with lockout
US20050135759A1 (en) * 2003-12-22 2005-06-23 Xingwu Wang Optical fiber assembly
US20060065026A1 (en) * 2004-09-30 2006-03-30 Hooper James E Tamper-proof latch cover
US20080067043A1 (en) * 2006-09-18 2008-03-20 Master Lock Company Llc Switch lockout device
CN101882540A (en) * 2010-07-08 2010-11-10 江苏辉能电气有限公司 Low-voltage circuit breaker handle locking device and locking method
FR3004286A1 (en) * 2013-04-03 2014-10-10 Schneider Electric Ind Sas DEVICE FOR LOCKING THE LEVER OF AN ELECTRICAL PROTECTION DEVICE, AND ELECTRICAL PROTECTION APPARATUS COMPRISING IT
US9208964B2 (en) 2012-12-14 2015-12-08 Master Lock Company Llc Lockout device
US10023382B2 (en) * 2015-05-06 2018-07-17 Ryan J. Hess Universal lock for the hook of a roll-off container and method of use

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376400A (en) * 1965-03-10 1968-04-02 Square D Co Handle locking attachment for electrical control devices
US4260861A (en) * 1979-07-30 1981-04-07 Gould Inc. Handle locking means for circuit breaker
US4677261A (en) * 1984-08-16 1987-06-30 La Telemecanique Electrique Device for locking the control member of an electrical appliance of the manual control type
US4978816A (en) * 1990-02-16 1990-12-18 General Electric Company Circuit breaker handle interlock arrangement
US5148910A (en) * 1991-03-19 1992-09-22 Houston Industries Incorporated Circuit breaker tagging/lockout apparatus
DE9202764U1 (en) * 1992-03-02 1992-05-07 Siemens AG, 80333 München Lockable device
US5310969A (en) * 1992-04-21 1994-05-10 Prinzing Enterprises, Inc. Switch lockouts
US5577599A (en) * 1992-04-21 1996-11-26 Prinzing Enterprises, Inc. Switch lockouts
US5412167A (en) * 1993-10-08 1995-05-02 Eaton Corporation Locking device for an electrical switch
US5467622A (en) * 1994-04-29 1995-11-21 Eaton Corporation Handle lock for reciprocally movable operator handle
US5432308A (en) * 1994-08-10 1995-07-11 Howie, Jr.; Robert K. Lockout strip for an electrical switch
US5717178A (en) * 1996-02-06 1998-02-10 Eaton Corporation Locking mechanism for electrical switches
WO1998059352A1 (en) * 1997-06-25 1998-12-30 Siemens Energy & Automation, Inc. Circuit breaker movable actuator blocking and securing means
US6015956A (en) * 1997-06-25 2000-01-18 Siemens Energy Automotation Circuit breaker movable actuator blocking and securing method
US5909019A (en) * 1997-12-30 1999-06-01 Eaton Corporation Front mounting plate with integral locking tab
US6365851B1 (en) * 2001-04-30 2002-04-02 Airpax Corporation, L.L.C. Electrical switch extraction handle with lockout
US20050135759A1 (en) * 2003-12-22 2005-06-23 Xingwu Wang Optical fiber assembly
US20060065026A1 (en) * 2004-09-30 2006-03-30 Hooper James E Tamper-proof latch cover
US7204105B2 (en) * 2004-09-30 2007-04-17 Tellabs Petaluma, Inc. Tamper-proof latch cover
US20080067043A1 (en) * 2006-09-18 2008-03-20 Master Lock Company Llc Switch lockout device
US7501593B2 (en) 2006-09-18 2009-03-10 Master Lock Company Llc Switch lockout device
US20090205934A1 (en) * 2006-09-18 2009-08-20 Master Lock Company Llc Switch lockout device
US7977590B2 (en) 2006-09-18 2011-07-12 Master Lock Company Llc Switch lockout device
CN101882540A (en) * 2010-07-08 2010-11-10 江苏辉能电气有限公司 Low-voltage circuit breaker handle locking device and locking method
US9208964B2 (en) 2012-12-14 2015-12-08 Master Lock Company Llc Lockout device
FR3004286A1 (en) * 2013-04-03 2014-10-10 Schneider Electric Ind Sas DEVICE FOR LOCKING THE LEVER OF AN ELECTRICAL PROTECTION DEVICE, AND ELECTRICAL PROTECTION APPARATUS COMPRISING IT
US10023382B2 (en) * 2015-05-06 2018-07-17 Ryan J. Hess Universal lock for the hook of a roll-off container and method of use

Similar Documents

Publication Publication Date Title
US3291924A (en) Handle locking attachment for electrical control devices
US3376400A (en) Handle locking attachment for electrical control devices
US3214530A (en) Padlock-receiving locking attachment for pivotable operating handles of electrical control devices
US4260861A (en) Handle locking means for circuit breaker
US3361462A (en) Mortise type latch assembly with reversible blocker means for knob detent
US2616643A (en) Fastening device
US3248078A (en) Support bracket
US3595040A (en) Handle lock attachment
JPH01315571A (en) Lock
US10312037B1 (en) Rotary motion switching apparatus usable with circuit interrupter
KR900003942A (en) Trip Bar Interlock for Circuit Breaker
US4160137A (en) Bracket means to mount a padlock for blocking movement of a switch handle
US3197581A (en) Two piece handle locking device each with portions interlockable with the other
KR920008687Y1 (en) Horn switch
US1567863A (en) House-wiring structure
US4176759A (en) Electrical outlet box
US4165010A (en) Electrical outlet box
JPS5935490B2 (en) Extended push rod for operating electricity
JP6172026B2 (en) Vehicle lock system
JP4316091B2 (en) Electronic trip device
US3346711A (en) Electrical switch
US10056215B1 (en) Universal adjustable electrical circuit breaker locking device
US3212804A (en) Cover latch
US1522729A (en) Fuse block
US4150273A (en) Enclosed circuit protective device assembly