US3110779A - Molded handle tie - Google Patents
Molded handle tie Download PDFInfo
- Publication number
- US3110779A US3110779A US65979A US6597960A US3110779A US 3110779 A US3110779 A US 3110779A US 65979 A US65979 A US 65979A US 6597960 A US6597960 A US 6597960A US 3110779 A US3110779 A US 3110779A
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- handles
- tie
- circuit breaker
- handle
- circuit breakers
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- 230000027455 binding Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005755 formation reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 244000299507 Gossypium hirsutum Species 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
- H01H71/1018—Interconnected mechanisms with only external interconnections
Definitions
- This invention relates to circuit breakers of low current rating and more particularly to a novel molded handle tie whereby two adjacent circuit breakers may be manually operated and which permits the handle of a tripped circuit breaker to move to trip position while the handle of the other circuit breaker remains in the ON position.
- Circuit breakers of this type are manually operable between two extreme positions to open and close the circuit breaker.
- biasing means which urges the operating handle to an intermediate position to indicate the tripped condition.
- the prior art has attempted to solve the above noted problem by providing overlapping handle extensions held by rivets, by providing a tie bar held by screws and brackets, by providing male and female handle extensions engaging each other with ample clearance, by providing a swiveling stepped cylindrical tie held in oversize holes in the handles, and by providing a cylindrical tie held by a loose bar disposed in handle apertures.
- a handle tie means which is of extremely simple construction and which is readily mounted to the circuit breakers. This is accomplished by providing a simple molded member which is disposed in the space between adjacent circuit breaker handles.
- the molded member is provided with an elongated slot which receives pins extending from the sides of the circuit breaker handles.
- the elongated slot provides a lost motion connection between the tie member and the circuit breaker handles, so that the handle of the tripped circuit breaker may move to trip indicating position without causing movement of the handle of the other circuit breaker from the ON position.
- the pins in question are constructed of rolled sheet material. These pins are disposed within apertures in the handles and are force fitted therein.
- Another object is to provide a handle tie means comprising a simple molded member.
- Still another object is to provide a handle tie means which is secured to the circuit breaker handles by pins extending from these handles.
- FIGURE l is an end View of a pair of circuit breakers whose handles are tied together by a tie means constructed in accordance with the teachings of the instant invention.
- FIGURE 2 is a fragmentary plan View of the circuit breakers of FIGURE l with the handles in the ON position.
- FlGURE 3 is a View similar to FlGURE 2, with the handles of one circuit breaker in the ON position and the handle of the other circuit breaker in the trip position.
- FGURE 4 is a fragmentary side elevation of the circuit breakers of FIGURE l looking in the direction of arrows 4 4 of FIGURE l.
- FIGURE 5 is an exploded perspective of the handle tie and securing means therefor.
- Circuit breakers lll, il. are shown mounted adjacent to one another in side by side relationship.
- the circuit breakers are of the type fully described in U.S. Patent 2,773,949.
- circuit breakers of this type are mounted within a panel board, they are maintained substantially in the positions illustrated in FIGURE 1.
- Each of the circuit breakers itl, il is provided with a manually operating handle l2, which projects from the top of the circuit breaker housing.
- Handle 12 is pivotable from the ON position to the OFF position. When the circuit breaker has tripped, the operating mechanism thereof biases handle l2 to a trip position which is intermediate the ON and OFF positions.
- Handle tie 13 is positioned between operating handles l2 of both circuit breakers li and ll, so that both circuit breakers are simultaneously operable to the OFF and ON positions, as will be more fully explained hereinarter.
- Handle tie 13 comprises a simple molded member having a narrow downward extension lll, which is disposed within groove l5 formed through the cooperation between raised housing portions lo at the tops of adjacent circuit breakers ttl, lll. Groove l5 serves yas a means for guiding Ihandle tie i3 in its sliding movement. Handle tie 13 is provided with an elongated ⁇ slot i7 which receives pins Zik-2L which extends toward each other from handles l2.. Since pins Ztl, 2l are yof identical construction, only pin 2@ will be described. Pin 2d is constructed of rolled sheet material one end of which is upset to lform transverse tabs 22.
- Tie member 13 is mounted to circuit breakers lil, il by placing guide projection ld into groove l5 and moving tie member i3 into alignment with handles l2.
- Pin 2@ is then entered into handle aperture 23 of circuit breaker l1 from the left side thereof until tabs 22 prevent further movement of pin 20 to the right. At this time the right end of pin 26 is disposed within slot 17.
- handle aperture 23 is slightly nndersized with respect lt-o pin Ztl, so that a forced lit is established to retain pin Ztl mounted to handle l2.
- Pin 2l is similarly mounted to handle l2 of circuit lbreaker lil by being entered into handle aperture 23 of circuit breaker lll from the right side thereof.
- pin 2l in engagement with end 3l of slot t7, moves within tie member i3, so that pin '2l is at end 32 ot slot 17.
- AIt is to be noted that the space between adjacent handles l2 is slightly lgreater than the rwidth of tie tmember 113. Further, the cooperation of tie member extension i4 and guide slot l5 ⁇ serves to maintain tie member 13 spaced from both handles 12. This insures that no binding action will take pla-ce between handles l2 ⁇ and tie member i3, so .that the handle of the tripped circuit breaker is free to moveto trip indicating position.
- this invention provides an inexpensive handle tie means, which permits the handle of the tripped circuit breaker to ymove to trip indicating position while the handle of the other circuit breaker remains in lthe ON position.
- the construction of the tie Imeans is such that it may be conveniently mounted in operative position by a simple pin means extending from the handles of adjacent circuit breakers.
- a first and a second circuit breaker arranged in adjacent side by side relationship with their operating handles in alignment; each of said handles being manually movable between a first and a second position to operate said circuit breakers ON and OFF, respectively; each of said handles being movable to a third position intermediate said irst and said second positions upon tripping of said circuit breakers; a handle tie positioned between said handles; means interconnecting said handle tie to said handles for simultaneous manual operation of both circuit breakers; said interconnecting means including individual unitary means mounted to each of said handles for loosely retaining said tie whereby the handle of one of said circuit breakers may move to its said third posi- Y tionrwhile the handle of lthe other of said circuit breakers remains in its said iirst position; said tie being continuously disposed in a plane parallel to the planes defined by the movement of said circuit breaker handles; said l handle tie comprising a slidably mounted blockdike member having ⁇ a projecting guide portion positioned within a slot defined
- a iirst and a second circuit breaker arranged in adjacent side by side relationship with their operating handles alignment; each of said handles being manually movable between a first and a second position to operate said circuit breakers ON and OFF, respectively; each of said handles being movable to a third position intermediate said irst and said second positions upon tripping of said circuit breakers; said first, second and third positions being arcuately disposed about a common pivot; a handle tie positioned between said handles; means interconnecting said handlev tie to s-aid handles for simultaneous manual operation of both circuit breakers; said interconnecting means including individual unitary means mounted to each off said handles for loosely retaining said tie whereby the handle of one of said cincuit breakers may move to its Isaid third position while the handle of the other of said circuit breakers remains in its said iirst position; said tie being continuously disposed in a plane parallel to the planes defined by the movement of said circuit breaker handles; said circuit breakers having portions cooperating to form means for
- each ot said handles being movable manually to an ON position and an v OFF position, each of said handles being movable automatically to a position intermediate said ON and OFF positions, said handles each being pivotally rotated in a first and a second plane respectively to said ON, O'FF and intermediate positions;
- said circuit breakers being arranged in adjacent side by side parallel relationship so that said lirst and second planes are parallel, said interconnecting assembly means comprising a handle tie disposed between said circuit breaker handles in a third plane parallel to said first and second planes, said tie including a positioning means engageable by cooperating means of said circuit breakers to maintain in the planar spacing between said tie and said circuit breaker handles, a tirst and a second unitary means to be attached to said iirst and second circuit breaker handles respectively, and including a portion projecting into cooperating means in said tie, said unitary means being the only members of said assembly means attached to said circuit breaker handles, said
- said tie including positioning means engageable by cooperating means of said circuit breakers to maintain the planar spac- ⁇ ting between said tie and said circuit breaker handles, a rst and a lsecond unitary pin to be attached to said first and second circuit breaker handles respectively, and including a porti-on projecting into cooperating means in said tie, said pins being the only members of said interconnecting 'assembly meansattached to said circuit breaker handles, said pins projecting portion engaging said cooperating means yot said tie to cause a movement of one of said circuit breaker handles to said ON or OFF position to be transmitted to the other of said circuit breaker handles, but permitting one of said circuit breaker handles to individually move to said intermediate position without effecting movement of the other of said circuit breaker handles, said ⁇ tie being constantly contained within said third plane during said movements, said interconnecting assembly means being removable from said circuit breaker handles by the removal of said pins, the removing and attaching of said pins being
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- Breakers (AREA)
Description
L. B. c'r'roN MOLDED HANDLE TIE Nov. 12, 1963 Filed OCT,- 31. 1960 INVENToR. fo/y 5 Carra/v I f77-fume? United States Patent() 3,110,779 MOLDED HANDLE Tm Leon B. Cotton, Drexel Hill, Pa., assigner to I-T-E Circuit Breaker Company, Philadelphia, la., a corporation of Pennsylvania Filed Oct. 3l, 196), Ser.. No. 65,979 6 Claims. (Cl. Zitti-Sti) This invention relates to circuit breakers of low current rating and more particularly to a novel molded handle tie whereby two adjacent circuit breakers may be manually operated and which permits the handle of a tripped circuit breaker to move to trip position while the handle of the other circuit breaker remains in the ON position.
Low current rated circuit breakers of the type customarily utilized in the home and for light industrial applications are often tied together for simultaneous manual operation. Circuit breakers of this type are manually operable between two extreme positions to open and close the circuit breaker. When the circuit breaker is tripped, there is biasing means which urges the operating handle to an intermediate position to indicate the tripped condition.
When a pair of circuit breakers protecting diflerent branch circuits are tied together for simultaneous operation, if a fault should develop in one of the branches, it is most desirable that the branch having the fault be readily determinable. This can best be done by observing the positions of the circuit breaker operating handles.
lf there is a rigid tie between the circuit breaker handles, should one of the breakers trip, its handle will remain in the ON position since the loading of the operating spring of the other circuit breaker cannot be overcome by the spring force of the tripped circuit breaker. Thus, it is necessary to provide a non-rigid type of connection between the operating handles of the circuit breakers in order that the handle of the tripped circuit breaker is free to move to trip indicating position while the handle of the other circuit breaker remains in the ON position.
The prior art has attempted to solve the above noted problem by providing overlapping handle extensions held by rivets, by providing a tie bar held by screws and brackets, by providing male and female handle extensions engaging each other with ample clearance, by providing a swiveling stepped cylindrical tie held in oversize holes in the handles, and by providing a cylindrical tie held by a loose bar disposed in handle apertures.
It is noted that each of these prior are devices consisted of many intricate parts and/ or required a good deal of labor in order to mount the parts to the circuit breakers.
Accordingly, it is a primary object of this invention to provide a handle tie means which is of extremely simple construction and which is readily mounted to the circuit breakers. This is accomplished by providing a simple molded member which is disposed in the space between adjacent circuit breaker handles. The molded member is provided with an elongated slot which receives pins extending from the sides of the circuit breaker handles. The elongated slot provides a lost motion connection between the tie member and the circuit breaker handles, so that the handle of the tripped circuit breaker may move to trip indicating position without causing movement of the handle of the other circuit breaker from the ON position.
The possibility of binding between the handles and the molded member is substantially eliminated by providing a molded member with an extension. This extension is disposed within a groove formed by cooperating formations of the adjacent circuit breakers, which forms means for guiding the molded member in its sliding movement and also maintains the molded member spaced from the handles.
@,l will@ Patented Nov. l2, i963 The pins in question are constructed of rolled sheet material. These pins are disposed within apertures in the handles and are force fitted therein.
Another object is to provide a handle tie means comprising a simple molded member.
Still another object is to provide a handle tie means which is secured to the circuit breaker handles by pins extending from these handles. These as well as other objects of this invention shall become readily apparent after reading the following description of the accompanying drawings in which:
FIGURE l is an end View of a pair of circuit breakers whose handles are tied together by a tie means constructed in accordance with the teachings of the instant invention.
FIGURE 2 is a fragmentary plan View of the circuit breakers of FIGURE l with the handles in the ON position.
FlGURE 3 is a View similar to FlGURE 2, with the handles of one circuit breaker in the ON position and the handle of the other circuit breaker in the trip position.
FIGURE 5 is an exploded perspective of the handle tie and securing means therefor.
Now referring to the iigures. Circuit breakers lll, il. are shown mounted adjacent to one another in side by side relationship. The circuit breakers are of the type fully described in U.S. Patent 2,773,949. As is well {nown to the art, when circuit breakers of this type are mounted within a panel board, they are maintained substantially in the positions illustrated in FIGURE 1. Each of the circuit breakers itl, il is provided with a manually operating handle l2, which projects from the top of the circuit breaker housing. Handle 12 is pivotable from the ON position to the OFF position. When the circuit breaker has tripped, the operating mechanism thereof biases handle l2 to a trip position which is intermediate the ON and OFF positions.
lt is readily seen that sliding movement of tie member I 13 brings about the simultaneous operation of circuit breakers liti, lll to the ON and OFF positions. That is, toy operate circuit breakers il?, ll to the ON position, pins 2t?, 21 are picked up by end El of slot i7, and to operate circuit breakers liti, il tothe OFF position, pins Ztl', 2l are picked up by end` 32 of slot 17. As best seen in FIG- URE 3, when one of the circuit breakers, in thisy case circuit breaker lit?, is tripped, the handle 12 thereof is free to lmove to trip indicating position. ln so doing, pin 2l, in engagement with end 3l of slot t7, moves within tie member i3, so that pin '2l is at end 32 ot slot 17. AIt is to be noted that the space between adjacent handles l2 is slightly lgreater than the rwidth of tie tmember 113. Further, the cooperation of tie member extension i4 and guide slot l5 `serves to maintain tie member 13 spaced from both handles 12. This insures that no binding action will take pla-ce between handles l2 `and tie member i3, so .that the handle of the tripped circuit breaker is free to moveto trip indicating position.
Thus, this invention provides an inexpensive handle tie means, which permits the handle of the tripped circuit breaker to ymove to trip indicating position while the handle of the other circuit breaker remains in lthe ON position. The construction of the tie Imeans is such that it may be conveniently mounted in operative position by a simple pin means extending from the handles of adjacent circuit breakers.
Although the invention herein has been described in connection with an exemplary embodiment, it i-s to be -understood that variations and modifications may be made therein without departing from the spirit and scope thereof, as define-d in the following claims.
l cla-im:
l. A first and a second circuit breaker arranged in adjacent side by side relationship with their operating handles in alignment; each of said handles being manually movable between a first and a second position to operate said circuit breakers ON and OFF, respectively; each of said handles being movable to a third position intermediate said irst and said second positions upon tripping of said circuit breakers; a handle tie positioned between said handles; means interconnecting said handle tie to said handles for simultaneous manual operation of both circuit breakers; said interconnecting means including individual unitary means mounted to each of said handles for loosely retaining said tie whereby the handle of one of said circuit breakers may move to its said third posi- Y tionrwhile the handle of lthe other of said circuit breakers remains in its said iirst position; said tie being continuously disposed in a plane parallel to the planes defined by the movement of said circuit breaker handles; said l handle tie comprising a slidably mounted blockdike member having `a projecting guide portion positioned within a slot defined by cooperating lformations of said circuit breakers. Y
2. A Iirst `and a second circuit breaker arranged in adjacent side by side relationship with their operating handles in alignment; each ot said handles being manually movable between a first and a second position to operate said circuit breakers ON and OFF, respectively; each of said handles being movable to a third position intermediate said lrst and said second positions upon tripping of said circuit breakers; a handle tie positioned between said handles; means interconnecting said handle tie to said handles vfor simultaneous manual operation of both circuit breakers; said interconnecting means including individual unitary means mounted to each of said handles for loosely retaining said tie whereby the handle ot one of said circuit breakers may move to its said third position while .the handles of the other of said circuit breakers remains in its said first position; said tie being continuously disposed 4in a plane parallel to the planes defined by the movement `ot said circuit breaker handles; said Vhandle tie comprising a slidably mounted block-like member; having a projectingguide portion to be operatively engaged by a cooperating slot formation ott said circuit breakers Whereby binding lis prevented between relative movement of said handle tic and said circuit breaker handles; said individual means comprisinga pin for eachod said handles; said pins projecting from said handles to one another `and being disposed within an elongated slot of said handle tie whereby said tie is reta-.ined in operative position; each of said pin-s comprising a tubular member force fitted within `an opening of said handle.
3. A iirst and a second circuit breaker arranged in adjacent side by side relationship with their operating handles alignment; each of said handles being manually movable between a first and a second position to operate said circuit breakers ON and OFF, respectively; each of said handles being movable to a third position intermediate said irst and said second positions upon tripping of said circuit breakers; said first, second and third positions being arcuately disposed about a common pivot; a handle tie positioned between said handles; means interconnecting said handlev tie to s-aid handles for simultaneous manual operation of both circuit breakers; said interconnecting means including individual unitary means mounted to each off said handles for loosely retaining said tie whereby the handle of one of said cincuit breakers may move to its Isaid third position while the handle of the other of said circuit breakers remains in its said iirst position; said tie being continuously disposed in a plane parallel to the planes defined by the movement of said circuit breaker handles; said circuit breakers having portions cooperating to form means for guiding movement of said handle tie and maintaining the sides of said handle tie spaced from the handles of said circuit breakers whereby binding is prevented between relative movement of said handle tie and said circuit breaker handles.
o a rst and a second circuit breaker, each ot said handles being movable manually to an ON position and an v OFF position, each of said handles being movable automatically to a position intermediate said ON and OFF positions, said handles each being pivotally rotated in a first and a second plane respectively to said ON, O'FF and intermediate positions; said circuit breakers being arranged in adjacent side by side parallel relationship so that said lirst and second planes are parallel, said interconnecting assembly means comprising a handle tie disposed between said circuit breaker handles in a third plane parallel to said first and second planes, said tie including a positioning means engageable by cooperating means of said circuit breakers to maintain in the planar spacing between said tie and said circuit breaker handles, a tirst and a second unitary means to be attached to said iirst and second circuit breaker handles respectively, and including a portion projecting into cooperating means in said tie, said unitary means being the only members of said assembly means attached to said circuit breaker handles, said unitary means projecting portion engaging said cooperating means of said tie to cause a movement of one of said circuit breaker handles to said ON or OFF postion'to be transmitted to the other of said circuit breaker handles, but permitting one of said circuit breaker handles to individually move to said intermediate position without effecting movement of the other of said circuit breaker handles, said tie being constantly contained within said third plane during said movements.
5. An asesmbly means for interconnecting the handles of a irst and a second circuit breaker, each of said handles being movable manually to an ON position and an OFF position, e-ach of said handles being movable auto matically to a position intermediate said ON and OFF positions; said handles each'beingpivotally rotated in a rst and a second plane respectively to said ON, OFF and intermediate positions; said circuit breakers being arranged in adjacent side by side parallel relationship so that said rst and second planes are parallel, said interconnecting assembly means comprising a handle tie disposed between said circuit breaker handles in a third AJ.. n). *i
plane parallel to said first and second planes, said tie including positioning means engageable by cooperating means of said circuit breakers to maintain the planar spac- `ting between said tie and said circuit breaker handles, a rst and a lsecond unitary pin to be attached to said first and second circuit breaker handles respectively, and including a porti-on projecting into cooperating means in said tie, said pins being the only members of said interconnecting 'assembly meansattached to said circuit breaker handles, said pins projecting portion engaging said cooperating means yot said tie to cause a movement of one of said circuit breaker handles to said ON or OFF position to be transmitted to the other of said circuit breaker handles, but permitting one of said circuit breaker handles to individually move to said intermediate position without effecting movement of the other of said circuit breaker handles, said `tie being constantly contained within said third plane during said movements, said interconnecting assembly means being removable from said circuit breaker handles by the removal of said pins, the removing and attaching of said pins being readily accomplished while said circuit breakers are stationary in said first and second planes.
6. An assembly means for interconnecting the handles of a first and a second circuit breaker', each off said handles being movable manually to an ON position Vand an OFF position, each of said handles being movable automatically to a position intermediate said ON and OFF position-s, said handles each being pivotally rotated in a first and a second plane respectively to said ON, OFF and intermediate positions, said circuit breakers being arranged in adjacent side by side parallel relationship so that said first and second planes are parallel, said interconnecting assembly means comprising a slidably mounted handle tie disposed between said circuit breaker handles in a third plane parallel to said first and second planes, said tie including a projecting positioning means engageable by cooperating slot means defined by housing :formations cf lsaid circuit breakers to maintain the planar spacing between said tie and said circuit breaker handles, a first and a second unita-ry pin to be attached to said first and second circuit breaker handles respectively, and including a portion projecting into cooperating means in said tie, said pins being the only members of said interconnecting assembly means attached to said circuit breaker handles, said pins projecting portion engaging said cooperating means of said tie to cause a movement of one of said circuit breaker handles to said ON or OFF position to be transmitted to the other of said circuit breaker handles, but permitting one of said circuit breaker handles to individually move to said intermediate position without eiecting movement of the other of said circuit breaker handles, said tie being constantly contained within said third plane during said movements.
References Cited in the tile of this patent UNITED STATES PATENTS 2,096,548 Jackson Oct. 19, 1937 2,277,645 Johnson Mar. 24, 1942 2,703,827 Gelzheiser Mar. 8, 19'55 2,773,949 Edmunds Dec. 1l, 1956
Claims (1)
1. A FIRST AND A SECOND CIRCUIT BREAKER ARRANGED IN ADJACENT SIDE BY SIDE RELATIONSHIP WITH THEIR OPERATING HANDLES IN ALIGNMENT; EACH OF SAID HANDLES BEING MANUALLY MOVABLE BETWEEN A FIRST AND A SECOND POSITION TO OPERATE SAID CIRCUIT BREAKERS ON AND OFF, RESPECTIVELY; EACH OF SAID HANDLES BEING MOVABLE TO A THIRD POSITION INTERMEDIATE SAID FIRST AND SAID SECOND POSITIONS UPON TRIPPING OF SAID CIRCUIT BREAKERS; A HANDLE TIE POSITIONED BETWEEN SAID HANDLES; MEANS INTERCONNECTING SAID HANDLE TIE TO SAID HANDLES FOR SIMULTANEOUS MANUAL OPERATION OF BOTH CIRCUIT BREAKERS; SAID INTERCONNECTING MEANS INCLUDING INDIVIDUAL UNITARY MEANS MOUNTED TO EACH OF SAID HANDLES
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65979A US3110779A (en) | 1960-10-31 | 1960-10-31 | Molded handle tie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65979A US3110779A (en) | 1960-10-31 | 1960-10-31 | Molded handle tie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3110779A true US3110779A (en) | 1963-11-12 |
Family
ID=22066461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US65979A Expired - Lifetime US3110779A (en) | 1960-10-31 | 1960-10-31 | Molded handle tie |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3110779A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3317683A (en) * | 1965-10-15 | 1967-05-02 | Ark Les Switch Corp | Electric switch with multiple contact actuator tie bar construction capable of multi- or single-switch selection |
| FR2639760A1 (en) * | 1988-11-28 | 1990-06-01 | Merlin Gerin | MODULAR CIRCUIT BREAKER EQUIPPED WITH AN AUXILIARY TRIP UNIT WITH INDEPENDENT OR AUTOMATIC RESET |
| US9947488B2 (en) | 2016-04-25 | 2018-04-17 | Abb Schweiz Ag | Electrical switch ganging system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2096548A (en) * | 1935-08-15 | 1937-10-19 | Square D Co | Circuit breaker |
| US2277645A (en) * | 1941-04-21 | 1942-03-24 | Arrow Hart & Hegeman Electric | Coupling for electric switch handles |
| US2703827A (en) * | 1952-10-31 | 1955-03-08 | Westinghouse Electric Corp | Circuit breaker |
| US2773949A (en) * | 1952-10-24 | 1956-12-11 | Ite Circuit Breaker Ltd | Circuit breaker tie bar |
-
1960
- 1960-10-31 US US65979A patent/US3110779A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2096548A (en) * | 1935-08-15 | 1937-10-19 | Square D Co | Circuit breaker |
| US2277645A (en) * | 1941-04-21 | 1942-03-24 | Arrow Hart & Hegeman Electric | Coupling for electric switch handles |
| US2773949A (en) * | 1952-10-24 | 1956-12-11 | Ite Circuit Breaker Ltd | Circuit breaker tie bar |
| US2703827A (en) * | 1952-10-31 | 1955-03-08 | Westinghouse Electric Corp | Circuit breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3317683A (en) * | 1965-10-15 | 1967-05-02 | Ark Les Switch Corp | Electric switch with multiple contact actuator tie bar construction capable of multi- or single-switch selection |
| FR2639760A1 (en) * | 1988-11-28 | 1990-06-01 | Merlin Gerin | MODULAR CIRCUIT BREAKER EQUIPPED WITH AN AUXILIARY TRIP UNIT WITH INDEPENDENT OR AUTOMATIC RESET |
| EP0371887A1 (en) * | 1988-11-28 | 1990-06-06 | Merlin Gerin | Modular breaker with an auxiliary tripping block with independent or automatic resetting |
| US9947488B2 (en) | 2016-04-25 | 2018-04-17 | Abb Schweiz Ag | Electrical switch ganging system and method |
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