EP1914771B1 - Closing spring assembly of switching mechanism for air circuit breaker - Google Patents
Closing spring assembly of switching mechanism for air circuit breaker Download PDFInfo
- Publication number
- EP1914771B1 EP1914771B1 EP07019929A EP07019929A EP1914771B1 EP 1914771 B1 EP1914771 B1 EP 1914771B1 EP 07019929 A EP07019929 A EP 07019929A EP 07019929 A EP07019929 A EP 07019929A EP 1914771 B1 EP1914771 B1 EP 1914771B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- closing spring
- switching mechanism
- closing
- spring seat
- 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.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims description 33
- 238000003825 pressing Methods 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
-
- 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
Definitions
- the present invention relates to a closing spring assembly of a switching mechanism for an air circuit breaker, and more particularly, to a closing spring assembly of a switching mechanism for an air circuit breaker which is capable of being simply produced with low cost.
- An air circuit breaker is a kind of low voltage circuit breaker, and generally includes a switching mechanism, a cradle supporting the switching mechanism and having a terminal connected to an external power source and a loadside conducting circuit, and a controller (so called 'an Over Current Relay') that is an electrical apparatus generating controlling signals which drive the switching mechanism to a breakage position in other words off position when occurring an over current by monitoring the current on the conducting circuit.
- a controller so called 'an Over Current Relay'
- the present invention relates to a closing spring assembly charging an elastic energy for contacting the movable contactor with a fixed contactor or providing a driving force which drives a movable contactor to a closing position by discharging the charged elastic energy, in the switching mechanism of the air circuit breaker.
- Such closing spring assembly includes one spring seat connected to the switching mechanism and supporting one end portion of a closing spring, the another spring seat supporting the other end portion of the closing spring, and the closing spring. And, in a related art, at least one of spring seats is produced by a molding process using a metallic die due to its complicated shape.
- the spring seat is formed of a metallic material in order to tolerate a storing elastic energy, but above fabrication method using the metallic die is not easy to be performed and increases in its production cost.
- US-A-5 856 643 discloses an auxiliary switch operator for a circuit breaker, which operates auxiliary contacts between open and closed positions.
- the auxiliary switch operator includes a hub which is biased to follow a pole shaft of the circuit breaker and follow the pole shaft when it rotates in a first direction to close separable contacts of the circuit breaker.
- a first spring mechanism biases the hub to follow the pole shaft when the pole shaft rotates in the first direction.
- an arm of the hub engages a rotatable shaft to drive an operating lever and operate the auxiliary contacts to the closed position.
- the pole shaft rotates in the second direction
- another arm of the hub recharges the first spring mechanism.
- a second spring mechanism biases the rotatable shaft and the operating lever toward a position corresponding to the open position of the auxiliary contacts when the pole shaft rotates in the second direction.
- the present inventors recognized the drawbacks of the related art described above. Based upon such recognition, the following features have been conceived.
- the present invention is directed to providing a closing spring assembly of a switching mechanism for an air circuit breaker comprising:
- a switching mechanism 1 of the air circuit breaker in accordance with the present invention is installed between a pair of side plates 2, and having a lower portion provided with a closing spring 3 providing a driving force for performing a closing operation of the switching mechanism and a supporting bracket 4.
- the closing spring assembly in accordance with the present invention includes at least one closing spring 3, wherein the closing spring 3 may be configured with a spring having a small diameter and another spring having a larger diameter for receiving the spring having the small diameter therein so as to increase an elastic driving force of the closing spring 3.
- a first spring seat member 7 included in the closing spring assembly in accordance with the present invention has one surface having, e.g., four protrusions, so as to support the one end portion of the closing spring 3 not to be separated. Also, the first spring seat member 7 has the other surface with opposite to the above surface, wherein the other surface is provided with a connection portion connected to the switching mechanism, and provides the driving force for closing by receiving the driving force for charging the closing spring 3 or discharging the charged elastic energy.
- the second spring seat plate 6 included in the closing spring assembly in accordance with the present invention has a front surface supporting the other end portion of the closing spring 3 and a rear surface at the opposite side thereof, wherein the front and rear surfaces are formed by a pressing. That is, as shown in Figure 3 , a plurality of protrusions 6a, 6b at the front surface and the rear surface are respectively formed to be respectively protruded towards the front surface and the rear surface by pressing a metallic plate formed of e.g., a steel material, which is cut to be flat.
- an insertion hole (reference numeral not given) of the second spring seat plate 6 also may be formed by a punching.
- a spring guide pin 5 included in the closing spring assembly in accordance with the present invention has both end portions connected to the first spring seat member 7 and the second spring seat plate 6, and is installed to penetrate the closing spring 3 so as to guide and support the closing spring 3. That is, under a state that the closing spring 3 is installed at circumference of the spring guide pin 5, one end portion of the spring guide pin 5 is inserted into a support recess portion (not shown) formed at the first spring seat member 7 to be supported, and the other end portion thereof is extended by passing through the insertion hole of the second spring seat plate 6 and compressed by the pressing so as to couple the spring guide pin 5 with the second spring seat plate 6.
- a supporting bracket 4 included in the closing spring assembly in accordance with the present invention supports the second spring seat plate 6 of the closing spring 3 of the switching mechanism 1 to be rotatable within a limited angle.
- the pair of protrusions 6b is provided on the rear surface of the second spring seat plate 6 for being supported by the supporting bracket 4, and the supporting bracket 4, as shown in Figure 5 , is provided with protrusion inserting holes 4b for inserting the protrusions 6b thereinto.
- the reason that the second spring seat plate 6 should be rotatable within the limited angle is that force may be applied to have an inclined angle, not applied horizontally, when the elastic energy is charged by the switching mechanism 1 or the elastic energy is provided by the closing spring 3.
- the rotation of the second spring seat plate 6 denotes the rotation in a vertical direction, not in a horizontal direction. And, the angle of the rotation is limited by a vertical height of the protrusion inserting hole 4b.
- the supporting bracket 4 is provided with protrusions 4a having curved surfaces for guiding the second spring seat plate 6 to be rotated within the limited angle.
- a steel plate having an oval shape is prepared, and plane cutout portions are formed to form six protrusions spaced to each other with a predetermined distance by the pressing.
- the front surface and the rear surface of the steel plate is respectively pressed at the same time so that two central cut-out portions are toward the rear surface and the rest four cut-out portions are toward the front surface among the cut-out portions at both sides of the steel plate. Accordingly, as shown in Figure 3 , an unfinished work of the second spring seat plate 6 is obtained. And, the central portion of the unfinished work is punched so as to form the insertion hole.
- the first spring seat member 7 having one surface provided with a protrusion supporting portion for preventing the spring from being separated and a spring guide pin supporting recess portion at the center thereof, and the other surface provided with a connecting recess connected to the switching mechanism 1 is prepared.
- one end portion of the spring guide pin 5 is inserted into the spring guide pin supporting recess portion of the first spring seat member 7 to be supported, and the other end portion of the spring guide pin 5 is inserted into the insertion hole of the second spring seat plate 6 under the state that the closing spring 3 is installed at the circumference of the spring guide pin 5.
- the closing spring assembly of the switching mechanism for the air circuit breaker in accordance with the present invention can be simply produced with low cost because the production of the spring seat and the coupling of the spring guide pin and the spring seat can be simply performed with the low cost by pressing.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Breakers (AREA)
Description
- The present invention relates to a closing spring assembly of a switching mechanism for an air circuit breaker, and more particularly, to a closing spring assembly of a switching mechanism for an air circuit breaker which is capable of being simply produced with low cost.
- An air circuit breaker is a kind of low voltage circuit breaker, and generally includes a switching mechanism, a cradle supporting the switching mechanism and having a terminal connected to an external power source and a loadside conducting circuit, and a controller (so called 'an Over Current Relay') that is an electrical apparatus generating controlling signals which drive the switching mechanism to a breakage position in other words off position when occurring an over current by monitoring the current on the conducting circuit.
- The present invention relates to a closing spring assembly charging an elastic energy for contacting the movable contactor with a fixed contactor or providing a driving force which drives a movable contactor to a closing position by discharging the charged elastic energy, in the switching mechanism of the air circuit breaker.
- Such closing spring assembly includes one spring seat connected to the switching mechanism and supporting one end portion of a closing spring, the another spring seat supporting the other end portion of the closing spring, and the closing spring. And, in a related art, at least one of spring seats is produced by a molding process using a metallic die due to its complicated shape.
- The spring seat is formed of a metallic material in order to tolerate a storing elastic energy, but above fabrication method using the metallic die is not easy to be performed and increases in its production cost.
-
US-A-5 856 643 discloses an auxiliary switch operator for a circuit breaker, which operates auxiliary contacts between open and closed positions. The auxiliary switch operator includes a hub which is biased to follow a pole shaft of the circuit breaker and follow the pole shaft when it rotates in a first direction to close separable contacts of the circuit breaker. A first spring mechanism biases the hub to follow the pole shaft when the pole shaft rotates in the first direction. When the pole shaft rotates in the first direction, an arm of the hub engages a rotatable shaft to drive an operating lever and operate the auxiliary contacts to the closed position. When the pole shaft rotates in the second direction, another arm of the hub recharges the first spring mechanism. A second spring mechanism biases the rotatable shaft and the operating lever toward a position corresponding to the open position of the auxiliary contacts when the pole shaft rotates in the second direction. - The present inventors recognized the drawbacks of the related art described above. Based upon such recognition, the following features have been conceived.
- Therefore, it is an object of the present invention to provide a closing spring assembly of a switching mechanism for an air circuit breaker which is capable of being simply produced with low cost.
- The present invention is directed to providing a closing spring assembly of a switching mechanism for an air circuit breaker comprising:
- at least one closing spring;
- a first spring seat member connected to the switching mechanism and for supporting one end portion of the closing spring;
- a second spring seat plate for supporting the other end portion of the closing spring, and having a front surface supporting the other end portion of the closing spring and a rear surface at an opposite side thereof, which are formed by pressing, respectively;
- a spring guide pin having both end portions connected to the first spring seat member and the second spring seat plate, and installed to penetrate the closing spring so as to guide and support the closing spring; and
- a supporting bracket for supporting the second spring seat plate of the closing spring of the switching mechanism to be rotatable within a limited angle.
- The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
- The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiment of the invention and together with the description serve to explain the principles of the invention.
- In the drawings:
-
Figure 1 is a perspective view showing an entire structure of a switching mechanism for an air circuit breaker including a closing spring assembly in accordance with the present invention; -
Figure 2 is a perspective view showing an assembled state of a second spring seat plate and a spring guide pin in the closing spring assembly of the switching mechanism for the air circuit breaker in accordance with the present invention; -
Figure 3 is a perspective view for describing a detailed configuration of the second spring seat plate in the closing spring assembly of the switching mechanism for the air circuit breaker in accordance with the present invention; -
Figure 4 is a perspective view showing an assembled state of a closing spring, a spring guide pin, a first spring seat and the second spring seat plate in the closing spring assembly of the switching mechanism for the air circuit breaker in accordance with the present invention; -
Figure 5 is a perspective view showing a front surface of a supporting bracket in the closing spring assembly of the switching mechanism for the air circuit breaker in accordance with the present invention; and -
Figure 6 is a perspective view showing a rear surface of the supporting bracket in the closing spring assembly of the switching mechanism for the air circuit breaker in accordance with the present invention. - Hereinafter, description will be given in detail of the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Referring to the drawings, like numerals indicate like elements and the same reference numerals appearing in more than one drawing figures refer to the same elements.
- As shown in
Figures 1 , aswitching mechanism 1 of the air circuit breaker in accordance with the present invention is installed between a pair ofside plates 2, and having a lower portion provided with aclosing spring 3 providing a driving force for performing a closing operation of the switching mechanism and a supportingbracket 4. - Meanwhile, referring to
Figures 2 to 4 , a closing spring assembly installed at the lower portion of theswitching mechanism 1 in accordance with the present invention will be described as follows. The closing spring assembly in accordance with the present invention, as shown inFigure 4 , includes at least oneclosing spring 3, wherein theclosing spring 3 may be configured with a spring having a small diameter and another spring having a larger diameter for receiving the spring having the small diameter therein so as to increase an elastic driving force of theclosing spring 3. - As shown in
Figure 4 , a firstspring seat member 7 included in the closing spring assembly in accordance with the present invention has one surface having, e.g., four protrusions, so as to support the one end portion of theclosing spring 3 not to be separated. Also, the firstspring seat member 7 has the other surface with opposite to the above surface, wherein the other surface is provided with a connection portion connected to the switching mechanism, and provides the driving force for closing by receiving the driving force for charging theclosing spring 3 or discharging the charged elastic energy. - The second
spring seat plate 6 included in the closing spring assembly in accordance with the present invention, as shown inFigures 3 and 4 , has a front surface supporting the other end portion of theclosing spring 3 and a rear surface at the opposite side thereof, wherein the front and rear surfaces are formed by a pressing. That is, as shown inFigure 3 , a plurality ofprotrusions Figure 3 , an insertion hole (reference numeral not given) of the secondspring seat plate 6 also may be formed by a punching. - A
spring guide pin 5 included in the closing spring assembly in accordance with the present invention has both end portions connected to the firstspring seat member 7 and the secondspring seat plate 6, and is installed to penetrate theclosing spring 3 so as to guide and support theclosing spring 3. That is, under a state that theclosing spring 3 is installed at circumference of thespring guide pin 5, one end portion of thespring guide pin 5 is inserted into a support recess portion (not shown) formed at the firstspring seat member 7 to be supported, and the other end portion thereof is extended by passing through the insertion hole of the secondspring seat plate 6 and compressed by the pressing so as to couple thespring guide pin 5 with the secondspring seat plate 6. - A supporting
bracket 4 included in the closing spring assembly in accordance with the present invention supports the secondspring seat plate 6 of theclosing spring 3 of theswitching mechanism 1 to be rotatable within a limited angle. - That is, the pair of
protrusions 6b is provided on the rear surface of the secondspring seat plate 6 for being supported by the supportingbracket 4, and the supportingbracket 4, as shown inFigure 5 , is provided withprotrusion inserting holes 4b for inserting theprotrusions 6b thereinto. Here, the reason that the secondspring seat plate 6 should be rotatable within the limited angle is that force may be applied to have an inclined angle, not applied horizontally, when the elastic energy is charged by theswitching mechanism 1 or the elastic energy is provided by theclosing spring 3. The rotation of the secondspring seat plate 6 denotes the rotation in a vertical direction, not in a horizontal direction. And, the angle of the rotation is limited by a vertical height of theprotrusion inserting hole 4b. - Meanwhile, in
Figure 5 or Figure 6 , the supportingbracket 4 is provided with protrusions 4a having curved surfaces for guiding the secondspring seat plate 6 to be rotated within the limited angle. - Referring to
Figures 2 through 6 , a fabrication method of the closing spring assembly of the switching mechanism for the air circuit breaker in accordance with the present invention will be described as follows. - First, a steel plate having an oval shape is prepared, and plane cutout portions are formed to form six protrusions spaced to each other with a predetermined distance by the pressing.
- The front surface and the rear surface of the steel plate is respectively pressed at the same time so that two central cut-out portions are toward the rear surface and the rest four cut-out portions are toward the front surface among the cut-out portions at both sides of the steel plate. Accordingly, as shown in
Figure 3 , an unfinished work of the secondspring seat plate 6 is obtained. And, the central portion of the unfinished work is punched so as to form the insertion hole. - And then, as shown in
Figure 4 , the firstspring seat member 7 having one surface provided with a protrusion supporting portion for preventing the spring from being separated and a spring guide pin supporting recess portion at the center thereof, and the other surface provided with a connecting recess connected to theswitching mechanism 1 is prepared. - Hereafter, one end portion of the
spring guide pin 5 is inserted into the spring guide pin supporting recess portion of the firstspring seat member 7 to be supported, and the other end portion of thespring guide pin 5 is inserted into the insertion hole of the secondspring seat plate 6 under the state that theclosing spring 3 is installed at the circumference of thespring guide pin 5. - And then, the other end portion of the
spring guide pin 5 passed through the insertion hole of the secondspring seat plate 6 is compressed by the pressing so that the secondspring seat plate 6 and thespring guide pin 5 are tightly coupled. - And then, the
protrusion 6b of the secondspring seat plate 6 is inserted into theprotrusion inserting hole 4b of the supportingbracket 4 to be supported, accordingly the production of the closing spring assembly in accordance with the present invention is completed. - As aforementioned, the closing spring assembly of the switching mechanism for the air circuit breaker in accordance with the present invention can be simply produced with low cost because the production of the spring seat and the coupling of the spring guide pin and the spring seat can be simply performed with the low cost by pressing.
- The foregoing embodiments and advantages are merely exemplary and are not to be construed as limiting the present invention. The present teachings can be readily applied to other types of apparatuses. This description is intended to be illustrative, and not to limit the scope of the claims. Many alternatives, modifications, and variations will be apparent to those skilled in the art. The features, structures, methods, and other characteristics of the exemplary embodiments described herein may be combined in various ways to obtain additional and/or alternative exemplary embodiments.
- As the present inventive features may be embodied in several forms without departing from the characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalents of such metes and bounds are therefore intended to be embraced by the appended claims.
Claims (5)
- A closing spring assembly of a switching mechanism (1) for an air circuit breaker comprising:at least one closing spring (3);a first spring seat member (7) connected to the switching mechanism (1) and for supporting one end portion of the closing spring (3);a second spring seat plate(6) for supporting the other end portion of the closing spring (3), and having a front surface supporting the other end portion of the closing spring (3) and a rear surface at an opposite side thereof, which are formed by pressing, respectively;a spring guide pin (5) having both end portions connected to the first spring seat member (7) and the second spring seat plate (6) respectively, and installed to penetrate the closing spring (3) so as to guide and support the closing spring (3); anda supporting bracket (4) for supporting the second spring seat plate (6) of the closing spring (3) of the switching mechanism (1) to be rotatable within a limited angle.
- The closing spring assembly of claim 1, wherein the second spring seat plate (6) is provided with a plurality of protrusions (6a, 6b) formed on the front surface so as to prevent the other end portion of the closing spring (3) from being separated.
- The closing spring assembly of claim 1, wherein the second spring seat plate (6) is provided with a pair of protrusions (6a, 6b) formed on the rear surface so as to be supported by the supporting bracket (4),
wherein the supporting bracket (4) is provided with a protrusion inserting hole portion so as for the protrusions to be inserted thereinto. - The closing spring assembly of claim 1, wherein the second spring seat plate (6) is provided with an insertion hole portion for inserting one end portion of the spring guide pin (5) thereinto.
- The closing spring assembly of claim 1, wherein the supporting bracket (4) is provided with protrusions having curved surfaces for guiding the second spring seat plate (6) to be rotated within a limited angle.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020060101054A KR100798339B1 (en) | 2006-10-17 | 2006-10-17 | A closing spring assembly of switching mechanism for an air circuit breaker |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1914771A2 EP1914771A2 (en) | 2008-04-23 |
EP1914771A3 EP1914771A3 (en) | 2009-09-16 |
EP1914771B1 true EP1914771B1 (en) | 2012-06-13 |
Family
ID=38984197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07019929A Active EP1914771B1 (en) | 2006-10-17 | 2007-10-11 | Closing spring assembly of switching mechanism for air circuit breaker |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1914771B1 (en) |
KR (1) | KR100798339B1 (en) |
CN (1) | CN101165833B (en) |
ES (1) | ES2389508T3 (en) |
MY (1) | MY153162A (en) |
RU (1) | RU2358350C1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101393806B (en) * | 2008-10-23 | 2010-09-01 | 浙江正昌锻造股份有限公司 | Fabrication process for energy storage spring conductor rod |
CN102496494B (en) * | 2011-11-24 | 2014-01-29 | 天津市百利电气有限公司 | Energy-storage spring mechanism of operating mechanism of circuit breaker and assembly method for energy-storage spring mechanism |
KR101180667B1 (en) | 2012-06-27 | 2012-09-07 | 주식회사 비츠로테크 | Power transfer switch |
US9276546B2 (en) * | 2014-02-21 | 2016-03-01 | Tyco Electronics Corporation | Electromagnetic interference filter assembly |
CN104021996A (en) * | 2014-06-19 | 2014-09-03 | 国网上海市电力公司 | Replacement device for switching-closing spring of circuit breaker |
CN109887797A (en) * | 2019-04-02 | 2019-06-14 | 惠州冠泰电子有限公司 | A kind of rocker switch |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2589626B1 (en) * | 1985-10-31 | 1989-03-03 | Merlin Gerin | CONTROL MECHANISM OF A CIRCUIT BREAKER EQUIPPED WITH AN ENERGY ACCUMULATING SYSTEM |
US5856643A (en) * | 1997-08-18 | 1999-01-05 | Eaton Corporation | Auxiliary contact operator for electrical switching apparatus |
CN1282209C (en) * | 2002-12-09 | 2006-10-25 | 三菱电机株式会社 | Air circuit breaker |
KR200340647Y1 (en) | 2003-11-10 | 2004-02-05 | 현대중공업 주식회사 | Press jig for trip spring of a air circuit breaker |
JP4463059B2 (en) | 2004-09-28 | 2010-05-12 | 三菱電機株式会社 | Vacuum circuit breaker |
US7294804B1 (en) * | 2007-03-29 | 2007-11-13 | Eaton Corporation | Energy dissipating spring seat |
-
2006
- 2006-10-17 KR KR1020060101054A patent/KR100798339B1/en active IP Right Grant
-
2007
- 2007-10-11 EP EP07019929A patent/EP1914771B1/en active Active
- 2007-10-11 ES ES07019929T patent/ES2389508T3/en active Active
- 2007-10-16 RU RU2007138408/09A patent/RU2358350C1/en active
- 2007-10-16 MY MYPI20071785A patent/MY153162A/en unknown
- 2007-10-17 CN CN2007101823241A patent/CN101165833B/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN101165833A (en) | 2008-04-23 |
KR100798339B1 (en) | 2008-01-28 |
RU2358350C1 (en) | 2009-06-10 |
ES2389508T3 (en) | 2012-10-26 |
CN101165833B (en) | 2012-01-11 |
EP1914771A3 (en) | 2009-09-16 |
EP1914771A2 (en) | 2008-04-23 |
MY153162A (en) | 2015-01-29 |
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