Multi-pole circuit breaker
阅读：310发布：2021-12-22
专利汇可以提供Multi-pole circuit breaker专利检索，专利查询，专利分析的服务。并且A multi-pole circuit breaker is disclosed which allows selective manual making and breaking of contacts within the breaker and automatic simultaneous breaking of all breaker contacts whenever a current overload condition occurs at any of the poles of the circuit breaker. The selective and automatic breaking function is accomplished by an interlocking trip shoe assembly comprised of a number of trip levers associated, one each, with a pole of the circuit breaker. Each trip lever is cammed by the movement of the movable contact associated with one of the poles in response to an overload condition at this pole to actuate the armatures associated with the other of the poles to open all other breaker contacts. When the circuit breaker switch associated with one of the poles is moved to an ''''off'''' position, a camming member is shifted to a cut away portion of the trip lever such that the trip lever is not cammed when the movable contact swings away from the fixed contact. This permits the breaking of the contacts of one pole without breaking of the contacts associated with the other of the poles. The breaker is provided with vent channels for venting arcing gases and a fine mesh screen in front of the vent channels which acts as a flame arrestor to prevent explosions.，下面是Multi-pole circuit breaker专利的具体信息内容。
1. A trip lever for use with a multi-pole circuit breaker comprising: a bar having a recess partially therethrough at one end; a support secured to said bar; means for pivoting said support about a predetermined axis; a cam follower located on said support at an end opposite that secured to said bar, said cam follower having a portion thereof cut away; and a linkage carried by said bar, a portion of said linkage adapted to engage a similar trip lever through its recess.
2. The apparatus according to claim 1 wherein said bar is an elongated cylinder and wherein said support includes a pair of arms secured at one end to opposite ends of said cylinder, said arms each having a bore centered about the intersection of said predetermined axis with the arm, one of said arms carrying said cam follower at its extremity.
3. The apparatus according to claim 2 wherein said portion of the linkage means adapted to engage a similar trip lever includes a pin coaxial with said cylinder and extending from said cylinder a distance sufficient to engage the receSs of an adjacent trip lever.
4. In a modular multi-pole electronic circuit breaker assembly having an individual switch to manually control the conduction state of an associated module, of the type in which each module includes circuit breaking apparatus having an arm carrying a movable contact which is moved away from a corresponding fixed contact responsively to an overcurrent condition, apparatus in each module for automatically tripping the circuit breaking apparatus in the other modules responsively to an overcurrent condition and for permitting manual control of the conduction state of one module without affecting the conduction states of the other modules comprising: a camming member moving with said arm; a trip lever including a bar coacting with said circuit breaking apparatus to trip said apparatus, a separable interlocking linkage member carried by said trip lever adapted to engage a second trip lever of an adjacent module and to coact with said second trip lever for tripping the adjacent circuit breaking apparatus by imparting to said second trip lever a like movement to that of said first mentioned trip lever, a support having an end secured to said bar and having a cam follower at the other end, and means for pivotally mounting said trip lever such that when said switch provides for conduction of said module the associated camming member is in a position to coact with the associated cam follower to rotate said trip lever about its pivot, said cam follower having a cut away portion positioned such that when said switch manually provides for the nonconduction of said module, said camming member is out of engagement with said cam follower, thereby preventing coaction.
5. The apparatus according to claim 4 wherein said circuit breaking apparatus includes electromagnetic means for sensing current overload.
6. The apparatus according to claim 5 wherein said interlocking linkage member includes a pin extending from said bar, said bar having a bore adapted to receive a pin from an adjacent trip lever.
7. The apparatus according to claim 6 wherein said bar, support and cam follower are of unitary construction.
8. The apparatus according to claim 4 and further including a vent channel through each module adjacent the module contacts and a flame arresting mesh screen positioned at said vent channel for preventing the venting of flame through said vent channel.
9. The apparatus according to claim 8 wherein the effective mesh size of said screen is no larger than 30.
10. The apparatus according to claim 9 wherein said mesh size is 60.
11. The apparatus according to claim 8 wherein said mesh screen closes off the interior end of said vent channel and further including means for electrically insulating said screen from said module.
12. The apparatus according to claim 4 and further including a plurality of vent channels through each module adjacent the module contacts, selected vent channels closest to said contacts when said contacts are in a mating condition being sloped downwardly and flame arresting means positioned at said vent channels for preventing the venting of flame from said channels in the event of contact arcing.
13. In a multi-pole circuit breaker of the type including a plurality of modules having circuit breaking means including a pair of contacts which are opened responsively to the sensing of an overload current by the movement of an armature and means for normally opening and closing said contacts, the improvement for use with selected modules comprising: a trip lever including a bar having a recess and linkage means secured to said bar adapted to engage the trip lever of an adjacent module through its recess, said bar coacting with said armature to actuate it; a support having an end secured to said bar; a cam follower at the end of said support opposite the end secured to said bar, said cam follower having a cut away portion; a camming member moving with one of said contacts; and means for pivoting saId support about a predetermined axis and for locating said cam follower with respect to said camming member such that when said contacts are manually opened, said camming member lies within said cut away portion out of engagement with said cam follower for preventing actuation of the armatures in any of the modules, and such that when said contacts are manually closed and when said contacts are opened responsive to overload current therethrough, said camming member coacts with said cam follower to move said trip lever for actuation of the armatures in other modules.
14. The circuit breaker according to claim 13 wherein each module includes a housing having a vent channel through one of the housing walls and a spark arresting mesh screen positioned so as to partially occlude said vent channel.
15. A multi-pole circuit breaker comprising: a plurality of modules, each of said modules including a pair of terminals, switch means for connecting said terminals, means for sensing an overload current through said switch means, an armature movable responsively to the sensing of said overload current, means for opening said switch means responsive to the movement of said armature, a camming member carried by said switch opening means, and a trip lever; selected trip levers including: a bar coacting with an armature for the actuation thereof, a linkage member secured to said bar and adapted to engage the trip lever of an adjacent module; a support having an end secured to said bar, a cam follower at the end of said support opposite the end secured to said bar, said cam follower having a cut away portion; means for manually opening and closing said switch means; and means for pivoting said support about a predetermined axis and for locating said cam follower with respect to said camming member such that when said switch means is manually opened, said camming member lies within said cut away portion out of engagement with said cam follower for preventing actuation of the armatures in any of the modules, and such that when said switch means is manually closed and when said switch means is opened responsively to overload current, said camming member coacts with said cam follower to move said trip lever for actuation of the armatures in other modules.
16. The apparatus of claim 15 wherein said bar is an elongated cylinder and wherein said support includes a pair of arms secured at one end to opposite ends of said cylinder, said arms each having a bore centered about the intersection of said predetermined axis with the arms, one of said arms carrying said cam follower at its extremity.
17. The apparatus according to claim 16 wherein said cylinder includes a bore and wherein said linkage member includes a pin coaxial with said cylinder and extending from said cylinder a distance sufficient to engage the bore of an adjacent trip lever.
18. A multi-pole circuit breaker comprising: a plurality of modules, each of said modules including a housing having an interior chamber, a pair of terminals passing through said housing, switch means carried within said housing for connecting said terminals, said housing having a vent channel communicating with said chamber adjacent said switch means and a screen positioned at said vent channel for preventing flame from exiting said vent channel, means for sensing an overload current through said switch means; an armature movable responsively to the sensing of said overload current, means for opening said switch means responsive to the movement of said armature; a camming member carried by said switch opening means, and a trip lever; selected trip levers including: a bar coacting with said armature, a linkage member secured to said bar and adapted to engage the trip lever of an adjacent module, a support secured to said bar, a cam follower at the end of said support opposite the portion secured to said bar, said cam follower having a cut away portion; means for manually opening and closing said switch means; and means for pivoting said Support about a predetermined axis and for locating said cam follower with respect to said camming member such that when said switch means is manually opened said camming member lies within said cut away portion out of engagement with said cam follower for preventing actuation of the armatures in any of the modules, and such that when said switch means is manually closed and when said switch means is opened responsively to overcurrent therethrough, said camming member coacts with said cam follower to move said trip lever for actuation of the armatures in the other of said modules.
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
| 一种水泥生产用的原料筛选烘干一体化装置 | 2020-05-11 | 592 |
| 小麦不完善粒标准样品及其制备方法 | 2020-05-12 | 707 |
| 一种细筛自循环磨选及选矿方法 | 2020-05-12 | 29 |
| 一种基于图像的物体分类方法、系统和电子设备 | 2020-05-08 | 315 |
| 一种用于脐疗治疗慢性鼻炎的中药组合药物及其制备工艺 | 2020-05-13 | 829 |
| 一种富含柚皮丁的山楂糕的制备方法 | 2020-05-12 | 953 |
| 一种滚筒筛 | 2020-05-11 | 294 |
| 一种塑料颗粒筛选用振动筛 | 2020-05-11 | 793 |
| 便于覆膜砂快速冷却的出料系统 | 2020-05-08 | 406 |
| 一种石英砂烘干装置 | 2020-05-13 | 375 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。
分析报告
专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。
细筛热门专利
QQ群二维码
意见反馈
意见反馈