Moving contact and crossbar assembly for a molded case circuit breaker
US6252480A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 18, 2000 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Feb 18, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H77/102
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The circuit breaker of the present invention is a molded case circuit breaker 10 having a moving contact 42 and crossbar assembly comprising a crossbar 55 having a formation pivotally mounted in the circuit breaker housing 12 with the formation having two spaced apart sidewalls 842, with each sidewall 842 having a first cam surface 830, a cam node 832, a second cam surface 834 and a bearing surface 826. Mounted in the formation, between the sidewalls 842, is a moving contact arm assembly 811 that is mechanically coupled to the circuit breaker operating mechanism 40 and electrically coupled to the load terminal 16 of the circuit breaker 10. The moving contact and crossbar assembly 811 comprises a movable contact arm 45 coupled to a pivot pin 818 positioned between the sidewalls 842 and in rotational contact with a bearing surface 826 of each sidewall 842. The movable contact arm 45 is also provided with a roller pin 812 slidingly mounted in a slot in the arm with the roller pin 812 in operative contact with the first and second cam surfaces 830, 834 of the sidewalls 842. A contact arm pressure spring 816 is coupled to the pivot pin 818 and the roller pin 812 with the contact arm pre…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.