Slot motor and circuit breaker including the same
US7348514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2006 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Apr 12, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2009/305
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit breaker includes fixed and movable contacts, an operating mechanism including a movable arm carrying the movable contact, an arc chute including a plurality of spaced apart first and second arc plates, and a slot motor. A slot motor structure is disposed about the contacts and a portion of the movable arm. An insulative housing at least substantially covers and insulates the slot motor structure from the movable arm and contacts. The insulative housing includes a base and a pair of arms disposed therefrom. Each of the arms includes a first portion disposed proximate the first arc plates and a second smaller portion disposed proximate the second arc plates. A space extending from the first portion, not occupied by the second portion, is generally occupied by a portion of the second arc plates. The second portion forms a debris shield between the second arc plates and the operating mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.