Door mounted circuit breaker operating apparatus
US4612424A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1984 |
| Grant date | Sep 16, 1986 |
| Priority date | — |
| Expiry date | Oct 31, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2071/565
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention has an enclosure, a circuit breaker mounted inside the enclosure, and a hand lever rotatably mounted upon a door of the enclosure. A drive shaft is rotatably attached at a first end to the circuit breaker so that rotation of the drive shaft operates the circuit breaker. When the door is closed a second end of the drive shaft seats in a socket in the hand lever, and rotation of the hand lever rotates the drive shaft. A spring clip is mounted within the hand lever, and the spring clip grips the second end of the drive shaft so that force applied by the hand lever to rotate the drive shaft may deform the spring clip thereby permitting deflection in a coupling between the hand lever and the drive shaft. A retainer plate attached to the hand lever catches the drive shaft when the spring clip is deformed by the force and thereby prevents opening of the door as a safety measure. The drive shaft has a reduced cross-section region between the first end and the second end. An interlock is mounted in a fixed position with respect to the door of the enclosure, and when the door is closed the reduced cross-section region of the drive shaft is located within an opening of the inter…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.