Catchment mechanism to prevent camshaft over-rotation during closure in a direct-drive stored energy mechanism
US7449652B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2007 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Jun 6, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H71/503
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A catchment mechanism for an electrical switching apparatus operating mechanism is provided. The catchment mechanism includes a catchment wheel with a radially extending surface, a catchment prop, and a catchment prop reset pin. The catchment wheel rotates with the cam in the closing assembly as the closing springs are being charged. During the charging of the springs, the catchment prop stop edge travels over, but preferably does not engage, the wheel outer surface. When the closing springs are released, the catchment prop stop edge engages the catchment wheel radially extending surface thus causing the catchment wheel to stop rotating. As the catchment wheel is fixed to the cam shaft, the rotation of the cam shaft, and therefore the cam, is also stopped. The catchment wheel radially extending surface is positioned so that the cam is stopped in an appropriate position to begin recharging the closing spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.