Motor control center units with retractable stabs and interlocks using portal shutters
US9531169B2 · kind B2 · utility
26Cited by
24References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2014 |
| Grant date | Dec 27, 2016 |
| Priority date | — |
| Expiry date | Nov 7, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B11/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Motor control centers have units or buckets with one or more sliding shutters that controllably block access to a stab isolation port based on position of the operator disconnect handle using attached cams that slide the shutter right and left. A front panel of the unit or bucket may also be configured to pivot out about a long axis associated with a bottom long side thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.