Electric switchboard cell having a positioning drive for a movably arranged switchgear and locking device for switchboard cell door
US4754367A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 1986 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | Dec 10, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02B11/133
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric switchboard cell includes a positioning drive with a threaded spindle for a movably arranged switchgear and a door. At the bottom of the switchboard cell, a latch lever is pivoted which has a cam with which a guiding member of the positioning drive cooperates. The latch lever is pivoted by means of the cam, when the disconnect position of the switchgear is reached, into a position in which its locking projection is disengaged from a lock bracket attached to the door. The lock bracket is attached pivotally to a pillow block mounted to the door and can be disengaged from the locking projection by authorized personnel for defeating the locking device, e.g., for servicing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.