Swinging elevator hatchway door interlock
US6659514B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 4, 2001 |
| Grant date | Dec 9, 2003 |
| Priority date | — |
| Expiry date | May 4, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1084
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An electromechanical interlock for a swinging elevator door is disclosed. The interlock comprises a pivotal hook member that may be attached to a swinging elevator door. The hook has a beak end and may pivot between a locked and an unlocked position. Disposed on the beak end is an electrical conductor. When the interlock is in the locked position, the beak end engages a lug and the conductor contacts electrical contacts to complete an electrical circuit. A solenoid pivots the hook from a locked position to an unlocked position. The electromechanical interlock may be adapted for use with sliding elevator doors as well as swinging doors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.