Door device for an elevator
US7992688B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2006 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Dec 17, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B13/143
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A door device for an elevator includes an elevator door, first and second door drive devices having first and second rotating shafts, respectively, a power transmission mechanism that moves the elevator door according to rotation of the first and second rotating shafts, and a door control device that controls movement of the elevator door. The door control device includes a first processing device that performs first arithmetic processing for controlling the first door drive device, a second processing device that performs second arithmetic processing for controlling the second door drive device, and an information transmitting unit for information transmission between the first and second processing devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.