Charger for elevator call devices
US6408986B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2001 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Feb 26, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B1/461
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator capable of supplying electric power to accessory hall devices such as up/down elevator buttons and position indicators without requiring power supply lines between the cage and each hall. A drive battery which supplies electric power to hall devices provided in each hall and a receptor connected to the battery are provided on the hall. A feeder contactable with the respective receptors, a charging device that charges the battery via the feeder and receptor are provided on the top of the cage. When the charging voltage, for example, used in a hall of the floor drops below a predetermined voltage value, the cage stops automatically at the floor and the charger charges the drive battery in the hall of the floor via the receptors and feeder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.