Roller guide assembly featuring a combination of a solenoid and an electromagnet for providing counterbalanced centering control
US5810120A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1996 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Nov 5, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B7/044
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention provides a roller guide assembly for controlling the position of an elevator car in relation to guide rails of an elevator hoistway in an elevator system. The roller guide assembly includes at least one electromagnet means and at least one solenoid means. The at least one electromagnet means responds to an elevator car control signal from an elevator car controller, for providing at least one electromagnet force to adjust the position of the elevator car in relation to the guide rails of the elevator hoistway. The at least one solenoid means responds to the elevator car control signal, for providing at least one solenoid force that counterbalances said at least one electromagnet force for adjusting the position of the elevator car in relation to the guide rails of the elevator hoistway.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.