The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 1998
Filed:
Nov. 05, 1996
Eric K Jamieson, Farmington, CT (US);
Dang V Nguyen, East Hartford, CT (US);
Kelly H Schaefer, Hartford, CT (US);
Otis Elevator Company, Farmington, CT (US);
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.