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:
Oct. 26, 2010
Filed:
Feb. 17, 2005
Harold Terry, Avon, CT (US);
Greg Schienda, Plantsville, CT (US);
Frank Sansevero, Glastonbury, CT (US);
Harold Terry, Avon, CT (US);
Greg Schienda, Plantsville, CT (US);
Frank Sansevero, Glastonbury, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An elevator system () includes a hoistway () having a plurality of cars () traveling therein, the hoistway includes a steel tape (), each car having two tape readers () which feed corresponding position detectors () to provide independent position signals (). A group controller () assigns calls in a fashion to avoid collisions. Controllers () for each car communicate with each other and when deemed necessary, either lower the speed, acceleration, deceleration of one or both of the cars, or stop (with or without reversing) one or both of the cars. Independent processors () will drop the brake () of either or both cars if they come within a first distance of each other, or will engage the safeties () of either or both cars if they come within a lesser distance of each other.