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:
Nov. 13, 2012
Filed:
Dec. 16, 2004
Richard N. Fargo, Plainville, CT (US);
Harold Terry, Avon, CT (US);
Frank M. Sansevero, Bolton, CT (US);
Boris Traktovenko, Avon, CT (US);
John Milton-benoit, West Suffield, CT (US);
David Sirag, Ellington, CT (US);
Arthur Hsu, South Glastonburg, CT (US);
John Ferrisi, Southington, CT (US);
Richard N. Fargo, Plainville, CT (US);
Harold Terry, Avon, CT (US);
Frank M. Sansevero, Bolton, CT (US);
Boris Traktovenko, Avon, CT (US);
John Milton-Benoit, West Suffield, CT (US);
David Sirag, Ellington, CT (US);
Arthur Hsu, South Glastonburg, CT (US);
John Ferrisi, Southington, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An elevator system () includes multiple elevator cars () within a hoistway (). Counterweights () are associated with the respective elevator cars () by load bearing members (). In some examples, different roping ratios are used for the load bearing members (). In some examples, the lengths of the load bearing members () are selected to allow contact between the counterweights () within the hoistway () and prevent contact between the elevator cars (). The difference in car and counterweight separation distances is greater than a stroke of a counterweight buffer plus an expected dynamic jump of the elevator cars. A disclosed example includes passages () through a portion of at least one of the elevator cars () for accommodating the load bearing member () of another elevator car () located beneath the elevator car () with the passages ().