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:
May. 07, 2013
Filed:
Sep. 18, 2007
Cheng-shuo Wang, Ellington, CT (US);
Arthur C. Hsu, South Glastonbury, CT (US);
Cheongsik Shin, Seoul, KR;
Hansoo Shim, Seoul, KR;
Seongrak Jeong, Seoul, KR;
Cheng-Shuo Wang, Ellington, CT (US);
Arthur C. Hsu, South Glastonbury, CT (US);
CheongSik Shin, Seoul, KR;
Hansoo Shim, Seoul, KR;
SeongRak Jeong, Seoul, KR;
Otis Elevator Company, Farmington, CT (US);
Abstract
A separation distance is maintained between a leading elevator car () and a trailing elevator car () traveling in the same direction in an elevator hoistway (). A shortest stopping distance (d) of the leading elevator car () and a normal stopping distance (d) of the trailing elevator car () are determined. The separation distance (d) is controlled such that a difference between the normal stopping distance (d) of the trailing elevator car () and the shortest stopping distance (d) of the leading elevator car () is greater than or equal to a threshold distance (d).