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:
Jun. 02, 2009
Filed:
May. 31, 2004
Applicants:
Kenichi Okamoto, Tokyo, JP;
Hiroshi Kigawa, Tokyo, JP;
Takashi Yumura, Tokyo, JP;
Tatsuo Matsuoka, Tokyo, JP;
Inventors:
Kenichi Okamoto, Tokyo, JP;
Hiroshi Kigawa, Tokyo, JP;
Takashi Yumura, Tokyo, JP;
Tatsuo Matsuoka, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B66B 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an elevator apparatus, a control device obtains car information including at least one of car position information and car speed information based on a main detection signal from a main sensor unit. An auxiliary sensor unit detects arrival of a car at a preset reference position with in a hoistway to generate an auxiliary detection signal. The control device makes corrections to the car information based on the auxiliary detection signal.