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. 03, 2022
Filed:
May. 10, 2017
Mitsubishi Electric Corporation, Tokyo, JP;
Keita Mochizuki, Tokyo, JP;
Jin Inoue, Tokyo, JP;
Masahiro Ishikawa, Tokyo, JP;
Akihide Shiratsuki, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
An elevator car position detection device is provided capable of preventing erroneous detection of a metal object other than an object to be detected. The elevator car position detection device includes: an object to be detected provided in one of a hoistway and a car of an elevator, the object to be detected being formed of a magnetic body and having a slit-like opening; and a magnetic detection device provided in the other of the hoistway and the car of the elevator, the magnetic detection device being configured to detect a change in magnetic flux density according to the slit-like opening when facing the object to be detected.