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:
Aug. 17, 2021
Filed:
Mar. 26, 2019
Applicant:
Fuji Electric Co., Ltd., Kanagawa, JP;
Inventors:
Satoru Ozaki, Tokyo, JP;
Kenji Fujita, Chiba, JP;
Assignee:
FUJI ELECTRIC CO., LTD., Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E05F 15/00 (2015.01); E05F 15/73 (2015.01); B61D 19/02 (2006.01); E05F 15/40 (2015.01);
U.S. Cl.
CPC ...
E05F 15/73 (2015.01); B61D 19/026 (2013.01); E05F 15/40 (2015.01); E05Y 2900/51 (2013.01);
Abstract
A door control device includes: a speed control unit configured to perform speed control of an electric motor that drives a door; a speed detection unit configured to detect a speed of the door; and an obstruction detection unit configured to detect obstruction between the door and a door pocket, upon a value of the speed of the door detected by the speed detection unit decreasing by a first predetermined value or more with respect to a speed command value in the speed control during a door opening operation of the door.