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:
Apr. 19, 2011
Filed:
Mar. 25, 2008
Applicants:
Takuya Imai, Yamanashi, JP;
Tsunenori Senbongi, Yamanashi, JP;
Inventors:
Takuya Imai, Yamanashi, JP;
Tsunenori Senbongi, Yamanashi, JP;
Assignee:
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P 5/00 (2006.01); E05F 15/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device for controlling a speed of a door includes a detecting unit that detects a position of the door, and a control unit that controls the speed of the door in such a manner that an acceleration of the door becomes substantially zero at a point that is calculated based on the position. Thus, a target maximum speed of the door is adjusted depending on the remaining moving distance.