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:
Dec. 27, 2016
Filed:
Jul. 10, 2015
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Inventors:
Yoshihide Sekiya, Chiryu, JP;
Shoji Ozaki, Toyota, JP;
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60T 7/04 (2006.01); B60T 13/72 (2006.01); B60T 13/66 (2006.01); B60T 17/02 (2006.01);
U.S. Cl.
CPC ...
B60T 13/72 (2013.01); B60T 7/042 (2013.01); B60T 13/662 (2013.01); B60T 17/02 (2013.01);
Abstract
The invention relates to a control device for an electrically-driven vacuum pump. The control device stops operation of an electrically-driven vacuum pump for generating negative pressure in a negative pressure chamber of a brake booster when the vacuum pump is operated and a gradient of increasing of a booster negative pressure representing a magnitude of a difference between pressure in the negative pressure chamber and the atmospheric pressure is smaller than or equal to a predetermined stop gradient threshold.