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:
Sep. 23, 2003
Filed:
Jul. 10, 2002
Applicant:
Inventors:
Masayuki Saruwatari, Atsugi, JP;
Junichi Furuya, Atsugi, JP;
Assignee:
Unisia Jecs Corporation, Atsugi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 9/08 ;
U.S. Cl.
CPC ...
F02D 9/08 ;
Abstract
In a negative pressure actuator which is provided with a negative pressure tank storing an intake negative pressure of an engine, and operated by a negative pressure stored in said negative pressure tank as a power source, an operating possible time of the negative pressure actuator is calculated based on an intake negative pressure, the operation of the negative pressure actuator is permitted when it is within the operating possible time, while the operation of the negative pressure actuator is prohibited when it is over the operating possible time.