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:
Nov. 01, 2011
Filed:
Jan. 28, 2009
Yasutaka Usukura, Saitama, JP;
Masahiko Tsuchiya, Saitama, JP;
Yasutaka Usukura, Saitama, JP;
Masahiko Tsuchiya, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
To determine a failure of a float switch for detecting whether or not the oil level is less than or equal to a predetermined oil level. A predetermined oil level OLth is set between a normal oil level and a minimum oil level in view of the fact that when the oil level in an oil pan is normal, the oil level is decreased from the normal oil level to the minimum oil level during a predetermined time period just after starting an engine. When a float switch is not changed from an OFF position to an ON position during the predetermined time period after starting the engine, it is determined that the float switch suffers a failure or the oil level is excessive.