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:
May. 11, 2004
Filed:
May. 13, 1999
Akihiko Hoshiba, Hamamatsu, JP;
Yasuo Suganuma, Hamamatsu, JP;
Yamaha Marin Kabushiki Kaisha, Shizuoka-ken, JP;
Abstract
An outboard motor has a lubricant pump driven by an engine. The lubrication pump circulates lubricant to moving components of the engine through at least one lubricant passage. A pressure sensor is provided along the lubricant passage. The pressure sensor outputs a signal to an evaluator to determine whether a low pressure situation indicative of a malfunction has occurred. An alarm is activated based upon the determination of a malfunction. Activation of the alarm may occur if the engine is not warmed-up, if the engine is operating at a steady speed or encountering slow speed changes or has encountered a rapid speed change for a predetermined period of time. In this manner, false alarms related to pressure variations within the lubricant system may be reduced.