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:
Jan. 20, 2004
Filed:
May. 14, 2002
Akira Iijima, Fujisawa, JP;
Isuzu Motors Limited, Tokyo, JP;
Abstract
The present invention prevents abnormal wear of the friction surfaces surrounding the rocker arm, prevents poor lubrication when the engine is started at low temperature after a long period of shutdown, and improves reliability. A bag-shaped oil sump ( ) opening upward is provided in the middle part of the rocker arm main body ( ). A roller ( ) and a roller pin ( ) are provided inside the oil sump ( ) and when the engine stops, these are immersed in the oil in the oil sump ( ). When the engine stops, the area between the roller ( ) and the roller pin ( ) is lubricated. Further, when the engine is re-started after a long period of shutdown, until the oil has risen, the area between the roller ( ) and the cam ( ) can be lubricated using the oil adhering to the roller ( ). When the rocker arm ( ) oscillates downward, the oil in the oil sump ( ) is supplied from the oil exhaust ( ) by spraying towards the valve shaft end.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile