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. 22, 2009
Filed:
Feb. 28, 2005
Patrick W. Savage, Jr., Chillicothe, IL (US);
Daniel R. Ibrahim, Metamora, IL (US);
Patrick W. Savage, Jr., Chillicothe, IL (US);
Daniel R. Ibrahim, Metamora, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A fuel injector for a fuel system is disclosed. The fuel injector has a nozzle member and a needle valve member slidingly disposed with the nozzle member. The nozzle member has a tip portion, at least one orifice disposed at the tip portion, a base portion, and a female conical seating surface disposed at the base portion. The needle valve member has a tip end configured to selectively restrict fuel flow through the at least one orifice, a base end, and a male conical seating surface disposed between the tip end and the base end. The male conical seating surface is configured to engage the female conical seating surface to restrict fuel flow through the at least one orifice and has a hydraulic surface area greater than a hydraulic surface area of the base end of the needle valve member.