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:
Aug. 23, 2011
Filed:
Oct. 06, 2004
Malcolm Lambert, Gillingham, GB;
Andrew Limmer, Sudbury, GB;
Mark Norman, Sudbury, GB;
Michael Mcloone, Sudbury, GB;
Malcolm Lambert, Gillingham, GB;
Andrew Limmer, Sudbury, GB;
Mark Norman, Sudbury, GB;
Michael Mcloone, Sudbury, GB;
Abstract
An injection nozzle for an internal combustion engine has a valve member () with a seating line () defining a seat diameter, the seating line () being engageable with a seating surface () to control fuel injection by the nozzle, in use. The seating line is defined by an annular ridge (), integrally formed with the valve needle (), so as to reduce variations in the seat diameter which would otherwise arise at manufacture due to contact between the valve needle () and the seating surface () in regions other than at the seating line. The invention provides an advantage in manufacture as repeatability and consistency of the geometry, and in particular the effective seat diameter, of nozzle products is improved.