US Patent 7909270 Valve assembly for an injection valve and injection valve

Patent 7909270 was granted and assigned to Continental Automotive on March, 2011 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Continental Automotive

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

79092700

Patent Inventor Names

Paolo Bertini0

Mauro Grandi0

Date of Patent

March 22, 2011

Patent Application Number

123270950

Date Filed

December 3, 2008

Patent Primary Examiner

‌

Darren W Gorman

Patent abstract

A valve assembly (80) of an injection valve (82) has a valve body (4) including a central longitudinal axis (L), the valve body (4) having a cavity (8) forming an inner surface (18) of the valve body (4), the cavity (8) having a fluid inlet portion (42), and a fluid outlet portion (44), a valve needle (10) axially movable in the cavity (8), the valve needle (10) preventing a fluid flow through the fluid outlet portion (44) in a closing position and releasing the fluid flow through the fluid outlet portion (44) in further positions, the valve needle (10) and/or the inner surface (18) of the valve body (4) having a surface layer (48) with a tungsten carbide layer (70) and a carbon layer (72).