Patent ID: 9422840
Filing Date: 2016-08-23
CPC Classification: F01L,F16K

Claim Text:
1. A hydraulic valve for use with a cam phasing apparatus of an internal combustion engine, comprising: a bolt having a surface which provides a plurality of fluid ports; a spool disposed inside the bolt, said spool having two ends, and said spool configured to shift axially within the bolt and a plurality of band-shape check valves spaced apart from the ends of the spool and disposed radially between the spool and the bolt, wherein the bolt, the spool, and the band-shape check valves are configured to provide a fluid passageway between the spool and the cam phasing apparatus depending on a translational displacement of the spool, wherein the spool is further configured to limit compression of the band-type check valves when the band-type check valves open to allow flow into the bolt.