Patent ID: 9528485
Filing Date: 2016-12-27
CPC Classification: F02M,F16L

Claim Text:
1. A coupling device configured to hydraulically and mechanically couple a fuel injector to a fuel rail of a combustion engine, the fuel injector having a central longitudinal axis, the coupling device comprising: a fuel injector cup configured to be hydraulically coupled on one end to a fuel rail of the combustion engine, and adapted on the other end to engage a fuel inlet portion of the fuel injector and attach to a plate element, the plate element configured to be attached to the fuel injector cup to retain the fuel injector in the fuel injector cup in a direction of the central longitudinal axis of the fuel injector, wherein the plate element comprises inner and outer surfaces, the inner surface defining a circular orifice, the inner surface having a shaped inner edge forming an inner upward facing circular shoulder, a circular ring element comprising inner and outer surfaces, the inner surface defining a circular orifice, a portion of the circular ring element outer surface adapted to contact the inner upward facing circular shoulder of the plate element, the circular ring element inner surface shaped to form an inner circular upward facing groove around the circular ring element orifice, a toric snap ring sized to extend around a fuel injector body to fit at least partially within a downward facing groove formed on an outside wall of the fuel injector body and fit at least partially within the upward facing groove of the inner surface of the circular ring element, wherein upon assembly around the fuel injector, the circular ring element is rotatable in a direction at least partially around the central longitudinal axis of the fuel injector.