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:
Oct. 02, 2012
Filed:
Jul. 01, 2008
Alain Cayre, Pamfou, FR;
Christophe Pieussergues, Nangis, FR;
Jackie Raymond Julien Prouteau, Villecresnes, FR;
Denis Jean Maurice Sandelis, Nangis, FR;
Alain Cayre, Pamfou, FR;
Christophe Pieussergues, Nangis, FR;
Jackie Raymond Julien Prouteau, Villecresnes, FR;
Denis Jean Maurice Sandelis, Nangis, FR;
Snecma, Paris, FR;
Abstract
An annular expansion ring centered on a main axis and suitable for being mounted on a fuel injector coaxial with the ring is disclosed. The ring presents holes that are distributed around the main axis and open out into its upstream face to enable air to pass towards the zone that is downstream from the ring. The ring includes a conical annular groove that converges downstream, that is open downstream, and that has the holes opening out into the upstream portion thereof. The axis of each of the holes makes an angle relative to the main axis that is strictly greater than the angle between the generator line of the cone defining the annular groove and the main axis, such that the air exiting from the holes impacts against the inner wall of the annular groove, i.e. its wall that is closer to the main axis.