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:
Apr. 14, 2020
Filed:
Feb. 27, 2017
Safran Aircraft Engines, Paris, FR;
Safran, Paris, FR;
Patrick Emilien Paul Emile Huchin, Tessancourt sur Aubette, FR;
Matthieu Jean Luc Vollebregt, Asnieres sur Seine, FR;
Adrien Bernard Vincent Rollinger, Joinville-le-Pont, FR;
Mirna Bechelany, Courbevoie, FR;
SAFRAN AIRCRAFT ENGINES, Paris, FR;
Abstract
A core for casting a blade of a turbomachine, the core including a first part for defining a first cavity and a second part of which at least one portion defines a second cavity located between the first cavity and the tip of the blade. The portion of the second part includes a through-hole that ends opposite the first part so as to define, in the cast blade, an outer face of a duct for removing dust from the first cavity. An alumina pin which is secured to the end face of the first part extends into the through-hole to define the inner face of the duct. A centering sheath placed between the pin and the through-hole centers the pin in relation to the through-hole. The centering sheath is made of a material that is intended to dissolve before the blade is cast around the core.