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:
Aug. 08, 2023
Filed:
Jun. 03, 2020
Safran, Paris, FR;
Ramzi Bohli, Moissy-Cramayel, FR;
Mirna Bechelany, Moissy-Cramayel, FR;
Didier Dangeul, Moissy-Cramayel, FR;
Didier Maurice Marceau Guerche, Moissy-Cramayel, FR;
Alain Armel Le Hegarat, Moissy-Cramayel, FR;
Ngadia Taha Niane, Moissy-Cramayel, FR;
SAFRAN, Paris, FR;
Abstract
A method for forming a wax model for the manufacture of turbine blades by lost-wax casting, in which a core is provided, a lower surface shell and an upper surface shell are positioned and bonded on either side of ducts of the core adjacent to the root, the core equipped with the lower surface shell and with the upper surface shell is positioned in an injection mold, wax is injected around the core equipped with the lower surface shell and with the upper surface shell, so as to form a wax model including a blade airfoil and a blade root including a fir tree, the lower surface shell and the upper surface shell being positioned around the core so as to form a portion of the fir tree of the wax model.