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:
Jul. 13, 2021
Filed:
Nov. 14, 2018
Safran Aircraft Engines, Paris, FR;
Patrick Jean-Louis Reghezza, Moissy-Cramayel, FR;
Pierrick Charles Chevallier, Moissy-Cramayel, FR;
Simon Pierre Claude Charbonnier, Moissy-Cramayel, FR;
SAFRAN AIRCRAFT ENGINES, Paris, FR;
Abstract
An extraction device of a platform for holding a blade fitted with an upstream flange, out of a turbomachine rotor disc, and extraction method using the device. The device includes a handle fitted with a radial annular shoulder extended by a threaded pin, a proximal ring and a distal ring having a tube extended by a radial collar and a sleeve. The proximal ring is arranged around the pin, the tapped distal ring being screwed onto the other end of the pin and the sleeve being arranged around the two rings between their respective collars. Screwing of the handle results in moving the distal ring towards the proximal ring, radial deformation of the distal part of the sleeve against the flared part of the cylindrical orifice of the flange and its being joined to the latter. It is possible to conjointly extract the platform and the device from the disc.