Research/Patents/US 5611389
US 5611389

PROCEDURE FOR THE FABRICATION OF CRYSTALLINE BLADES

Assignee

SOCIETE NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION

Filed

Dec 30, 1981

Granted

Mar 18, 1997

Location

LA VILLE DU BOI FR

Abstract

The method for the fabrication of a crystalline blade comprised of two shoulders enclosing an airfoil form which comprises arranging the shells of a mold in a manner such that the shoulders are parallel to the plane of a grain selection baffle that empties into a junction that moves the grain to the two shoulders, and feeding the mold through gates at the upper ends of the shoulders.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Aug 13, 1982

Rescinded

Oct 27, 1995

Duration

13 years, 2 months

Inventor

  • 1MARTIAL G. ALESSANDRI

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records