Patent ID: 7500832
Filing Date: 2009-03-10
Classification: F01D

Abstract:
1. In a rotor for a turbine engine, said rotor including at least one rotor disc with blade mounting sections provided in the periphery of the rotor disc for receiving and mounting blades, the improvement comprising: an annular, continuous groove provided in said disc adjacent at least one end of said blade mounting sections; blade platforms having grooves in radial alignment with said annular groove; a plurality of plate structures adapted to be disposed and supported between said disc and said blades, and including opposing inner and outer edges located in said grooves to form an annular array of said plate structures; a plurality of lock notches formed in an outer wall of said annular groove; and said plate structures comprising a plate and an elongated locking pointer having an outer end supported on said plate at a location between said outer wall and said blade platform, and said locking pointer extending radically inwardly toward said outer wall, and said locking pointer extending axially away from said plate toward said outer wall and having a distal end which does not extend beyond said inner edge and which is engaged within a respective lock notch to maintain a circumferential position of said plate structures relative to said disc.