Composite blade

Details Composite blade Composite blade

2005-11-23

2010-11-23

Look, Edward (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Having wear liner, sheathing or insert

C416S09700R, C416S22900R

Reexamination Certificate

active

07837446

ABSTRACT:
A composite blade (28) comprises a root portion (38) and an aerofoil portion (40). The aerofoil portion (40) has a tip (50) remote from the root portion (38). The aerofoil portion (40) has a leading edge (42), a trailing edge (44), a suction surface (46) extending from the leading edge (42) to the trailing edge (44) and a pressure surface (48) extending from the leading edge (42) to the trailing edge (44). The composite blade (28) comprises reinforcing fibers (62) arranged in a matrix material (63). The tip (50) of the aerofoil portion (40) is arranged to define a recess (66), an insert (68) is arranged in the recess (66) and the insert (68) comprises an abradable material.

REFERENCES:
patent: 2344876 (1944-03-01), Jamison
patent: 4040770 (1977-08-01), Carlson
patent: 4480956 (1984-11-01), Kruger et al.
patent: 4685864 (1987-08-01), Angus et al.
patent: 5112194 (1992-05-01), More
patent: 5308228 (1994-05-01), Benoit et al.
patent: 6206642 (2001-03-01), Matheny et al.
patent: 871 066 (1961-06-01), None
patent: 1 260 484 (1972-01-01), None
patent: 1 291 718 (1972-10-01), None
patent: 1 311 806 (1973-03-01), None

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