Blade lock screw

Details Blade lock screw Blade lock screw

1992-09-16

1993-12-07

Brown, David H.

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received by continuous circumferential channel

411393, 411418, F01D 532

Patent

active

H00012580

ABSTRACT:
This disclosure relates to the blade lock that serves to secure the blades to the drum rotor of a compressor in a gas turbine engine that is characterized by its ease of removal upon disassembly. The blade lock consists of two components, a locking member that engages the surface of a shoulder formed in the drum of the drum rotor and a screw threadably engaging a threaded central bore formed in the locking member having a platen engaging the bottom surface of the recess to urge the locking member to bear against the shoulder and where the screw carries three equally spaced longitudinal slots formed around the periphery of the threaded portion of the threads of the screw.

REFERENCES:
patent: 1075710 (1913-10-01), Goodwin
patent: 3088708 (1963-05-01), Feinberg
patent: 3955898 (1976-05-01), Zaehring
patent: 4712957 (1987-12-01), Edwards et al.
patent: 4859149 (1989-08-01), McClain
Setko Set Screw catalog No. 19, Set Screw & Mfg. Co., Jun. 1956, front and back cover and p. 8.

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