Fan blade assembly

Details Fan blade assembly Fan blade assembly

2005-06-14

2005-06-14

Nguyen, Ninh H. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

C416S500000

Reexamination Certificate

active

06905311

ABSTRACT:
A fan blade assembly (24) comprises a fan rotor (28) and a plurality of radially extending fan blades (30). The periphery (38) of the fan rotor (28) has a plurality of axially extending slots (40). Each of the fan blades (30) has a root portion (42), which locates in one of the slots (40) in the fan rotor (28). Each slot (40) has a slider member (50), which is locatable between the fan blade (30) root portion (42) and the bottom (31) of the slot (40). Each slot (40) has a spring (52), which is locatable between the fan blade (30) root portion (42) and the slider member (50). Each slot (40) has a wedge (54), which is locatable between the slider member (50) and the spring (52). The wedge (54) is movable axially between a first position in which the wedge (54) moves the spring (52) radially outwardly into engagement with the fan blade (30) root portion (42) to at least reduce vibration of the fan blade (30) and a second position in which the wedge (54) allows the spring (52) to move radially inwardly to allow assembly or disassembly of the fan blade (30).

REFERENCES:
patent: 3597112 (1971-08-01), Garten
patent: 4474535 (1984-10-01), Dhuic
patent: 4478554 (1984-10-01), Surdi
patent: 5236309 (1993-08-01), Van Heusden et al.
patent: 0 597 586 (1994-05-01), None
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patent: 1 533 564 (1978-11-01), None
patent: 2 021 206 (1979-11-01), None
patent: 2 038 959 (1980-07-01), None

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