Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Blade received in well or slot
Patent
1983-10-18
1985-03-05
Yuen, Henry C.
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Blade received in well or slot
F01D 508
Patent
active
045028419
ABSTRACT:
An axial locking device for blades of a fan, each blade including a root of dovetail or other re-entrant form engageable by axial sliding in corresponding grooves of the rim of the fan disc. A locking member is provided in the form of a key of parallelepiped form abutting the root of the blade. The key is locked against radially outward motion by a peripheral extension from one longer edge which engages a tab member having a portion which is secured to a front face of the fan rim. The key engages radial slots in the rim and in an alternative embodiment, the key is secured radially by a bolt which passes through a forward part of the rim, an end portion of the key and into a tapped bore of the main body of the rim.
REFERENCES:
patent: 2949278 (1960-09-01), McCormick
patent: 3656865 (1972-04-01), Spears
patent: 3734646 (1973-05-01), Perkins
patent: 3748060 (1973-07-01), Hugoson et al.
patent: 4033705 (1977-07-01), Luebering
Kwon John
S.N.E.C.M.A.
Yuen Henry C.
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