Spring biased bayonet coupling for fan blades

Details Spring biased bayonet coupling for fan blades Spring biased bayonet coupling for fan blades

1984-10-05

1986-03-04

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Having positive means for impeller adjustment

Motor bodily rotatable with impeller hub or shaft

416167, 416205, 416209, F04D 2936

Patent

active

045738742

ABSTRACT:
Axial flow fan blade roots (1) are rotatably journalled to blade shafts (4) by bayonet plug and socket couplings. The socket recesses (30, 31) provide an axial play for the plug cam portions (28, 29). Screws (34, 35) extending through the blade root (1) have shoulders (43) abutting spring members arranged between the root and the shaft to thus bias the blade outwardly and establish frictional engagement between the bayonet coupling cam portions and recesses.

REFERENCES:
patent: 3810713 (1974-05-01), Joiner
patent: 3907460 (1975-09-01), Pedersen et al.
patent: 4046486 (1977-09-01), Kolb
patent: 4422826 (1983-12-01), Casacci et al.

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