Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Adjustable
Patent
1978-07-14
1981-06-30
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Adjustable
416214R, 416239, F04D 2936
Patent
active
042759935
ABSTRACT:
A longitudinal extruded aluminum fan blade having an integral elongated shank extending from one blade end is connected to a pair of elongated mounting members having abutting surface portions in general conformance with and generally coextensive of respective top and bottom surface portions of the shank and having tapered portions overlying blade regions adjoining the shank with the blade regions being free of any connections extending therethrough to inhibit fatigue failure of the blade. The mounting members and the shank define a stem portion having one or more circumferential grooves and the stem portion is adapted to be attached in various pitch positions to a rotor having a flat surface. A coupling device includes a mounting saddle having a flat side abutting the flat rotor surface and an opposite side provided with curved ribs received in portions of the grooves. The coupling device further comprises one or more U-shaped clamps having intermediate curved portions disposed in other portions of the grooves and end portions connected to the rotor.
REFERENCES:
patent: 1530436 (1925-03-01), Strout
patent: 2350345 (1944-06-01), Freedman et al.
patent: 2563011 (1951-08-01), Dehnicke
patent: 2664961 (1954-01-01), Goede
patent: 2765859 (1956-10-01), Hartzell et al.
patent: 3545885 (1970-12-01), Killam
patent: 4053259 (1977-10-01), Bianchi
Powell Jr. Everette A.
Stanley Industrial Corporation
Yeager Arthur G.
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