Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Sectional – staged or nonrigid working member
Patent
1978-06-15
1980-12-30
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Sectional, staged or nonrigid working member
416202, F04D 2938
Patent
active
042420466
ABSTRACT:
A sheet metal construction for a fan spider. The spider arms each carry an integral rib running centrally along the arm and each rib is flat on its upper surface to mount a fan blade. The novelty of the invention resides in canting forwardly the spider arms. Such canting reduces certain stresses in the fan, thereby reducing cost of manufacture.
REFERENCES:
patent: 2132133 (1938-10-01), Smith
patent: 3044557 (1962-07-01), Posh
patent: 3728043 (1973-04-01), Pratiniphi
patent: 3901625 (1975-08-01), Witzel
patent: 3914069 (1975-10-01), Arrington et al.
patent: 4037987 (1977-07-01), Charles et al.
patent: 4147471 (1979-04-01), Charles
Barton William D.
Hartley Donald J.
Matucheski Joseph V.
Spellman Michael T.
Yee Clifford S. L.
Greer, Jr. Thomas J.
Powell Jr. Everette A.
Wallace Murray Corporation
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