Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Blade received in well or slot
Patent
1990-09-25
1993-01-19
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Blade received in well or slot
416 93A, 416219A, 298896, B63H 120
Patent
active
051802864
ABSTRACT:
A propeller assembly which includes a barrel with replaceable blade assemblies secured within slots formed in the exterior of the barrel. The slots include a first slot section and a second slot section with the first slot section extending radially deeper than the second slot section. The blade assemblies include L-shaped locking members which slide within the slots formed within the barrel. The shorter leg of the locking members are secured within the deeper first slot sections while the longer leg extends longitudinally within the second slot section. The locking member preferably includes a dovetail cross-section member fixing the shorter leg member to the barrel so as to prevent both longitudinal, torsional and radial movement of the blade assemblies. The barrel is preferably formed of an aluminum material or, more precisely, an aluminum alloy having 60% to 95% essentially pure aluminum while the blade assemblies and securement members are formed of stainless steel. The barrel is preferably formed in an extrusion process with subsequent minor machining work. The barrel includes exhaust conduits as well as inner and outer concentric shell joined by spoke members which extend in a forward to aft direction. Securement of the leg members within the first slot section is achieved through use of a stud and nut assembly, a threaded bolt or a spring biased pin which can be disengaged upon insertion of a tool.
REFERENCES:
patent: 123274 (1872-01-01), McCay
patent: 335640 (1886-02-01), Simmons
patent: 390615 (1888-10-01), Nye
patent: 548655 (1895-10-01), Pagan
patent: 612598 (1898-10-01), Wanless
patent: 752670 (1904-02-01), Hamilton
patent: 1363660 (1920-12-01), Fleur
patent: 2781998 (1957-02-01), Barr
patent: 3021003 (1962-02-01), Bluck
patent: 3071195 (1963-01-01), Osmaston
patent: 3132698 (1964-02-01), Lesher
patent: 3246699 (1966-04-01), Jocz
patent: 3412611 (1968-11-01), Eccles et al.
patent: 3764228 (1973-10-01), Shook
patent: 3876331 (1975-04-01), Denherder et al.
patent: 4417852 (1983-11-01), Costabile et al.
patent: 4451205 (1984-05-01), Honda et al.
patent: 4483661 (1984-11-01), Manharth et al.
patent: 4566855 (1986-01-01), Costabile et al.
patent: 4756265 (1988-07-01), Lane
patent: 4767278 (1988-08-01), Enderlein, Jr.
patent: 4930987 (1990-06-01), Sthal
Lee Michael S.
Look Edward K.
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