Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Including movement limit stop or damping means
Patent
1991-04-26
1993-08-31
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Including movement limit stop or damping means
416 51, 416 52, 416 46, 416 43, 416 89, 416 93A, 416136, 416139, 416167, B63H 106
Patent
active
052403742
ABSTRACT:
There is provided a self-actuating variable pitch marine propeller which incorporates two or more blades, each independently rotatable, relative to the propeller hub, between a first lower and a second higher pitch. The blades are preferably mechanically linked by coordinating means and are caused to move preferably by a combination of centrifugal force effect resulting from inertial mass means and the hydrodynamic forces acting upon the blade hydrodynamic surface. The rotation of the blades relative to the propeller hub is limited primarily as to speed of rotation by restricted viscous fluid flow damping means operably connected to the blades. In one preferred embodiment, the viscous flow means further acts as an initial restraint against all motion by closing off the viscous flow orifice until a certain minimum propeller rotational speed is achieved.
REFERENCES:
patent: 1389609 (1921-09-01), Weiher
patent: 1982170 (1934-11-01), Lansing
patent: 1986752 (1935-01-01), Rorvik
patent: 2054947 (1936-09-01), Riddle
patent: 2568214 (1951-09-01), Bennett
patent: 2682926 (1954-07-01), Evans
patent: 2694459 (1954-11-01), Biermann
patent: 2998080 (1961-08-01), Moore, Jr.
patent: 3177948 (1965-04-01), Reid
patent: 3231023 (1966-01-01), Marshall
patent: 3273656 (1966-09-01), Bird
patent: 3321023 (1967-05-01), Russell et al.
patent: 4419050 (1983-12-01), Williams
patent: 4792279 (1988-12-01), Bergeron
patent: 5022820 (1991-06-01), Bergeron
Look Edward K.
Magidoff Barry G.
Mattingly Todd
Nautical Development, Inc.
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