Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Power or manual actuator on non-rotatable part
Patent
1989-02-07
1991-05-21
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Having positive means for impeller adjustment
Power or manual actuator on non-rotatable part
416212R, 416223R, B63H 106, B63H 308
Patent
active
050170902
ABSTRACT:
A propeller blade having (i) a planar configuration (ii) an inner end portion, (iii) an outer end portion, (iv) a relatively sharp, outwardly swept back leading edge portion, and (v) a cylindrical stub axially aligned with the plane of the blade and affixed to the inner end portion of the blade. Also described is a mechanism that enables the pitch of the blades to be adjusted by the operator through a continuum of positions ranging from fast forward to fast reverse so that the boat can be operated at a full range and variety of speeds, can be stopped rapidly, and can be maneuvered with precision. The mechanism can be used for operating flat-bottom boats ("mud boats") in swamps, shallow water, bayous, lakes, rivers and the like, and pass through wet mud and swampy marshes choked with mud or vegetation without excessively fouling the propellers. The mechanism can be serviced and repaired easily and quickly, and can be employed to operate small craft such as mud boats with a minimum loss of interior boat space.
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Look Edward K.
Nguyen Hoang
Sieberth John F.
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