Fluid reaction surfaces (i.e. – impellers) – Having positive means for impeller adjustment – Power or manual actuator on non-rotatable part
Patent
1980-02-25
1982-08-31
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Having positive means for impeller adjustment
Power or manual actuator on non-rotatable part
416168R, B63H 304
Patent
active
043470394
ABSTRACT:
A variable pitch propeller is disclosed having a crank arm attached to the shaft of each propeller blade and a telescoping drive arm having one end pivotally attached to the propeller hub and the other end pivotally attached to a control rod. The telescoping arm rotates the crank arm to adjust the pitch of the propeller blades through an angle substantially greater than 90.degree. as the control rod is moved longitudinally along the longitudinal axis of the hub of the propeller.
REFERENCES:
patent: 1435136 (1922-11-01), Hawes
patent: 2464991 (1949-03-01), Roby
patent: 2763329 (1956-09-01), Feroy
patent: 3912417 (1975-10-01), Herbert
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