Folding boat propeller

Details Folding boat propeller Folding boat propeller

1975-07-23

1976-09-28

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Working member foldable, pivotable or collapsible to non-use...

416223R, B63H 124

Patent

active

039828530

ABSTRACT:
A folding boat propeller assembly having a hub and two blades. The radially inner portion of each blade is pivoted to the hub. Upon forward movement of the boat, the blades will automatically be pivoted rearwardly into a closed folded-together position by water resistance. Upon rotation of the hub by the boat's engine, the blades pivot outwardly and forwardly to a driving position.

REFERENCES:
patent: 866369 (1907-09-01), Learnard
patent: 1835284 (1931-12-01), Crowhurst
patent: 2198475 (1940-04-01), Dorner
patent: 2532371 (1950-12-01), Petersen
patent: 3255826 (1966-06-01), Beck
patent: 3715171 (1973-02-01), Kettner
patent: D203780 (1966-02-01), Beck

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