Folding boat propeller

Details Folding boat propeller Folding boat propeller

1981-01-13

1982-12-21

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

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

416 43, 416166, 416212R, B63H 124

Patent

active

043647111

ABSTRACT:
A boat propeller with foldable blades, a so-called folding propeller, in which the mounting axes of the blades in the hub are inclined towards the rotational axis of the hub, so that the blades are movable between their folded and unfolded positions by rotating essentially one-half turn.

REFERENCES:
patent: 866369 (1907-09-01), Learnard
patent: 938291 (1909-10-01), Thompson
patent: 993126 (1911-05-01), Thompson
patent: 997884 (1911-07-01), Wells
patent: 2528609 (1950-11-01), Rouse
patent: 4140434 (1979-02-01), Bianchi
patent: 4242049 (1980-12-01), Forsling et al.

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