Variable-pitch propeller, especially for sport craft

Details Variable-pitch propeller, especially for sport craft Variable-pitch propeller, especially for sport craft

1998-11-02

2000-11-07

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Having positive means for impeller adjustment

Power or manual actuator on non-rotatable part

416167, 416168R, 416207, 416220A, 416244B, B63H 312

Patent

active

061427357

ABSTRACT:
A variable-pitch propeller, especially for a sport board, has angularly displaceable blade support plates which can be rotated about respective radial axes. The plates are provided with radially inwardly directed claws which engage in circumferential grooves of bases of the blades. The latter can have radial projections reaching beneath the claws. The resulting bayonet connection simplifies mounting and dismounting of the propeller blades even under water.

REFERENCES:
patent: Re12665 (1907-06-01), Perkins
patent: 4365937 (1982-12-01), Hiebert
patent: 5871335 (1999-02-01), Bartlett

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