Controllable pitch marine propeller

Details Controllable pitch marine propeller Controllable pitch marine propeller

1987-08-03

1989-03-07

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Having positive means for impeller adjustment

Power or manual actuator on non-rotatable part

416146A, 416164, B63H 308, B63H 304

Patent

active

048101664

ABSTRACT:
A controllable pitch marine propeller comprises a hub body carrying a plurality of propeller blades for rotation about pivot axes disposed radially of the hub axis, a force rod extending into the hub body from the propeller shaft, and a cross-head affixed to the force rod and coupled to each propeller blade by a pin and slideway such that the propeller pitch is controlled by fore and aft movements of the force rod. The hub body has a tubular mount spigot that receives the aft end of the shaft with the shaft and mount spigot terminating aftward of the pivot axes of the blades. The cross-head is generally cup-shaped, having a base portion affixed to the force rod aftward of the pivot axes of the blades and a tubular portion extending forewardly from the base portion and surrounding aftward portions of the spigot in telescoping relation. The cross-head in supported in plain bearing relation by the hub body for fore and aft movements.

REFERENCES:
patent: 1008953 (1911-11-01), Clennell et al.
patent: 1133222 (1915-03-01), Bevis
patent: 1832075 (1931-11-01), Wilson
patent: 2360982 (1944-10-01), Sahle
patent: 2517714 (1950-08-01), Roesch
patent: 3232350 (1966-02-01), Lorenz
patent: 3501251 (1970-03-01), Haglund et al.
patent: 3802800 (1974-04-01), Merkx et al.
patent: 4028004 (1977-06-01), Wind
patent: 4599043 (1986-07-01), Muller

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