Variable pitch propeller for watercraft

Details Variable pitch propeller for watercraft Variable pitch propeller for watercraft

1989-01-11

1990-10-23

Peters, Jr., Joseph F.

Marine propulsion

Screw propeller

Variable pitch

416166, 416162, B63H 308

Patent

active

049648225

ABSTRACT:
A watercraft has a hull and a hollow support body secured below the hull. A propeller drive shaft is disposed rotatably in the body with one end extending out of the body and is adapted for connection to a driving engine. A main bearing for the drive shaft is disposed in the body, the shaft extending through the bearing. A variable pitch propeller has a hub and a plurality of variable pitch propeller blades. The hub is secured to the shaft. A plurality of adjusting elements are mounted in the hub parallel to the shaft, each element being secured to a corresponding blade for varying the pitch thereof. A coupling is slidably disposed along the shaft in the support body with a rotatable first section secured to the hub and a non-rotatable first section spaced from the shaft and having bearing means in which the first section is rotatably supported. The adjusting elements are secured to the first section whereby movement of the second section back and forth along the shaft appropriately adjusts the pitch of the blades. An adjusting rod linkage is disposed in the body and is secured to the second section for moving the second section.

REFERENCES:
patent: 2704991 (1955-03-01), Danielson
patent: 4599043 (1986-07-01), Mueller

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