Variable pitch marine propeller system

Details Variable pitch marine propeller system Variable pitch marine propeller system

1987-04-06

1990-05-29

Peters, Jr., Joseph F.

Marine propulsion

Screw propeller

Variable pitch

416147, 416159, 416244B, B63H 300

Patent

active

049292013

ABSTRACT:
A variable pitch marine propeller comprising two removable symmetrical propeller blades with cylindrical bases each having a drive lug attached proximate the driving edge of the point of attachment of each blade. A coupling are associated with the drive lugs of the bases and structured to hold the blades by the bases to align and simultaneously rotate the pitch of the blades in equal and opposite directions in response to movement of the coupling. A hub sub-assembly encases the coupling and bases of the blades to allow the blades to pivot and assume a forward or rearward pitch. The hub sub-assembly has a front end, and a rear end capable of mounting onto a drive shaft. A spring is associated with the coupling to initially position said coupling in a position which holds the blades in a rear pitch configuration. A hydraulic piston system is associated with the coupling means to provide a predetermined fixed pressure on said coupling to alter the spacing pressure and move the coupling to a position which causes the blades to assume the desired forward or rearward blade pitch.

REFERENCES:
patent: 2742097 (1956-04-01), Gaston
patent: 2850106 (1958-09-01), Swan
patent: 2931443 (1960-04-01), Pehrsson
patent: 2955659 (1960-10-01), Daley
patent: 3138136 (1964-06-01), Nichols
patent: 3151597 (1964-10-01), Larsen

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