Marine propulsion – Screw propeller – Variable pitch
Patent
1979-06-19
1980-11-04
Blix, Trygve M.
Marine propulsion
Screw propeller
Variable pitch
416149, 416166, 416137, B63H 302
Patent
active
042313171
ABSTRACT:
The invention relates to a boat propeller having rotatably journalled blades in its hub to enable shifting between forward and reverse without reversing the direction of rotation. The hub is rotatably journalled on the propeller shaft and contains a transmission between the shaft and the blades. The transmission can be coupled between positions for forward, reverse and neutral. The invention uses the torque of the motor and the reaction moment of the water against the blades to achieve a relative rotation between the shaft and the hub, whereby the transmission turns the blades to one of two stops, which define the positions for forward or reverse.
REFERENCES:
patent: 3275083 (1966-09-01), Allin
patent: 3302725 (1967-02-01), Brimble et al.
patent: 3534703 (1970-10-01), Eckman
patent: 3552348 (1971-01-01), Shima
Brandt Lennart H.
Mansson Staffan T.
AB Volvo Penta
Blix Trygve M.
Sotelo Jesus D.
LandOfFree
Boat propeller device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Boat propeller device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boat propeller device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1639637