Propulsion of ships

Details Propulsion of ships Propulsion of ships

1981-10-21

1984-01-24

Blix, Trygve M.

Marine propulsion

Screw propeller

Having means to control flow around propeller

440 71, 416247A, 60221, B63H 516

Patent

active

044273932

ABSTRACT:
Propulsion unit for a marine vessel intended for operation under severe ice conditions comprises a multi-bladed propeller, which may be of fixed or controllable pitch, a stationary duct, which may take the form of a nozzle, within which the propeller runs and is protected peripherally against ice damage, and, at the forward and aft ends of the duct, water-guide members in the form of vanes and/or blades which are more massive than is required by their water-guiding functions and which restrict the size of ice masses that can encounter the propeller by entering the duct at its opposing ends. The duct may embrace the propeller peripherally around the full 360.degree.. The water-guide members may be secured at their outer ends to the duct and at their inner ends to ring members co-axial with the propeller. The upper quadrant of the duct may be secured to the hull of the vessel and the lowest portion of the duct to a skeg extending beneath the duct.

REFERENCES:
patent: 1065089 (1913-06-01), Wabo
patent: 3261544 (1966-07-01), Guichard
patent: 3389558 (1968-06-01), Hall
patent: 3457891 (1969-07-01), Clark et al.
patent: 4070984 (1978-01-01), Kappas
patent: 4106425 (1978-08-01), Gruber
patent: 4182118 (1980-01-01), Chronic
patent: 4309172 (1982-01-01), Narita et al.

Affiliated with

Also associated with

Rating

Propulsion of ships does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Propulsion of ships, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propulsion of ships will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1285277