Double reverse revolution propeller apparatus

Details Double reverse revolution propeller apparatus Double reverse revolution propeller apparatus

1987-05-26

1989-05-09

Basinger, Sherman D.

Marine propulsion

Screw propeller

Variable pitch

440 75, 440 81, B63H 2300

Patent

active

048285188

ABSTRACT:
A double reverse revolution propeller apparatus includes front and rear propeller wherein the rear propeller is rotated at higher speeds than the front propeller. When seizure occurs, an inner shaft is disconnected from an engine at an inner shaft connection unit and is connected to an outer shaft at an inner and outer shaft connection unit to be driven in the same direction as the outer shaft. The ratio of absorption horsepower of the front propeller to the rear propeller can to be substantially equal to the ratio of rotational speed of the front propeller to that of the rear propeller. One or both of the front and rear propeller can include a variable pitch propeller. The front propeller can have more blades than the rear propeller.

REFERENCES:
patent: 2196706 (1940-04-01), Naginskas
patent: 3967573 (1976-07-01), Charles et al.
patent: 4020781 (1977-05-01), Bellew
patent: 4619584 (1986-10-01), Brandt
patent: 4642059 (1987-02-01), Nohara

Affiliated with

Also associated with

Rating

Double reverse revolution propeller apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Double reverse revolution propeller apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double reverse revolution propeller apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-86788