Marine propulsion – Paddle wheel – Having means to retract paddle or change paddle attitude
Reexamination Certificate
2000-07-20
2001-05-01
Basinger, Sherman (Department: 3617)
Marine propulsion
Paddle wheel
Having means to retract paddle or change paddle attitude
C244S009000, C244S019000, C244S070000, C416S110000
Reexamination Certificate
active
06224441
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the invention
This invention relates generally to improvements in propeller systems, and more particularly it pertains to a new method and system for developing a propulsive force in a gaseous or liquid fluid and can be used for propulsion or sustaining aircraft, marine vessels, and different types of land vehicles, such for example, as snowmobiles, etc. Numerous other applications can be derived from the use of this invention, for example in designing apparatus for moving gaseous or liquid fluids such as fans, pumps. etc.
2. Description of the Prior Art
Historically, various propeller or peddler systems have been developed for propulsion of different types of vehicles by movement of water or air in opposite direction to the movement of the vehicle. Numerous patents and researches have been devoted to the problem of optimizing cyclic variations of the orientation of the individual blades in a propulsion system wherein the blades are pivoted to their respective optimum angle of incidence.
Some of such systems utilize rotation of propeller blades or paddles not only around the axis of the propeller shaft but also around a complementary axes of rotation for more effective exerting propulsive force. The basic concepts presented in these systems is that the usable propulsive force is developed as a result of rotating the propeller blades around two axes of rotation with variable orientation of the rotated propeller blades relative to the propeller shaft.
Propulsion apparatus are known wherein the propeller blades are oriented and rotated in the planes parallel to the driving shaft (U.S. Pat. No. 3,270,820 to Frazier, British patent 217,223 to Pensovecchio). However, such systems with only two blades mounted in a plane perpendicular to the propeller shaft have low efficiency and irregular power consumption. Different combinations of such propulsion apparatus are cumbersome and the mechanisms employed to effect their operations are far too complicated to render them practical, For these reasons, a limited success has been obtained by such type of apparatus.
The invention seeks to overcome the deficiencies of known propeller systems and to benefit from the advantages that may be expected from the new method and system.
The object of the invention is to provide a propulsion system with improved energy efficiency and maximum usable propulsive force.
BRIEF SUMMARY OF THE INVENTION
The invention is based on my discovery that a propulsive force in a liquid or gaseous fluid can be developed by rotating a propeller shaft with four generally flat propeller blades rotatably mounted on two intercrossed axles which are perpendicular to each other and are fixed to the propeller shaft in a plane perpendicular to its axis. The propeller blades are oriented so that the surface of each propeller blade is lying in a plane perpendicular to the axle on which it is mounted. The blades are connected with each other in such a way that when two parallel propeller blades on one of the intercrossed axles are oriented along the axis of the propeller shaft in opposite direction, the other two parallel propeller blades on the other of the intercrossed axles are oriented in the direction perpendicular to the propeller shaft. It was discovered that four such generally flat propeller blades can be rotated around perpendicular intercrossed axles with the same speed without interfering with each other when each two adjacent blades mounted in perpendicular planes are rotated in different directions (clockwise and counterclockwise). During such a double rotation of four propeller blades with the same speed around the axis of the propeller shaft and simultaneously around the intercrossed axles, the radial extensions of the propeller blades relative to the propeller shaft are changed as a function of the angle of rotation, so that four propeller blades work in a paddling manner during all 360 degrees of rotation of the propeller shaft with both sides of the propeller blades being used consecutively as working surfaces. As a result, a uniform and effective propulsive force is exerted.
In a preferred embodiment of the invention four angle gears of mitre type are rotatably mounted on the intercrossed axles and are engaged with each other. Each of these gears is coupled with the propeller blade mounted on the same axle so that the propeller blades are constrained to rotate synchronously in different directions. The propeller blades are also constrained by planetary gear engagements to rotate around the intercrossed axes simultaneously with rotating around the axis of the propeller shaft. At least one sun angle gear in each of these planetary gear engagements is fixed coaxially to the propeller shaft and at least one planetary angle gear is mounted on at least one of the intercrossed axles.
The propulsion system can include two or more propeller shafts rotated synchronously in opposite directions for developing a uniform propulsive force in one direction.
REFERENCES:
patent: 1284282 (1918-11-01), Fitzpatrick
patent: 1450454 (1923-04-01), Roney
patent: 1667140 (1928-04-01), Clark
patent: 1923249 (1933-08-01), Abram
patent: 3270820 (1966-09-01), Frazier
patent: 3801047 (1974-04-01), Dell'Aquila
patent: 217223 (1924-09-01), None
LandOfFree
Propulsion system and method 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 system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propulsion system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2493280