FR2723066A1 - Direct propulsion paddle wheel for boat - Google Patents

Abstract

The boat direct propulsion system comprises two wheels (A,C) with paddles (I) on their external faces and push rods (b,d) on their internal faces. One wheel (C) hides the other opposite wheel. The wheels each have three round push rods (b, b1, b2, d, d1, d2) located at an angle of 120 deg and out of phase by an angle ( beta ) of 60?0 on one wheel relative to the other. There are two floats and the wheels have a diameter such that they pass beyond the float hulls so as to be able to run on the ground. A seat (8), supported by the floats, is placed in front of the push rod passage. The push rods are fixed by external washers (3) and their displacement allows an alternate impulse (4), and rotation (5) of the assembly by right and left foot pressure by the user on the seat (8).

Description

DIRECT PULSION ROTATION DEVICE APPLIED TO PALLET WHEELS OF NAUTICAL VEHICLES
The present invention relates to a direct drive device applied to the paddle wheels of watercraft.

 I1 is intended in particular for beach boats, whose movement is effected by muscular force.

 It is known to use paddle wheels on beach machines, but their crank drive system has little efficiency compared to the dimensions, the work of these wheels, and the force losses due to their small diameter which does not allow them, moreover, to roll on the ground at the time of putting dry, or in the water.

 The device according to the present invention eliminates these drawbacks.

Indeed, it makes it possible to obtain an optimum efficiency and a significant contribution of speed due to the large diameter of the paddle wheels, and to the direct application of the point of force of rotation on the wheels. These allow an easy shore draw, by their lower protrusion from the line of the floats. Cerdépassement serves as a fulcrum on which the machine rests dry and rolls.

 It consists of the combination of two parallel paddle wheels, of large diameter, placed between two floats, and in two vertical planes. The pallets are fixed on the outside faces; each of these faces supports pushers of round section, on the inner side on which is applied the force which makes the wheels turn, by means of the feet and legs of the user. The offset of the pushers of a pBR wheel compared to the other is such that each in turn presents itself in the same rotational movement to undergo the push, and perform alternating work in the upper part of s; wheels, or low, opposite side. Pushing one causes the opposite to be pushed.

On the annealed drawings, given by way of nonlimiting example of one of the possible embodiments of the object of the invention:
Figure I shows the wheel (A) seen from the inside, with its three pushers.

Figure 2 shows the wheel (C) seen from the outside on the machine, with its opposite, the hole (A) hidden.

Figure 3 shows under the same conditions the wheels seen from above, attached by their axis to the two floats of the nautical craft.

 The device, Figures I to 3 consists of two wheels (A) and (C) with their pallets (I) attached to the outside, up to the large diameter.

On the inner sides, at a smaller diameter and suitable for efforts, are placed the pushers of large round section; there are six, three on each side (b), (bI), (b2), for the wheel (A); (d), (d), (dI), (d2), for the wheel (C). These pushers form on their wheel three angles at the center of I20 like (b, bI) = (α), wheel (A). They are offset on either side by an angle (g) of 600, like (b), wheel (A), and (d), wheel (C). The wheels are fixed in this order on the axis (2). The lifters are fixed using bolts and nuts (not shown), and washers (3), on the outside. They offer an alternative point of application of the force due to the offset, and for each foot, at each passage in (4) dd at the same rotation (5) of the assembly fixed on the axis (2), adjoining bearings (6), themselves fixed to two floats (7), which support the user's seat (8), placed in front of the passage (4) of the pushers which receive on either side the alternating pulse right and left foot of the user, thereby causing the direction of advancement fg). Ground pulling is facilitated by the internal overhang (IO) of the wheels.

 By way of nonlimiting example, the wheels can have a twisting diameter of t meters; and 65 centimeters inside width, between it.

 The wheels (A) and (C), the pushers (b) and (d), as well as the floats (7) can be made of any material. They can in particular be manufactured from molded plastic elements, associated or not with metal pins. This makes it possible to design, for example, beach boats with an attractive and original appearance.

 The principle of paddle wheels driven directly by foot movement can be adapted to types of land wheels without paddles.

 The positioning of the various constituent elements gives the object of the invention a maximum of useful effects which had not, to date, been obtained by similar devices.

Claims (5)

 REVEYDICATIOKS  I) Direct-propelled nautical craft comprising paddle wheels, characterized in that the wheels (B, C) have paddles (I) on the outer faces, and pushers (b, d) on the inner faces.  2) Nautical craft according to claim I characterized in that the wheels (b, C) each comprise 3 pushers (b, bI, b2, d, dI, d2) arranged at an angle () of I20, and phase shifted by angle () of 600 of one wheel relative to the other. e  3) Nautical craft according to claim I or 2 characterized in that the pushers (b, d) are of round section.  4) Nautical craft according to one of claims I to 3 characterized in that it comprises two floats (7), and in that the wheels (Â, C) have a diameter such that they protrude from the hull of the floats (7) so that it can roll on the ground.  5) Nautical craft according to claim 4 characterized in that it comprises a seat (8) supported by the floats (7), and placed in front of the passage of the pushers (4).