Technical Field:

The subject invention relates to the field of human-powered mechanisms intended to move bicycles and watercraft(boats).

Disclosure of Invention:

This mechanical system allows the use of long levers with pedals and their synchronized operation by pushing and pulling up and down

Background Art:

Unlike current technical solutions that use short levers with a cyclical movement of the mechanism, this system is driven by long levers that achieve greater torque and output power needed to move a bicycle or boat.

Best Modes for Carrying Out of the Invention:

With this drive system, it is possible to use the vast majority of currently available bicycle and watercraft drive train components with far more efficient performance.

Brief description of the Drawings:

Figure 1: The intersection A-A

Figure 2: Top view of the mechanism

Figure 3: Side view of the mechanism

Figure 4: One-way bearing (sprag or roller clutch)

Figure 5: Pedal with foot coupling

Figure 6: Back mechanical position on the bicycle

Figure 7: Front mechanical position on the bicycle Signs from the draft:

1. Long levers

2. Axle

3. Hub shell of the mechanism

4. Bevel gears

5. One-way bearings

6. Gear (sprocket)

7. Chain

8. Conical nut

9. Bearings

10. Mechanism support (frame)

11. Pedals with foot coupling

Description of the invention:

Mechanical drive system whit long levers (1) powered by human force is a system intended primarily for bicycles and similar human-powered vehicles or vessels where this type of drive mechanism is required. it consists of a axle (2) on which the hub shell (3) of the mechanism rotates in one direction. Bevel gears (4) are placed on the hub shell (3) of the mechanism, which are interconnected with 3 gears and directly interact in both directions of movement and allow constant synchronized movement of the hub shell (3). The bevel gears (4) drive the hub shell (3) of the mechanism by one-way bearings (5), alternately first one side and then the other. Two long levers (1) with pedals are fixed on two peripheral gears and the mechanism is moved by pushing or pulling the pedals. A gear (6) (sprocket, belt or shaft gear) is also fixed on the hub shell (3) of the mechanism and it constantly rotates like the hub shell(3) in one direction. The fixed gear (6) on the hub shell (3) is connected by a chain (7), belt or shaft to the drive wheel and allows movement.

Levers (1) can be monolithic (in one piece) or telescopic. And the pedals should have foot coupling device so that the movement of the mechanism is in both directions at the same time whit optimal efficiency.

The advantage of this mechanism compared to the previously known mechanism is the length of the levers (1) (pedals), which generate much more torque than short levers, and therefore gives much more power that moves the wheels or other things. The direct connection of the bevel gears (4) and their constant and simultaneous action on the hub shell (3) are crucial for the efficiency of the mechanism.

The drawings illustrate how the mechanism works and how it can be positioned on the bike (some of the many possibilities). Industrial applicability:

There are many ways to apply this mechanism to human-powered vehicles or vessels. Figures 6 and 7 show two possibilities.