Marine propulsion – Operator powered drive for propelling means – Rotary cranking arm
Reexamination Certificate
2008-05-13
2008-05-13
Olson, Lars A. (Department: 3617)
Marine propulsion
Operator powered drive for propelling means
Rotary cranking arm
C440S021000, C440S026000, C440S031000
Reexamination Certificate
active
07371138
ABSTRACT:
The invention relates to a pedal boat drive comprising at least one pedal crank and a drive train for transferring drive energy produced by the pedal crank to a means of propulsion, e.g. a propeller. At least one flywheel, which is mounted on a free-running axle, is placed in the drive train between the pedal crank and the means of propulsion. Drive energy produced by the pedal crank is transferred from the pedal crank to the flywheel, which is mounted in a free-running manner, and is transferred from said flywheel to the means of propulsion. The aim of the invention is to further develop a pedal boat drive of this type that enables a pedal boat to be used as an item of sports equipment. In doing this, the pedal boat should behave in water similar to a bicycle on land with regard to the feeling of riding. To this end, a switching mechanism for reversing the running direction of the means of propulsion while the direction of rotation of the pedal crank remains unchanged is placed in the drive train, and the pedal boat drive has two flywheels, which are mounted parallel to one another on the free-running axle while leaving an intermediate space therebetween. A take-off element is placed inside said intermediate space. This take-off element is connected to the means of propulsion, serves to transfer the drive energy and can be coupled as desired to one of the inner faces of both flywheels in order to transmit drive energy. The invention also relates to a pedal boat comprising a pedal boat drive of the aforementioned type.
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Guerra David A.
Olson Lars A.
Venne Daniel V
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