Land vehicles – Wheeled – Occupant propelled type
Patent
1997-08-28
1999-12-07
Mai, Lanna
Land vehicles
Wheeled
Occupant propelled type
280221, 280229, B62M 102
Patent
active
059970197
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a propelled device with several wheels and several pedal elements which are attached to the wheels in the manner of a pedal crank, by means of which the wheels can be driven.
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
Such propelled devices operating according to the pedal crank principle, in which the pedal elements are arranged eccentrically with respect to the respective wheel centre-point and at least partially offset with respect to each other in the direction of the wheel circumference, are known as a kit system under the trademark "pedalo". A single propelled device in which three wheels running next to each other can be driven by two pedal elements arranged in between in each case serves as the basic element. In the context of the known pedalo system, this basic module may then be extended, for example, by addition of a second, rear single propelled device which is connected to the first propelled device via two footboards which are mounted in each case on two pedal elements lying in a line parallel to the direction of travel. A track widening may be further brought about in this double propelled device produced in this way by means of an add-on module. This comprises two wheels connected eccentrically via a further pedal element, one or each of which may be mounted onto the wheel outer side of a single or double propelled device. By using the imagination further possible combinations and forms may be devised, although on the basis of the said three-wheel and two-wheel modules they may soon find their limits. Furthermore, the three-wheel modules are relatively expensive to make, and assembly by means of building on further three- or two-wheel modules requires a great deal of complicated accuracy when making the component parts.
This therefore produces the problem on which the invention is based, that of creating a propelled device which can be manufactured with reduced outlay and can be assembled more accurately. The combination flexibility should be increased at the same time.
SUMMARY OF THE INVENTION
As a solution, with a propelled device with the above-mentioned features it is proposed according to the invention that it is formed with two or more base modules each of two wheels which are connected in a rotation-resistant manner via one in each case of the appropriately at least two pedal elements, wherein the two or more base modules are coupled to each other directly or indirectly in such a way that their wheels run parallel and/or next to each other in the direction of travel. This achieves the advantage in terms of production technology that only one uniform basic and/or base module, which is obviously simplified with respect to the three-wheel module previously required with the pedalo system, has to be manufactured for the propelled device according to the generic type. In other words, a novel pedalo system which can be assembled solely from two-wheel modules can be created.
With particular advantage, one or more spacers are provided between two base modules connected together. By this means the track width and/or breadth of the propelled device can be accurately set and/or widened, particularly it several spacers are arranged one behind the other in a common line. The accuracy of the setting of the spacing between two base modules and/or of the track breadth of the propelled device then depends on the size and/or length of the spacers arranged one behind the other in series,
When the propelled device according to the generic type is used for the first time, the problem arises of lack of practice and/or inadequately trained movement and balance motoricity. For this purpose, in the known pedalo system two three-wheel modules are coupled one behind the other in the direction of travel via footboards. If the footboards are long enough and moreover also provided with vertical supports which project upwards and can be grasped manually, this produces a so-called rehabilitation propelled device, particularly suitable for training the disabled, convalescent
REFERENCES:
patent: 3318614 (1967-05-01), Lee
patent: 3506283 (1970-04-01), Tant
patent: 4786068 (1988-11-01), Tang
patent: 4786069 (1988-11-01), Tang
patent: 5011171 (1991-04-01), Cook
patent: 5129664 (1992-07-01), Chen
patent: 5421794 (1995-06-01), Du
Lerner Avraham H.
Mai Lanna
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