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Compact Steering System - CSS

The CSS differs from other inventions and existing systems because it makes use of an actuator inside the inner wheel. The compact steering house is situated centrally in the wheel hub around which the wheel spins. An actuator, being electrically or hydraulically, within the steering house in the inner wheel ensures the rotation of the steering axle and the wheel hub to which it is connected. This steering system distinguishes itself from the all the other steering devices through it extremely compact build inside the wheel hub and the absence of a mechanical connection between the wheel(s) that need to be directed and the steer. The actuator inside the steering house can’t be seen from the outside and as a consequence offers the constructor a safe and reliable steering system with no need for external devices or actuators with extra connection rods exposed to dirt, mud, rain and external influences while riding. On top of that it offers the constructor a significant freedom in the design of the wheel suspension and the choice for double sided or single-sided suspension arm because all the available space between wheel and the frame can be used freely without having to take into account necessary space for external actuators, linkage rods, levers and pivots between the steer and the rotary hub in the inner wheel.

The CSS differs from other inventions and existing systems because it not only uses an invisible actuator inside the wheel but on top of that in case of hydraulically powered, it uses a light and compact hydraulic system without power steering. This is clearly new and inventive as known hydraulic steering systems all make use of power steering devices. In order to maintain the steering angle of the wheel hub and the steer perfectly synchronously the CSS is equipped with a monitor and compensation device.

As clearly demonstrated the CSS describes a steering system which is completely different from existing systems that uses complex mechanical steering systems through adjustable linkage rods, levers and pivots between the steer and the rotary hub in the inner wheel or external hydraulic actuators combined with power steering making use of electrical or mechanical hydraulic pumps and valves.

The Compact Steering System has been granted a Belgian patent refnr. 2012/0292 – 03.05.2012 – 1020158A5 and a European patent refnr. EP13447009.5 – 1755/2660125 - 25.04.2013.

The foregoing described implementation of the invention is not exhaustive: additions, deviations and adjustments can be implemented without deviating from the scope of this invention. The CSS with a monitor and compensation device uses the limited space inside the inner wheel for steering using the spindle and the steering house as an integral housing for the actuator. The traditional steering system through adjustable linkage rods, levers and pivots between the steer and the wheel is done without. The CSS is therefore not visible from the exterior which implies a significant improvement in terms of aesthetical point of view and design. The CSS might as such be used for all kind of steering applications where optimal use of space and weight is searched for.

There are several possible combinations of rotary actuator, piston actuator and/or steering dampers so as to accomplish the steering and the ECU can be equipped with additional steering valves steered by means of the input from the angular and other sensors. The CSS steering system can be used for steering non-driven wheels as well as for steering driven wheels. In that case, the use of a constant velocity shaft between gearbox and steered wheel will be necessary. The CSS can also be applied for vehicles or installations where no use can be made of mechanical steering mechanism, be it power assisted or not, and where as a result the designer/constructor needs to find a robust, compact, simple and reliable non-mechanic connection for the steering. The CCS can be applied to the steering of multiple wheels as well, be it driven or not. The ECU can be programmed in such a way that, taking into account different driving circumstances, the steered wheels will move synchronously or two by two synchronously or entirely independent.

Compact Homokinetic System - CHS

The Compact Homokinetic System for the steering of the driven wheel of motorbikes and two-wheelers, combines steering by means of a Compact Steering System with monitor and compensation system with a modified specific compact homokinetic actuator in the wheel hub.

Steering of the driven wheel is done in a simple, safe, independent, non-mechanical, precise and reliable way by means of an actuator in the wheel hub. As the driven wheel is used for steering, the output shaft can make a variable angle with the input drive shaft. The Compact Homokinetic System ensures that the angular velocities of the input shaft connected to the chain sprocket or cardan and the output shaft connected to the wheel are equal at all times.

The Compact Homokinetic System gives the constructor great freedom in the design and development of the vehicle, allows the combination of steering with driving front and/or rear wheel(s) and is the ideal basis for self-steering and self-driving motorbikes and two-wheelers.

The Compact Homokinetic System has been granted a Belgian patent refnr. 2020/0002 – 10.08.2021 – 1027982B1.

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