A mobile platform includes a base having a first surface and at least one drive wheel coupled to the base so as to movable with respect to the base first surface. A drive wheel retention mechanism is coupled to the at least one drive wheel and is structured to retain the at least one drive wheel in a first position in which the at least one drive wheel extends to a first distance from the first surface along a first side of the first surface. A plurality of roller elements is also coupled to the base and is structured to extend to a distance from the first surface along the first side of the first surface. The distance of the plurality of roller elements from the first surface is less than the first distance of the at least one drive wheel from the first surface.

A device for adjusting the level of a motor vehicle comprises an electric motor (4) and an actuating gear (3) which is connected upstream of a screw drive (2). The actuating gear (3) is formed by three series-connected gears (14, 15, 16) with parallel rotation axes (D14, D15, D16). An input gear (14), the number of teeth of which is at least one and at most five, is coupled to the motor shaft (17) of the electric motor (4) for conjoint rotation. The input gear engages with an intermediate gear (15) which engages with an output gear (16) which is connected to a nut (9) of the screw drive (2) for conjoint rotation.

A front suspension wheel for mobile robotic devices that can be compressed into or decompressed out of a main body of a mobile robotic device to facilitate driving the mobile robotic device over obstacles, thresholds and the like. The wheel will provide the mobile robotic device with information such as how fast the wheel is traveling. The wheel is easily removable by hand by the user.

A sulky apparatus for use behind self-propelled operator-controlled machines is provided. The apparatus includes a riding platform on which the operator stands, configured with a suspension system for absorption of shock and reduced impact on the body of the operator. The suspension system comprises one or more compression springs and is configured for dual adjustment, wherein the operator may adjust the spring tension directly by adjusting the compression of the spring coils or select pivot points on the sulky for control over the amount of load absorbed by the spring coils. The sulky apparatus may be connected to a self-propelled, operator-controlled machine by way of a boom system that attaches to the sulky apparatus at one end and the machine at the other. The sulky apparatus provides a significant benefit to the rider by way of suspension system capable of absorbing shocks to the rider, fitted within a limited space.

A suspension assembly for a vehicle having a frame includes a control arm, knuckle, spring, damper, and control module. The control arm is pivotably coupled to the frame. The knuckle is coupled to the control arm and supports a wheel hub for rotation relative to the knuckle. The spring is mounted between the frame and the control arm or the knuckle. The damper has an adjustable damping force and includes a first end mounted to the frame and a second end mounted such that a change in caster angle of the knuckle extends or contracts the damper. The control module is in communication with the damper and configured to adjust a damping force of the damper based on an actual or predicted change in caster angle of the knuckle. The control module is configured to increase the damping force in a direction that resists a change in the caster angle.

A camber control system of a vehicle includes a camber actuator configured to adjust a camber angle of a wheel of the vehicle. A camber control module is configured to: determine a target camber angle for the wheel based on one or more operating parameters; and actuate the camber actuator based on the target camber angle, thereby adjusting the camber angle of the wheel toward the target camber angle.

A suspension system for use between a frame and a beam axle includes a ride-height adjustment mechanism connectable between the frame and the beam axle. The adjustment mechanism includes an upper spring seat configured to mount to the frame and a lower spring seat configured to mount to the beam axle. A spring is interposed between the upper and lower spring seats. An electromechanical actuator arrangement is configured to move the upper spring seat relative to the frame or the lower spring seat relative to the beam axle so that a distance between the frame and the beam axle can be increased or decreased.

A shock absorber includes a hollow rod, a suspension spring arranged outside the hollow rod, a spring receiver arranged to be displaceable with respect to the hollow rod and receiving a load of the suspension spring, an adjusting screw inserted into one end side of the hollow rod and configured to adjust a position of the suspension spring by restricting movement of the spring receiver to the one end side, and a shaft member which transmits a load received by the spring receiver to the adjusting screw inside the hollow rod. An insertion portion which extends in an axial direction of the hollow rod and into which the shaft member is inserted is provided on a side surface of the hollow rod.

The present invention relates to an active suspension system allowing the force acting axis of a spring to be controlled, wherein a control means for the force acting axis of a spring is installed either between an upper seat plate and an upper arm, or between a lower seat plate and a lower arm so as to allow the wheel rate and vehicle height to be controlled by varying the force acting axis of the coil spring, and a manipulation unit capable of controlling the operation of the control means for the force acting axis of a spring is installed inside the vehicle. By varying the force acting axis of the coil spring, the present invention can significantly improve the marketability of the suspension system and reliability of the vehicle by varying the ride quality.

A suspension system includes a top mount, a bottom mount, a rigid housing, an air spring, and a linear actuator. The air spring transfers force of a first load path between the top mount and the bottom mount. The air spring includes a pressurized cavity containing pressurized gas that transfers the force of the first load path. The linear actuator transfers force of a second load path between the top mount and the bottom mount in parallel to the first load path. The rigid housing defines at least part of the pressurized cavity and transfers the force of the second load path.