Abstract: A tractor has hydraulically driven wheels at a cab end and castor wheels at an engine end. Each driven wheels is driven by a hydraulic motor with a continuous adjustment of the motor displacement, with the motor being driven by a pump also having continuous displacement. The motor displacement is controlled by an electronic controller in response to stroking of the speed control lever to manage the displacement to provide required drive torques at different points in the stroke. There is provided an automatic steering system having a guidance controller arranged to receive GPS position information which controls the steering by differentially adjusting the displacement of the motors so that the automatic steering is independent of the manual steering which controls the pumps.

Abstract: The motorized wheel accessory for a stroller is an after-market device that is configured to interface with a stroller in order to mobilize the stroller without the need for an end user to actually push said stroller. The motorized wheel accessory includes a frame that is configured to attach onto a rear axle of a stroller. The frame includes a power member that is wired to a motor. The motor is in mechanical connection with a pair of wheels. The pair of wheels propel the stroller. The frame may be adjustable to accommodate differently-sized strollers.

Abstract: A trailer hitch cover assembly is provided. That trailer hitch cover assembly includes a roller and a flexible cover that is received on the roller. The flexible cover is displaceable between a retracted position wherein the flexible cover is wound onto the roller so as to provide access to a hitch receiver and a deployed position wherein the flexible cover extends from the roller so as to conceal the hitch receiver.

Abstract: A constructive arrangement in mechanical coupling device applied in vehicles for tow traction is described comprising a square tubular structure (10) arranged horizontally provided in its ends by through-holes (11) receiving the fastening fitting structures (20) next to the vehicle chassis, said square tubular structure (10) showing in the central portion a set of fastening through-holes (12) of a “T”-shaped structure (30) enabling to fit an end cap (40) in a sinuous shape, describing technical improvements by reducing the number of parts, simplifying the constructive process and fast coupling system between the bracket and the end cap, facilitating the use, manufacture, installation, and maintenance of the equipment.