A carriage has a carriage body having a loading platform for bearing a load and a plurality of wheels rotatably retained to the loading platform, an operation handle connected to the carriage body and grasped by a user operating the carriage, a sensor for measuring information related to a force applied to the operation handle, and a driving device for outputting a driving force based on a result of detection by the sensor to any of the plurality of wheels.

A carriage is used to convey a load. The carriage has a carriage body having a frame and a plurality of wheels rotatably retained to the frame, a loading platform supported to the carriage body and bearing the load, a sensor for detecting a relative movement between the carriage body and the loading platform, and a driving device for outputting a driving force based on a result of detection by the sensor to any of the plurality of wheels.

A transport trolley (CT) comprises: a pair of legs (J1) each having a lower end to which there is coupled a plate (PT1) on which at least one wheel (R1) is mounted so as to rotate in a transverse direction, first load supporting means (S1) coupled to the lower ends of the legs (J1), first coupling means (MC1) on which the lower ends of the legs (J1) are mounted so as to rotate in the transverse direction such that they can move from a folded-out position to a folded-away position, and on which the plates (PT1) are mounted so as to rotate such that wheels (R1) thereof can pivot and move from a folded-out position to a folded-away position approximately parallel to the folded-away legs (J1), and second coupling means (MC2) designed to force the legs (J1) and the wheels (R1) to be substantially simultaneously either in their folded-away position or in their folded-out position.

A lifting device includes a body or frame, a track, a lifting mechanism having a trolley moveable relative to the track for lifting an object, a main set of wheels coupled to a base portion of the body/frame, a maneuvering set of wheels coupled to the base portion between at least a portion of the main set of wheels and the trolley and vertically offset from the main set of wheels, and at least one arm extending outwardly from the base portion. The vertical offset between the main set and the maneuvering set of wheels forms a two stage lever which improves the mechanical advantage of the lifting device, thereby decreasing the amount of force needed to recline the object being lifted by the lifting device.

A portable powered roller assembly configured to impart a motive force to a wheeled vehicle or structure consists of a roller mounted in a rolling support structure. The roller is rotationally driven by a battery-powered drive unit coupled through a torque multiplying transmission, and is configured for engagement with the circumferential surface of a vehicle wheel. Rotational movement of the roller in engagement with the circumferential surface of the vehicle wheel draws the powered roller assembly towards, and under, the curved circumferential surface of the vehicle wheel, imparting a force to the vehicle wheel which include both a lifting force perpendicular to the supporting surface on which the powered roller is resting, and a motive force parallel to the surface.

A concrete/cement resurfacing machine integrates a dust collection subsystem and an overlay mixing/distribution subsystem, enabling a single operator to steer the machine to a desired floor location and deposit mixed, cementitious overlay material. The combination of dust collection and overlay mixing saves considerable time and achieves improved results, eliminating the need for separate vacuum machines while reducing the risk that dust will be released as bags of dry ingredients are added to the mixing tank. A single propane engine powers a hydraulic pump, with fluid being routed to three separate hydraulic motors with associated control valves to provide for forward/reverse locomotion, bidirectional paddle mixing, and vacuum generation. The dust collection system is preferably a two-stage system including a vacuum collection tank and a HEPA filter.

A hauling machine includes a handlebar with a neutral-biased control lever that controls forward, reverse and the speed of the machine. The handlebar includes detents which may be engaged to maintain a set elevation during use. A front caster wheel traverses and articulates relative to the rear drive wheels which include a hydrostatic drive coupled to the control lever such that when the lever is pushed or pulled in a particular direction the hydrostatic drive propels the in either a forward or reverse direction. The amount of displacement of the control lever determines the speed at which the machine travels. A variety of attachments including a hydraulic grapple, wire rope or cable, are provided above the drive wheels for accepting different materials such as limbs, brush, or any other material being hauled. A kill switch is provided for shutting down the machine if the user stumbles.