Reduction of minimum turning radius of an aerial work platform. Drive motors are provided to driven wheels of the platform respectively, so that the driven wheels can be independently controlled in terms of rotational speed and rotation direction. When the steering angle of steered wheels is at most a first steering angle, constant velocity control is performed, driving both of the driven wheels in the same rotation direction and at the same rotational speed. When the steering angle exceeds the first steering angle and is at most a second steering angle, differential control is performed, reducing the rotational speed of the driven wheel on the inside in the turning direction relative to the driven wheel on the outside in the turning direction. When the steering angle exceeds the second steering angle, counter-rotation control is performed, counter-rotating the driven wheel that is on the inside in the turning direction.

A motorized cart assembly for use in gardening and other outdoor chores includes a first motor that is operationally coupled to a rear axle of a rolling chassis. The first motor is configured to selectively rotate the rear axle to locomote the rolling chassis. A lift module that is coupled to the rolling chassis is configured to selectively raise and lower an item that is positioned upon an upper plate of the lift module. A handle, which is coupled to at least one of the rolling chassis and the upper plate, is configured to be grasped in at least one hand of a user to steer the rolling chassis.

An all-terrain outdoor elevating nacelle comprising a mechanism for lifting a working platform, this mechanism being mounted on a chassis provided with a front bridge and a rear bridge that are provided with wheels. The motive power for moving the elevating nacelle on the ground is provided by a first electric motor and that for actuating the lifting mechanism is provided by a second electric motor via a hydraulic pump which it drives. The motors are supplied by a battery that can be recharged by one or more single-phase chargers on board the elevating nacelle from a single-phase or three-phase electrical network, a slot being further provided for mounting a power supply unit intended to be connected to the charger(s) to recharge the battery. The elevating nacelle is more environmentally friendly and quieter.

The aerial lift comprises a lifting mechanism for raising the working platform 3, which lifting mechanism is provided with a guardrail 40. A protection device 70 prevents an operator from being crushed against the guardrail 40 or against the control console 50. The protection device 70 comprises a bar 90. The control console 50 can be removably mounted on the protection device 70 near the bar 90. The protection device 70 comprises a sensor for detecting when the bar 90 is pressed by the operator, which causes the platform to stop moving.

The present invention provides an automated system for spraying a wall of a building. The automated system comprises a scissor lift having a linear track disposed thereon, wherein the linear track is disposed horizontally with respect to the height of the building; a robotic mechanism slidably mounted on a linear track of the scissor lift, the robotic mechanism further having an end effector adapted for supporting a spray nozzle thereon; a visual monitoring system configured to scan structural characteristics and profiles of the wall; computing device disposed in communication with the visual monitoring system and the robotic mechanism, wherein the computing device is configured to receive the scanned structural characteristics and profile of the wall from the visual monitoring system; and a controller communicably coupled to the computing device, the controller configured to independently control operation of respective ones of the robotic mechanism, and the spray nozzle according to the scanned structural characteristics and profiles of the wall.

A lightweight portable scissor lift capable of transport in a typical light duty pick-up truck is described. The lift includes a base having an attachment mechanism to secure it to pole or other fixed structure thereby stabilizing the base and permitting a bucket to be extended upwardly without risk of the lift tipping.

A scissors lift vehicle includes a chassis, a first pair of wheels disposed at one end of the chassis and a second pair of steering wheels disposed at an opposite end of the chassis. The wheels include a circular profile having a radius R. The scissors lift vehicle includes a track having an upper surface and a lower surface extending aft at a height less than R above the travel surface. A pivot connection is coupled to the aft plate at a height less than R above the travel surface. A scissors stack assembly includes a plurality of paired scissors linkages. Each scissors linkage of a first pair of scissors linkages is coupled to a respective pivot connection. Each scissors linkage of a second pair of scissors linkages includes a truck coupled to a distal end. The truck is configured to engage the upper surface of the track.

A lift device comprises a base, a retractable lift mechanism, a work platform, a linear actuator, and a lift controller. The base has a plurality of wheels. The retractable lift mechanism has a first end coupled to the base and is moveable between an extended position and a retracted position. The work platform is configured to support a load. The work platform is coupled to and supported by a second end of the retractable lift mechanism. The linear actuator is configured to selectively move the retractable lift mechanism between the extended position and the retracted position. The lift controller is configured to monitor at least one lift characteristic associated with the linear actuator and to determine whether an actuator failure has been detected based on the at least one lift characteristic associated with the linear actuator.

A method and apparatus for a human picker on a picker automated vehicle (PAV) along with its vertical tote conveyors (VTCs) having totes to a successive plurality of inventory stock bins arranged in rows and columns along aisles to move the human picker both horizontally and vertically to successively retrieve each of a plurality of stock items from the bins and place the respective pp items in a preselected ones of totes. Items are later optionally transferred to shipping containers based on each customer order. In some embodiments, horizontal aisle conveyors (HACs) move totes from a configurator along the aisles to the moving PAVs, then back after tote loading by the picker. Totes are transferred from the HACs to upward VTCs, then crossover to downward VTCs, are loaded with stock items by the picker on upward or downward paths, and then transferred back to the HACs to move to shipping station.

A method and apparatus of moving a picker on an automatically guided vehicle (AGV) along with a plurality of totes to a successive plurality of inventory stock bins to allow the picker to successively retrieve each of a plurality of stock items from the stock bins and place the respective items in a preselected one of the plurality of totes based on a customer order. In some embodiments, the picker is a human picker. In some embodiments, the totes are shipping containers.