Abstract: Apparatus for installing a solar panel array in parallel rows on panel support structure, as for solar farms, including a lift-and-place vehicle with characterizing features for moving between and along rows of support structure. Such vehicle includes a driven ground-engaging base, a lifting mast extending upwardly and in a fore/aft direction to define a panel-loading space therebeneath, a liftable trolley beam secured to the mast over the panel-loading space and extending laterally between adjacent rows, a traversing trolley movable along the beam, and a panel-placing carrier suspended from the trolley for up/down and lateral movement of carried panels. A panel-pallet vehicle is hitched to the lift-and-place vehicle, extends under the panel-loading space, and has a pallet carrier adjacent to the panel-loading space.

Abstract: Apparatus for installing a solar panel array in parallel rows on panel support structure, as for solar farms, including a lift-and-place vehicle with characterizing features for moving between and along rows of support structure. Such vehicle includes a driven ground-engaging base, a lifting mast extending upwardly and in a fore/aft direction to define a panel-loading space therebeneath, a liftable trolley beam secured to the mast over the panel-loading space and extending laterally between adjacent rows, a traversing trolley movable along the beam, and a panel-placing carrier suspended from the trolley for up/down and lateral movement of carried panels. A panel-pallet vehicle is hitched to the lift-and-place vehicle, extends under the panel-loading space, and has a pallet carrier adjacent to the panel-loading space.

Abstract: A technology is provided for conflict resolution in a data proxy for a mutation. A mutation may be received at a data proxy from an application, and the data proxy is in a service provider environment. The mutation may be sent to be processed by a data store via a data access resolver. A conflict message may be received at the data proxy via the data access resolver for a conflict mutation at the data store for the mutation. The conflict may be resolved at the data proxy using a conflict resolution function in the data proxy.

Abstract: A technology is provided for synchronizing data with delayed subscriptions. A request may be received at a data proxy for a data snapshot for an application that has been offline at the client. A subscription may be held for a pre-determined amount of time after the request for the snapshot. The data snapshot may be sent to the client. The data for the subscription may be sent after the pre-determined amount of time.

Abstract: A technology is provided for mutations with immediate feedback. A mutation may be received at a data proxy from an application. The mutation may be sent to a data source via a data access resolver associated with the data proxy. Results of the mutation may be received from the data source. A subscription may be triggered based on receiving the results of the mutation. A message may be sent via a topic provided by the subscription by using a messaging service such that the messaging service publishes the message with the mutation to devices subscribed to the topic.

Abstract: A crane having progressive function control preferably includes the crane, an electronic control device, a load sensor, a boom angle sensor, a boom length sensor, and a steering angle sensor. The load sensor measures a load on the crane boom. The boom angle sensor measures an angle of the crane boom. The boom length sensor measures a length of the crane boom. The steering angle sensor measures an angle of the rear wheel. The load sensor, boom angle sensor, boom length sensor and steering angle sensor are read by the electronic control device. The electronic control device receives inputs from a drive joy stick, a boom angle joy stick and a boom extension joy stick. The electronic control device includes a drive reduction algorithm and a boom reduction algorithm. The algorithms are used to retard inputs from the drive joy stick, boom angle joy stick and boom extension joy stick.

Abstract: A crane having a toolless removable battery includes a crane and a removable battery. The crane preferable includes a lengthwise structural member, a pair of front wheels, a turnable rear wheel, a boom mount and a crane boom. A battery slot is created between the turnable rear wheel and the pair of front wheels and adjacent the turnable rear wheel. The removable battery includes at least three wheels. Four retention hooks are retained on opposing sides of the removable battery. Four retention posts extend from opposing sides of the battery slot for engagement with the four retention hooks. One end of a pair of lift straps extend from opposing ends of the removable battery and the other end of the pair of lift straps are secured to opposing sides of the crane boom. The crane boom is raised to lift the four retention hooks off the four retention posts.

Abstract: An improved aerial work apparatus of the type having an aerial work platform attached to the distal end of a boom mounted to a mobile chassis comprising a material-handling device mounted with respect to the platform. Preferably, the material-handling device is either a dual winch device, a fork lift device, or material support feet. An aerial work platform comprising a rail support frame attached to the boom and a work basket is provided wherein the work basket can be interchanged between a basket in front of the boom and a basket positioned alongside the boom.

Abstract: A pallet system for supporting and transporting cargo on a cargo carrier. The cargo carrier has a plurality of rollers and a pair of retaining rails. The pallet system comprises a pallet member having a top late and a bottom plate, with each plate maintained in a spaced apart relationship to define an interior space. A pair of pallet extension members reciprocally mounted in the interior space. One extension member is mounted a spaced distance from the other extension member, with each pallet extension member having an outer edge configured to engage the retaining rails. An extension mechanism is mounted in the interior space and coupled to the pallet member and the pallet extensions. The extension mechanism moves each pallet extension member from a first position to a second position.

Abstract: An aerial work apparatus having a boom mounted to a base, a platform attached to the distal end of the boom, a boom mechanism for positioning the platform, a boom control module mounted with respect to the platform, a vertical load-sensing mechanism mounted at the platform for measuring the platform load and generating a load signal based on that measurement and a controller operationally attached to the boom mechanism and boom control module. The controller receives the load signal and at least one position signal relating to the position of the platform and generates at least one control signal based thereon. The boom mechanism is controlled by the boom control module through the controller. Preferably, the load-sensing mechanism is held in position by a vertical holding column attached at the distal end of the boom so that the mechanism fully supports a platform support member attached to the platform.

Abstract: An improved aerial work apparatus of the type having an aerial work platform attached to the distal end of a boom mounted to a mobile chassis comprising a material-handling device mounted with respect to the platform. Preferably, the material-handling device is either a dual winch device, a fork lift device, or material support feet. An aerial work platform comprising a rail support frame attached to the boom and a work basket is provided wherein the work basket can be interchanged between a basket in front of the boom and a basket positioned alongside the boom.

Abstract: An aerial work apparatus having a boom mounted to a base, a platform attached to the distal end of the boom, a boom mechanism for positioning the platform, a boom control module mounted with respect to the platform, a vertical load-sensing mechanism mounted at the platform for measuring the platform load and generating a load signal based on that measurement, and a controller operationally attached to the boom mechanism and boom control module. The controller receives the load signal and at least one position signal relating to the position of the platform and generates at least one control signal based thereon. The boom mechanism is controlled by the boom control module through the controller. Preferably, the load-sensing mechanism is held in position by a vertical support column attached at the distal end of the boom so that the mechanism fully supports a platform support member attached to the platform.