A window washing assembly includes a first roller bar and a second roller bar affixed within a window frame. The assembly includes a first pulley coupled to the first roller bar and the second roller bar. The assembly includes a second pulley parallel to the first pulley and coupled to the first roller bar and the second roller bar. The assembly includes a wiper arm coupled to the first pulley and the second pulley, wherein the wiper arm includes at least one spray nozzle, a wiper blade, and at least one magnet. The assembly includes a motor coupled to the first or second roller bar. The assembly includes a first magnetic stop and a second magnetic stop. The assembly includes a cleaning fluid reservoir fluidly coupled to the one or more spray nozzles of the wiper arm.

A vertical surface cleaning device comprising a main body, a cleaning arm, a cleaning head, and leg mechanisms with grippers. The cleaning head applies a cleaning fluid on a surface to carry out a cleaning operation. A waste collector is provided to collect a waste material arising from the cleaning operation. The grippers may remain in a grip or in a release state. The segments of the leg mechanisms are articulatable to configure a first group of the leg mechanisms to stably hold the main body at a first place with the grippers remaining in the grip state. A second group of the leg mechanisms move in a desired direction with their grippers in release state while the first group stably holds the main body. The first group of the leg mechanisms then moves in the same direction while the second group holds the main body at a second place.

A vertical surface cleaning device comprising a main body, a cleaning arm, a cleaning head, and leg mechanisms with grippers. The cleaning head applies a cleaning fluid on a surface to carry out a cleaning operation. A waste collector is provided to collect a waste material arising from the cleaning operation. The grippers may remain in a grip or in a release state. The segments of the leg mechanisms are articulatable to configure a first group of the leg mechanisms to stably hold the main body at a first place with the grippers remaining in the grip state. A second group of the leg mechanisms move in a desired direction with their grippers in release state while the first group stably holds the main body. The first group of the leg mechanisms then moves in the same direction while the second group holds the main body at a second place.

Disclosed is a surface cleaning robot and a process for manufacturing a track thereof. The surface cleaning robot includes a body, where a walking unit is provided at the bottom of the body, the walking unit includes a track and a gear driving the track, the track includes a hard layer in the inner ring engaging with the gear and a soft layer in the outer ring contacting a cleaning surface, and the hard layer and the soft layer are nested and combined as a whole. The present disclosure adopts a composite track that closely nests and combines inner and outer rings of different materials.

Disclosed is a surface cleaning robot and a process for manufacturing a track thereof. The surface cleaning robot includes a body, where a walking unit is provided at the bottom of the body, the walking unit includes a track and a gear driving the track, the track includes a hard layer in the inner ring engaging with the gear and a soft layer in the outer ring contacting a cleaning surface, and the hard layer and the soft layer are nested and combined as a whole. The present disclosure adopts a composite track that closely nests and combines inner and outer rings of different materials.

An automated building washing device generally includes one or more rotational brushes having a vertical rotational axis coupled to a window washing swing stage. The brushes are horizontally movable from end-to-end along the longitudinal direction of a window washing swing stage while rotating about their vertical axis so that a relatively large portion of building surface can be quickly cleaned.

An automated building washing device generally includes one or more rotational brushes having a vertical rotational axis coupled to a window washing swing stage. The brushes are horizontally movable from end-to-end along the longitudinal direction of a window washing swing stage while rotating about their vertical axis so that a relatively large portion of building surface can be quickly cleaned.

An aircraft that can fly stably when water is discharged from a hose installed on the airframe, and an aircraft system, are provided. The aircraft system can include a master aircraft, slave aircrafts and a remote control device. The aircraft preferably fly as a unit. Each slave aircraft can include four rotary blade portions having propellers, and a suspending means for suspending a part of a hose. The master aircraft may include four first rotary blade portions having first propellers arranged to rotate in a horizontal plane, four second rotary blade portions having second propellers arranged to rotate in a vertical plane, and a nozzle on which a tip end part of the hose is installed. The direction of the center axis of the nozzle is parallel to the direction of the rotational axes of the second propellers.

A drone cleaning device for a building exterior comprises a main frame, a plurality of branch shafts set to the main frame, a plurality of power elements respectively set to the branch shafts, a plurality of adjustable supports set to the main frame, a plurality of rotatable elements respectively set to the adjustable supports and are configured to rotate relative to the adjustable supports, and a plurality of cleaning elements respectively set to the rotatable elements.

A drone cleaning device for a building exterior comprises a main frame, a plurality of branch shafts set to the main frame, a plurality of power elements respectively set to the branch shafts, a plurality of adjustable supports set to the main frame, a plurality of rotatable elements respectively set to the adjustable supports and are configured to rotate relative to the adjustable supports, and a plurality of cleaning elements respectively set to the rotatable elements.