An obstacle crossing mechanism, adapted and arranged on a cleaning rack of a photovoltaic panel cleaning equipment configured to clean photovoltaic panel arrays is disclosed. The cleaning rack includes connecting rods detachably-connected, and fixed rods arranged on respective connecting rods. The obstacle crossing mechanism includes a moving rack and a fixed rack, in which moving rack is used for temporarily stopping photovoltaic panel cleaning equipment; and the fixed rack is located below the moving rack and the moving rack ascends or descends on the fixed rack. A telescopic mechanism is further provided with the obstacle crossing mechanism so that the two mechanisms together facilitates the photovoltaic panel cleaning equipment to travel from a photovoltaic panel array to reach another photovoltaic panel array during cleaning process of photovoltaic panels without requiring any human assistance, thus achieve total automation.

A correction mechanism, mounted on a cleaning rack of a photovoltaic panel cleaning equipment, for cleaning photovoltaic panels is disclosed. Cleaning rack includes four connecting rods which are detachably connected; the correction mechanism includes a first correction guide wheel and a second correction guide wheel, the first correction guide wheel and second correction guide wheel are both detachably mounted on the third connecting rod, and when the cleaning rack stably moves on photovoltaic panel, the first correction guide wheel and the second correction guide wheel are not in contact with side surfaces of lower edges of the photovoltaic panel. By adopting the correction mechanism and the photovoltaic panel cleaning equipment having the correction mechanism provided by the present invention, the body of the photovoltaic panel cleaning equipment can be enabled to stably move on the photovoltaic panels when the photovoltaic panels are inclined, thus preventing shaking from occurring.

The present invention relates to a device that is in particular detachable, connectable, or connected with a cleaning device, wherein the device comprises at least one sensor means in order to record the position of at least one cleaning area of a cleaning device, which area can be or is used for cleaning, at least one display device, and at least one data processing unit which interacts or can be made to interact functionally with the display device, and with the at least one sensor means, wherein the data processing device is configured and adapted to display at least one representation of at least one surface to be cleaned in at least one first color or without color and, based on a recorded change in the position of at least the cleaning area of the cleaning device, to display the surface to be cleaned in at least one second color or without superimposition of color.

The present invention relates to a device that is in particular detachable, connectable, or connected with a cleaning device, wherein the device comprises at least one sensor means in order to record the position of at least one cleaning area of a cleaning device, which area can be or is used for cleaning, at least one display device, and at least one data processing unit which interacts or can be made to interact functionally with the display device, and with the at least one sensor means, wherein the data processing device is configured and adapted to display at least one representation of at least one surface to be cleaned in at least one first color or without color and, based on a recorded change in the position of at least the cleaning area of the cleaning device, to display the surface to be cleaned in at least one second color or without superimposition of color.

An extendable window prop for supporting double-hung windows includes a pole that is of adjustable length. A crossbar is coupled to and extends perpendicularly from an upper end of the pole. A first rod is coupled proximate to the upper end of the pole and extends substantially perpendicularly from the pole. The first rod is substantially perpendicular to the crossbar. A second rod is coupled to and extends substantially perpendicularly from the first rod distal from the pole. The second rod is transverse to the pole. The crossbar is positioned on the pole such that the crossbar is configured to position a first window. The first window is supported by the pole. The second rod is positioned on the first rod such that the second rod is positioned to abut a frame of the first window that is positioned on the crossbar.

A modular caddy for carrying window cleaning accessories includes a main bag and at least one modular unit attachable to the main bag. The main bag has a back panel and a cover sheet, with securing means arranged on the back panel for releasably securing the main bag to a garment. Strips of webbing are arranged on the outer surface and fixed at regular intervals to form a series of gaps. Attachment means are dimensioned to correspond to said gaps and configured for releasably attaching modular units to the strips of webbing.

The modular units also have strips of webbing for attaching to the main bag and for mounting further modular units thereon.

A modular caddy for carrying window cleaning accessories includes a main bag and at least one modular unit attachable to the main bag. The main bag has a back panel and a cover sheet, with securing means arranged on the back panel for releasably securing the main bag to a garment. Strips of webbing are arranged on the outer surface and fixed at regular intervals to form a series of gaps. Attachment means are dimensioned to correspond to said gaps and configured for releasably attaching modular units to the strips of webbing.

The modular units also have strips of webbing for attaching to the main bag and for mounting further modular units thereon.

This application relates to inflatable flotation devices that support an infant, and having first, second and third inflatable members. The first member has an outer and an inner perimeter and a first and second diameters at first and second end portions. The second member is at least partially within the inner perimeter of the first member. At least a portion of the upper surface of the second member is recessed with respect to an upper surface of the first member. The third member has an inner perimeter disposed about at least a portion of the outer perimeter of the first member. The third member has a maximum height, when inflated, that is less than the maximum height of the first member, at least a portion of the inner perimeter of the third member being spaced apart from the outer perimeter of the first member.

This application relates to inflatable flotation devices that support an infant, and having first, second and third inflatable members. The first member has an outer and an inner perimeter and a first and second diameters at first and second end portions. The second member is at least partially within the inner perimeter of the first member. At least a portion of the upper surface of the second member is recessed with respect to an upper surface of the first member. The third member has an inner perimeter disposed about at least a portion of the outer perimeter of the first member. The third member has a maximum height, when inflated, that is less than the maximum height of the first member, at least a portion of the inner perimeter of the third member being spaced apart from the outer perimeter of the first member.