A method and device for cleaning and pretreating solar panels is provided. The device comprises a brush having cleaning elements made from silicone foam rubber material. The cleaning elements can be flaps of silicone foam rubber material. A sheet of silicone foam rubber material having two free ends can be attached to a core member such that the two free ends extend away from the core member to form flaps. The solar panels can be cleaned by brushing the solar panel surfaces with the flaps of silicone foam rubber material. The solar panels can also be pretreated by brushing the solar panel surfaces with silicone foam rubber material.

A method and device for cleaning and pretreating solar panels is provided. The device comprises a brush having cleaning elements made from silicone foam rubber material. The cleaning elements can be flaps of silicone foam rubber material. A sheet of silicone foam rubber material having two free ends can be attached to a core member such that the two free ends extend away from the core member to form flaps. The solar panels can be cleaned by brushing the solar panel surfaces with the flaps of silicone foam rubber material. The solar panels can also be pretreated by brushing the solar panel surfaces with silicone foam rubber material.

A method and device for cleaning and pretreating solar panels is provided. The device comprises a brush having cleaning elements made from silicone foam rubber material. The cleaning elements can be flaps of silicone foam rubber material. A sheet of silicone foam rubber material having two free ends can be attached to a core member such that the two free ends extend away from the core member to form flaps. The solar panels can be cleaned by brushing the solar panel surfaces with the flaps of silicone foam rubber material. The solar panels can also be pretreated by brushing the solar panel surfaces with silicone foam rubber material.

A method and device for cleaning and pretreating solar panels is provided. The device comprises a brush having cleaning elements made from silicone foam rubber material. The cleaning elements can be flaps of silicone foam rubber material. A sheet of silicone foam rubber material having two free ends can be attached to a core member such that the two free ends extend away from the core member to form flaps. The solar panels can be cleaned by brushing the solar panel surfaces with the flaps of silicone foam rubber material. The solar panels can also be pretreated by brushing the solar panel surfaces with silicone foam rubber material.

A sanitation monitoring and control system and associated method are used to route sanitation resources, such as sanitation robots configured to sweep, vacuum, or empty trash receptacles, in a facility. The system includes a network of sensors disposed throughout the facility and configured to sense patrons within the facility. A sanitation monitoring and control server stores records of patron positions at different times determined using the network of sensors, determines numbers of patrons in different areas of the facility at the different times according to the patrons' determined positions, determines activities patrons are engaged in in the different areas at the different times, and calculates sanitations scores for the areas according to a weighted sum of the numbers of patrons engaging in the determined activities. A route for the sanitation resource is calculated based on the sanitation scores and is transmitted to the sanitation resource to provide sanitation services.

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.

A support device and associated method of use may be used for supporting a surface to be cleaned, such as a tilt-in window, and associated cleaning supplies. The support device may include at least one protective support feature or surface, such as a top cushion. The support device may also include at least one support feature for supplies, such as an attachment ring and/or a bag or other supply receptacle. The support device may include a plurality of legs, such as two front legs and two back legs, and the legs may be foldable or compressible for moving or storage of the support device. Pairings of legs may further include locking features or other support arms or similar features. The support device may be configured to support one or more elements of a tilt-in window when those elements are in an open configuration, enabling easier cleaning of the window.

A support device and associated method of use may be used for supporting a surface to be cleaned, such as a tilt-in window, and associated cleaning supplies. The support device may include at least one protective support feature or surface, such as a top cushion. The support device may also include at least one support feature for supplies, such as an attachment ring and/or a bag or other supply receptacle. The support device may include a plurality of legs, such as two front legs and two back legs, and the legs may be foldable or compressible for moving or storage of the support device. Pairings of legs may further include locking features or other support arms or similar features. The support device may be configured to support one or more elements of a tilt-in window when those elements are in an open configuration, enabling easier cleaning of the window.

This application relates to flotation devices generally, and particularly to inflatable flotation devices configured for use by an infant to support the infant at least partially above the water and to at least partially retain the infant therein. In some embodiments, an apparatus is a flotation member having an inner perimeter, a top portion and a bottom portion. The flotation member has a first height between its bottom portion and its top portion at a first location of the flotation member. The flotation member has a second height between the top portion and the bottom portion at a second location of the flotation member, the second height different from the first height. The flotation member includes a support member at least partially disposed within the inner perimeter of the flotation member. The support member has a first portion coupled to the top portion of the flotation member at the first location. The support member has a second portion coupled to the top portion of the flotation member at the second location. The support member has a third portion between the first portion and the second portion, and the third portion is coupled to the bottom portion of the flotation member at a third location different from the first location of the flotation member and the second location of the flotation member.