A pool cleaning robot that may include a filtering unit for filtering fluid; a housing that at least partially surrounds the filtering unit; an impeller configured to induce fluid to pass through the filtering unit when rotated at a first direction; a pump motor for rotating the impeller; a drive system; first interfacing elements that are configured to interface with the pool during at least a part of a cleaning process of the pool; and at least one second interfacing element that extends outside a bottom of the housing without reaching a virtual plane defined by bottoms of at least two of the first interfacing elements.

A pool cleaning robot that may include a filtering unit for filtering fluid; a housing that at least partially surrounds the filtering unit; an impeller configured to induce fluid to pass through the filtering unit when rotated at a first direction; a pump motor for rotating the impeller; a drive system; first interfacing elements that are configured to interface with the pool during at least a part of a cleaning process of the pool; and at least one second interfacing element that extends outside a bottom of the housing without reaching a virtual plane defined by bottoms of at least two of the first interfacing elements.

A control unit manage loading and/or offloading of a vehicle. The control unit obtains information indicating one or more of: which vehicle that is to be loaded and/or offloaded, a target time for vehicle departure and a vehicle capacity. The control unit initiates loading and/or offloading of goods using assets. The control unit receives real-time information about an amount of goods that has been loaded and/or offloaded to and/or from the assets. The control unit determines, based on the real-time information, that the loading and/or offloading of the vehicle will be finished before, at or after the target time for vehicle departure. The control unit provides information indicating that the loading and/or offloading will be finished before or after the target time.

A control unit manage loading and/or offloading of a vehicle. The control unit obtains information indicating one or more of: which vehicle that is to be loaded and/or offloaded, a target time for vehicle departure and a vehicle capacity. The control unit initiates loading and/or offloading of goods using assets. The control unit receives real-time information about an amount of goods that has been loaded and/or offloaded to and/or from the assets. The control unit determines, based on the real-time information, that the loading and/or offloading of the vehicle will be finished before, at or after the target time for vehicle departure. The control unit provides information indicating that the loading and/or offloading will be finished before or after the target time.

A landing system for an unmanned aerial vehicle that includes a flat platform having a central hole that serves as a landing board, a lifting board on which a package can be placed that is positioned horizontally in the central hole, a lifting mechanism for lifting up and lower down the lifting board, a rotatable ring that surrounds the enteral hole and embedded in the flat platform in such a way that it can be leveled with the flat platform, and a motor for rotating the rotatable ring. The unmanned aerial vehicle can be positioned on the rotatable ring in such a way that the it can be horizontally rotated by the rotatable ring.

A package receiving and storage apparatus includes a takeoff and landing section; a package receiving section; a storage section; a retrieval section at which the first package stored in the storage section is retrievable; a transport device configured to transport the package between the package receiving section, the storage section, and the retrieval section; and a gas spray device installed at the package receiving section or in a package transport path extending from the package receiving section to the storage section, and configured to spray a gas onto the first package to remove foreign matter adhering to the first package.

A package receiving and storage apparatus includes a takeoff and landing section; a package receiving section; a storage section; a retrieval section at which the first package stored in the storage section is retrievable; a transport device configured to transport the package between the package receiving section, the storage section, and the retrieval section; and a gas spray device installed at the package receiving section or in a package transport path extending from the package receiving section to the storage section, and configured to spray a gas onto the first package to remove foreign matter adhering to the first package.

A carrier system and method for assisting in handling cargo of a vehicle. A carrier container includes an interior storage space surrounded by a front side facing the rear of the vehicle, rear, left, right, and bottom sides, and an open top that allows access to the interior storage space with a lid that closes and opens the top. A carrier support structure mounted to the carrier container is inserted into the hitch of the vehicle and holds the top surface of the container flush with the cargo bed of the vehicle. The lid is opened to deploy a ramp stored inside which is anchored to the container so that it is flush with the top surface of the container and reaches the ground. The lid is closed and a bridge plate commonly hinged with the lid is deployed over any gap between the cargo bed and the container top, providing a continuous surface between the cargo bed and the ground for use by pets for ingress and egress of the vehicle and for handling cargo.

A carrier system and method for assisting in handling cargo of a vehicle. A carrier container includes an interior storage space surrounded by a front side facing the rear of the vehicle, rear, left, right, and bottom sides, and an open top that allows access to the interior storage space with a lid that closes and opens the top. A carrier support structure mounted to the carrier container is inserted into the hitch of the vehicle and holds the top surface of the container flush with the cargo bed of the vehicle. The lid is opened to deploy a ramp stored inside which is anchored to the container so that it is flush with the top surface of the container and reaches the ground. The lid is closed and a bridge plate commonly hinged with the lid is deployed over any gap between the cargo bed and the container top, providing a continuous surface between the cargo bed and the ground for use by pets for ingress and egress of the vehicle and for handling cargo.

Validating security may include obtaining, by first computerized equipment in a first area, data indicative of a measurement of a characteristic of a physical item in the first area; obtaining, by second computerized equipment in a second area, data indicative of a measurement of the characteristic of a physical item in the second area, and data indicative of a unique identifier of the physical item in the second area; retrieving, by a processor, using the unique identifier, the measurement of the characteristic of the physical item in the first area; determining, by the processor, a difference between the measurement of the characteristic of the physical item in the first area and the measurement of the characteristic of the physical item in the second area; and providing, by the processor, if indicated by a comparison, an indication of invalid security for the physical item in the second area.