Abstract: A robotic warehouse includes a housing, a plurality of pallets, a plurality of bins, a rack assembly, a plurality of robots, a locker assembly and a centralized control system. A customer drops off a first package on a first pallet or in a first bin in a first locker of the locker assembly. A robot picks up the first package on the first pallet or in the first bin in the first locker of the locker assembly. The robot moves the first package on the first pallet or in the first bin to a first unit of the rack assembly. The robot moves a second package on a second pallet or in a second bin from a second unit of the rack assembly to a second locker of the locker assembly. Another customer picks up the second package from the second locker of the locker assembly.

Abstract: A robotic system has a vehicle, a robot, a first removable rack and a second removable rack. The robot, the first removable rack and the second removable rack are mounted on a platform of the vehicle. A plurality of latches are used to lock or unlock the first removable rack and the second removable rack. The robot comprises a rotatable base. A method uses the robotic system to move a plurality of items from a stationary rack to a designated location.

Abstract: A robotic system has a vehicle, a robot, a first removable rack and a second removable rack. The robot, the first removable rack and the second removable rack are mounted on a platform of the vehicle. A plurality of latches are used to lock or unlock the first removable rack and the second removable rack. The robot comprises a rotatable base. A method uses the robotic system to move a plurality of items from a stationary rack to a designated location.

Abstract: A robotic warehouse includes a housing, a plurality of pallets, a plurality of bins, a rack assembly, a plurality of robots, a locker assembly and a centralized control system. A customer drops off a first package on a first pallet or in a first bin in a first locker of the locker assembly. A robot picks up the first package on the first pallet or in the first bin in the first locker of the locker assembly. The robot moves the first package on the first pallet or in the first bin to a first unit of the rack assembly. The robot moves a second package on a second pallet or in a second bin from a second unit of the rack assembly to a second locker of the locker assembly. Another customer picks up the second package from the second locker of the locker assembly.

Abstract: A portable tennis apparatus comprising a tennis bag, a tennis ball retrieving unit, a stretchable back bar and an extendable bottom stand. The ball retrieving unit retrieves balls on the ground directly to the bag; the stretchable back bar can be pulled up and pushed around with rolling means on the ground easily. The top opening of the bag made it easy to reach the balls for replay. The extendable stand can raise the tennis bag at a desirable level for dispensing balls so that the player does not have to bend down. The stretchable back bar and the stand can be put back to their original position during the transportation of the apparatus, such as between tennis court and player's home. The entire apparatus is light-weighted, easily carried and operated single-handed. This apparatus is truly an “all-in-one” tennis apparatus, and a revolution in the field of tennis equipment.

Abstract: A portable tennis apparatus comprising a tennis bag, a tennis ball retrieving unit, a stretchable back bar and an extendable bottom stand. The ball retrieving unit retrieves balls on the ground directly to the bag; the stretchable back bar can be pulled up and pushed around with rolling means on the ground easily. The top opening of the bag made it easy to reach the balls for replay. The extendable stand can raise the tennis bag at a desirable level for dispensing balls so that the player does not have to bend down. The stretchable back bar and the stand can be put back to their original position during the transportation of the apparatus, such as between tennis court and player's home. The entire apparatus is light-weighted, easily carried and operated single-handed. This apparatus is truly an “all-in-one” tennis apparatus, and a revolution in the field of tennis equipment.