초록 ▼

A foldable cart assembly having a user tracking arrangement so as to follow movement of the user during motion over a field. The cart assembly has a plurality of ultrasound and RF sensors in communication with corresponding sensors in a remote handset transmission device carried by the user. The sen

A foldable cart assembly having a user tracking arrangement so as to follow movement of the user during motion over a field. The cart assembly has a plurality of ultrasound and RF sensors in communication with corresponding sensors in a remote handset transmission device carried by the user. The sensors provide timing, direction and distance information to a central processor on the cart for instructing individual electrical motors empowering the respective direction and speed of rotation of the cart's wheels.

대표청구항 ▼

1. A wirelessly controllable, electrically driven, foldable four wheeled, multi-portioned frame arrangement, articulable into and from a load carryable cart assembly system, the cart assembly system carryable by a human when the cart assembly is in a folded configuration the cart assembly comprising

1. A wirelessly controllable, electrically driven, foldable four wheeled, multi-portioned frame arrangement, articulable into and from a load carryable cart assembly system, the cart assembly system carryable by a human when the cart assembly is in a folded configuration the cart assembly comprising: an elongated lower base frame arrangement having a freewheeling pair of wheels on a first half-end thereof, and a pair of individually empowered individually computer controlled forward and reversibly rotable drive wheels on a second half-end thereof;a plurality of pivotable frame portions consisting of a “U” shaped upper handle and a pair of parallel mid-frame members extending upwardly from a pair of upwardly extending curved side bar members comprising the second half end, and wherein the first half end and the second half end of the lower base frame arrangement is foldable about a generally centrally located collapse pivot arrangement therebetween, and wherein the plurality of pivotable frame portions are pivotally connected to and foldable about one another and are hingedly attached to a transversely arranged, carry-handle-pivot-axis immovably arranged between the upper ends of the pair of curved side bar members which extend immovably upwardly from the second half end of the lower base frame arrangement, to permit the cart assembly to be folded into a compact hand-carryable configuration, carryable by the intermediately located transversely -disposed immovable carry-handle pivot axis; andwherein the cart assembly system includes a wireless user-tracking arrangement thereon, and wherein the wireless user-tracking arrangement has a sensor on an end of each of a pair of “L” shaped brackets, each attached to one of the parallel mid frame members, and which sensors send and receive signals so as to electronically instruct an onboard central processing unit computer to individually control the individually empowered drive wheels as to both a common or an opposite rotational direction and rotational speed from one another, to permit the cart assembly to track, sharply turn, and otherwise promptly follow movement or instructions of a system's user. 2. The cart assembly as recited in claim 1, wherein the system includes a user-carryable wireless transponder for transmitting wireless signals about a user's location to the wireless user-tracking arrangement on the cart assembly. 3. The cart assembly as recited in claim 2, wherein the tracking arrangement comprises the sensors which includes a pair ultrasound transponders arranged to communicate positional signals with the user-carryable wireless transponder. 4. The cart assembly as recited in claim 3, wherein the tracking arrangement includes a radio frequency transceiver for providing timing for ultrasound signals utilized by the central processing unit computer in the cart assembly. 5. The cart assembly as recited in claim 4, wherein the ultrasound sensor arrangement transmits obstacle-avoiding signals to the central processing unit computer for the cart assembly to avoid obstacles in the path of the cart assembly. 6. The cart assembly as recited in claim 3, wherein the ultrasound sensors are supported in a horizontally spaced-apart configuration on one set of frame portions to provide communicated-signal triangulation capability to the onboard central processing unit computer. 7. The cart assembly as recited in claim 1, including an independent drive motor for each drive wheel of the cart assembly. 8. A process for controlling the track, speed and direction of a collapsably foldable, central processor unit controlled, electronically motorized, individual drive wheeled, cart assembly system for use by a cart assembly user in a field of play, comprising: arranging a pair of spaced-apart wireless ultrasound transponders on a frame portion of the cart assembly;providing a carryable wireless location ultrasound transceiver device to a user of the cart assembly;sending a pair of corresponding ultrasound signals from the ultrasound transponders on the cart assembly to and receiving returned back ultrasound signals from the location transceiver device carried by a user;timing the pair of received ultrasound signals received back to the cart assembly by an onboard RF transponder;communicating the signals received by the ultrasound transponder and the RF transponder to the central processing unit computer;triangulating the signals so as to govern the electronic instructions to the individual drive wheels as to both their individual direction of rotation and their individual speed of rotation for the cart assembly to follow the user's instructions carrying the transponder device; andoperating the carryable device as a remote control to instruct the cart assembly to autonomously advance to a user-desired destination position. 9. The method as recited in claim 8, including: sensing motion and direction of a remote device carried by a user of the system. 10. The method as recited in claim 8, including: instructing drive wheels on the cart pursuant to sensed direction, speed and distance of the user carrying the remote device. 11. The method as recited in claim 10, wherein the instruction to the individual drive wheels from the central processing unit is different for each wheel. 12. The method as recited in claim 10, wherein the instruction to the individual drive wheels includes an instruction to rotate at different speed from one another. 13. The method as recited in claim 10, wherein the instruction to the individual drive wheels includes an instruction to rotate at different direction from one another. 14. A pivot-axis-grabable, hand-carryable, collapsible wheeled load carryable autonomously mobile cart assembly system comprising: an articulable lower frame foldable onto itself about a mid-lower frame-located collapse-pivot-arrangement, the lower frame having two independently empowered drive wheels at a rear end thereof;an articulable upper frame connected to the rear end of the lower frame the articulable upper frame consisting of a air of curved side bar members fixedly connected to a rear axis at a lower rear end thereof, and to one another at an upper end thereof b a transversely -disposed immovable, cart-assembly-carry-handle pivot-axis onto which carry-handle-pivot-axis, a pair of articulable mid-frame members are hingedly attached, which mid-frame members pivotally support a “U” shaped upper handle, and from which pair of mid-frame members, a first and a second sensor transponder arrangement are also respectively supported; anda central processing unit on the cart assembly to instruct the empowered drive wheels as to individual rotational requirements as to each individual first and second drive wheel's speed of rotation and each individual first and second drive wheel's common direction of rotation or each individual first or second drive wheel's sharp-U-turn-inducing opposite direction of rotation from its adjacent second or first drive wheel's direction of rotation upon receipt of the central processing unit receiving time, direction and distance information from the first and second sensor transponder arrangement. 15. The cart assembly system as recited in claim 14, including a user carryable handset for receiving and for transmitting position signals with respect to the user and the cart assembly. 16. The cart assembly as recited in claim 15, wherein the first sensor arrangement consists of a pair of spaced apart ultrasound signal transponders for communication with an ultrasound transponder in the carryable handset. 17. The cart assembly as recited in claim 15, wherein the first sensor arrangement consists of an RF signal transponder in communication with an RF transponder on the carryable handset. 18. The cart assembly as recited in claim 17, wherein the RF signal transponder in the cart assembly provides a time stamp instruction to the ultrasound signals communicated to the central processing unit in the cart assembly.