Automated engine oil change system and method

Abstract

The present invention encompasses a system and method for automatically replacing vehicle fluid, such as engine oil, with a robotic serving unit or robotic machine. The robotic machine comprises a motorized, autonomously maneuverable unit that has on its top a drainage arm to connect with an oil drain plug of a vehicle. In a preferred embodiment, the oil drain plug comprises a hollow interior for the drainage arm to connect with and drain the oil, and can also comprise a sealable element to retain the oil.

What is claimed is: 
     
         1 . A system for changing the engine oil of a motor vehicle comprising:
 a customer identification and processing unit for storing and transmitting customer identification data;   a robotic servicing unit operatively connected to the identification and processing unit for servicing the vehicle upon receipt of an authorization signal, the robotic unit comprising a tube for inserting into an existing oil drain plug in the vehicle and a pump for transferring oil, and further comprising storage reservoirs for used oil and one or more types of engine oil;   a signal communicator for directing the robotic unit to a vehicle and receiving information from and controlling the robotic unit, and for producing a signal authorizing payment and approving servicing for the vehicle.   
     
     
         2 . The system of  claim 1  wherein the oil drain plug comprises a sealable opening and hollow interior to allow the flow of fluid from one elongated end of the plug to the other, and wherein the exterior bolt head section on one elongated end of the oil drain plug can be connected to a drainage arm of the robotic unit, and wherein the drain plug contains in its hollow interior a resistance device to seal a plugging device against the opening of the drain plug when the drainage arm is not connected to the drain plug at the exterior bolt head section. 
     
     
         3 . The system of  claim 1  wherein the tube for inserting into an existing oil drain plug is connected to a drainage arm, and the drainage arm is controlled by a motor on the robotic unit, and the drainage arm further comprises an end tube that can be directed against the oil drain plug to allow the insertion of the end tube into the drain plug. 
     
     
         4 . The system of  claim 1 , wherein the robotic unit comprises multiple reservoirs for holding used oil. 
     
     
         5 . The system of  claim 1  wherein the robotic unit comprises multiple reservoirs for fresh oil. 
     
     
         6 . The system of  claim 1  further comprising a rest station for the robotic unit. 
     
     
         7 . The system of  claim 1  wherein the oil drain plug comprises a tag for allowing the robotic unit to precisely locate the position of the oil drain plug. 
     
     
         8 . The system of  claim 2 , wherein the oil drain plug comprises an additional drain connection port or opening. 
     
     
         9 . The system of  claim 2  wherein the oil drain plug comprises at least one valve to allow or prevent the flow of fluid. 
     
     
         10 . A method of operating a robotic machine to change the engine oil in a vehicle, the method comprising: maneuvering the robotic machine to an oil drain plug of a vehicle using a tag located on or near the drain plug as a locating tag or beacon; extending a drainage arm on the top of the robotic machine towards the oil drain plug; extending an end tube of the drainage arm into the outer surface of the oil drain plug; and removing the oil from the vehicle, wherein the oil drain plug comprises an exterior bolt head section on one elongated end of the oil drain plug, which section can be connected to the end tube of the drainage arm of the robotic unit, and wherein the drain plug contains a hollow interior and a resistance device in the hollow interior to seal a plugging device against the opening of the drain plug when the end tube is not connected to the drain plug. 
     
     
         11 . The method of  claim 10  further comprising authorizing the robotic unit to maneuver to the vehicle by a computerized customer order system and database. 
     
     
         12 . The method of  claim 11 , wherein the database comprises vehicle information for locating the oil drain pan of a vehicle. 
     
     
         13 . The method of  claim 10 , further comprising moving the drainage arm based on the location tags positioned on the oil drain plug or a washer connected to the oil drain plug. 
     
     
         14 . The method of  claim 10  further comprising replacing the oil with fresh oil stored in the robotic unit.