Toothbrush and toothpaste system
Patent 5039244 Issued on August 13, 1991. Estimated Expiration Date: 
March 14, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 14, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 677667 841946 1212010 1590547 1742157 2033197 2243774 2274790 2278253 Automatic tooth-paste-supplying tooth brush InventorApplicationNo. 493468 filed on 03/14/1990US Classes:401/176, Slidable piston401/179, Including mechanical-movement actuator401/278, Resiliently biased401/279Including mechanical-movement actuatorExaminersPrimary: Bratlie, Steven A.Attorney, Agent or FirmForeign Patent References
International ClassA46B 011/02AbstractA toothbrush and toothpaste system utilizing a container for the toothpaste which includes a chamber having a movable piston within the same. A spline is generally centrally located within the chamber with the movable piston circumjacently located relative to the spline. The piston is intended to contact toothpaste which is loaded within the chamber. The pistons movement is biased in one direction along the line. A head is connected to the container and includes a bristle structure usable as a toothbrush. The head includes a passageway which communicates with the adjacent chamber of the container and the bristle structure of the head. A valve separated by movement of the spline opens the passageway permitting communication between the chamber and the bristle structure. Springs means is also included for closing the valve relative to the container. The piston continually moves along the spline during the delivery of toothpaste to the bristle structure in only one direction within the chamber of the container. | |
