Dentifrice dispensing toothbrush with refillable cartridge
Patent 5909977 Issued on June 8, 1999. Estimated Expiration Date: 
March 31, 2017. 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 31, 2017. 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 ReferencesFilling toothbrush Fountain toothbrush Dentifrice dispensing toothbrush with replaceable cartridge Toothpaste dispenser Patent #: 5393153 InventorApplicationNo. 829242 filed on 03/31/1997US Classes:401/146, In or at feeder401/150, Piston in cylinder401/171Piston-provided reservoirExaminersPrimary: Walczak, David J.Attorney, Agent or FirmInternational ClassB43K 005/02AbstractA dentifrice dispensing toothbrush utilizes a refillable cartridge for storing dentifrice material and a compressible elastic button for pumping dentifrice material from the cartridge to a brush head. The refillable cartridge has special adaptive features for mounting to different sized openings of toothpaste tubes to facilitate cartridge refilling and venting entrapped air.The essential components of the dentifrice dispensing toothbrush include 1) a brush head having an outlet opening therethrough and a series of bristles; 2) a pump assembly which has a pump chamber, an elastic compressible button and a base having a flap check valve; 3) a housing for attaching a refillable cartridge; 4) a refillable cartridge having an adaptive annular lip on its top opening for mating with the opening of a toothpaste tube and a plurality of shallow grooves for venting entrapped air, and a two-way follower disc for packing the dentifrice material. The dentifrice dispensing toothbrush optionally includes 5) a venting flip-cap for attachment to a toothpaste tube for releasing entrapped air when a cartridge is being refilled; and 6) a brush cover which seals the outlet opening of the brush head.Field of SearchIn or at feederInflexible solid means Piston in cylinder Encompassed by confining means for tool elements Slidable piston INCLUDING FLOATING FOLLOWER IN RESERVOIR With removable cap for tool By piercing cartridge Sealed-cartridge receiver with flow-establishing means Supply container delivering to receiving chamber Fluid pressure generating pump or pulsator and/or removable flexible wall closures | |
