Toothbrush and paste dispenser
OwnerPhilip H. English, Anthony D. Szpakinventors
Life of this patent
Estimating the term…
Abstract
A toothbrush and toothpaste dispenser unit comprising a brush head with a longitudinally extending toothpaste receiving and dispensing opening provided therein, and a disposable toothpaste receiver and dispenser cartridge which engages the brush head and connects to the opening in the brush head. A dispensing piston, and a drive screw are present with the cartridge while a drive member for the screw is present and it includes a one way rotary drive means. The cartridge has an outer sleeve which forms a handle for the dispenser unit. The unit has a single wall thickness, i.e. the outer sleeve of the cartridge, in the cartridge portion of the unit.
Claims9
A toothbrush and toothpaste dispenser unit comprising:
- a longitudinally extending brush head having bristles, a flexible upright discharge tube terminating near the tips of said bristles, and a longitudinally extending toothpaste receiving and dispensing opening provided therein whereby the opening forms a very shallow open recess along a substantial length of brush head;
- a thin closure plate covering the open recess to define with the opening an elongated narrow channel extending a substantial length of the brush head;
- a longitudinally extending disposable pre-filled toothpaste receiver and dispenser cartridge having a forward end and a back end, said cartridge at tis forward end engaging said brush head in a sealed relationship, said cartridge containing a toothpaste composed of a glycerin base which has very low thickening or hardening properties and including a rigid outer sleeve which forms a handle for and exterior wall of said unit, said outer sleeve constituting the sole wall thickness in the cartridge portion of said dispenser unit;
- a dispensing piston having a radially outwardly flared resilient sealing lip resiliently and sealingly engaging the inner surface of said outer sleeve, said piston having an internally screw threaded opening for receiving a drive screw, an externally threaded drive screw for said piston, means to prevent rotation of said piston, and discharge opening means for permitting flow of toothpaste from said cartridge to said receiving and dispensing opening formed in said brush head;
- a rotary drive means for said screw comprising an end cap at the back end of said cartridge for rotatably engaging an end of said screw;
- and
Dependencies are inferred from the claim text.