초록 ▼

A toothbrush having a polishing paste compartment and a plunger apparatus for forcing paste through a passageway into communication with the bristles of the toothbrush. The compartment for containing the paste may be either a refillable container or cartridge or a disposable cartridge. The plunger i

A toothbrush having a polishing paste compartment and a plunger apparatus for forcing paste through a passageway into communication with the bristles of the toothbrush. The compartment for containing the paste may be either a refillable container or cartridge or a disposable cartridge. The plunger is operated by a thumb wheel drive located at the end of the toothbrush handle.

대표청구항 ▼

A paste feed toothbrush comprising an elongated shank member having bristles and a passageway extending from one end of the shank member into open communication with the bristles, an elongated hollow cylindrical handle member having the first end securable to the shank member, a paste compartment in

A paste feed toothbrush comprising an elongated shank member having bristles and a passageway extending from one end of the shank member into open communication with the bristles, an elongated hollow cylindrical handle member having the first end securable to the shank member, a paste compartment in the handle member in communication with the shank passageway when the handle is secured to the shank, a piston member slidably carried in the paste compartment, an elongated hollow piston rod carried by the piston and extending toward the second end of the handle member, a drive knob member rotatably carried by the second end of the handle member, an elongated rotary drive rod secured to the drive knob and having a polygonal shaped cross-section and extending toward the first end of the handle, said rod being loosely receivable within the hollow piston rod, a rotary drive disc having a polygonal shaped aperture therein for slidably receiving the drive rod therethrough and for rotating with said drive rod, said drive disc being threadably disposed within the handle member and engageable with the outer end of the piston rod whereby upon rotation of the drive knob and associated drive rod, the drive disc threadably moves along the interior of the handle toward the first end thereof thereby pushing the piston through the paste compartment forcing the paste into communication with the bristles.