Toothbrush with a replaceable toothpaste cartridge

Abstract

The present invention provides a reusable toothbrush with a replaceable toothpaste cartridge, which allows the replacement of the cartridge ( 3 ) after the entire quantity of the toothpaste has been exhausted, so that the toothbrush does not need to be disposed of. Additionally, its bristle ( 20 ) is protected from contamination before usage by means of a cap ( 4 ), while the hardening of toothpaste is prevented. The present invention has two distinct functions, namely the extraction of fluid from the replaceable toothpaste cartridge ( 3 ) and resetting the device before the replacement of the replaceable toothpaste cartridge ( 3 ). The toothbrush comprises a toothbrush handle ( 1 ) intended to carry said bristle ( 20 ) and membrane ( 21 ), the latter being removably attached to a hollow shank ( 19 ), and which houses the replaceable toothpaste cartridge ( 3 ) and the mechanism for extracting toothpaste from the replaceable cartridge ( 3 ), which can be reset in order to replace the replaceable cartridge ( 3 ).

1 . A toothbrush with a replaceable toothpaste cartridge, comprising a toothbrush handle ( 1 ), a hollow shank ( 19 ) removable attached to toothbrush handle ( 1 ) on whose upper part are removable attached a bristle ( 20 ) and a membrane ( 21 ), which can together be covered with a cap ( 4 ); a replaceable cartridge ( 3 ) housed by toothbrush handle ( 1 ) and a mechanism for the extraction of toothpaste from a replaceable cartridge ( 3 ), which can be reset in order to replace said replaceable cartridge ( 3 ). 
     
     
         2 . The toothbrush with a replaceable toothpaste cartridge according to  claim 1 , characterized in that inside a toothbrush handle ( 1 ) houses an axially shifting plunger ( 5 ), shaped like a cartridge, whose closed end faces shank ( 19 ), while its open end, ending in a wreath-shaped base of plunger ( 5 ) faces the opposite side, having an internal thread defined on the inside of plunger ( 5 ). 
     
     
         3 . The toothbrush with a replaceable toothpaste cartridge according to  claim 1 , characterized in that inside plunger ( 5 ) houses a pressure spindle ( 6 ) shaped like an elongated hollow cylinder in the middle and ending in a head with an external thread defined, intended to mesh with the internal thread of plunger ( 5 ), also with a transitional part shaped like a truncated cone between the head and the middle of pressure spindle ( 6 ), while the pressure spindle ( 6 ) has a disc-shaped base at its lower end, by means of which a plunger coupling ( 7 ) is attached to pressure spindle ( 6 ), which at its upper end has defined axial grooves, as well as a saddle in its upper region, intended to mate with a rubber spring ( 8 ) for a radial spacing of pressure spindle ( 6 ) arms formed by the axial grooves, while the external thread of said pressure spindle ( 6 ) engages the internal thread of plunger ( 5 ), and at its lower end, above the disc-shaped base, pressure spindle ( 6 ) has axial slots intended to mate with axially-shifting pins of a reverser driver ( 11 ) positioned in the lower part of the central cavity of pressure spindle ( 6 ). 
     
     
         4 . The toothbrush with a replaceable toothpaste cartridge according to  claim 1 , characterized in that a toothbrush handle ( 1 ), on the opposite the shank ( 19 ), is permanently attached to a bridge ( 2 ), which is connected to a rotary switch ( 10 ) at its other end, in a way that it is rotationally shifting relative to the bridge ( 2 ), while between bridge ( 2 ) and rotary switch ( 10 ) a torsion spring ( 17 ) is positioned, having its one end attached to bridge ( 2 ), and the other to rotary switch ( 10 ). 
     
     
         5 . The toothbrush with a replaceable toothpaste cartridge according to  claim 1 , characterized in that a rotary switch ( 10 ) is attached to a rotary claw ( 12 ) with radially defined angled teeth at the end facing toothbrush handle ( 1 ), while opposite the radially defined angled teeth of rotary claw ( 12 ) there are complementarily defined angled teeth of the plunger coupling ( 7 ), while plunger coupling ( 7 ) and rotary claw ( 12 ), positioned coaxially one relative to the other, each have one centrally defined opening. 
     
     
         6 . The toothbrush with a replaceable toothpaste cartridge according to  claim 1 , characterized in that a reverser driver ( 11 ) and pressure spindle ( 6 ) are housed in a reverser assembly ( 9 ) composed of two mutually connected parts ( 9 . 1 ,  9 . 2 ), which are axially shifting along pressure spindle ( 6 ), while the pins defined on reverser driver ( 11 ), already mating with the axial grooves defined on pressure spindle ( 6 ), also mate with the slots of reverser assembly ( 9 ) defined on its parts ( 9 . 1 ,  9 . 2 ). 
     
     
         7 . The toothbrush with a replaceable toothpaste cartridge according to  claim 1 , characterized in that a reverser driver ( 11 ) passes through the central openings of plunger coupling ( 7 ) and rotary claw ( 12 ), while leaning against the central ring-shaped projection of a reset button ( 13 ), which has a circular base from which two coaxially arranged ring-shaped projections: an outer, shorter projection inserted inside rotary switch ( 10 ), and an inner, longer projection leaning against reverser driver, while reset button ( 13 ) and reverser driver ( 11 ) are mutually connected via a screw ( 14 ). 
     
     
         8 . The toothbrush with a replaceable toothpaste cartridge according to  claim 1 , characterized in that a return spring ( 15 ) rests on a ring-shaped projection in the middle of a toothbrush handle ( 1 ), while on the lower side it leans against the base of plunger ( 5 ), in order to push plunger ( 5 ) towards reset button ( 13 ). 
     
     
         9 . The toothbrush with a replaceable toothpaste cartridge according to  claim 1 , characterized in that a compression spring ( 16 ) is positioned in such manner that at one end it leans against reset button ( 13 ), and at the other end against rotary claw ( 12 ). 
     
     
         10 . The toothbrush with a replaceable toothpaste cartridge according to  claim 1 , characterized in that the lower side of shank ( 19 ) has a saddle defined, for the purpose of accepting a cartridge gasket ( 18 ).