Claims:We Claim:

1. A toothpaste dispensing toothbrush, said toothbrush comprises: a hollow handle; a bristle head having a front surface with bristles, a rear surface, a top end and a bottom end which connects to a conduit to the handle; the bristle head has a slit for dispensing toothpaste; a slider mechanism in the handle comprising a slider knob for exerting pressure on the toothpaste for dispensing.

2. The toothpaste dispensing toothbrush as claimed in claim 1 wherein, the handle has a top surface and a bottom surface, said top surface is temporarily removable for placing a toothpaste cartridge with the handle.

3. The toothpaste dispensing toothbrush as claimed in claim 1 wherein, the slit is a vertical slit extending between the top end and the bottom end or a horizontal slit, running perpendicular to line between bottom end and top end.

4. The toothpaste dispensing toothbrush as claimed in claim 1 wherein the slider mechanism comprises of a vertical gap on the top surface of the handle, said gap has extension for positioning of slider knob.

5. The toothpaste dispensing toothbrush as claimed in claim 1 wherein the extension for positioning of slider knob, is in form of small square extensions, or zigzag shape.

6. The toothpaste dispensing toothbrush as claimed in claim 1 wherein the slider knob is attached to a slider which length runs through the length of the vertical gap.

7. The toothpaste dispensing toothbrush as claimed in claim 1 wherein the slider knob is a hemispherical body with side projections and a central projection.

8. The toothpaste dispensing toothbrush as claimed in claim 1 wherein the side projections can slide within two vertical slits on each side of the vertical gap.

9. The toothpaste dispensing toothbrush as claimed in claim 1 wherein the toothpaste cartridge can be placed inside the toothbrush handle such that on moving the slider knob upwards, an end portion of the slider exerts pressure onto the cartridge, thereby dispensing the toothpaste from the cartridge through the conduit to the slit and holes in front of the bristle head.

10. The toothpaste dispensing toothbrush as claimed in claim 1 whereinthe hollow handle has a hollow space for housing of cartridge within which the toothpaste cartridge can be placed into.

11. The toothpaste dispensing toothbrush as claimed in claim 1 wherein the cartridge housing has extended knob like portions for keeping the cartridge in place.

12. The toothpaste dispensing toothbrush as claimed in claim 1 wherein the distance at which slider knobs rests, between the slider knob positioners allows to apply pressure of the toothpaste cartridge, so as to only dispense a fixed desired quantity of toothpaste.

, Description:Field of Invention:
Present invention relates to a toothpaste dispensing toothbrush capable of dispensing a desired amount of toothpaste onto the bristles. The toothbrush comprises of a sliding arrangement for dispensing a desired amount of toothpaste.

Background of Invention:
US 5908257 discloses a toothbrush which has a hollow handle comprising toothpaste therein and to dispense the toothpaste onto the toothbrush bristles. The toothbrush generally comprises a hollow handle disposed wherein isdisposable toothpaste containing cartridge supported within its interior.A piston mechanism isthreadably attached to its bottom end of the handle, which forces the toothpaste out of the handle into a conduit formed through the brush head. Valves allow toothpaste to flow from the conduit onto the bristles of the toothpaste while preventing water or other fluids from flowing into the conduit to contaminate the toothpaste supply.

US 20070183838 discloses a toothbrush with a toothpaste dispenser. The handle has a toothpaste chamber defined in the handle. The distal opening is adapted for loading toothpaste into the toothpaste chamber and accommodating a plunger. A resilient flapper valve is disposed in the brush head conduit, and is normally open so that the plunger may be used to force toothpaste through the handle onto the bristles. The toothbrush is provided with a removable cap having a stopper that slides into an axial bore in the brush head to force the flapper valve into a closed position. There are various disadvantages associated with the prior art. Each time the toothpaste has to be emptied from another package into the compartment which is a time consuming and tedious process.Plunger seems to be a separate element which requires a good force to squeeze the paste to the head.Over forcing of the plunger will lead to large amount of paste dispensed to the bristles since no predefined stops are provided to the plunger to operate.If the user has to replace the toothpaste with a different flavor he has to essentially clean the loading chamber which is a tedious process. Furthermore, because of the flat edge in the plunger user would have to use large force to move the plunger and the plunger has to be efficiently designed so that the toothpaste does not make reverse action leaking it backward.

The toothbrush of present invention iseconomic, because of low cost manufacturing. Also, the user can just buy cartridges available in different flavors that can be easily loaded and unloaded without much time consumption. The slider knob with defined stopping will limit the toothpaste disposal on each stroke so that even children do not need the adult supervision towards usage of the device. The uniform and single body design will ensure good strength the brush which even during strong pressured strokes. There is no requirement for the user to clean the device anytime before loading a new cartridge since each cartridge is unique and constructed. The toothbrush of present invention is designed in a manner such for avoiding the leakage of toothpaste.

Summary of Invention:
According to an aspect of the invention, there is provided a toothpaste dispensing toothbrush, said toothbrush comprises: a hollow handle; a bristle head having a front surface with bristles, a rear surface, a top end and a bottom end which connects to a conduit to the handle; the bristle head has a slit for dispensing toothpaste; a slider mechanism in the handle comprising a slider knob for exerting pressure on the toothpaste for dispensing.

Yet according to an aspect of the invention, the handle has a top surface and a bottom surface, said top surface is temporarily removable for placing a toothpaste cartridge with the handle.

Yet according to an aspect of the invention, the slit is a vertical slit extending between the top end and the bottom end or a horizontal slit, running perpendicular to line between bottom end and top end.

Yet according to an aspect of the invention, wherein the slider mechanism comprises of a vertical gap on the top surface of the handle, said gap has extension for positioning of slider knob.

Yet according to an aspect of the invention, wherein the extension for positioning of slider knob, is in form of small square extensions, or zigzag shape.

Yet according to an aspect of the invention, wherein the slider knob is attached to a slider which length runs through the length of the vertical gap.
Yet according to an aspect of the invention, wherein the slider knob is a hemispherical body with side projections and a central projection.

Yet according to an aspect of the invention, wherein the side projections can slide within two vertical slits on each side of the vertical gap.

Yet according to an aspect of the invention, wherein the toothpaste cartridge can be placed inside the toothbrush handle such that on moving the slider knob upwards, an end portion of the slider exert pressure onto the cartridge, thereby dispensing the toothpaste from the cartridge through the conduit to the slit on bristle head.

Yet according to an aspect of the invention, wherein the hollow handle has a hollow space for housing of cartridge within which the toothpaste cartridge can be placed into.

Yet according to an aspect of the invention, wherein the cartridge housing has extended knob like portions for keeping the cartridge in place.

Yet according to an aspect of the invention, wherein the distance at which slider knobs rests, between the slider knob positioners allows to apply pressure of the toothpaste cartridge, so as to only dispense a fixed desired quantity of toothpaste.

Brief description of Drawings:
The above-mentioned features and other advantages of this present disclosure, and the manner of attaining them, will become more apparent and the present disclosure will be better understood by reference to the following description of embodiments of the present disclosure taken in conjunction with the accompanying drawing, wherein:

Figure 1 shows a complete view of the toothbrush of invention.
Figure 2 shows a view of slider knob.
Figure 3 shows housing of thecartridge within the handle of toothbrush.
Figure 4 discloses slider knob positioners.
Figure 5 discloses design of toothbrush cartridge.
Figure 6 discloses top view showing opening and slider moving positioners.

Detailed description of Invention:
Reference will now be made in detail to the exemplary embodiment of the present disclosure. Before describing the detailed embodiments that are in accordance with the present disclosure, it should be observed that the embodiment resides primarily in combinations arrangement of the system according to an embodiment herein and as exemplified in FIG. 1 through Figure 6.

Any embodiment described herein is not necessarily to be construed as preferred or advantageous over other embodiment. All of the embodiment described in this detailed description are illustrative, and provided to enable persons skilled in the art to make or use the disclosure and not to limit the scope of the disclosure, which is defined by the claims.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present embodiment without departing from the spirit and scope of the invention. Thus, it is intended that the present embodiment and disclosure cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

In the following description, for the purpose of explanation, numerous specific details are set forth in order to provide a thorough understanding of the arrangement of the system according to an embodiment herein. It will be apparent, however, to one skilled in the art, that the present embodiment can be practiced without these specific details. In other instances, structures are shown in block diagram form only in order to avoid obscuring the present invention.

Figure 1 discloses a toothpaste dispensing toothbrush 100. The toothbrush comprises of a hollow handle 101; a bristle head 102 having a front surface 102f with bristles103, a rear surface102r, a top end 102t and a bottom end 102b. The bottom end 102b of the toothbrush 100 connects to a conduit 104 of the handle101. The bristle head 102 has a slit 105 for dispensing toothpaste.The handle 101 has a top surface 101t and a bottom surface 101b. The top surface 101t is temporarily removable for placing a toothpaste cartridge 107 within the handle 101. The slit 105 may be a vertical slit extending between the top end 102t and the bottom end 102b or a horizontal slit, running perpendicular to line between bottom end 102b and top end102t.

A slider mechanism is provided in the handle101 comprising a slider knob 106 for exerting pressure on the toothpaste for dispensing. The slider mechanism comprises of a vertical gap 110on the top surface 101t of the handle, said gap 110has extensions 108 (shown in Figure 4)across for positioning of slider knob106. The extensions 108 may be in form of small projections or zigzag shape. The slider knob 106 is formed as a protrusion on a slider 109 which length runs through the length of the vertical gap110. The distance at which slider knob 106 rests, between the slider knob positioners 108 allows to apply pressure on toothpaste cartridge 107, so as to only dispense a fixed desired quantity of toothpaste.
The toothpaste cartridge 107 (shown in Figure 5)can be placed inside the toothbrush handle 101 such that on moving the slider knob 106 upwards, an end portion of the slider 109 exert pressure onto the cartridge107, thereby dispensing the toothpaste from the cartridge107 through the conduit104 to the slit 105 on bristle head102.

The hollow handle 101 has a hollow space 111 for housing 112 within which the toothpaste cartridge 107 can be placed into, as shown in Figure 3. The cartridge housing 112 has extended knob like portions 113 for keeping the cartridge107 in place.
According to an embodiment of the invention, the vertical gap may not have a slider, and the slider knob may not be a protrusion kind on a slider, but may be an independent unit as shown in Figure 2. The slider knob200 has three projections, placed on a curved hemispherical body 201. The central projection 202 striped, so as to form an easy grip of the thumb, while moving the slider knob200.The side projections 204 oneon either side of the central projection 202. The side projections 204 are adjusted within two side gaps 205 on each side adjacent to vertical gap110.
When the user makes a single stroke tooth paste proceeds forward through the hollow handle and gets applied to the bristles through the slit.
According to an embodiment of the invention, the slit is closed with a spring action mechanism that opens only when the paste pressurizes it from the bottom and automatically closes with the spring force after ejection of paste to the bristles, this mechanism ensures that no water or saliva enters inside the hollow provision of the handle making it hygienic for each use.
Furthermore, the user is also aware of the number of times the user has brushed with the available paste in the cartridge through the remaining number of limited progressions left in the knob for pressing and ejecting the paste and can easily replace the cartridge for the next need or after a month’s time the brush itself can be replaced with a new one and a new cartridge as per the doctors’ advice to change tooth brushes every month.
Thus the user saves a lot of time in applying toothpaste every time and also unwanted wastage of paste due to over pressure is avoided at the same time exact quantity of toothpaste as good to a human for brushing each time will be applied that will last the teeth life for longer.