WO2023041960A1

WO2023041960A1 - Paintbrush with a replaceable brush bristle head

Info

Publication number: WO2023041960A1
Application number: PCT/IB2021/058525
Authority: WO
Inventors: Andre MONTHY; Jalal MONTHY
Original assignee: Monthy Andre; Monthy Jalal
Priority date: 2021-09-19
Filing date: 2021-09-19
Publication date: 2023-03-23

Abstract

A paintbrush with an easily interchangeable and replaceable brush bristle head. The paintbrush has a paintbrush handle to be gripped by the user. At the top of the handle, there is an elongate recess. Within this elongate recess, there are indents. These indents are to accommodate the mirroring extrusion on the replaceable brush head. This extrusion on the replaceable brush head can deform via a cantilever to click into the matching indents within the elongate recess of the handle in order to hold the replaceable brush bristle head in place, and only be released when deliberate force is applied. The replaceable brush bristle head has thin walls to accommodate bristles which will be held in place by an adhesive. In the middle of the replaceable brush bristle head is an integrated spacer to create a reservoir for paint within the bristles to aid in paint storage and delivery.

Description

Background Of The Invention

One problem with painting is the large number of paintbrushes being discarded after use. For example, a painter may buy a pack of 6 paintbrushes of varying sizes, only use one or two brushes once, and then throw away all brushes in the pack. This introduces a large volume of wasted material.

Moreover, while painting, painters will find themselves wasting a lot of time washing paintbrushes after use in order to save them for later use or change paint. However, apart from just wasting time, often the paintbrush cannot be saved for later use due to the paint stiffening the bristles over time, therefore making the brush unusable.

While painting the painter may want to change the paintbrushes length, size, or shape in order to complete their painting task. However, with regular paintbrushes in order to change the paintbrushes length, size, or shape a completely fresh brush will need to be soiled with paint, only to be thrown away later. This increases the amount of material wasted.

Often when a painter wants to change paint type or colour they will incur the use of white spirit or another corrosive paintbrush cleaner in order to clean the previous paint off the bristles. This is often used with oil-based paints that cannot be washed with water alone. However, this introduces the problem that another material is being wasted, in this case, the white spirit or paintbrush cleaner. Moreover, the use of these products is often not environmentally friendly and could be hazardous to the health of the painter.

A large number of paintbrushes are produced with plastic handles that are non- biodegradable. When the paintbrushes are disposed of by the painter this non- biodegradable plastic eventually fills up landfills and pollutes the ocean which causes damage to the environment.

Most paintbrushes are manufactured with a metal band to hold in place the handle and bristles. This metal band is an unnecessary component adding more wastage.

Our invention is intended to solve the problems of traditional paintbrushes described above.

Summary Of The Invention

This summary is provided to introduce a selection of concepts in a simplified form that is further elaborated below in the Detailed Description. This summary is not designed or intended to identify all the key features or essential features of the invention, nor is it intended to be used to limit the scope of the invention.

In order to reduce the large waste of paintbrush handles being thrown away after use, our invention proposes that the handle of our paintbrush be used as a permanent tool, where a range of interchangeable replaceable brush bristle heads, of different lengths, shapes, and sizes, can be attached and removed from the handle. There will also be a range of lengths, sizes, and shapes of handles for the user to choose from. When the painter wants to wash the brush for later use or change the paint, which will waste time, our invention proposes that the painter simply remove the replaceable brush bristle head, store it or dispose of it and then replace it with a new unsoiled replaceable brush bristle head. This process of replacing the replaceable brush bristle head will only take the user a few seconds, whereas washing the paintbrush would take considerably longer.

Furthermore, if the painter wishes to switch to another brush length, shape, or size he would normally have to use a completely new brush that will likely be thrown away after use, causing material waste. Our invention proposes that the painter simply remove the old replaceable brush bristle head of any length, size, or shape, store or dispose of it and then replace it with a new replaceable brush bristle head of any length, shape, or size onto the permanent handle. This will reduce the amount of wastage as the handle is not being thrown away, only the replaceable brush bristle head is being disposed of.

When the painter wants to change the paint type or colour, instead of using white spirit or paintbrush cleaner to clean the soiled bristles our invention proposes the option to simply replace the replaceable brush bristle head of any length, size, or shape with a new replaceable brush bristle head. This will therefore prevent the use of white spirit or paintbrush cleaner. This will have the effect of mitigating the potential negative impact of the use of white spirit or paintbrush cleaner on the painter's health and the environment while also reducing the wastage of white spirit and brush cleaner.

As a large number of paintbrushes are manufactured with non-biodegradable plastic, when they are disposed of, they will contribute to the filling of landfills and pollution of the ocean, negatively impacting the environment. In order to reduce this aforementioned negative impact, our invention proposes that the handle of the paintbrush be used as a permanent tool and for only the replaceable brush bristle heads to be replaced or disposed of. In addition, the entire replaceable brush bristle head will be made of biodegradable materials for their disposal not to contribute to the negative impact on the environment.

The usual construction of a paintbrush uses a metal band in order to hold together the bristles and the handle. However, when the brush is disposed of, this metal has been wasted. In order to reduce this wastage, our invention eliminates the use of such metal bands.

Brief Description Of The Drawings

The description set forth below, as well as other objects, features, and advantages of the present invention, will be more fully appreciated by referring to the detailed description and the drawings that follow.

Corresponding numerals, labels, and symbols in the different figures generally refer to corresponding or similar parts, and this should be made clear by the context of their use. The figures are drawn to clearly illustrate and exemplify the relevant aspects of the embodiments and are not necessarily drawn to scale. FIG. 1 A is a front view of the preferred embodiment of the invention, a paintbrush with replaceable brush bristle heads

FIG. 1 B is a cross-sectional view, Labelled B-B, of FIG. 1 D

FIG. 1 C is a cross-sectional view, Labelled A-A, of FIG. 1 A

FIG. 1 D is a side perspective view of the preferred embodiment from FIG. 1 A

FIG. 1 E is an angled perspective view of the replaceable brush bristle head detached from the handle

FIG. 1 F is an angled perspective view of the handle detached from the replaceable brush bristle head.

Within FIG. 1 all the components are shown with the bristles and adhesive, however, this is not shown in subsequent figures.

FIG. 2A is an angled view of the preferred embodiment from FIG. 1

FIG. 2B is a top view of the preferred embodiment from FIG. 1

FIG. 2C is a front view of the preferred embodiment from FIG. 1

FIG. 2D is a detailed view of the circular section labelled B

FIG. 2E is a side view of preferred embodiment from FIG. 1

FIG. 2F is a cross-sectional view, Labelled A-A, of FIG 2E

FIG. 2G is an angled view of the paintbrush, with a thinner handle

FIG. 2H is a front view of the preferred embodiment from FIG. 2G

FIG. 2I is an angled view of a paintbrush, with a triangular replaceable brush bristle head and thick handle.

FIG. 2J is a top view of the preferred embodiment from FIG. 2I

FIG. 2K is a front view of the preferred embodiment from FIG. 2I

FIG. 2L is an angled view of a paintbrush, with a triangular replaceable brush bristle head and thinner handle.

FIG. 2M is a front view of the preferred embodiment from FIG. 2L

FIG. 2N is an angled view of a paintbrush, with a circular replaceable brush bristle head and thick handle.

FIG. 20 is a top view of the preferred embodiment from FIG. 2N FIG. 2P is a front view of the preferred embodiment from FIG. 2N

FIG. 2Q is an angled view of a paintbrush, with a circular replaceable brush bristle head and thinner handle.

FIG. 2R is a front view of the preferred embodiment from FIG. 2Q

FIG. 3A is a cross-sectional view, labelled A-A, of FIG. 3E

FIG. 3B is a detailed view of the circular section labelled C

FIG. 3C is a detailed view of the circular section labelled B

FIG. 3D is a top view of the preferred embodiment from FIG. 3E

FIG. 3E is a side view of an extended version of the paintbrush handle from FIG 1 , with an additional elongate recess at 90 degrees to the original, such that the replaceable brush bristle head can be attached at 4 orientations, each separated at 90 degrees.

FIG. 3F is a side view of a thinner version of the handle from FIG. 3E

FIG. 3G is a detailed view of the circular section labelled D

FIG. 3H is an angled view of the preferred embodiment from FIG. 3F

FIG. 3I is a side view of the 45 degree angled version of the preferred embodiment from FIG. 3E

FIG. 3J is a side view of a thinner version of the handle from FIG. 3I

FIG. 3K is a detailed view of the circular section labelled E

FIG. 3L is an angled view of the preferred embodiment from FIG. 3J

FIG. 3M is a side view of the 90 degree angled version of the preferred embodiment from FIG. 3E

FIG. 3N is a side view of a thinner version of the handle from FIG. 3M

FIG. 30 is a detailed view of the circular section labelled F

FIG. 3P is an angled view of the preferred embodiment from FIG. 3N

FIG. 4A is a cross-sectional view, labelled A-A, of FIG. 4C

FIG. 4B is a top view of the preferred embodiment from FIG. 4C

FIG. 4C is a cylindrically shaped paintbrush handle with a circular replaceable brush bristle head attached FIG. 4D is a top view of the preferred embodiment from FIG. 4E

FIG. 4E is a cylindrically shaped paintbrush handle with a rectangular replaceable brush bristle head attached

FIG. 4F is a detailed view of the circular section labelled D

FIG. 4G is a detailed view of the circular section labelled C

FIG. 4H is a detailed view of the circular section labelled B

FIG. 41 is a top view of the preferred embodiment from FIG. 4J

FIG. 4J is a longer version of the preferred embodiment from FIG. 4C

FIG. 4K is a top view of the preferred embodiment from FIG. 4L

FIG. 4L is a longer version of the preferred embodiment from FIG. 4E

FIG. 4M is an angled view of the preferred embodiment from FIG. 4L

FIG. 5A is a detailed view of the circular section labelled B

FIG. 5B is an angled view of the preferred embodiment from FIG. 5D

FIG. 5C is a cross-sectional view, labelled A-A, of FIG. 5D

FIG. 5D is a side view of a thin long handle with a thin vertical rectangular replaceable brush bristle head attached

FIG. 5E is a front view of the preferred embodiment from FIG. 5D

FIG. 5F is a front view of a thin long handle with a thin horizontal rectangular replaceable brush bristle head attached

FIG. 5G is a side view of the preferred embodiment from FIG. 5F

FIG. 5H is an angled view of the preferred embodiment from FIG. 5F

Detailed Description Of Embodiments

In the following detailed description, reference is made to the accompanying drawings, which are shown by way of illustration specific embodiments in which the invention may be practised. These embodiments are described in adequate detail to enable those proficient in the art to implement the invention, and it is to be understood that other embodiments may be made use of and that structural and logical changes may be made without departing from the spirit and scope of the invention. The following detailed description is therefore not to be taken in a limiting sense. Also, like numbers in the figures refer to like components, which should be apparent from the context of use. FIG. 1 is an arrangement of multiple views and two configurations of the preferred embodiment. Within FIG. 1 all the components are shown with the bristles 1 and adhesive 2, however, this is not shown in subsequent figures. The figures FIG.1 A, FIG. 1 B, FIG. 1 C and FIG. 1 D shows a configuration of which the handle 4 and replaceable brush bristle head 3 are assembled. The figures FIG. 1 E and FIG. 1 F shows a configuration of which the handle 4 and replaceable brush bristle head 3 is disassembled. FIG. 1 A illustrates the front view of the preferred embodiment while constructed and FIG. 1 B shows a side view of the preferred embodiment while constructed where the replaceable brush bristle head 3 is attached to the handle 4 which has a hole 5 that can be used to hang the brush. FIG. 1 B shows a cross- sectional view of the preferred embodiment where the bristles 1 is attached to the replaceable brush bristle head 3 via adhesive 2 around, but not on top of the rectangular integrated spacer 6. FIG. 1 C is a cross-sectional view of the preferred embodiment where the bristles 1 , adhesive 2, and rectangular integrated spacer 6 are shown from a different perspective. The figures FIG. 1 E and FIG. 1 F shows a disassembled configuration of the preferred embodiment where the replaceable brush bristle head 3 is ready to be slotted into the handle 4. The end-user will do this via slotting the shaft 28 into the elongate recess 29 and pushing until it clicks via a mechanism that is detailed and elaborated later in FIG. 2D. The end-user could also disassemble the preferred embodiment by simply pulling up on the replaceable brush bristle head 3 and the shaft 28 will slot out from the elongate recess 29.

FIG. 2 shows a myriad of combinations of handles and differently shaped replaceable brush bristle heads, shown without the bristles 1 or adhesive 2. FIG. 2A is an angled view of the preferred embodiment from FIG. 1 where the handle 4 and replaceable brush bristle head 3 are assembled. FIG. 2B is a top view of the preferred embodiment from FIG. 2A where you can clearly see the rectangular shape of the replaceable brush bristle head 3 and integrated spacer 6. FIG. 2C is a front view of the preferred embodiment from FIG. 2A. FIG. 2D is a detailed view of a cross-section of the mechanism referred to from FIG. 1 . It illustrates that within the elongate recess 29 are two identical indents 12 that are there to accommodate the mirroring extrusion 13 on the cantilever 30 on the shaft 28. This extrusion 13 is shaped to have a shallow angle at the bottom, such that it can easily slide into the elongate recess 29 and allow the cantilever 30 to deform inwards into the triangularly shaped cavern. The fact that the cantilever 30 can deform allows the extrusion 13 to become flush with the elongate recess 29 and allows the shaft 28 to slide down into the elongate recess 29 until the extrusion 13 snaps into one of the identical indents 12. Once snapped in place as shown in FIG. 2D the replaceable brush bristle head 3 will be secured onto the handle 4 such that the end-user will be able to paint. If the end-user decides to remove the replaceable brush bristle head 3 then as they pull upward on the replaceable brush bristle head 3 the top angle of the extrusion 13 is much steeper such that it will require significant and deliberate force to deform the cantilever 30 into the triangular cavern to make it flush with the elongate recess 29 and slide out. This is to ensure that the replaceable brush bristle head 3 does not come out accidentally and only when a deliberate force is applied. FIG. 2E is a side view of the preferred embodiment from FIG. 2A. FIG. 2F is a cross-sectional view of FIG. 2E where the integrated spacer 6 and mechanism can clearly be seen. FIG. 2G and FIG. 2H shows two views of a different configuration of the preferred embodiment where a thin handle 7 can be seen attached to the same replaceable brush bristle head 3. FIG. 2I, FIG. 2J and FIG. 2K all show differing views of a new configuration of the preferred embodiment where a thick handle 4 can be seen attached to the same triangular replaceable brush bristle head 8. The triangular integrated spacer 10 can also be seen in FIG. 2J in order to create a reservoir of paint within the bristles in order to aid in paint storage and delivery. FIG. 2L and FIG. 2M shows alternating views of a new configuration of the preferred embodiment where the thin handle 7 is attached to the triangular replaceable brush bristle head 8. FIG. 2N, FIG. 20 and FIG. 2P all show differing views of a new configuration of the preferred embodiment where a thick handle 4 can be seen attached to the same circular replaceable brush bristle head 9. The circular integrated spacer 11 can also be seen in FIG. 20 in order to create a reservoir of paint within the bristles in order to aid in paint storage and delivery. FIG. 2Q and FIG. 2R show alternating views of a new configuration of the preferred embodiment where the thin handle 7 is attached to the circular replaceable brush bristle head 9

The rectangular replaceable brush bristle head 3, triangular replaceable brush bristle head 8, and circular replaceable brush bristle head 9 shown in FIG. 1 and FIG. 2 are all intended to have a range of lengths and sizes, that are not shown in the drawings, from a minimum of, but not limited to, 1 inch and a maximum of, but not limited to, 5 inches. All the replaceable brush bristle heads shown in FIG. 1 and FIG. 2 are compatible and interchangeable with both thick handle 4 and thin handle 7.

Within FIG. 2 the rectangular replaceable brush bristle head 3, triangular replaceable brush bristle head 8, and circular replaceable brush bristle head 9, and their other sizes, are all cross-compatible and interchangeable between both thick handle 4 and thin handle 7. An example use case for this functionality is if the end-user is using the configuration from FIG. 2A to paint a wall with white paint, but now intends to paint the other wall with black paint, the user could simply push up on the rectangular replaceable brush bristle head 3 to release it from the handle 4 and then get a new rectangular replaceable brush bristle head 3 and slot and push this into the thick handle 4 such that it can now be used to paint on the wall in black paint. This means that the user has been able to change paint colour quickly and easily while only disposing of a replaceable brush bristle head that is biodegradable. This is unlike with traditional paintbrushes where in order to change paint colour an entirely new paintbrush would have to be used of or the use and waste of time and harmful chemicals like white spirit and paintbrush cleaner would have to be incurred in order to clean the same brush. However, this singular example use case is not intended to limit the various potential use cases for the preferred embodiment.

FIG. 3 is an arrangement of multiple views of extended handles with a cross elongate recess 20, shown without the bristles or adhesive. FIG. 3A shows a cross- sectional view of FIG. 3E where the cross elongate recess 20 can be seen. FIG. 3B is a detailed view of the circular section, labelled C, of FIG. 3D which shows from a top view of FIG. 3E where the profile of the cross elongate recess 20 can be seen. FIG. 3C is a detailed view of the circular section, labelled B, from FIG. 3A which shows a cross-sectional view of the cross elongate recess 20 where a shaft of a replaceable brush bristle head may be slotted into. FIG. 3D, FIG. 3E, FIG. 3F and FIG. 3H all show differing views of the preferred embodiment where a straight extended thick handle 14 and straight extended thin handle 15 can be seen. FIG. 3G shows a detailed view of the circular section, labelled D, of FIG. 3H where an angled perspective of the cross elongate recess 20 can be seen. FIG. 3I, FIG. 3J and FIG. 3L all show differing views of the preferred embodiment where an extended thick handle of 45 degrees 16 and an extended thin handle of 45 degrees 17 can be seen. FIG. 3K shows a detailed view of the circular section, labelled E, of FIG. 3L where another angled perspective of the cross elongate recess 20 can be seen. FIG. 3M, FIG. 3N and FIG. 3P all show differing views of the preferred embodiment where an extended thick handle of 90 degrees 18 and an extended thin handle of 90 degrees 19 can be seen. FIG. 30 shows a detailed view of the circular section, labelled F, of FIG. 3P where another angled perspective of the cross elongate recess 20 can be seen.

Within FIG. 3 the extended handles are shown to be straight, 45 degrees, and 90 degrees. However, this is not intended to limit the potential application which could implement the extended handles at any angle. An example use case for this extension and angle of the handle is that it allows the end-user to be able to paint further distances or hard to access areas like ceilings or behind and around objects. However, this singular example use case is not intended to limit the various potential use cases for the preferred embodiment.

Within FIG. 3 the cross elongate recess 20 is illustrated. Essentially it is two elongate recess' 29 at a 90-degree orientation to one another. This adds functionality that the replaceable brush bristle heads can be used at 4 different orientations at 90-degree separations to each other. A possible use-case for this functionality is being able to manoeuvre and fit the brush in and around hard to access and restricted areas, for example around chandeliers or behind wardrobes. However, this singular example use case is not intended to limit the various potential use cases for the preferred embodiment.

The rectangular replaceable brush bristle head 3, triangular replaceable brush bristle head 8, and circular replaceable brush bristle head 9, and their other sizes are all cross-compatible and interchangeable with the straight extended thick handle 14, straight extended thin handle 15, extended thick handle of 45 degrees 16, the extended thin handle of 45 degrees 17, extended thick handle of 90 degrees 18 and an extended thin handle of 90 degrees 19 illustrated within FIG. 3. An example use case of this functionality is that it allows the end-user to quickly and easily switch replaceable brush bristle heads when they want to change the type of paint being used or be able to quickly change the length, size, or shape of the replaceable brush bristle head to rapidly adapt to a new painting surface or object. However, this example use case is not intended to limit the various potential use cases for the preferred embodiment.

FIG. 4 shows combinations of handles and differently shaped replaceable brush bristle heads, shown without the bristles or adhesive. FIG. 4A shows a cross- sectional view of the preferred embodiment from FIG. 4C where the cylindrically shaped handle 21 and circular replaceable brush bristle head 24 is assembled. FIG. 4B is a top view of the preferred embodiment from FIG. 4C where you can clearly see the circular shape of the circular replaceable brush bristle head 24. FIG. 4C shows a front view of the preferred embodiment where the circular replaceable brush bristle head 24 is attached to the cylindrically shaped handle 21 . FIG. 4D shows a top view of the preferred embodiment from FIG. 4E where the rectangular shape of the rectangular replaceable brush bristle head 23 is clearly illustrated. FIG. 4E shows a front view of the preferred embodiment where the rectangular replaceable brush bristle head 23 is attached to the cylindrically shaped handle 21 . FIG. 4F shows a detailed view of the circular section labelled D of FIG. 4B. FIG. 4G shows a detailed view of the circular section labelled C of FIG. 4D. FIG. 4H shows a detailed view of the circular section labelled B of FIG. 4A. It illustrates a version of the mechanism that is shown in FIG. 2D, where the shape of the shaft 28 and matching elongate recess 29 has been altered to be accommodated within the smaller diameter of the cylindrically shaped handle 21 . However, the mechanism that is shown in FIG. 4H works in the same way as that shown in FIG. 2D. FIG. 4I is a top view of the preferred embodiment from FIG. 4J where you can clearly see the circular shape of the circular replaceable brush bristle head 24. FIG. 4J shows a front view of the preferred embodiment where the circular replaceable brush bristle head 24 is attached to the extended cylindrically shaped handle 22. FIG. 4K shows a top view of the preferred embodiment from FIG. 4L where the rectangular shape of the rectangular replaceable brush bristle head 23 is clearly illustrated. FIG. 4L shows a front view and FIG. 4M shows an angled view of the preferred embodiment where the rectangular replaceable brush bristle head 23 is attached to the extended cylindrically shaped handle 22.

The rectangular replaceable brush bristle head 23 and circular replaceable brush bristle head 24 shown in FIG. 4 are all intended to have a range of length and sizes, that are not shown in the drawings, from a minimum of, but not limited to, 4mm and a maximum of, but not limited to, 16mm.

Within FIG. 4 the rectangular replaceable brush bristle head 23 and circular replaceable brush bristle head 24, and their other sizes, are all cross-compatible and interchangeable between both cylindrically shaped handle 21 and extended cylindrically shaped handle 22. An example use case for this functionality is the enduser using the configuration from FIG. 4C to paint art with a colour of paint, but now intends to paint with another colour. The user could simply pull up on the circular replaceable brush bristle head 24 to release it from the cylindrically shaped handle 21 and then get a new circular replaceable brush bristle head 24 and slot and push this into the cylindrically shaped handle 21 such that it can now be used to paint with a new colour. This means that the user has been able to change paint colour quickly and easily while only disposing of a replaceable brush bristle head that is biodegradable. This is unlike with traditional paintbrushes where in order to change paint colour an entirely new paintbrush would have to be used of or the use and waste of time and harmful chemicals like white spirit and paintbrush cleaner would have to be incurred in order to clean the same brush. Another example use case for this functionality is the end-user using the configuration from FIG. 4C to paint art with the circular replaceable brush bristle head 24 for outlining and then intends to paint with another brush shape for shading, for example, the rectangular replaceable brush bristle head 23. With our invention, the user can simply and quickly change the replaceable brush bristle heads. However, with a traditional paintbrush, the user would have to use an entirely new paintbrush or waste time and harmful chemicals like white spirit and paintbrush cleaner in order to clean the same brush. However, these example use cases are not intended to limit the various potential use cases for the preferred embodiment. FIG. 5 shows combinations of handles and differently shaped replaceable brush bristle heads, shown without the bristles or adhesive. FIG. 5A shows a detailed view of the circular section labelled B of FIG. 5C. It illustrates a version of the mechanism that is shown in FIG. 2D. However, the mechanism that is shown in FIG. 5A works in the same way as that shown in FIG. 2D. FIG. 5E shows a front view, FIG. 5D shows a side view and FIG. 5B shows an angled view of the preferred embodiment where the vertical replaceable brush bristle head 26 is attached to the thin extended handle 25. FIG. 5C is a cross-sectional view of FIG. 5D where the integrated spacer 6 and the mechanism can be seen clearly. FIG. 5F shows a front view, FIG. 5G shows a side view and FIG. 5H shows an angled view of the preferred embodiment where the horizontal replaceable brush bristle head 27 is attached to the thin extended handle 25. From FIG. 5D and FIG. 5G which are both side views, you can see the extremely thin profile of the preferred embodiment which is very useful for the example use case of painting behind radiators and other restricted areas. However, this singular example use case is not intended to limit the various potential use cases for the preferred embodiment.

The vertical replaceable brush bristle head 26 and horizontal replaceable brush bristle head 27 shown in FIG. 5 are all intended to have a range of lengths and sizes, that are not shown in the drawings, from a minimum of, but not limited to, 50.8mm and a maximum of, but not limited to, 76.2mm.

Within FIG. 5 the vertical replaceable brush bristle head 26 and horizontal replaceable brush bristle head 27, and their other sizes, are all cross-compatible and interchangeable with the thin extended handle 25. An example use case for this functionality is the end-user using the configuration from FIG. 5F to paint behind a radiator, but now intends to paint behind another radiator with another paint colour. The user could simply pull up on the horizontal replaceable brush bristle head 27 to release it from the thin extended handle 25 and then get a new horizontal replaceable brush bristle head 27 and slot and push this into the thin extended handle 25 such that it can now be used to paint with a new colour. This means that the user has been able to change paint colour quickly and easily while only disposing of a replaceable brush bristle head that is biodegradable. This is unlike with traditional paintbrushes where in order to change paint colour an entirely new paintbrush would have to be used of or the use and waste of time and harmful chemicals like white spirit and paintbrush cleaner would have to be incurred in order to clean the same brush. However, this singular example use case is not intended to limit the various potential use cases for the preferred embodiment.

All handles and replaceable brush bristle heads are depicted in the drawings as having specific lengths, shapes, and sizes. However, when implemented the handles and replaceable brush bristle heads may be of differing lengths, shapes, and sizes as the drawings are there for explanatory reasons and not intended to limit the scope of the invention.

All the shafts 28 and matching elongate recess' 29 are illustrated in the drawings as having specific lengths, shapes, and sizes. However, when implemented the shafts 28 and matching elongate recess' 29 may be of differing lengths, shapes, and sizes as the drawings are there for explanatory reasons and not intended to limit the scope of the invention. The mechanism is illustrated in FIG. 2D and elsewhere show that there is only one cantilever 30 and one extrusion 13 within the shaft 28. However, when implemented more cantilevers 30 and extrusions 13 may be added on the opposing side of the shaft 28 or lower on the shaft 28. Therefore, more mirroring identical indents 12 can also be added within the elongate recess 29 to match the added cantilevers 30 and extrusions 13. This could be done to increase the amount of force required to release the replaceable brush bristle head from the handle.

Although the intended material for the implementation of the preferred embodiment is a biodegradable plastic, a biodegradable adhesive and biodegradable bristles, any other materials may be used for example wood, glass or metal. However, these example materials are not intended to limit the various potential materials that could be used for the implementation of the preferred embodiment.

Claims

A paintbrush set comprising of the following separate and distinct components: a range of handles, intended to be used as a permanent tool, a range of interchangeable replaceable brush bristle heads each adapted to be coupled to a handle,

The range of handles and range of interchangeable replaceable brush bristle heads may be of varying lengths, shapes, and sizes. A paintbrush set of claim 1 wherein a mechanism is used in order to allow the user to attach and detach the range of interchangeable replaceable brush bristle heads to the coupling handle. This mechanism will function by: the user being able to attach an interchangeable replaceable brush bristle head by slotting the shaft into the matching elongate recess of the coupling handle and pushing it into the coupling handle. The user will also be able to detach an interchangeable replaceable brush bristle head by pulling up, with deliberate force, upon the interchangeable replaceable brush bristle head and sliding the shaft out of the matching elongate recess of the coupling handle. the interchangeable replaceable brush bristle heads having a shaft, on which there are one or more cantilevers with extrusions that are able to flex and deform such that it can snap into and out of place of the one or more of the matching accommodating indents within the elongate recess on the handle. This will allow the interchangeable replaceable brush bristle head to be held in place and only be removed when deliberate force is applied by the user. A paintbrush set of claim 1 wherein there is an integrated spacer within the interchangeable replaceable brush bristle heads such that when the bristles are saturated with paint the integrated spacer creates a reservoir of paint within the bristles in order to aid in paint storage and delivery. Additionally, the integrated spacer allows the interchangeable replaceable brush bristle heads to be of singular construction whereby the bristles need to be attached to interchangeable replaceable brush bristle heads via only an adhesive.