Hammer

WO2026218067A1PCT designated stage Publication Date: 2026-10-22NETO CLODOALDO RODRIGUES DE OLIVEIRA
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Patent Information

Application Number
PCT/BR2026/050026
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2025-05-26
Filing Date
2026-01-25
Publication Date
2026-10-22

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Abstract

The present invention relates to a new type of hammer, in which at least one of the faces of its head is arranged as a brush (1) and (2), fitted with firm but flexible bristles made of synthetic polymers and / or natural fibres treated with waterproofing agents, which enables its use as a hammer for unclogging the holes of shower and showerhead spreaders, and the holes of other objects, as well as its use as a hammer for piercing meat and other foodstuffs. In a constructive variation, the faces are separate parts that can be fitted to and detached from the head, are interchangeable with one another and, in combination with the head and the hammer handle, form a kit. The present invention also relates to a method for unclogging the holes of shower and showerhead spreaders.
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Description

[0001] HAMMER

[0002] Field of invention

[0003] The present invention relates broadly to hand tools. More specifically to a new type of hammer.

[0004] Fundamentals of the invention

[0005] A hammer is a hand tool designed to apply force. Its main function is to transfer energy to an object by striking, breaking, or shaping materials. Its uses are varied, ranging from law to medicine, from carpentry to heavy industry, from sculpture to tire repair, and from sports to cultural events. Depending on its intended use, it comes in numerous sizes, shapes, and materials, all sharing the common characteristic of a handle to which a head is attached. The shape of the head varies depending on the application, and it may have one or more faces.

[0006] The present invention presents a new type of hammer, whose technical characteristics of its head enable, among other applications, its use in solving technical problems that are solved in the state of the art by other more expensive means, including the problem of clogged showers and showerheads.

[0007] A shower with clogged or crooked water outlets is irritating to anyone during a shower. The showerhead nozzles become clogged due to the accumulation of limescale, sludge, and other dirt carried by the water itself. Therefore, with greater or lesser frequency, depending on the water quality, the nozzle nozzles need to be cleaned to unclog these water outlets. Self-cleaning showerheads are known, but they are expensive. The internet is full of home remedies for clogged showerheads, such as submerging the nozzle in vinegar, or using pointed objects – needles, toothpicks, nails – to unclog each nozzle. More recently, spiral brushes used in dentistry are being marketed for this purpose.

[0008] It has been proven, through daily practice in kitchens, that friction and light tapping with tufts of firm, flexible bristles from household cleaning brushes are relatively effective in unclogging small holes, such as those in household sieve screens, kitchen juicer screens, and steamer grate screens. And now it has been proven that light, quick tapping with tufts of firm, flexible bristles from brushes is also effective in unclogging shower and showerhead screens.

[0009] Brief description of the drawings

[0010] Figure 1, which is absolutely not limiting, is merely illustrative of an example of an embodiment of the hammer that is the subject of the present invention.

[0011] Description of the invention

[0012] Given this, the hammer object of the present invention was developed, in which at least one of the faces of its head is configured as a brush (1), implanted with firm, yet flexible bristles, of synthetic polymers, such as nylon (polyamide), polyester, polypropylene, polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate, and / or of natural fibers, such as coconut fibers, tampico fibers, sisal fibers, horsehair fibers and boar hair fibers, preferably treated with waterproofing agents, with straight-cut tips, with thicknesses dimensioned so as to allow them to pass through the sieves of a showerhead and showerhead and also sieves of other objects, inserted and anchored, in open tufts (inverted cone geometry), in holes distributed uniformly spaced on the surface of at least one of the faces, which may be flat or slightly convex.

[0013] Thus, by using the hammer that is the subject of the present invention to apply light and quick taps of the tufts of bristles on the face of its head onto the showerhead and showerhead filters, there will always be some bristle that randomly hits the clogged holes, quickly unclogging them, without the need for the time-consuming direct action on each clogged hole, as is currently done in the state of the art, using needles, toothpicks, nails and spiral brushes. Since the bristles are firm but flexible, those that do not hit the holes, colliding with the rigid surface of the showerhead in the spaces between the holes, are flexed, allowing those bristles that randomly hit the holes, including the clogged ones, not to be flexed, and thus pass through the unclogged holes, and break up the dirt from those that are clogged, unblocking them.

[0014] Considering that the showerhead in showers is positioned horizontally, while the showerhead in showers is positioned at an acute angle, ergonomics required the development of two versions of the hammer face that is the subject of the present invention: one for use in showers, with a face parallel to the handle, and another for use in showers, with a face inclined in relation to the handle, forming an acute angle with it, preferably less than 45°. A third version was also developed, as an alternative to the two previous versions, with a face incorporating an adjustable articulation with the hammer head, a mechanism widely known in the art, allowing angular adjustment of the face in relation to the handle.

[0015] The hammer that is the subject of the present invention can also be used to unclog the sieves of other objects, such as sieve sieves, kitchen juicers, and steamer racks, advantageously replacing the household cleaning brushes currently used for this task, by optimizing the application of light and quick taps.

[0016] Alternatively, instead of tufts of bristles, the hammer object of the present invention has at least one face of its head configured as a brush (2), implanted with individual bristles of synthetic polymers, such as nylon (polyamide), polyester, polypropylene, polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate, with obliquely cut tips, of significantly greater thickness than the bristles of the tufts, therefore firmer and less flexible, inserted and anchored one by one, in holes evenly spaced on the surface of at least one of the faces, which allows its use as a hammer to pierce meats and other foods. A constructive variation of the hammer object of the present invention comprises a hammer whose faces of its head are separate, attachable and detachable pieces from its head, being interchangeable with each other, and forming a kit together with the head and handle of the hammer.Its main objective is the optimization of natural resources, since the hammer that is the subject of this invention does not experience even wear throughout its structure (handle, head and its faces) during its use, with most of its structure (handle and head) remaining in perfect condition for use after the wear of the consumable parts (the faces of the head).

[0017] The interchangeable faces are fitted and secured to the hammer head by means of fitting and securing widely known in the art, such as a sliding flange fitting in a milled groove (pressure or locking), a bayonet fitting, and a click-type fitting with pressure locking.

[0018] Thus, the user of the hammer object of the present invention can interchange the hammer faces according to their usage needs, in addition to being able to replace worn faces with new ones, without the need to replace the entire hammer after the faces of its head wear out, contributing to the rational use of natural resources. Furthermore, continuing to use the same hammer handle / head assembly after changing the faces of its head is economically advantageous, especially when a more expensive material is used in the manufacture of the hammer handle / head assembly.

[0019] The present invention also relates to a method for unclogging showerhead and shower spray patterns, comprising, in a first step, passing water through the patterns for a few seconds to soften the residue that is clogging the patterns; in a second step, using the hammer object of the present invention, applying light and quick taps of the tufts of bristles of the face configured as the brush (1) defined in claim 4 on all the patterns; in a third step, passing water through the patterns again to check if any are still clogged; repeating the previous steps, if necessary, until all the patterns are completely unclogged.

[0020] Example of embodiment of the invention: An example of an embodiment of the hammer object of the present invention, absolutely not limiting, implemented only for demonstration of its effectiveness, constitutes a hammer with a solid polypropylene structure, with a cylindrical head 70 mm high, with two circular faces 40 mm in diameter, parallel to a handle 185 mm long, one of the faces, slightly convex, configured as a brush (1), implanted with firm and flexible nylon (polyamide) bristles, with straight-cut tips, 0.5 mm thick and 15 mm high (free), grouped in open tufts (inverted cone geometry) with 30 bristles, inserted and anchored in uniformly spaced holes (« 1.5 holes / cm « 2) on the surface of this face, for the purpose of breaking up dirt from clogged showerhead and showerhead strainers, and from clogged strainers of other objects. The other face of the head is flat, configured as a brush (2), implanted with individual polyethylene terephthalate bristles, with obliquely cut tips, 1.0 mm thick, and 15 mm high (free), firm and not very flexible, inserted and anchored one by one, in uniformly spaced holes (« 2.4 holes / cm 2 ) on the surface of that face, for the purpose of piercing meats and other foods.

Claims

CLAIMS 1. HAMMER, a hand tool designed to apply force, used to strike, break or shape objects, consisting of a head with one or more faces, fixed to a handle with a grip for the user's hand, characterized in that at least one of the faces of its head is configured as a brush (1) and (2), implanted with firm and flexible bristles of synthetic polymers and / or firm and flexible bristles of natural fibers.

2. HAMMER, according to claim 1, characterized in that the synthetic polymers are preferably chosen from nylon (polyamide), polyester, polypropylene, polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate.

3. HAMMER, according to claim 1, characterized in that the natural fibers are preferably chosen from coconut fibers, tampico fibers, sisal fibers, horsehair fibers and boar bristle fibers, preferably treated with waterproofing agents.

4. HAMMER, according to claims 1, 2 and 3, characterized in that at least one of its faces configured as a brush (1) is implanted with open tufts (inverted cone geometry) of bristles with straight-cut trimmed tips, inserted and anchored in holes evenly spaced on the surface of that face.

5. HAMMER, according to claims 1 and 2, characterized in that at least one of its faces configured as a brush (2) is implanted with individual bristles with obliquely trimmed tips, inserted and anchored in uniformly spaced holes distributed on the surface of that face.

6. HAMMER, according to claims 1, 2, 3, 4 and 5, characterized in that at least one of its faces is slightly convex.

7. HAMMER, according to claims 1, 2, 3, 4 and 5, characterized in that at least one of its faces is flat.

8. HAMMER, according to claims 1, 2, 3, 4, 5, 6 and 7, characterized in that at least one of its faces is parallel to the handle.

9. HAMMER, according to claims 1, 2, 3, 4, 6 and 7, characterized in that at least one of its faces is inclined relative to the handle, forming an acute angle with it, preferably less than 45°.

10. HAMMER, according to claims 1, 2, 3, 4, 6 and 7, characterized in that at least one of its faces incorporates an adjustable joint with its head, for angular adjustment of the face in relation to the handle.

11. HAMMER, according to claims 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, characterized in that the faces of its head are separate, interlocking and detachable pieces from its head, being interchangeable with each other, and forming a kit together with the head and handle of the hammer.

12. METHOD FOR UNBLOCKING SCREEN TRAYS, for unblocking shower and showerhead screen sieves, characterized by comprising the following steps: in a first step, running water through the screens for a few seconds to soften the residues that are blocking the screens; in a second step, using the hammer object of the present invention, applying light and quick taps of the tufts of bristles of the face configured as the brush (1) defined in claim 4 on all the screens; in a third step, running water through the screens again to check if any are still blocked; repeating the previous steps, if necessary, until all the screens are completely unblocked.