WO2012071636A1 - Cutting element for brushcutters of the type with a flexible shaft with handles - Google Patents
Cutting element for brushcutters of the type with a flexible shaft with handles Download PDFInfo
- Publication number
- WO2012071636A1 WO2012071636A1 PCT/BR2011/000435 BR2011000435W WO2012071636A1 WO 2012071636 A1 WO2012071636 A1 WO 2012071636A1 BR 2011000435 W BR2011000435 W BR 2011000435W WO 2012071636 A1 WO2012071636 A1 WO 2012071636A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cutting element
- extensions
- hub
- brushcutter
- cutting
- Prior art date
Links
- 0 C1*2C1CCC2 Chemical compound C1*2C1CCC2 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/416—Flexible line cutters
- A01D34/4166—Mounting or replacement of the lines
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
- A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
- A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
- A01D34/73—Cutting apparatus
Definitions
- This report refers to a brushcutter for use in cutting grasses and the like.
- spinning spools have been created, which release in length an amount of coiled wire as they wear.
- Mechanisms that release more wires when the machine is stopped must require some user action to move an internal lock and allow the ends of the wires to be pulled out.
- the cutting wire has resistance determined by the composition of the plastic and the wire gauge. As the yarn is obtained by extrusion process, it is very difficult to incorporate tensile strength or harder components as obtained by other processes. Thus, the behavior of the yarn is constant until the material accumulated in the spool is consumed, even when cutting more resistant plants.
- Another object of the present invention is to provide a brushcutter that eliminates the use of spool.
- Another object of the present invention is to provide a mower cutting element that uses plant-friendly cutting elements, with quick change if necessary.
- Another object of the present invention is to provide a brushcutter cutting element that allows the provision of cutting elements with a cross section more suitable for cutting in the direction of rotation.
- Another objective of the present invention is to provide a brushcutter cutting element that allows the cutting elements to be added to the aerodynamic projections to enhance their stability.
- Another object of the present invention is to provide a brushcutter that allows the use of color cutters that indicate their suitability for plant types by identifying the aggregate materials in the plastic composition.
- Another object of the present invention is to provide a brushcutter cutting element which enables engraving of the cutting element material type for recycling purposes.
- a brushcutter which is comprised of at least two equally spaced radial extensions, starting from a cylindrical hub provided with a central hole with notches for the brushcutter shaft ; whereas the cross-section of each extension may present an oval shape with small wings, the function of which is to take advantage of the passage through the air to prevent the extension being disoriented by the impact on the cut of the plants; wherein said element may be designed in different types of materials such as fiberglass, carbon fiber, glass microspheres, metal microspheres and others; the extension assembly next to the cylindrical hub is by quick fitting
- Figure 1 represents in perspective a conventional electric brushcutter
- Figure 2 is a plan view of a conventional spool
- Figure 3 is a plan view of the cutting element according to the present invention and in the version with two opposite radial extensions;
- Fig. 4 is a plan view of the cutting element according to the present invention and in the version with three radially offset radii;
- Fig. 5 is a plan view of the cutting element according to the present invention and in the version with four radially offset radii;
- Figure 6 is a plan view of a two extension element with stabilizing blades.
- FIG. 7 is a cross-sectional view of a cutting or extending element object of the present invention. According to these illustrations the brushcutter cutting element, object of the present invention, is carried out on a brushcutter of the type illustrated in figures 3 to 7, to be described below.
- this conventional brush cutter is essentially made up of a vertical axis electric or gasoline engine 1 in whose At its lower end, a spool 2 is attached with two exit holes 3 of the two plastic wires 4.
- Motor 1 is attached to a long, upwardly displaced rod 5 having at its end a handle 6 with a trigger 7 which drives the electric switch of the electric motor or the throttle of a gasoline engine.
- the reel 2 of the conventional brushcutter consists of the reel 8 in which the wires 4 are wound, with a wrapping cap 9 where the wire exit holes 3 are.
- the spool has teeth or holes forming a ratchet, which prevents the spool from rotating relative to cap 9 unless the teeth 10 of that ratchet are engaged to release movement.
- the brushcutter shown in Figures 3 to 7 comprises at least two equally spaced radial extensions 11, starting from a cylindrical hub 12 provided with a central bore 13 with recess. notches of the brushcutter shaft.
- Figure 3 illustrates a version of two 180 ° offset extensions 11; while figure 4 illustrates a three-length version 11 120 ° offset and Figure 5 illustrates a version of four 90 ° offset extensions 11 between them.
- the hub 12 is basically cylindrical and the extensions 11 are of variable cross-section decreasing from the hub.
- each extension 11 as shown in Figure 7 may be oval in shape, to reduce aerodynamic strength while increasing shear power.
- the extensions 11 may also have or incorporate stabilizing blades 14 (see figures 6 and
- the plastic in this constructional form is injection molded and is loaded with materials that increase the strength of the cutting element.
- the new cutting element For insertion into the brushcutter, the new cutting element is simply pressed against the motor shaft by snapping into place. So with a simple pull and it can be removed from the hub to be replaced. Therefore, the action of element exchange is very fast, which also does not require any specific mechanism knowledge.
- Hub 12 may indicate, with relief label 15, the type of material employed for recycling purposes.
- the brushcutter user will be able to bring with them various cutting elements to be mounted on the machine, suitable for the different types of plants they encounter.
- Hub 12 admits a cover with output cutouts for extensions i and fixed to the motor shaft.
- the machine will have a substantial reduction in cost and consumer price because it no longer uses spool with its mechanisms. The chances of malfunction will be greatly reduced, as the most fragile part of a conventional brushcutter is the spool, eliminated in the proposed solution.
- the hub 12 of the cutting element may be mounted without pressure to the motor shaft notches 1, where it is held by a small cap that engages the shaft.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Harvester Elements (AREA)
Abstract
The cutting element for brushcutters of the type with a flexible shaft with handles is technology belonging to the field of invention of grass-cutting machines, the objective being that the cutting element can be changed rapidly in accordance with the type of plant encountered. The blades have a preferably oval shape, with an incorporated blade, said shafts being constituted from plastics-based composite material. The shafts can be coupled rapidly to the rotary cylinder, and are connected to form an angle of 90 or 120 degrees with one another on the cylinder, which has a lower opening that can be closed.
Description
"ELEMENTO DE CORTE PARA ROÇADEIRAS". "CUTTING ELEMENT FOR MOWERS".
Refere-se o presente relatório a um elemento de corte para roçadeiras a ser utilizado no corte de gramas e similares. This report refers to a brushcutter for use in cutting grasses and the like.
Como é de conhecimento dos técnicos no assunto, as roçadeiras convencionais são máquinas para jardinagem, acionadas por motor elétrico ou a gasolina, destinadas ao corte de grama, mato, pequenos galhos, usando como elemento cortador um ou mais fios de material plástico resistente, girando em alta rotação e presos a um carretel do eixo giratório. É sabido que durante o trabalho de corte ocorre um desgaste desses fios de plástico, desgaste esse que é agravado, principalmente, quando esses fios atingem materiais duros entremeados nas folhagens. As those skilled in the art are aware, conventional brushcutters are electric or gasoline powered gardeners for mowing grass, weeds, twigs, using one or more strands of sturdy plastic material, rotating as a cutting element. at high rotation and attached to a rotary shaft spool. It is known that during the cutting work these plastic wires wear, which is aggravated, especially when these wires reach hard materials interspersed in the foliage.
Para contornar esse desgaste que chega a quebra desses fios, foram criados carretéis giratórios, que liberam em comprimento uma quantidade de fio bobinado à medida que se verifica o desgaste dos mesmos. To circumvent this wear that comes to break these wires, spinning spools have been created, which release in length an amount of coiled wire as they wear.
Esses carretéis assim criados podem liberar mais fios com mecanismos que atuam com a máquina girando, ou ainda com a máquina parada. É evidente que o mecanismo de atuação com a máquina girando é mais complicado e frágil, pois atua por meio inercial, com uma brusca mudança de velocidade de giro do carretel. These spools thus created can release more wires with mechanisms that act with the spinning machine, or even with the machine stopped. It is evident that the mechanism of actuation with the spinning machine is more complicated and fragile, because it acts by inertial, with a sudden change of speed of rotation of the spool.
Já os mecanismos que liberam mais fios com a máquina parada, devem exigir alguma ação do usuário, para movimentar uma trava interna e permitir que se puxe para fora as pontas dos fios. Mechanisms that release more wires when the machine is stopped must require some user action to move an internal lock and allow the ends of the wires to be pulled out.
Dessa forma, usando um carretel interno e
giratório, as roçadeiras são muito práticas, mas quando o carretel se esgota, a operação de recarregá-lo com fio é um desafio à paciência, pois exige do operador a desmontagem do carretel, ou apresenta uma complexa construtividade, quando o carretel é do tipo que permite operações de recarga de fio sem desmontagem. That way, using an internal spool and The rotary cutters are very practical, but when the reel runs out, recharging it with wire is a challenge to patience as it requires the operator to disassemble the reel, or presents a complex constructiveness when the reel is of the reel type. which allows wire recharge operations without disassembly.
É sabido ainda que o fio de corte tem resistência determinada pela composição do plástico e pela bitola do fio. Como o fio é obtido por processo de extrusão, é muito difícil incorporar nele componentes resistentes à tração, ou mais duros, como se obtém por outros processos. Assim, o comportamento do fio é constante até o consumo do material acumulado no carretel, mesmo quando se deseja cortar plantas mais resistentes. It is also known that the cutting wire has resistance determined by the composition of the plastic and the wire gauge. As the yarn is obtained by extrusion process, it is very difficult to incorporate tensile strength or harder components as obtained by other processes. Thus, the behavior of the yarn is constant until the material accumulated in the spool is consumed, even when cutting more resistant plants.
É um dos objetivos da presente invenção prover um elemento de corte para roçadeiras que permita uma troca muito rápida desse elemento de corte sem necessidade de entender do mecanismo em si. It is an object of the present invention to provide a brushcutter cutting element that allows a very quick change of this cutting element without having to understand the mechanism itself.
Outro objetivo da presente invenção é prover um elemento de corte para roçadeiras que elimine o uso de carretel . Another object of the present invention is to provide a brushcutter that eliminates the use of spool.
Outro objetivo da presente invenção é prover um elemento de corte para roçadeiras que use elementos de corte adequados às plantas, com troca rápida se necessário. Another object of the present invention is to provide a mower cutting element that uses plant-friendly cutting elements, with quick change if necessary.
Outro objetivo da presente invenção é prover um elemento de corte para roçadeiras que permita a existência de um reforço dos elementos de corte com materiais que confiram maior resistência à tração e maior resistência a desgaste.
Outro objetivo da presente invenção é prover um elemento de corte para roçadeiras que permita a provisão de elementos de corte com secção transversal variável, proporcional à resistência necessária em cada ponto, a cada distância do centro de giro. Another object of the present invention is to provide a brushcutter cutting element that allows the cutting elements to be reinforced with materials that impart greater tensile strength and increased wear resistance. Another object of the present invention is to provide a brushcutter which allows the provision of cutting elements with variable cross-section, proportional to the strength required at each point, at each distance from the turning center.
Outro objetivo da presente invenção é prover um elemento de corte para roçadeiras que permita a provisão de elementos de corte com secção transversal mais adequada ao corte no sentido de rotação. Another object of the present invention is to provide a brushcutter cutting element that allows the provision of cutting elements with a cross section more suitable for cutting in the direction of rotation.
Outro objetivo da presente invenção é prover um elemento de corte para roçadeiras que permita agregar aos elementos de corte saliências aerodinâmicas para favorecer sua estabilidade. Another objective of the present invention is to provide a brushcutter cutting element that allows the cutting elements to be added to the aerodynamic projections to enhance their stability.
Outro objetivo da presente invenção é prover um elemento de corte para roçadeiras que permita o uso de elementos de corte em cores que indicam sua adequação aos tipos de planta, identificando os materiais agregados na composição do plástico. Another object of the present invention is to provide a brushcutter that allows the use of color cutters that indicate their suitability for plant types by identifying the aggregate materials in the plastic composition.
Outro objetivo da presente invenção é prover um elemento de corte para roçadeiras que possibilite a gravação do tipo do material do elemento de corte para efeito de reciclagem. Another object of the present invention is to provide a brushcutter cutting element which enables engraving of the cutting element material type for recycling purposes.
Esses e outros objetivos e vantagens da presente invenção são alcançados com um elemento de corte para roçadeiras que seja compreendido por pelo menos dois prolongamentos radiais igualmente espaçados entre si, partindo de um cubo cilíndrico provido de um furo central com encaixes para entalhes do eixo da roçadeira; sendo que a secção transversal de cada prolongamento, pode apresentar
uma forma ovalada, que comporta pequenas asas, cuja função é a de aproveitar a passagem através do ar para impedir que o prolongamento fique desorientado pelo impacto no corte das plantas; sendo que dito elemento pode ser concebido em diferentes tipos de materiais como fibra de vidro, fibra de carbono, micro esferas de vidro, micro esferas de metal e outros; sendo que a montagem do prolongamento junto ao cubo cilíndrico se dá por encaixe rápido These and other objects and advantages of the present invention are achieved with a brushcutter which is comprised of at least two equally spaced radial extensions, starting from a cylindrical hub provided with a central hole with notches for the brushcutter shaft ; whereas the cross-section of each extension may present an oval shape with small wings, the function of which is to take advantage of the passage through the air to prevent the extension being disoriented by the impact on the cut of the plants; wherein said element may be designed in different types of materials such as fiberglass, carbon fiber, glass microspheres, metal microspheres and others; the extension assembly next to the cylindrical hub is by quick fitting
Segue a descrição do presente invento que pode ser acompanhada pelos desenhos, nos quais: Following is the description of the present invention which may be accompanied by the drawings in which:
A figura 1 representa em perspectiva uma roçadeira elétrica convencional; Figure 1 represents in perspective a conventional electric brushcutter;
A figura 2 representa, em vista de planta, um carretel convencional; Figure 2 is a plan view of a conventional spool;
A figura 3 representa, em vista de planta, o elemento de corte, de acordo com a presente invenção e na versão com dois prolongamentos radiais opostos; Figure 3 is a plan view of the cutting element according to the present invention and in the version with two opposite radial extensions;
A figura 4 representa em vista de planta, o elemento de corte, de acordo com a presente invenção e na versão com três prolongamentos radiais defasados entre si; Fig. 4 is a plan view of the cutting element according to the present invention and in the version with three radially offset radii;
A figura 5 representa, em vista de planta, o elemento de corte, de acordo com a presente invenção e na versão com quatro prolongamentos radiais defasados entre si; Fig. 5 is a plan view of the cutting element according to the present invention and in the version with four radially offset radii;
A figura 6 representa, em vista de planta, um elemento de dois prolongamentos, com lâminas de estabilização; e Figure 6 is a plan view of a two extension element with stabilizing blades; and
A figura 7 é um corte transversal de um elemento de corte ou prolongamento objeto da presente invenção .
De acordo com essas ilustrações o elemento de corte para roçadeiras, objeto da presente invenção, é levado a efeito em uma roçadeira do tipo ilustrada nas figuras de 3 a 7, a serem descritas mais adiante. Figure 7 is a cross-sectional view of a cutting or extending element object of the present invention. According to these illustrations the brushcutter cutting element, object of the present invention, is carried out on a brushcutter of the type illustrated in figures 3 to 7, to be described below.
Para o entendimento da presente invenção se faz necessária a apresentação gráfica e uma descrição sucinta de uma roçadeira convencional, como apresentada na figura 1. Assim, essa roçadeira convencional é constituída essencialmente por um motor 1 elétrico ou a gasolina, com eixo vertical, em cuja extremidade inferior se fixa um carretel 2, com dois orifícios 3 de saída dos dois fios 4 de plástico. Ao motor 1 se prende uma haste 5 longa, deslocada em ângulo para cima, tendo na extremidade um manipulo 6 com um gatilho 7, o qual aciona a chave elétrica do motor elétrico ou o acelerador de um motor a gasolina. O carretel 2 da roçadeira convencional consiste no carretel 8 em que os fios 4 estão bobinados, com uma capa 9 envolvente onde estão os orifícios 3 de saída dos fios. Normalmente o carretel possui dentes ou furos formando uma catraca, que impede o giro do carretel em relação à capa 9 a menos que se acionem os dentes 10 dessa catraca para liberar o movimento. For the understanding of the present invention a graphical presentation and a brief description of a conventional brush cutter are required as shown in Figure 1. Thus, this conventional brush cutter is essentially made up of a vertical axis electric or gasoline engine 1 in whose At its lower end, a spool 2 is attached with two exit holes 3 of the two plastic wires 4. Motor 1 is attached to a long, upwardly displaced rod 5 having at its end a handle 6 with a trigger 7 which drives the electric switch of the electric motor or the throttle of a gasoline engine. The reel 2 of the conventional brushcutter consists of the reel 8 in which the wires 4 are wound, with a wrapping cap 9 where the wire exit holes 3 are. Normally the spool has teeth or holes forming a ratchet, which prevents the spool from rotating relative to cap 9 unless the teeth 10 of that ratchet are engaged to release movement.
De acordo com a presente invenção, o elemento de corte para roçadeiras, representado nas figuras 3 até 7, compreende, pelo menos, dois prolongamentos radiais 11 igualmente espaçados entre si, partindo de um cubo cilíndrico 12 provido de um furo central 13 com encaixes para entalhes do eixo da roçadeira. A figura 3 ilustra uma versão de dois prolongamentos 11 defasados de 180°; enquanto a figura 4 ilustra uma versão de três prolongamentos 11
defasados de 120° e a figura 5 ilustra uma versão de quatro prolongamentos 11 defasados de 90° entre si. In accordance with the present invention, the brushcutter shown in Figures 3 to 7 comprises at least two equally spaced radial extensions 11, starting from a cylindrical hub 12 provided with a central bore 13 with recess. notches of the brushcutter shaft. Figure 3 illustrates a version of two 180 ° offset extensions 11; while figure 4 illustrates a three-length version 11 120 ° offset and Figure 5 illustrates a version of four 90 ° offset extensions 11 between them.
Como pode ser visto nessas figuras 3, 4 e 5, o cubo 12 é basicamente cilíndrico e os prolongamentos 11 são de secção transversal variável decrescente a partir do cubo As can be seen from these figures 3, 4 and 5, the hub 12 is basically cylindrical and the extensions 11 are of variable cross-section decreasing from the hub.
12 até a ponta, onde pode ser definido um ligeiro alargamento em forma de gota. 12 to the tip, where a slight drop-shaped widening can be defined.
A secção transversal de cada prolongamento 11 como apresentado na figura 7 pode apresentar uma forma ovalada, para reduzir a resistência aerodinâmica e ao mesmo tempo aumentar o poder de corte . The cross-section of each extension 11 as shown in Figure 7 may be oval in shape, to reduce aerodynamic strength while increasing shear power.
Os prolongamentos 11 podem também apresentar ou incorporar lâminas de estabilização 14 (ver figuras 6 e The extensions 11 may also have or incorporate stabilizing blades 14 (see figures 6 and
7), que definem pequenas asas, cuja função é a de aproveitar a passagem através do ar para impedir que o prolongamento 11 fique desorientado pelo impacto no corte das plantas. 7), which define small wings, whose function is to take advantage of the passage through the air to prevent the extension 11 from being disoriented by the impact on the cut of the plants.
O plástico, nessa forma construtiva, é moldado por injeção, e recebe como carga materiais que aumentam a resistência do elemento de corte. The plastic in this constructional form is injection molded and is loaded with materials that increase the strength of the cutting element.
Assim, com essa concepção construtiva admitem- se materiais como fibra de vidro, fibra de carbono, micro esferas de vidro, micro esferas de metal e outros. Para identificar que tipo de material e quais as características resultantes podem ser usados pigmentos de cores, nas peças produzidas. Thus, with this constructive design materials such as glass fiber, carbon fiber, glass microspheres, metal microspheres and others are admitted. To identify what kind of material and what the resulting characteristics can be used color pigments in the parts produced.
Para colocar na roçadeira, o novo elemento de corte é simplesmente comprimido contra o eixo do motor encaixando-se por engate rápido. Assim com um simples puxão e ele pode ser removido do cubo para ser substituído.
Portanto é muito rápida a ação de troca do elemento, que também não exige nenhum conhecimento especifico de mecanismo . For insertion into the brushcutter, the new cutting element is simply pressed against the motor shaft by snapping into place. So with a simple pull and it can be removed from the hub to be replaced. Therefore, the action of element exchange is very fast, which also does not require any specific mechanism knowledge.
O cubo 12 pode indicar, com etiqueta de relevo 15 o tipo de material empregado, para fins de reciclagem. Hub 12 may indicate, with relief label 15, the type of material employed for recycling purposes.
A quantidade de prolongamentos 11 expressa neste memorial variou de dois a quatro, porém, sua quantidade não influi na idéia básica deste requerimento de patente . The number of extensions 11 expressed in this memorial ranged from two to four, but their amount does not influence the basic idea of this patent application.
O usuário da roçadeira poderá levar consigo vários elementos de corte para montar na máquina, adequados às diferentes tipos de plantas que vai encontrando. The brushcutter user will be able to bring with them various cutting elements to be mounted on the machine, suitable for the different types of plants they encounter.
A resistência mecânica conseguida com este novo elemento de corte, seja pela forma, seja pelos aditivos do material empregado, será muitas vezes maior do que os atuais fios plásticos extrudados. The mechanical strength achieved with this new cutting element, both in shape and in the additives of the material employed, will be many times greater than current extruded plastic wires.
O cubo 12 admite uma tampa com recortes de saida para os prolongamentos lie com fixação no eixo do motor . Hub 12 admits a cover with output cutouts for extensions i and fixed to the motor shaft.
A máquina terá uma substancial redução de custo, e de preço ao consumidor porque não usa mais carretel com seus mecanismos. As possibilidades de defeito de funcionamento ficarão muito reduzidas, pois a peça mais frágil de uma roçadeira convencional é o carretel, eliminado na solução ora proposta. The machine will have a substantial reduction in cost and consumer price because it no longer uses spool with its mechanisms. The chances of malfunction will be greatly reduced, as the most fragile part of a conventional brushcutter is the spool, eliminated in the proposed solution.
Eventualmente o cubo 12 do elemento de corte pode ser montado sem pressão aos entalhos do eixo do motor 1, onde é mantido por uma pequena tampa que se engata ao eixo .
Optionally the hub 12 of the cutting element may be mounted without pressure to the motor shaft notches 1, where it is held by a small cap that engages the shaft.
Claims
REIVINDICAÇÕES
1- "ELEMENTO DE CORTE PARA ROÇADEIRAS", a ser utilizado em roçadeira provida de motor elétrico ou à gasolina, com eixo vertical, e haste com manipulo e gatilho de acionamento do motor, caracterizado pelo fato de ser compreendido por pelo menos dois prolongamentos radiais (11) igualmente espaçados entre si, partindo de um cubo cilíndrico (12) provido de um furo central (13) com encaixes para entalhes do eixo da roçadeira; sendo que a secção transversal de cada prolongamento (11), pode apresentar uma forma ovalada, que comporta pequenas asas (14), cuja função é a de aproveitar a passagem através do ar para impedir que o prolongamento (11) fique desorientado pelo impacto no corte das plantas. 1- "CUTTING ELEMENT FOR CLUTCHES", to be used in a brushcutter with electric or gasoline motor, with vertical axis, and rod with handle and motor trigger trigger, characterized by the fact that it is comprised of at least two radial extensions. (11) equally spaced from a cylindrical hub (12) provided with a central bore (13) with notches for the brushcutter shaft; the cross-section of each extension (11) having an oval shape having small wings (14), the purpose of which is to take advantage of the passage through the air to prevent the extension (11) being disoriented by the impact on cutting of plants.
2- "ELEMENTO DE CORTE PARA ROÇADEIRAS", de acordo com a reivindicação 1, caracterizado pelo fato do cubo (12) receber por engate rápido os prolongamentos radiais (11) que apresentam secção transversal variável decrescente a partir do cubo (12) até as pontas, onde podem apresentar saliências em forma de gota. 2. "CUTTER CUTTING ELEMENT" according to Claim 1, characterized in that the hub (12) receives by quick coupling the radial extensions (11) which have a variable cross-section decreasing from the hub (12) to tips where they may have drop-shaped protrusions.
3- "ELEMENTO DE CORTE PARA ROÇADEIRAS", de acordo com a reivindicação 1, caracterizado pelo fato da secção transversal dos prolongamentos (11) apresentar-se elíptica, achatada, com eixo maior na horizontal. "Cutter element" according to Claim 1, characterized in that the cross-section of the extensions (11) is elliptical, flat, with a larger horizontal axis.
4- "ELEMENTO DE CORTE PARA ROÇADEIRAS", de acordo com a reivindicação 1, caracterizado pelo fato dos prolongamentos (11) apresentarem lâminas de estabilização (14) que estendem-se em plano horizontal, situadas na borda oposta à borda de ataque.
5- "ELEMENTO DE CORTE PARA ROÇADEIRAS", de acordo com a reivindicação 1, caracterizado pelo fato de ser provido de dois prolongamentos (11) defasados de 180°. "Cutter element" according to claim 1, characterized in that the extensions (11) have stabilizing blades (14) extending horizontally, situated at the edge opposite the leading edge. 5. "CUTTING ELEMENT FOR MOWERS" according to claim 1, characterized in that it is provided with two 180 ° offset extensions (11).
6- "ELEMENTO DE CORTE PARA ROÇADEIRAS", de acordo com a reivindicação 1, caracterizado pelo fato de ser provido de três prolongamentos (11) defasados de 120°. "Cutter element" according to Claim 1, characterized in that it is provided with three 120 ° offset extensions (11).
7- "ELEMENTO DE CORTE PARA ROÇADEIRAS", de acordo com a reivindicação 1, caracterizado pelo fato de ser provido de quatro prolongamentos (11) defasados de 90° entre si. 7. "CUTTING ELEMENT FOR MOWERS" according to claim 1, characterized in that it is provided with four 90 ° offset extensions (11).
8- "ELEMENTO DE CORTE PARA ROÇADEIRAS", de acordo com a reivindicação 1, caracterizado pelo fato de admitir-se uma tampa, para o cubo (12) com recortes de saída para os prolongamentos (11) e com fixação no eixo do motor.
8. "CUTTING ELEMENT FOR CLUTCHES" according to claim 1, characterized in that a cover is allowed for the hub (12) with output cutouts for the extensions (11) and fixed to the motor shaft. .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI1004822 BRPI1004822A2 (en) | 2010-11-30 | 2010-11-30 | cutting element for brush cutters |
| BRPI1004822-7 | 2010-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012071636A1 true WO2012071636A1 (en) | 2012-06-07 |
Family
ID=46171110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/BR2011/000435 WO2012071636A1 (en) | 2010-11-30 | 2011-11-22 | Cutting element for brushcutters of the type with a flexible shaft with handles |
Country Status (2)
| Country | Link |
|---|---|
| BR (1) | BRPI1004822A2 (en) |
| WO (1) | WO2012071636A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10119368B2 (en) | 2013-07-05 | 2018-11-06 | Bruce A. Tunget | Apparatus and method for cultivating a downhole surface |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2030131A1 (en) * | 1969-06-18 | 1971-01-07 | ||
| GB1526519A (en) * | 1975-09-08 | 1978-09-27 | Roper Corp | Cutter disc assembly for rotary lawn mower |
| US6052907A (en) * | 1997-04-09 | 2000-04-25 | Sufix Usa, Inc. | Vegetation trimmer head |
| SI22523A (en) * | 2008-07-17 | 2008-12-31 | TOMAZIN@Alojz | Universal rotation head of a light portable motor-driven grass trimmer and its blade elements |
-
2010
- 2010-11-30 BR BRPI1004822 patent/BRPI1004822A2/en not_active IP Right Cessation
-
2011
- 2011-11-22 WO PCT/BR2011/000435 patent/WO2012071636A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2030131A1 (en) * | 1969-06-18 | 1971-01-07 | ||
| GB1526519A (en) * | 1975-09-08 | 1978-09-27 | Roper Corp | Cutter disc assembly for rotary lawn mower |
| US6052907A (en) * | 1997-04-09 | 2000-04-25 | Sufix Usa, Inc. | Vegetation trimmer head |
| SI22523A (en) * | 2008-07-17 | 2008-12-31 | TOMAZIN@Alojz | Universal rotation head of a light portable motor-driven grass trimmer and its blade elements |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10119368B2 (en) | 2013-07-05 | 2018-11-06 | Bruce A. Tunget | Apparatus and method for cultivating a downhole surface |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI1004822A2 (en) | 2013-03-12 |
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