FR2467668A2 - Portable motor driven cutting tool for e.g. concrete - comprises motor on which long bridge piece is mounted to support rotating cutter - Google Patents

Portable motor driven cutting tool for e.g. concrete - comprises motor on which long bridge piece is mounted to support rotating cutter Download PDF

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Publication number
FR2467668A2
FR2467668A2 FR7926212A FR7926212A FR2467668A2 FR 2467668 A2 FR2467668 A2 FR 2467668A2 FR 7926212 A FR7926212 A FR 7926212A FR 7926212 A FR7926212 A FR 7926212A FR 2467668 A2 FR2467668 A2 FR 2467668A2
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circle
machine according
tool
center
parts
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Granted
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FR7926212A
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French (fr)
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FR2467668B1 (en
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Individual
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Priority to FR7926212A priority Critical patent/FR2467668A2/en
Priority to DE19792943620 priority patent/DE2943620A1/en
Priority to GB7937464A priority patent/GB2033837A/en
Publication of FR2467668A2 publication Critical patent/FR2467668A2/en
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Publication of FR2467668B1 publication Critical patent/FR2467668B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/10—Auxiliary devices, e.g. bolsters, extension members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/003—Rotary saws comprising an essentially cylindrical body having cutting teeth arranged on its surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C1/00—Machines for producing flat surfaces, e.g. by rotary cutters; Equipment therefor
    • B27C1/007—For cutting through a work-piece with a tool having a rotational vector which is parallel to the surfaces generated by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/02—Cutter blocks; Other rotary cutting tools in the shape of long arbors, i.e. cylinder cutting blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/06—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with reciprocating saw-blades
    • B28D1/062—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with reciprocating saw-blades the saw blade rotating about its longitudinal axis

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mining & Mineral Resources (AREA)
  • Sawing (AREA)

Abstract

The tool consists of a bridge shaped frame at the end of which a drive motor is mounted. An elongated cutting tool is mounted between the ends of the bridge piece and can be coupled to the drive shaft of the motor. The cutter runs parallel to the edge of the bridge piece and is mounted in bearings on the bridge piece. The bridge piece has a thickness which at its most is equal to the thickness of the cutter. The cutter has at least one cutting edge which spirals along the length of the cutter.

Description

Le brevet principal a pour objet une machine tournante portable, utilisable notamment comme tronçonneuse pour le bois, le béton cellulaire, la mousse phénolique, les produits surgelés etc.., et comportant : - un moteur monté à l'intérieur d'un bottier préhensible et susceptible d'entraSner en rotation un arbre dont une extrémité dépasse de ce bottier; et - un équipement de travail constitué par
- un outil allongé susceptible d'être entrainé en rotation autour d'un axe longitudinal, dans le prolongement de l'arbre, et d'être fixé à cet arbre, par une première extrémité, de façon amovible, au moyen d'un organe de fixation monté sur l'extrémité dépassante de l'arbre et recevant lui-même la première extrémité de l'outil allongé; et
un archet de maintien s'étendant au voisinage de ltou- til, sur la longueur de ce dernier et déterminant avec lui un plan dans lequel l'archet présente une rigidité à la flexion supérieure à celle de l'outil, et perpendiculairement auquel l'archet présente sur la plus grande partie au moins de sa longueur, une épaisseur au plus égale au diamètre de l'outil, cet archet étant rendu solidaire du boîtier par l'une de ses extrémités et présentant, à son autre extrémité, un logement pour la seconde extrémité de l'outil, laquelle est adaptée pour tourillonner dans ce logement.The main patent relates to a portable rotary machine, which can be used in particular as a chainsaw for wood, aerated concrete, phenolic foam, frozen products, etc., and comprising: - a motor mounted inside a grippable case and capable of causing a shaft to rotate, one end of which protrudes from this case; and - work equipment consisting of
- an elongated tool capable of being rotated about a longitudinal axis, in the extension of the shaft, and of being fixed to this shaft, by a first end, in a removable manner, by means of a member fixing device mounted on the projecting end of the shaft and itself receiving the first end of the elongated tool; and
a holding bow extending in the vicinity of the tool, along the length of the latter and determining with it a plane in which the bow has a rigidity in bending greater than that of the tool, and perpendicular to which the bow present on at least most of its length, a thickness at most equal to the diameter of the tool, this bow being made integral with the housing by one of its ends and having, at its other end, a housing for the second end of the tool, which is adapted to pivot in this housing.

Cette machine est essentiellement caractérisée en ce que outil consiste en une lame vrillée présentant au moins deux bords de coupe se développant en hélice autour dudit axe longitudinal, dans le même sens de rotation que celui du moteur, afin de favoriser le dégagement des copeaux. This machine is essentially characterized in that the tool consists of a twisted blade having at least two cutting edges developing in a helix around said longitudinal axis, in the same direction of rotation as that of the motor, in order to promote the release of shavings.

Ainsi, l'originalité de cette machine réside dans le fait qu'elle est équipée, non pas d'une mèche-scie, comme c'est le cas des dispositifs connus, mais d'une lame. En cours de fonctionnement, les copeaux - et non plus la sciure - sont correctement dégagés, ne gênant en aucune façon la progression de la lame
Par ailleurs, de manière inattendue, la machine selon le brevet principal permet de couper non seulement le bois, mais encore le béton cellulaire, les produits abrasifs, la mousse phé nolique, les produits surgelés etc..., ce qui est strictement impossible à l'aide des appareils connus.Thus, the originality of this machine lies in the fact that it is equipped, not with a saw wick, as is the case with known devices, but with a blade. During operation, the shavings - and no longer the sawdust - are properly released, in no way interfering with the progress of the blade
Furthermore, unexpectedly, the machine according to the main patent makes it possible to cut not only the wood, but also the cellular concrete, the abrasive products, the phenolic foam, the frozen products etc ..., which is strictly impossible to using known devices.

Les Demandeurs ont toutefois cherché à rendre cette machine encore plus efficace. The Applicants have however sought to make this machine even more efficient.

A cet effet, la machine perfectionnée selon le présent certificat d'addition est essentiellement caractérisée en ce qu'elle est équipe d'une lame vrillée présentant trois bords de coupe. To this end, the machine perfected according to this addition certificate is essentially characterized in that it is equipped with a twisted blade having three cutting edges.

Cette lame présentera avantageusement en section, une forme dérivant d'un triangle équilatéral, dont les sommets appartiennent aux bords de coupe et dont chaque coté aurait été modifié, à partir de chacune de ses extrémités, par des incurvations, respectivement vers l'intérieur et vers l'extérieur, ces dernières se terminant chacune suivant une droite. This blade will advantageously present in section, a shape deriving from an equilateral triangle, the vertices of which belong to the cutting edges and each side of which would have been modified, from each of its ends, by bends, respectively inwards and outwards, the latter each ending in a straight line.

Cette forme spéciale de la lame donne particulièrement satisfaction dans le cas du béton cellulaire. This special shape of the blade is particularly satisfactory in the case of aerated concrete.

On décrira plus en détail ci-après, à titre indicatif et nullement limitatif, une machine perfectionnée conformément à ce certificat d'addition en référence au dessin annexé sur lequel
la figure 5 est une vue partielle en coupe de cette machine.There will be described in more detail below, by way of indication and in no way limitative, a machine perfected in accordance with this certificate of addition with reference to the appended drawing in which
Figure 5 is a partial sectional view of this machine.

La figure 6 représente une vue d'extrémité, caté moteur. Figure 6 shows an end view, engine cat.

La figure 7 est une vue en coupe transversale de ltou- til allongé. Figure 7 is a cross-sectional view of the elongated tool.

La figure 8 est une vue analogue à la figure 7, sur laquelle sont portées les dimensions de cet outil. Figure 8 is a view similar to Figure 7, on which are the dimensions of this tool.

Sur la figure 5, on a représenté uniquement l'équipement de travail de la machine constitué par l'outil allongé 4a et l'archet de maintien 12 avec son organe de fixation au bottier renfermant le moteur dont l'arbre coopère avec l'outil 4a. In FIG. 5, only the working equipment of the machine is shown, consisting of the elongated tool 4a and the retaining bow 12 with its member for fixing to the casing housing the motor, the shaft of which cooperates with the tool. 4a.

Ce dernier est constitué par une lame vrillée en hélice dont la section a été étudiée pour donner à la machine son efficacité maximale. The latter consists of a helically twisted blade whose cross-section has been studied to give the machine its maximum efficiency.

La forme de cette section dérive d'un triangle équilatéral AA1A2 dont les sommets appartiennent respectivement à chacun des bords de coupe et dont chaque côté aurait été modifié, à partir de chacune de ses extrémités, par des incurvations respectivement vers l'intérieur (AB, A131 A2B2) et vers l'extérieur (CA1,C1A2, C2A), ces dernières comportant chacune une partie terminale rectiligne (DA1, D1A2, D2A). The shape of this section derives from an equilateral triangle AA1A2 whose vertices belong respectively to each of the cutting edges and whose each side would have been modified, from each of its ends, by curvatures respectively inwards (AB, A131 A2B2) and outwards (CA1, C1A2, C2A), the latter each comprising a rectilinear terminal part (DA1, D1A2, D2A).

les parties de la lame comprises entre les courbes décrites par les points A et C, A1 et C1, A2 et C2 seront lisses, les autres parties pouvant être laissées brutes. the parts of the blade lying between the curves described by points A and C, A1 and C1, A2 and C2 will be smooth, the other parts being able to be left rough.

Les figures 7 et 8 illustrent une forme de lame particulièrement intéressante dont les cotes sont les suivantes
- les points A, A1 et A2 appartiennent à un cercle de centre 0 et de diamètre D = 8 mm;
- les parties AB, A131 et A2B2 sont chacune un arc de cercle de rayon r = 1 mm, dont le centre est situé sur le cercle (C1) de centre 0 et de rayon 3,2 mm;
- les parties BC, B1C1 et 22C2 sont rectilignes et elles sont tangentes au cercle (C2) de centre O et de rayon 2 mm, l'angle a entre les droites BC, B1C1 et B2C2 et les tangentes au cercle de centre O et de diamètre D respectivement aux points A,
A1 et A2 étant de 300.Dans d'autres configurations possibles pour la lame selon l'invention, cet angle a sera fonction de la résistance des matériaux employés et préférablement égal ou supérieur à 300.Figures 7 and 8 illustrate a particularly interesting blade shape whose dimensions are as follows
- points A, A1 and A2 belong to a circle with center 0 and diameter D = 8 mm;
the parts AB, A131 and A2B2 are each an arc of a circle of radius r = 1 mm, the center of which is situated on the circle (C1) of center 0 and of radius 3.2 mm;
- the parts BC, B1C1 and 22C2 are rectilinear and they are tangent to the circle (C2) of center O and of radius 2 mm, the angle a between the lines BC, B1C1 and B2C2 and the tangents to the circle of center O and of diameter D respectively at points A,
A1 and A2 being 300. In other possible configurations for the blade according to the invention, this angle a will depend on the resistance of the materials used and preferably equal to or greater than 300.

Par ailleurs, à titre de variante, on admettra que, les parties BC, Ei C1 et 32C2 soient incurvées vers l'intérieur, comme cela est indiqué en pointillé sur la-figure 8. Il est cependant totalement exclu que ces parties soient incurvées vers l'extérieur;
- les parties CD, C1D1 et C2D2 sont chacune un arc de cercle de rayon R = 4,1 mm, dont le centre est situé sur le cercle (C3) de centre O et de rayon 0,7 mm;
- les parties rectilignes DA1, D1 A2 et D2A sont telles qu'elles forment un angle ss de 100 avec les tangentes au cercle de centre O respectivement aux points A1 A2 et A.Furthermore, as a variant, it will be assumed that the parts BC, Ei C1 and 32C2 are curved inwards, as indicated by dotted lines in FIG. 8. It is however completely excluded that these parts are curved towards the exterior;
the parts CD, C1D1 and C2D2 are each an arc of a circle of radius R = 4.1 mm, the center of which is located on the circle (C3) of center O and of radius 0.7 mm;
- the rectilinear parts DA1, D1 A2 and D2A are such that they form an angle ss of 100 with the tangents to the circle with center O respectively at points A1 A2 and A.

Pour mémoire on notera que, dans ce cas particulier de lame, l'angle t entre les entre les droites DA1, D1A2 et D2A et les tan- gentes aux cercles de rayon r respectivement aux points A A et
A, est de 340. For the record, it will be noted that, in this particular case of blade, the angle t between the between the lines DA1, D1A2 and D2A and the tangents to the circles of radius r respectively at the points AA and
A, is 340.

Le pas "p" d'un bord de coupe hélicoidal de la lame selon le présent certificat d'addition sera avantageusement compris entre 4 et 10 cm. Il sera notamment de 6 cm. The pitch "p" of a helical cutting edge of the blade according to this addition certificate will advantageously be between 4 and 10 cm. In particular, it will be 6 cm.

Sur la figure 5, on peut voir également que l'extrémité de la lame 4a opposée au moteur est susceptible de tourner dans un palier 19 solidaire du logement 14 prévu sur l'archet, et que l'archet 12 comporte une bague cylindrique 13 destinée à permettre sa fixation amovible sur le boftier du moteur. Cette fixation est du type de celles décrites en référence aux figures 2 et 3 du brevet principal, utilisant un collier de serrage 16, une fente transversale 15a étant prévue dans la bague 13. In FIG. 5, it can also be seen that the end of the blade 4a opposite the motor is capable of rotating in a bearing 19 integral with the housing 14 provided on the bow, and that the bow 12 comprises a cylindrical ring 13 intended to allow its removable fixing on the motor boftier. This fixing is of the type described with reference to FIGS. 2 and 3 of the main patent, using a clamp 16, a transverse slot 15a being provided in the ring 13.

Par ailleurs, celle-ci comporte deux pointes 18a, 18b qui peuvent être enfoncées dans la pièce -à tronçonner de manière à servir de point d'appui et de rotation de la machine au cours de l'opération de tronçonnage.  Furthermore, it has two points 18a, 18b which can be driven into the part to be cut to serve as a fulcrum and rotation point of the machine during the cutting operation.

Claims (7)

- REVENDICATIONS- CLAIMS 1.- Machine tournante portable selon l'une quelconque des revendications 1 et 3 à 6 du Brevet principal, utilisable notamment comme tronçonneuse pour le bois, le béton cellulaire, la mousse phénolique, les produits surgelés etc..., et comportant 1.- portable rotary machine according to any one of claims 1 and 3 to 6 of the main patent, usable in particular as a chainsaw for wood, aerated concrete, phenolic foam, frozen products etc ..., and comprising - un moteur monté à l'intérieur d'un boîtier préhensible et susceptible d'entraîner en rotation un arbre dont une extrémité dépasse de ce boîtier; et - a motor mounted inside a graspable housing and capable of causing a shaft to rotate, one end of which protrudes from this housing; and - un équipement de travail constitué par - work equipment consisting of - un outil allongé susceptible d'être entraîné en rotation autour d'un axe longitudinal, dans le prolongement de l'arbre, et d'être fixé à cet arbre, par une première extrémité, de façon amovible, au moyen d'un organe de fixation monté sur l'extrémité dépassante de l'arbre et recevant lui-même la première extrémité de l'outil allongé, ce dernier consistant en une lame vrillée présentant plusieurs bords de coupe se développant en hélice autour dudit axe longitudinal, dans le même sens de rotation que celui du moteur afin de favoriser le dégagement des copeaux; et - an elongated tool capable of being rotated about a longitudinal axis, in the extension of the shaft, and of being fixed to this shaft, by a first end, in a removable manner, by means of a member fastener mounted on the protruding end of the shaft and itself receiving the first end of the elongated tool, the latter consisting of a twisted blade having several cutting edges developing helically around said longitudinal axis, in the same direction of rotation than that of the motor in order to promote the removal of shavings; and - un archet de maintien s'étendant au voisinage de l'outil, sur la longueur de ce dernier et déterminant avec lui un plan dans lequel l'archet présente une rigidité à la flexion supérieure à celle de l'outil, et perpendiculairement auquel l'archet présente, sur la plus grande partie au moins de sa longueur, une épaisseur au plus égale au diamètre de l'outil, cet archet étant rendu solidaire du boiter par l'une de ses extrémités et présentant,à son autre extrémité, un logement pour la seconde extrémité de l'outil, laquelle est adaptée pour tourillonner dans ce logement, caractérisée en ce que la lame vrillée présente trois bords de coupe. a holding bow extending in the vicinity of the tool, along the length of the latter and determining with it a plane in which the bow has a stiffness in bending greater than that of the tool, and perpendicular to which the '' bow has, over at least most of its length, a thickness at most equal to the diameter of the tool, this bow being made integral with the housing by one of its ends and having, at its other end, a housing for the second end of the tool, which is adapted to pivot in this housing, characterized in that the twisted blade has three cutting edges. 2.- Machine selon la revendication 1, caractérisée en ce que la lame vrillée présente, en section, une forme dérivant d'un triangle équilatéral AA1A2, dont les sommets appartiennent aux bords de coupe, et dont chaque c#té aurait été modifié, à partir de chacune de ses extrémités, par des incurvations, respectivement vers l'intérieur (AS, A1E1, A232) et vers l'extérieur (CA1, C1A2, 2. Machine according to claim 1, characterized in that the twisted blade has, in section, a shape deriving from an equilateral triangle AA1A2, the vertices of which belong to the cutting edges, and of which each side has been modified, from each of its ends, by bends, respectively inward (AS, A1E1, A232) and outward (CA1, C1A2, C2A), ces dernières se terminant chacune suivant une droite (DA1,C2A), the latter each ending in a straight line (DA1, D1A2, D2A). D1A2, D2A). 3.- Machine selon la revendication 2, caractérisée en ce que l'angle formé par les droites BC, 21C1 et 22C2 et les tangentes respectivement aux points A, A1 et A2 au cercle passantpsr ces trois points est-préférablement égal ou supérieur à 300. 3.- Machine according to claim 2, characterized in that the angle formed by the straight lines BC, 21C1 and 22C2 and the tangents respectively at points A, A1 and A2 to the passing circle these three points is preferably equal to or greater than 300 . 4.- Machine selon la revendication 2 ou 3, caractérisée en ce que les parties BC, 31C1 et 32C2 sont rectilignes ou incurvées vers l'intérieur. 4.- Machine according to claim 2 or 3, characterized in that the parts BC, 31C1 and 32C2 are straight or curved inward. 5.- Machine selon la revendication 2 ou 3, caractérisée en ce que les points A, A1 et A2 appartiennent à un cercle de centre O et de diamètre 8 mm, les parties BC, 31C1 et 32C2 sont rectilignes et sont tangentes à un cercle de centre O et de rayon 2 mm, l'angle a tel que défini à la revendication 3 étant de 300, les parties AS, A121 et A2B2 sont chacune un arc de cercle de rayon 1 mm, dont le centre est situé sur un cercle de centre O et de rayon 3,2 mm, les parties CD, C1D1 et C2D2sontchacuneunarcdecer- cle de rayon 4,1 mm, dont le centre est situé sur un cercle de ra yon 0,7 1 2 les parties rectilignes DA D1A2 t D2A forment un yon 0,7 mm et les parties rectilignes DA1, D1A2 et A forment un angle de 100 avec les tangentes au cercle de centre O respectivement aux points A1, A2 et A. 5. Machine according to claim 2 or 3, characterized in that the points A, A1 and A2 belong to a circle of center O and of diameter 8 mm, the parts BC, 31C1 and 32C2 are rectilinear and are tangent to a circle with center O and radius 2 mm, the angle a as defined in claim 3 being 300, the parts AS, A121 and A2B2 are each an arc of a circle of radius 1 mm, the center of which is located on a circle with center O and radius 3.2 mm, the parts CD, C1D1 and C2D2 each have a circle with a radius of 4.1 mm, the center of which is located on a radius circle 0.7 1 2 the straight parts DA D1A2 t D2A form a 0.7 mm yon and the rectilinear parts DA1, D1A2 and A form an angle of 100 with the tangents to the circle of center O respectively at points A1, A2 and A. 6.- Machine selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le pas "p" d'un bord de coupe de la lame est compris entre 4 et 10 cm, et est notamment de 6cm. 6.- Machine according to any one of claims 1 to 5, characterized in that the pitch "p" of a cutting edge of the blade is between 4 and 10 cm, and is in particular 6cm. 7.- Machine selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la bague 13 de fixation de l'archet 12 au boîtier comporte deux pointes 18a, 186 parallèle à la lame vrillée.  7.- Machine according to any one of claims 1 to 3, characterized in that the ring 13 for fixing the bow 12 to the housing has two points 18a, 186 parallel to the twisted blade.
FR7926212A 1978-10-27 1979-10-23 Portable motor driven cutting tool for e.g. concrete - comprises motor on which long bridge piece is mounted to support rotating cutter Granted FR2467668A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7926212A FR2467668A2 (en) 1979-10-23 1979-10-23 Portable motor driven cutting tool for e.g. concrete - comprises motor on which long bridge piece is mounted to support rotating cutter
DE19792943620 DE2943620A1 (en) 1978-10-27 1979-10-29 PORTABLE MOTORIZED CHIP-EQUIPMENT MACHINE
GB7937464A GB2033837A (en) 1978-10-27 1979-10-29 A rotary machine having a twisted blade with helical cutting edges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7926212A FR2467668A2 (en) 1979-10-23 1979-10-23 Portable motor driven cutting tool for e.g. concrete - comprises motor on which long bridge piece is mounted to support rotating cutter

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FR2467668A2 true FR2467668A2 (en) 1981-04-30
FR2467668B1 FR2467668B1 (en) 1983-12-23

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FR7926212A Granted FR2467668A2 (en) 1978-10-27 1979-10-23 Portable motor driven cutting tool for e.g. concrete - comprises motor on which long bridge piece is mounted to support rotating cutter

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT397486B (en) * 1993-03-10 1994-04-25 Hammerschmid Peter Tubular wood-working tool

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE358644A (en) *
GB610255A (en) * 1946-04-02 1948-10-13 Reginald Walter Knowles Improvements in and relating to cutting tools
US3003324A (en) * 1959-07-07 1961-10-10 John R Vance Container for beverages or the like
US3129734A (en) * 1960-03-11 1964-04-21 Frank J Bobryk Power driven chuck and rotary saw bit therefor
FR1379298A (en) * 1963-12-30 1964-11-20 Weldon Tool Co Tool with improved cutting qualities
DE1270464B (en) * 1965-11-04 1968-06-12 Zaklady Produkcji Elementow Bu Process for cutting semi-plastic masses cast in molds, especially aerated concrete
US3704517A (en) * 1970-12-07 1972-12-05 Thomas M Deterling Rotating rod saw and method of making same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE358644A (en) *
GB610255A (en) * 1946-04-02 1948-10-13 Reginald Walter Knowles Improvements in and relating to cutting tools
US3003324A (en) * 1959-07-07 1961-10-10 John R Vance Container for beverages or the like
US3129734A (en) * 1960-03-11 1964-04-21 Frank J Bobryk Power driven chuck and rotary saw bit therefor
FR1379298A (en) * 1963-12-30 1964-11-20 Weldon Tool Co Tool with improved cutting qualities
DE1270464B (en) * 1965-11-04 1968-06-12 Zaklady Produkcji Elementow Bu Process for cutting semi-plastic masses cast in molds, especially aerated concrete
US3704517A (en) * 1970-12-07 1972-12-05 Thomas M Deterling Rotating rod saw and method of making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT397486B (en) * 1993-03-10 1994-04-25 Hammerschmid Peter Tubular wood-working tool

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FR2467668B1 (en) 1983-12-23

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