EP0083287B1 - Hard material button-type insert for drill bits - Google Patents
Hard material button-type insert for drill bits Download PDFInfo
- Publication number
- EP0083287B1 EP0083287B1 EP82402381A EP82402381A EP0083287B1 EP 0083287 B1 EP0083287 B1 EP 0083287B1 EP 82402381 A EP82402381 A EP 82402381A EP 82402381 A EP82402381 A EP 82402381A EP 0083287 B1 EP0083287 B1 EP 0083287B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- button
- teeth
- hard material
- stud
- tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- 239000000463 material Substances 0.000 title claims abstract description 12
- 238000005553 drilling Methods 0.000 claims abstract description 10
- 230000002035 prolonged effect Effects 0.000 claims abstract 2
- 230000007423 decrease Effects 0.000 claims description 4
- 238000002788 crimping Methods 0.000 description 6
- 208000031968 Cadaver Diseases 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229910052580 B4C Inorganic materials 0.000 description 1
- 229910001347 Stellite Inorganic materials 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004459 forage Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
Definitions
- the present invention is in the field of drilling. More particularly, it relates to drilling tools, for example cutters for pneumatic hammers, perforators or tricones.
- FIG. 1 shows a conventional cutter consisting of a head 1 extended by a tail 2 intended to be placed for example at the end of the elongated tubes of a down-the-hole pneumatic hammer.
- the working surface 3 of the head is pierced with cells 4 in which the buttons 5 are crimped.
- FIG. 1 a part of the head 1 has been shown in section to clearly show the structure of cell 4 and of the button 5.
- buttons 5 are made of very hard material, for example tungsten carbide, stellite, boron carbide, ceramic, etc.
- the shape of the cell 4 is generally cylindrical and the corresponding button is also cylindrical, but it has a diameter slightly greater than that of the cell 4.
- the inner wall of the cell 4 and the outer surface of the button 5 are carefully adjusted for crimping the button 5 in the socket 4.
- the positioning of the button can be done by means of a hydraulic press or a pneumatic hammer with or without temperature difference between the two elements to be crimped.
- buttons perform a very efficient drilling job, they nevertheless have some drawbacks. In particular, it happens that after a certain operating time the button is no longer secured to the cell in which it has been crimped and starts to rotate on itself, in its cell, thus becoming much less effective.
- US-A-3,389,761 describes a button which is not smooth but has teeth located along generatrices of the surface of the body of the button. However, such a button is also likely to come out of its cell during impacts to the tool carrying the button because no retention of the button is ensured in the longitudinal direction.
- buttons are liable to separate from the cell in which they are housed. This problem is serious for all the buttons crimped on the surface of the working tool, but it is even more serious for the buttons placed on the periphery of the tool because they are subjected to friction on the wall of the drilled hole. .
- the present invention overcomes these drawbacks. It targets a button capable of being crimped into a cell in a very secure manner, that is to say without risk of separation of the button and its cell.
- the invention also relates to a perforation tool provided with buttons according to the invention, that is to say a very reliable tool.
- the invention applies to a hard material button for a perforation tool, consisting of a head for the actual drilling work, extended by a body, preferably cylindrical, intended to be crimped at the end. of the tool, in a cell of dimensions slightly smaller than those of the body, in which the external surface of the body has teeth intended to penetrate into the internal wall of the cell during crimping of the button in the cell.
- the teeth are located along helices traced on the surface of the body.
- the teeth are of triangular section and it is advantageous to produce each tooth with an apex angle of a value of approximately 90 °.
- the teeth may also be of trapezoidal or semi-circular section.
- each tooth is constant over the entire length of the tooth, while in a second embodiment, which will be preferred to the first mode, the height of each tooth n is not constant, but it decreases linearly from a maximum height, at the end of the tooth located towards the head of the button, to a zero height at the other end of the button.
- Figures 2 and 3 both show buttons consisting of a head 6 for the actual drilling work, extended by a cylindrical body 7 intended to be crimped at the end of a tool such as the tool of the Figure 1, in a cylindrical cell 4.
- the outer surface of the body 7 has helical teeth 8 intended to penetrate the inner wall of the cell 4 during crimping of the button in the cell.
- FIG. 4 show a button in which the teeth 8 have a constant height over their entire length.
- the body 7 of the button has a diameter of value D at its two ends and at the bottom of the teeth.
- a value D was of course provided slightly greater than the value D ′.
- a circle of diameter D ′ is shown in dotted lines, in order to be able to compare this diameter with the diameter D of the button.
- the teeth 8 all have an apex angle of approximately 90 °.
- the diameter on top of the teeth 8 has been identified in the figures by DM ".
- the value D M " is of course greater than D and therefore D '.
- FIGS. 3, 4 and 5 show a button in which the teeth have a height which decreases linearly from one end to the other of the tooth.
- the diameter D of the body 7 of the button at its two ends and at the bottom of the teeth is the same as that of the button in FIG. 2.
- the angle at the top of the teeth 8 is always around 90 ° but the height of the tooth decreases linearly from a maximum height at the end of the tooth located towards the head of the button (see Figure 4) to a zero height at the other end of the button: In Figure 5, this height is almost zero.
- the diameter on the top of the teeth has been identified by DM "in FIG. 4, where this diameter is maximum. In FIG. 5, this diameter being almost zero, has been identified by D" m , the value D " m being practically equal to D.
- the button in Figure 3 is actually anchored in the cell 4 during crimping. Indeed, in addition to the initial tightening of a value D-D ', the total penetration of the teeth 8 into the socket is added. The conical shape of the teeth allows easier mounting of the button in the socket.
- the button according to the invention has great advantages:
- the button is unable to turn on itself, in its cell.
- the production of a button according to the invention is not much more difficult than the production of a smooth button.
- the helical teeth can be obtained during sintering or by any other process.
- teeth whose section would not be triangular but trapezoidal or semi-circular or whose sides would be for example involute of circle.
- buttons whose external surface of the body is not cylindrical, but for example conical, the structure and the arrangement of the teeth being similar to those described above, for example during the description of the figure 2.
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling Tools (AREA)
- Earth Drilling (AREA)
- Adornments (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Laminated Bodies (AREA)
- Contacts (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
La présente invention se situe dans le domaine du forage. Plus particulièrement, elle concerne les outils de forage, par exemple les taillants pour marteaux pneumatiques, les perforateurs ou les tricônes.The present invention is in the field of drilling. More particularly, it relates to drilling tools, for example cutters for pneumatic hammers, perforators or tricones.
Dans les outils de forage connus jusqu'à présent, la surface de l'outil qui travaille est en général munie de boutons (ou picots) extrêmement durs, destinés à pénétrer dans le terrain comme autant de pointes de dureté. La figure 1 représente un taillant classique constitué d'une tête 1 prolongée par une queue 2 destinée à être placée par exemple à l'extrémité des tubes allonges d'un marteau pneumatique fond-de-trou. La surface de travail 3 de la tête est percée d'alvéoles 4 dans lesquelles sont sertis des boutons 5. Sur la figure 1, une partie de la tête 1 a été représentée en coupe pour bien montrer la structure de l'alvéole 4 et du bouton 5. Quand l'outil de forage est en fonctionnement, le marteau percute la queue 2 du taillant et cette percussion est transmise à chaque bouton 5, provoquant l'éclatement de la roche par dépassement de la résistance de celle-ci à la compression.In drilling tools known until now, the surface of the working tool is generally provided with extremely hard buttons (or pins), intended to penetrate into the ground like so many hardness tips. Figure 1 shows a conventional cutter consisting of a
Les boutons 5 sont en matériau très dur, par exemple en carbure de tungstène, en stellite, en carbure de bore, en céramique, etc....The
La forme de l'alvéole 4 est généralement cylindrique et le bouton correspondant l'est également mais celui-ci a un diamètre légèrement supérieur à celui de l'alvéole 4. La paroi intérieure de l'alvéole 4 et la surface extérieure du bouton 5 sont soigneusement rectifiées en vue du sertissage du bouton 5 dans l'alvéole 4. La mise en place du bouton peut se faire au moyen d'une presse hydraulique ou d'un marteau pneumatique avec ou sans différence de température des deux éléments à sertir.The shape of the
Bien que les outils de perforation munis de boutons, tels que décrits ci-dessus, effectuent un travail de forage très efficace, ils présentent cependant quelques inconvénients. En particulier, il arrive qu'au bout d'un certain temps de fonctionnement le bouton ne soit plus solidaire de l'alvéole dans laquelle il a été serti et se mette à tourner sur lui-même, dans son alvéole, devenant ainsi beaucoup moins efficace.Although the punching tools provided with buttons, as described above, perform a very efficient drilling job, they nevertheless have some drawbacks. In particular, it happens that after a certain operating time the button is no longer secured to the cell in which it has been crimped and starts to rotate on itself, in its cell, thus becoming much less effective.
En outre, quand le bouton commence à tourner sur lui-même dans son alvéole, il risque d'être extrait de celle-ci par les forces d'inertie qui sollicitent le bouton lors de la rotation de l'outil de perforation en fonctionnement ou par les chocs produits par le marteau.In addition, when the button begins to rotate on its own in its cell, it risks being extracted from it by the inertial forces which stress the button during the rotation of the perforating tool in operation or by the shocks produced by the hammer.
Le brevet US-A-3.389.761 décrit un bouton qui n'est pas lisse mais présente des dents situées le long de génératrices de la surface du corps du bouton. Toutefois, un tel bouton est également susceptible de sortir de son alvéole lors des chocs subis par l'outil portant le bouton car aucune retenue du bouton n'est assurée dans le sens longitudinal.US-A-3,389,761 describes a button which is not smooth but has teeth located along generatrices of the surface of the body of the button. However, such a button is also likely to come out of its cell during impacts to the tool carrying the button because no retention of the button is ensured in the longitudinal direction.
En résumé, on peut écrire que les inconvénients des outils de perforation connus résident surtout dans le fait que les boutons risquent de se désolidariser de l'alvéole dans laquelle ils sont logés. Ce problème est grave pour l'ensemble des boutons sertis sur la surface de l'outil qui travaille mais il est encore plus grave pour les boutons placés en périphérie de l'outil car ceux-ci sont soumis au frottement sur la paroi du trou foré.In summary, it can be written that the drawbacks of known perforation tools lie above all in the fact that the buttons are liable to separate from the cell in which they are housed. This problem is serious for all the buttons crimped on the surface of the working tool, but it is even more serious for the buttons placed on the periphery of the tool because they are subjected to friction on the wall of the drilled hole. .
La présente invention remédie à ces inconvénients. Elle vise un bouton susceptible d'être serti dans une alvéole de façon très sûre, c'est-à-dire sans risque de désolidarisation du bouton et de son alvéole. L'invention vise également un outil de perforation muni de boutons selon l'invention, c'est-à-dire un outil très fiable.The present invention overcomes these drawbacks. It targets a button capable of being crimped into a cell in a very secure manner, that is to say without risk of separation of the button and its cell. The invention also relates to a perforation tool provided with buttons according to the invention, that is to say a very reliable tool.
Plus particulièrement, l'invention s'applique à un bouton en matériau dur pour outil de perforation, constitué d'une tête pour le travail de forage proprement dit, prolongée par un corps, de préférence cylindrique, destiné à être serti à l'extrémité de l'outil, dans une alvéole de dimensions légèrement inférieures à celles du corps, dans lequel la surface extérieure du corps comporte des dents destinées à pénétrer dans la paroi intérieure de l'alvéole lors du sertissage du bouton dans l'alvéole.More particularly, the invention applies to a hard material button for a perforation tool, consisting of a head for the actual drilling work, extended by a body, preferably cylindrical, intended to be crimped at the end. of the tool, in a cell of dimensions slightly smaller than those of the body, in which the external surface of the body has teeth intended to penetrate into the internal wall of the cell during crimping of the button in the cell.
Selon l'invention, les dents sont situées le long d'hélices tracées sur la surface du corps.According to the invention, the teeth are located along helices traced on the surface of the body.
Dans un mode préféré de réalisation de l'invention, les dents sont de section triangulaire et l'on a avantage à réaliser chaque dent avec un angle au sommet d'une valeur d'environ 90°. Cependant, les dents peuvent être aussi de section trapézoïdale ou semi-circulaire.In a preferred embodiment of the invention, the teeth are of triangular section and it is advantageous to produce each tooth with an apex angle of a value of approximately 90 °. However, the teeth may also be of trapezoidal or semi-circular section.
Dans un premier mode de réalisation de l'invention, la hauteur de chaque dent est constante sur toute la longueur de la dent, alors que dans un deuxième mode de réalisation, que l'on préférera au premier mode, la hauteur de chaque dent n'est pas constante, mais elle décroît linéairement d'une hauteur maximale, à l'extrémité de la dent située vers la tête du bouton, jusqu'à une hauteur nulle à l'autre extrémité du bouton.In a first embodiment of the invention, the height of each tooth is constant over the entire length of the tooth, while in a second embodiment, which will be preferred to the first mode, the height of each tooth n is not constant, but it decreases linearly from a maximum height, at the end of the tooth located towards the head of the button, to a zero height at the other end of the button.
Afin de mieux comprendre l'invention, on va décrire de façon plus précise deux modes de réalisation de l'invention, donnés uniquement à titre d'exemples, et représentés par les dessins annexés.
- La figure 1 représente un schéma d'ensemble d'un outil de perforation muni de boutons en matériau dur. Cette figure montre la façon dont sont disposés lesdits boutons sur l'outil. Les boutons dessinés sur cette figure sont des boutons faisant partie de l'état de la technique connue mais il est bien sûr possible de monter sur l'outil de la figure 1 des boutons selon l'invention.
- La figure 2 montre, à une échelle plus grande que celle de la figure 1, un premier mode de réalisation d'un bouton selon l'invention, avec l'alvéole dans laquelle, il est destiné à être serti. Dans ce premier mode, les dents hélicoïdales faisant saillie. à la surface extérieure du corps ont une hauteur constante.
- La figure 3 montre un deuxième mode de réalisation d'un bouton selon l'invention, avec l'alvéole qui lui correspond. Dans ce deuxième mode, les dents hélicoïdales faisant saillie n'ont pas une hauteur constante et elles donnent ainsi au corps du bouton une forme conique.
- La figure 4 représente une coupe suivant IV-IV du bouton de la figure 2. Elle représente également une coupe suivant IV-IV du bouton de la figure 3, effectuée à l'extrémité du corps du bouton où la hauteur des dents est maximale. En effet, à ce niveau, la coupe par un plan perpendiculaire à l'axe du bouton est semblable à une coupe du bouton de la figure 2.
- La figure 5 représente une coupe suivant V-V du bouton de la figure 3, effectuée à un niveau où la hauteur de la dent est presque nulle, c'est-à-dire près de l'extrémité du corps du bouton la plus éloignée de la tête de forage.
- FIG. 1 represents an overall diagram of a perforation tool provided with buttons made of hard material. This figure shows how these buttons are arranged on the tool. The buttons drawn in this figure are buttons forming part of the known state of the art, but it is of course possible to mount on the tool of FIG. 1 buttons according to the invention.
- Figure 2 shows, on a larger scale than that of Figure 1, a first embodiment of a button according to the invention, with the cell in which it is intended to be crimped. In this first mode, the helical teeth protruding. to the outer surface of the body have a constant height.
- Figure 3 shows a second embodiment of a button according to the invention, with the cell which corresponds to it. In this second mode, the projecting helical teeth do not have a constant height and thus give the body of the button a conical shape.
- 4 shows a section along IV-IV of the button of Figure 2. It also shows a section along IV-IV of the button of Figure 3, made at the end of the body of the button where the height of the teeth is maximum. Indeed, at this level, the section through a plane perpendicular to the axis of the button is similar to a section of the button in FIG. 2.
- 5 shows a section along VV of the button of Figure 3, taken at a level where the height of the tooth is almost zero, that is to say near the end of the body of the button farthest from the drilling head.
Les figures 2 et 3 représentent toutes les deux des boutons constitués d'une tête 6 pour le travail de forage proprement dit, prolongée par un corps cylindrique 7 destiné à être serti à l'extrémité d'un outil tel que l'outil de la figure 1, dans une alvéole cylindrique 4. La surface extérieure du corps 7 comporte des dents hélicoïdales 8 destinées à pénétrer dans la paroi intérieure de l'alvéole 4 lors du sertissage du bouton dans l'alvéole.Figures 2 and 3 both show buttons consisting of a head 6 for the actual drilling work, extended by a
On se reportera tout d'abord aux figures 2 et 4 qui représentent un bouton dans lequel les dents 8 ont une hauteur constante sur toute leur longueur. Ainsi la coupe par un plan perpendiculaire à l'axe du bouton est toujours identique à la figure 4. Le corps 7 du bouton a un diamètre de valeur D à ses deux extrémités et au fond des dents. En vue du sertissage du bouton dans l'alvéole 4 de diamètre D' on a bien sûr prévu une valeur D légèrement supérieure à la valeur D'. Sur la figure 4 on a représenté en pointillés un cercle de diamètre D', pour pouvoir comparer ce diamètre au diamètre D du bouton. Les dents 8 ont toutes un angle au sommet d'environ 90°. Le diamètre sur sommet des dents 8 a été repéré sur les figures par DM". La valeur DM" est bien sûr supérieure à D et donc à D'. Lors du sertissage du bouton dans l'alvéole 4, au serrage initial entre le bouton et l'alvéole dû à la différence de diamètre D-D', s'ajoute donc la pénétration totale des dents 8 dans la paroi de l'alvéole 4.We will first refer to Figures 2 and 4 which show a button in which the
On se reportera maintenant aux figures 3, 4 et 5. Ces figures montrent un bouton dans lequel les dents ont une hauteur qui décroît linéairement d'une extrémité à l'autre de la dent. Le diamètre D du corps 7 du bouton à ses deux extrémités et au fond des dents est le même que celui du bouton de la figure 2. L'angle au sommet des dents 8 est toujours d'environ 90° mais la hauteur de la dent diminue linéairement d'une hauteur maximale à l'extrémité de la dent située vers la tête du bouton (voir figure 4) jusqu'à une hauteur nulle à l'autre extrémité du bouton: Sur la figure 5, cette hauteur est presque nulle. On a repéré le diamètre sur sommet des dents par DM" sur la figure 4, où ce diamètre est maximal. Sur la figure 5, ce diamètre étant presque nul, a été repéré par D"m, la valeur D"m étant pratiquement égale à D.Reference will now be made to FIGS. 3, 4 and 5. These figures show a button in which the teeth have a height which decreases linearly from one end to the other of the tooth. The diameter D of the
Comme le bouton de la figure 2, le bouton de la figure 3 se trouve véritablement ancré dans l'alvéole 4 lors du sertissage. En effet, en plus du serrage initial d'une valeur D-D' s'ajoute la pénétration totale des dents 8 dans l'alvéole. La forme conique des dents permet un montage plus aisé du bouton dans l'alvéole.Like the button in Figure 2, the button in Figure 3 is actually anchored in the
Le bouton selon l'invention présente de grands avantages :,The button according to the invention has great advantages:,
Une fois serti, le bouton est dans l'impossibilité de tourner sur lui-même, dans son alvéole.Once crimped, the button is unable to turn on itself, in its cell.
D'autre part, la présence des dents hélicoïdales en saillie à la surface extérieure du corps du bouton augmente de façon considérable la surface de contact entre le bouton et la paroi intérieure de l'alvéole. Ceci a pour conséquence une importante réduction des effets d'inertie liés à la masse du bouton. Les risques d'extraction du bouton hors de son alvéole sont donc inexistants.On the other hand, the presence of the helical teeth projecting from the outer surface of the button body considerably increases the contact surface between the button and the inner wall of the socket. This results in a significant reduction of the inertia effects related to the mass of the button. The risks of extracting the button from its socket are therefore nonexistent.
La réalisation d'un bouton selon l'invention n'est pas beaucoup plus difficile que la réalisation d'un bouton lisse. Les dents hélicoïdales peuvent être obtenues lors du frittage ou par tout autre procédé.The production of a button according to the invention is not much more difficult than the production of a smooth button. The helical teeth can be obtained during sintering or by any other process.
On peut aussi imaginer des dents dont la section ne serait pas triangulaire mais trapézoïdale ou semi-circulaire ou dont les flancs seraient par exemple en développante de cercle.One can also imagine teeth whose section would not be triangular but trapezoidal or semi-circular or whose sides would be for example involute of circle.
L'invention pourrait évidemment s'appliquer à des boutons dont la surface extérieure du corps ne serait pas cylindrique, mais par exemple conique, la structure et la disposition des dents étant semblables à celles décrites plus haut, par exemple lors de la description de la figure 2.The invention could obviously apply to buttons whose external surface of the body is not cylindrical, but for example conical, the structure and the arrangement of the teeth being similar to those described above, for example during the description of the figure 2.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT82402381T ATE15249T1 (en) | 1981-12-24 | 1982-12-24 | BUTTON-SHAPED HARD MATERIAL INSERT FOR DRILL BITS. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8124209A FR2519064A1 (en) | 1981-12-24 | 1981-12-24 | BUTTON IN HARD MATERIAL FOR PERFORATION TOOL AND TOOL COMPRISING SUCH A BUTTON |
| FR8124209 | 1981-12-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0083287A1 EP0083287A1 (en) | 1983-07-06 |
| EP0083287B1 true EP0083287B1 (en) | 1985-08-28 |
Family
ID=9265388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82402381A Expired EP0083287B1 (en) | 1981-12-24 | 1982-12-24 | Hard material button-type insert for drill bits |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0083287B1 (en) |
| AT (1) | ATE15249T1 (en) |
| DE (1) | DE3265914D1 (en) |
| ES (1) | ES276309Y (en) |
| FR (1) | FR2519064A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5678645A (en) * | 1995-11-13 | 1997-10-21 | Baker Hughes Incorporated | Mechanically locked cutters and nozzles |
| US7416035B2 (en) | 2003-08-13 | 2008-08-26 | Smith International, Inc. | Shaped inserts with increased retention force |
| AU2007201463B2 (en) * | 2003-08-13 | 2010-09-09 | Sandvik Intellectual Property Ab | Shaped inserts with increased retention force |
| RU2604885C1 (en) * | 2016-02-26 | 2016-12-20 | Николай Митрофанович Панин | Drill bit |
| EP3696368B1 (en) * | 2019-02-15 | 2023-10-11 | Sandvik Mining and Construction Tools AB | Insert for a journal leg of a rotary drill tool |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1112446A (en) * | 1965-08-18 | 1968-05-08 | Tungsten Carbide Dev Ltd | Improvements in or relating to coal-cutter picks and the like with hard metal tips |
| US3382940A (en) * | 1965-10-21 | 1968-05-14 | Frank E. Stebley | Percussion drill bit |
| US3389761A (en) * | 1965-12-06 | 1968-06-25 | Dresser Ind | Drill bit and inserts therefor |
| US3581835A (en) * | 1969-05-08 | 1971-06-01 | Frank E Stebley | Insert for drill bit and manufacture thereof |
| US3603414A (en) * | 1970-01-30 | 1971-09-07 | Frank E Stebley | Insert for drilling unit |
| CA1093066A (en) * | 1977-06-10 | 1981-01-06 | David C. Dick | Percussion rock bit |
| US4271917A (en) * | 1979-04-09 | 1981-06-09 | Syndrill Products Joint Venture | Locking device for hard metal inserts |
-
1981
- 1981-12-24 FR FR8124209A patent/FR2519064A1/en active Granted
-
1982
- 1982-12-23 ES ES1982276309U patent/ES276309Y/en not_active Expired
- 1982-12-24 AT AT82402381T patent/ATE15249T1/en not_active IP Right Cessation
- 1982-12-24 EP EP82402381A patent/EP0083287B1/en not_active Expired
- 1982-12-24 DE DE8282402381T patent/DE3265914D1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3265914D1 (en) | 1985-10-03 |
| EP0083287A1 (en) | 1983-07-06 |
| FR2519064B1 (en) | 1984-07-13 |
| ATE15249T1 (en) | 1985-09-15 |
| ES276309Y (en) | 1984-12-16 |
| ES276309U (en) | 1984-05-01 |
| FR2519064A1 (en) | 1983-07-01 |
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