baber/WOPTO huggingface dataset:
Patent IE-49101-B1 (IE)
Title: Substituted n-propargyl-anilines,processes for their preparation,and their use as fungicides
IPC: C07D247/00
Filed: 1979-10-30
Abstract: Die Erfindung betrifft neue substituierte N-Propargyl-aniline, mehrere Verfahren zu ihrer Herstellung und ihre Verwendung als Fungizide. Die neuen Verbindungen der Formel in welcher R' bis R6 und die in der Beschreibung angegebene Bedeutung besitzen, können zum Beispiel dann erhalten werden, wenn man N-Propargyl-aniline mit Säurechloriden oder -bromiden bzw. -anhydriden in Gegenwart eines Verdünnungsmittels und gegebenenfalls in Gegenwart eines Säurebindemittels umsetzt. Daneben gibt es noch andere Verfahren. Als Pflanzenschutzmittel können die erfindungsgemäßen Wirkstoffe mit besonders gutem Erfolg zur Bekämpfung von Oomyceten, z. B. gegen Phytophthora infestans eingesetzt werden.
Patent IE-60074-B1 (IE)
Title: Ostomy appliance coupling with viscoelastic liner
IPC: A61F5/448
Filed: 1987-08-06
Abstract: A coupling ring assembly for an ostomy appliance has a two-piece coupling ring assembly. One (13a) of the rings has a generally radially- facing annular channel for receiving and detachably engaging a latching flange (31) of the other (13b) of the rings, the channel having a deformable liner (29) of viscoelastic polymeric material secured therein. In a preferred embodiment, the liner (29) also has pressure-sensitive adhesive properties.
Patent IE-52186-B1 (IE)
Title: Pharmacologically active peptides
IPC: A61P25/04
Filed: 1981-10-16
Abstract: Compounds of the formula and pharmaceutically acceptable non-toxic acid addition salts thereof, in which R is hydrogen, methyl, ethyl, cyclopropylmethyl, or allyl; A is a residue of a D-amino acid selected from Ala, Abu, Nva. Val, Nle, Leu, lie, Gly(A1), Gly(Cp), Met, Cys(Me), Met(O), Cys(Me) (0), Ser, Thr, and Hse; R1 is C1-C3 primary alkyl, cyclopropylmethyl, allyl, ethylthiomethyl, 2-fluoroethyl, or propargyl; X is bromo, iodo, chloro, methyl, trifluoromethyl, or methoxy; and or in which R2 is hydrogen, acetyl, or acetoxymethyl and R3 is C1-C3 alkyl; which are useful analgesic agents, are described herein.
Patent IE-59475-B1 (IE)
Title: Furo-(3,4-c)-pyridine derivatives
IPC: A61K31/435
Filed: 1985-10-25
Abstract: This invention relates to new 1,3-dihydro-6-[1-cyano-1-isopropyl-N-phenethyl-N-methyl- omega -aminoalkyl]-7-hydroxy-furo-(3,4-c)-pyridine derivatives of the general formula  wherein each of A1 and A2 independently represents various substituents and to pharmaceutically acceptable salts of said derivatives, to a process for the preparation of the same, comprising reacting, in stoichiometric proportions, at 15 DEG -65 DEG C., in dimethylsulphoxide, a 6-(1-cyano-2-methyl-propyl)-7-hydroxy-furo-(3,4-c)-pyridine derivative with the appropriate N-methyl-N-phenethyl- omega -aminoalkyl choride and, finally, to a therapeutic composition of matter comprising as an essential ingredient therein any of said compounds in an amount effective to act as a calcium antagonist or a serotonin antagonist together with an appropriate diluent or carrier.
Patent IE-61176-B1 (IE)
Title: A closure assembly for a container
Inventor: POORE ALBERT CYRIL GLANVILLE
IPC: B65D55/02
Filed: 1987-10-20
Abstract: The invention relates to a closure assembly for a container. The closure assembly comprises a first cap portion (11) hingedly connected to a second cap portion (12) adapted to be positioned over the mouth of an associated container and including an aperture to permit dispensing from the container. The first cap portion is arranged so that in one position it overlies the aperture to close the container, and in another position is lifted clear of the aperture to open the container. The cap portions together include means so that they can be snapped together and their separation from a closed to an open position requires the exertion of a positive force by the user and the first cap portion includes at its periphery opposite its hinged connection with the second cap portion a lip (22) which co-operates with an inwardly displaceable section (42) of the second cap portion. The inwardly displaceable section includes at its upper edge face adjacent the lip a portion which is associated with an outermost lower edge of the lip when the two cap portions are in a closed position and raised above that lower lip edge so that on inward displacement of the said section the raised portion first offers resistance to displacement in its engagement with the lip edge and then, as displacement pressure is increased, forces the lip upwards. In that manner the snap action of the two cap portions can be overcome and the closure opened.
Patent IE-59211-B1 (IE)
Title: Process and device for press-forming sheet material having a small elongation
IPC: B21D22/10
Filed: 1986-12-03
Abstract: Process for press-forming sheet materials and in particular metal sheets on a double-action press of the type comprising a cushion (5) of an elastically yieldable material, the process comprising disposing the sheet on a support, applying a first outer slide (1) on the peripheral portion of the sheet (4), then applying a second central slide (10) on a central portion of the sheet, the process further comprising disposing the peripheral portion of the sheet on a lower blank holder (3) forming a tank for the cushion (5) and having an upper surface (6) for maintaining the sheet and located at a higher level than the level of the working surface (7) of the cushion (5), applying the first outer slide, which has a body (8) having a cross-section less than the lower blank holder (3) and includes on its periphery an upper blank holder (2) cooperative with the lower blank holder (3) for gripping the sheet (4), continuing the descent of the outer slide (1) against the cushion for turning up an edge portion (20) of the sheet and causing the flow of the mass of the cushion and deform the central portion of the sheet in such manner as to impart thereto an area substantially equal to the area of the finished part to be obtained, then displacing the central slide (10) so as to shape the angular volumes and the central portion of the sheet by a final flow of the cushion. The invention also provides a press-forming device of the double-action press type. Application in the press-forming of sheets of large size and small elongation.
Patent JP-3022539-B1 (JP)
Title: 文書検索装置
IPC: G06F17/30
Filed: 1999-01-07
Granted: 2000-03-21
Abstract: 【要約】
【課題】  欧米語に限らずたとえば日本語のように単語 の区切りが明確でない文書に対しても、比較的小さな容 量のインデックスを用いて文書の全文検索を実行するこ とができる文書検索装置を提供する。
【解決手段】  インデックス１に文書に含まれている全 ての単語について重複を省き、これら単語とともに文書 中で当該単語に隣接している単語に関する情報を付加し て格納しておき、検索時には、複数の単語とこれら単語 の並びとを含む検索条件に基づいて、検索手段４、５ が、インデックス１に格納された複数の単語と検索条件 との合致を判定して、文書が検索条件に合致するか否か を判定する。また、インデックス１から単語列を復元し て、該当する文書を復元出力する。
Patent LU-101030-B1 (LU)
Title: Kupfersparwicklung
Inventor: KLOSE ULRICH
IPC: H02K15/085
Filed: 2018-12-12
Granted: 2020-06-12
Abstract: Kupfersparwicklung TITEL: Kupfersparwickiung ZUSAMMENFASSUNG Die Erfindung besteht darin, dass die Erregerwicklungen der Drehstrommaschine aus 2 komplementären Teilen zu einer Wicklung verbunden werden. Dadurch wird die benötigte Kupferdrahtlänge für die Ständerwicklungen der Drehstrommaschinen verkürzt. Durch diese beträchtliche Kupfereinsparung ermöglicht die Erfindung die Herstellung kostengünstigerer und wirksamerer Maschinen. Die Erfindung bezieht sich in erster Linie auf konventionelle Drehstrommaschinen mit verteilten Wicklungen. Beim Betrachten des Inneren dieser Maschinen, besonders bei Schnellläufern mit wenigen Polpaaren, fällt einem die Menge Kupferdraht auf, die sich auf beiden Seiten des Ständers ausbreitet und die die Herstellungskosten und den Wirkungsgrad negativ beeinflusst
Patent LU-102475-B1 (LU)
Title: Method and system for adjusting exposure parameter of airborne camera
Inventor: CHU BINGQUAN
IPC: H04N5/00
Filed: 2021-02-03
Granted: 2021-08-04
Abstract: The method comprises: acquiring a current environmental illumination value by a photometer; determining the environmental exposure value of the airborne camera by using the environmental corresponding relationship between the environmental illumination value and the environmental exposure value of the airborne camera according to the environmental illumination value; determining the internal exposure value of the airborne camera by using the preset corresponding relationship between the environmental exposure value and the internal exposure value of the airborne camera according to the environmental exposure value; determining the value of the exposure parameter of the airborne camera by using the exposure corresponding relationship between the internal exposure value and the exposure parameter of the airborne camera according to the internal exposure value; and adjusting the current exposure parameter of the airborne camera according to the value of the exposure parameter.
Patent LU-500291-B1 (LU)
Title: Akd/asa composite papermaking sizing agent and preparation method and application thereof
Inventor: YU DEHAI
IPC: D21H21/16
Filed: 2021-06-17
Granted: 2021-12-17
Abstract: The present invention provides a preparation method of an AKD/ASA composite emulsion,  including: mixing AKD oil with perfluorohexane, and performing uniform stirring to obtain AKD-P oil; mixing a montmorillonite aqueous dispersion with acetone, ammonia monohydrate and cetyltrimethylsiloxane, and performing uniform dispersion to obtain a mixed solution I;  adding perfluorooctyltriethoxysilane into the mixed solution I, and performing ultrasonic dispersion to obtain a mixed solution II; drying the mixed solution II to obtain modified MMT powder; mixing the modified MMT powder with ASA, adding the AKD-P oil for mixing after uniform dispersion, and performing ultrasonic emulsification to obtain an AKD-P/ASA emulsion; and mixing the AKD-P/ASA emulsion with a sodium dodecyl sulfonate aqueous solution, and performing ultrasonic emulsification to obtain the ASA/AKD composite emulsion.  Due to outer layer oil phase AKD coating, the emulsion avoids contact between ASA and a water phase, thus achieves the objective of avoiding ASA hydrolysis.
Patent LU-502032-B1 (LU)
Title: Method for reducing heavy metal cadmium content in mussel cooking liquor by ferrite method
Inventor: Tao Meijie
IPC: A47J37/12
Filed: 2022-05-06
Granted: 2022-11-03
Abstract: This invention provides method for reducing heavy metal cadmium content in mussel cooking liquor by ferrite method that comprises steps as followings: Adding 400 ~ 490 mg FeSO4 to every 70ml of mussel cooking liquid, then adjusting the pH to 8.0 ~ 9.0, and heat treatment was carried out at 80 ~ 90℃ for 30 5 minutes. According to this invention, the content of heavy metal cadmium in mussel cooking liquor can be effectively reduced only by using conventional and cheap FeSO4, and the process is simple and easy for industrial use.
Patent LU-504200-B1 (LU)
Title: Electric single beam suspension crane
Inventor: WANG YAHUI
IPC: B66C9/14
Filed: 2023-05-11
Granted: 2023-11-14
Abstract: The disclosure discloses an electric single beam suspension crane, comprising a crossbeam, in which the crossbeam is slidingly mounted with an electric hoist and a lead screw mechanism for driving the electric hoist to move, a suspension beam is fixedly connected with at both ends of the crossbeam and is placed in a guide rail, a pulley mechanism is provided inside the suspension beam, the pulley mechanism comprises a movable frame, the movable frame is slidingly connected to a top wall inside the suspension beam, a pulley is rotatably connected at each of front and rear ends of the movable frame at the bottom.
Patent LU-504585-B1 (LU)
Title: Photo-voltaic component cleaning control system
Inventor: YANG LUKAI
IPC: H02S40/10
Filed: 2023-06-27
Granted: 2024-01-09
Abstract: The present invention discloses a photo-voltaic component cleaning control system, it includes that a sliding rail is disposed on the edge of the photo-voltaic component; a dirt detection and identification unit, it is used to identify the dirt on the photo-voltaic component; a cleaning unit, it is used to clean the dirt on the photo-voltaic component; a control unit, it is used to control the cleaning unit to clean the dirt on the photo-voltaic component in different cleaning modes. The present invention accurately identifies the dirt on the photo-voltaic component through the dirt detection and identification unit, the cleaning unit is controlled by the control unit according to the characteristics of the dirt to select a cleaning mode consistent with the characteristics of the dirt to clean the dirt, at the same time, it reduces the waste of resources in the cleaning process, and the cleaning system has rich configuration.
Patent NO-303261-B1 (NO)
Inventor: SPARKES ALEC GRAHAM
IPC: A01G9/00
Filed: 1994-06-20
Abstract: PCT No. PCT/GB92/02356 Sec. 371 Date Sep. 29, 1994 Sec. 102(e) Date Sep. 29, 1994 PCT Filed Dec. 18, 1992 PCT Pub. No. WO93/12644 PCT Pub. Date Jul. 8, 1993.The present invention relates to the propagation and growing of plants, and particularly concerns an apparatus for growing large numbers of plants in a small area, with optimized use of available and artificial light, and to reduce the effect of plants competing for light.
Patent NO-307576-B1 (NO)
Inventor: AYERS PETER GRAVES
IPC: D21F11/00
Filed: 1995-02-23
Abstract: A secondary belt for papermaking. The belt has a framework of protuberances arranged in a semicontinuous pattern to provide a semicontinuous pattern of deflection conduits. The semicontinuous pattern is distinguished from the discrete and continuous patterns of the prior art. The protuberances may be generally parallel, or may provide individual cells within the deflection conduits between the protuberances. Also disclosed is the paper made on such a secondary belt. <IMAGE>
Patent NO-305799-B1 (NO)
Inventor: STARKE CARL INGEMAR
IPC: C12P17/12
Filed: 1995-12-05
Abstract: PCT No. PCT/SE94/00552 Sec. 371 Date Jul. 1, 1994 Sec. 102(e) Date Jul. 1, 1994 PCT Filed Jun. 8, 1994 PCT Pub. No. WO94/29274 PCT Pub. Date Dec. 22, 1994The present invention relates to novel quinoline derivatives of the formula   <IMAGE>   which inhibit exogenously or endogenously stimulated gastric acid secretion and thus can be used in the prevention and treatment of gastrointestinal inflammatory diseases.
Patent NO-314612-B1 (NO)
Inventor: PURITCH GEORGE S
IPC: A01N37/44
Filed: 1996-04-23
Abstract: An effective, readily ingested molluscicidal bait poison includes an inert mollusc bait and two active ingredient precursors. These precursors are edible and non-toxic to terrestrial molluscs when consumed alone. However, the composition which includes the two precursors is fatally toxic to terrestrial molluscs. One precursor is a simple iron compound, while the other precursor is selected from edetic acid, its hydroxyethyl derivatives and salts of these acids. In another embodiment a single active ingredient may replace the two precursors. This active ingredient may include ferric edetate and the ferric hydroxyethyl derivative of edetic acid.
Patent NO-308778-B1 (NO)
Inventor: WOLLENWEBER HORST-WERNER
IPC: C09K23/00
Filed: 1996-11-19
Abstract: PCT No. PCT/EP95/02260 Sec. 371 Date Dec. 20, 1996 Sec. 102(e) Date Dec. 20, 1996 PCT Filed Jun. 12, 1995 PCT Pub. No. WO95/35143 PCT Pub. Date Dec. 28, 1995An aqueous fatty alcohol dispersion containing: (a) 5% to 40% by weight of a Cl10-C28 fatty alcohol; (b) 0.5% to 5% by weight of anionic interfacially active compounds; (c) 0.5% to 5% by weight of nonionic interfacially active compounds comprising the reaction products of ethylene oxide with alkane-1,2-diols containing 6 to 18 carbon atoms, and (d) the balance, water. The dispersion is useful as an antifoam agent.
Patent NO-309655-B1 (NO)
Inventor: GUILLONNEAU CLAUDE
IPC: A61K31/435
Filed: 1997-12-29
Abstract: Ellipticine derivatives of formula (I), their optical isomers, N-oxides and salts are new. R1 = 1-6C alkyl; R2, R5, R6 = H or 1-6C alkyl; R3 = H, 3-8C cycloalkyl, 1-20C alkyl, 2-20C alkenyl, 4-20C alkadienyl (all optionally substituted by 1-3 of 1-6C alkoxy, carboxy, 1-6C alkoxycarbonyl, benzyloxycarbonyl, mono-, di- and tricyclic aryl, or heteroaryl containing O, N, or S), mono-, di- or tricyclic aryl (optionally totally or partially hydrogenated), 5-6-membered heterocycle containing 1-3 O, N or S atoms (all optionally substituted by 1-3 of 1-6C alkoxycarbonyl, benzyloxycarbonyl, carboxy, 1-6C alkyl (optionally substituted by 1 or 2 phenyl groups), 1-6C alkoxy or carboxy), amino, mono- or disubstituted amino (substituted by one or two 1-6C alkyl (optionally substituted by carboxy, 1-6C alkoxycarbonyl, or benzyloxycarbonyl), mono- or bicyclic aryl or heteroaryl (optionally partially or totally hydrogenated and substituted by one or two carboxy, 1-6C alkoxycarbonyl or benzyloxycarbonyl)), amino forming part of a 5-6-membered ring which may contain a second heteroatom selected from O, N and S and optionally substituted by one or two of 1-6C alkyl, benzhydryl, 1-6C alkoxy, 1-6C alkoxycarbonyl, benzyloxycarbonyl, carboxy or piperidino; R4 = H, 1-6C alkyl (optionally substituted by 1-6C alkylamino) or 2-6C alkenyl; R7,R8 = H, 1-6C alkyl or 2-6C alkenyl; or NR7R8 = heterocycle which may contain a second heteroatom selected from O, N, and S; or R7+R6 = ethylene or propylene bridge; and A = 1-10C saturated or unsaturated hydrocarbon chain.
Patent AT-506001-B1 (AT)
Title: Abgasturbine für einen abgasturbolader
Inventor: PREVEDEL KURT ING
IPC: F01D17/12
Filed: 2009-01-29
Granted: 2010-08-15
Abstract: Die Erfindung betrifft eine Abgasturbine (1) für einen Abgasturbolader einer Brennkraftmaschine, mit einem Turbinengehäuse (2), welches eine Zulaufspirale (3) für ein Laufrad (5) ausbildet, wobei die Zulaufspirale (3) einen Eintritt (4) des Laufrades (5) umgibt, wobei das Laufrad (5) sich zwischen dem Eintritt (4) und einem Austritt (6) in einem Laufschaufelraum (7) erstreckende Laufschaufeln (8) aufweist, wobei die Abgasturbine (1) zumindest einen internen Umgehungsströ-mungsweg (9, 9a) mit veränderbarem Querschnitt für Abgas aufweist, welcher stromabwärts des Austrittes (6) wieder in den Abgasstrang einmündet. Um auf möglichst einfache Weise bei kleinkonzipierten Abgasturbinen ein Stopfen bei hohen Drehzahlen zu vermeiden, ist vorgesehen, dass der interne Umgehungsströmungsweg (9, 9a) stromabwärts des Eintrittes (4) des Laufrades (5) vom Laufschaufelraum (7) ausgeht.
Patent AT-521642-B1 (AT)
Title: Verfahren zur Herstellung eines Polsters
Inventor: ANDREAS BALDINGER
IPC: B29L31/58
Filed: 2018-09-13
Granted: 2021-08-15
Abstract: Verfahren zur Herstellung eines Polsters (1) mit einer Hülle (2) aus einem luftdichten Hüllenmaterial und einem in der Hülle (2) angeordneten, nachgiebigen, polydirektional luftdurchlässigen Füllkörper (3), der mit der Hülle (2) stofflich verbunden ist, wobei das Verfahren zumindest die folgenden Schritte umfasst: Beschichten eines ersten Formnests (6') eines Formwerkzeugs (6) mit einem aushärtbaren, fließ- und/oder sprühfähigen Kunststoffmaterial zur Ausbildung einer ersten Hüllenschale ( 2' ) ' Beschichten eines zweiten Formnests (6'') des Formwerkzeugs (6) mit dem aushärtbaren, fließ- und/oder sprühfähigen Kunststoffmaterial zur Ausbildung einer zweiten Hüllenschale (2''), Einlegen eines vorproduzierten Füllkörpers (3) in die im ersten Formnest (6') befindliche erste Hüllenschale (2') Zusammenfügen der im ersten Formnest (6') und im zweiten Formnest (6'') befindlichen ersten und zweiten Hüllenschalen (2', 2'') vor dem Aushärten oder Ausreagieren des Kunststoffmaterials.
Patent AT-515680-B1 (AT)
Title: Vorrichtung, Anlage und Verfahren zur Herstellung einer mit Granulat vermengten Masse
Inventor: HAAS JOHANNES
IPC: A23G9/46
Filed: 2014-04-30
Granted: 2015-11-15
Abstract: Vorrichtung, Anlage und Verfahren zur Zuführung von Granulat (1), insbesondere essbarem Granulat wie Nussstücke, in eine unter Überdruck stehende pumpfähige Masse (2), insbesondere eine begaste essbare Creme wie eine Schokoladencreme.
Patent AT-506764-B1 (AT)
IPC: B26D7/18
Filed: 2008-04-21
Granted: 2013-01-15
Abstract: The apparatus has a raising device (4) displaceable relative to a cutting table (1) receiving a web (5). A lifting device (14) is provided at a distance above the table. The lifting device has a receiver adjusted to the length of a boundary section (16) of a cutting (6) facing the raising device. The receiver holds the received boundary section in a transfer position lifted off from the table. The raising device is displaceable between the lifting device and the web resting on the table. A tape (10) is applied to a bottom side of a support (12) comprising ferromagnetic material.
Patent AT-508441-B1 (AT)
Title: Verfahren zum prüfen einer chipkarte durch simulation von angriffen
IPC: G06F21/00
Filed: 2010-06-08
Granted: 2016-02-15
Abstract: Verfahren zum Prüfen einer Chipkarte mit Angriffen auf das Betriebssystem oder die Applikationen bei der Herstellung der Chipkarte, wobei ein hardwaremäßiger Angriff auf die Chipkarte dadurch simuliert wird, dass stattdessen mit einer Angriffssoftware (18) in den Programmablauf des Betriebssystems oder der Applikationen über die Schnittstelle (16) eingegriffen wird und gezielt bestimmte Daten entsprechend einem hardwaremäßigen Angriff verändert werden, wobei Betriebssystem oder die Applikationen auf einem durch einen Chip-Simulator (17) simulierten Chip (15) ausgeführt werden, und wobei durch Variation der Anzahl von veränderten Speicher-Bits bzw. Bytes und der geschriebenen Werte unterschiedliche Angriffsparameter, wie insbesondere Fokussierung, Energie, Wellenlänge der eingestrahlten elektromagnetischen Wellen, Angriff durch direkte Kontaktierung mit Micro-Probes, Angriff durch ionisierende Strahlung, simuliert werden.
Patent BR-0007678-B1 (BR)
Inventor: ORRMAN JAAKKO
IPC: B66B11/08
Filed: 2000-01-25
Abstract: In a traction sheave elevator, the elevator car is suspended on hoisting ropes by means of a diverting pulley. The diverting pulley used to suspend the elevator car on the hoisting ropes is mounted on one side of the elevator car. <IMAGE>
Patent BR-0110162-B1 (BR)
Inventor: AUGTHUN MICHAEL
IPC: A61C13/34
Filed: 2001-04-05
Abstract: A post-shaped element for determining the spatial position of an implant (10), or the opening cross-section of an artificial indentation located in a tooth or in the stroma of a human or animal body, relative to the tissue structures surrounding it, can be introduced with a receiving section (26A) into an adapted receiving recess (10) in the implant (1) or in the artificial indentation, be affixed therein to be torsion resistant and able to again be removed there-from. In a connecting position the post-shaped element protrudes with a cantilever section (26K) beyond the opening cross-section of the receiving recess (10) or artificial indentation. To be able to easily remove the post-shaped element embedded in the impression mass, even in the case of a slanted position of the implant (1) or the longitudinal axis of the artificial indentation in relation to the surrounding tissue structures, it is suggested to ensure that the post-shaped element consists of a bottom portion (24), which can be torsion-resistantly fixated in the receiving recess (10) or the artificial indentation, and a top portion (25), which can be inserted torsion-resistantly in the bottom portion (24) or placed on said portion, wherein the top portion (25), proceeding from the connecting position of the post-shaped element, can be removed in a linear fashion from the bottom portion (24) in various directions.
Patent BR-0111045-B1 (BR)
Inventor: NYGAARD EERO
IPC: B23B51/00
Filed: 2001-05-23
Abstract: A drill bit for the working of metal has a center pilot tip that transforms into straight cutting edges extending towards the outer periphery of the bit. Each cutting edge forms a cutting angle of 1-20° with a reference plane oriented perpendicular to of the drill axis. Each a cutting edge is inclined in a radially inward and axially rearward direction toward the drill axis. The center tip forms a pilot point angle of 90±2° and a has base that takes up 23-45 percent of the total diameter of the cutting section of the drill bit. The tip has a tip angle of 90±10°.