baber/WOPTO huggingface dataset:
Patent WO-0137592-A1 (WO)
Title: Verfahren und system zur ausarbeitung und übermittlung von sms-meldungen in einem mobilfunknetz
Inventor: MARTSCHITSCH ANDREAS
IPC: H04W88/18
Filed: 1999-11-17
Abstract: Verfahren zur Ausarbeitung und Übermittlung von SMS-Meldungen (7) in einem Mobilfunknetz (3, 4), in welchem ein Mobilfunkteilnehmer mit seinem Mobilgerät (1) eine USSD-Meldung (2) aussendet, die einen Dienstcode (21) zur Identifizierung eines SMS-Sendedienstes sowie eine Identifizierung des Empfängers (25) und ein Textfeld (23) umfasst. Diese USSD-Meldung wird an einen USSD-Handler (50) weitergeleitet. Ein mit diesem USSD-Handler verbundenes Gateway (52) konvertiert die benannte USSD-Meldung in mindestens eine SMS-Meldung (7). Die benannte SMS-Meldung wird über eine Kurznachrichtenzentrale (6) an den benannten Empfänger weitergeleitet.
Patent WO-0183256-A1 (WO)
Title: Magnetic levitation vehicle
Inventor: WANG GUANGYU
IPC: B60L13/10
Filed: 2001-03-30
Abstract: A new type magnetic levitation vehicle has a lift system which consists of the lift guidways mounted on the both sides of a railway and the permanent-magnet lift bodies under the vehicle frame. It is the lift force between the lift guidway and permanent-magnet lift body that makes vehicle body levitated. The propulsion system may consist of an air propeller driven by a super-light type air engine, or may consist of driven wheels and driving motor trailed after the magnetic levitation vehicle and on the railway between the rails of the magnetic levitation vehicle, especially, may consist of the lift guidways and propulsion 'chip' inserted in the lift guidways.
Patent WO-02088497-A1 (WO)
Title: Serrure a vis
Inventor: HUANG YUNG-CHEN
IPC: E05B67/24
Filed: 2001-04-26
Abstract: L'invention porte sur une serrure à vis présentant un noyau (10) à l'intérieur du corps (20), un trou de serrure (11) en forme de fourche pratiqué à l'intérieur du noyau dans un sens axial et quelques broches (21, 12) ; une extrémité avant de la clé (40) correspondant au trou de serrure (11) et aux broches (21, 12) est conçue sous forme de tige (42) de vis de type fourche dotée d'une pluralité de dents (43). Lorsque la clé (40) est vissée dans le trou de serrure (11) du noyau (10), chacune des dents (43) peut soulever une broche en position déverrouillée.
Patent CU-22391-A1 (CU)
Inventor: NARANJO CESPEDES MARIA ELENA
IPC: C09J161/24
Filed: 1990-07-23
Abstract: LA INVENCION SE RELACIONA CON LA RAMA QUIMICA Y EN PARTICULAR CON UN                                PROCEDIMIENTO Y UNA COMPOSICION ADHESIVA PARA SU EMPLEO EN DIFERENTES                               PROCESOS DE ENCOLADO PARA UNIR SUPERFICIES. EL OBJETIVO TECNICO DE LA                               INVENCION ES OBTENER UN ADHESIVO QUE PERMITA EL ENCOLADO DE LAS SUPERFICIES                         TRATADAS, ASI COMO MAYOR CALIDAD DE LA UNION ADHESIVA, REDUCCION DEL                                CONSUMO DE ENCOLANTE SIN LA NECESIDAD DE UTILIZAR RELLENOS. SE MEZCLA                               CARBOXIMETIL CELULOSA CON RESINA UREA-FORMALDEHIDO A TEMPERATURA AMBIENTE,                          SE AGITA POR UN TIEMPO DE 5-30 MIN Y SE LE AÑADE CLORURO DE AMONIO. EL                              ADHESIVO ESTA FORMADO POR UNA MEZCLA QUE CONTIENE CARBOXIMETIL CELULOSA EN                          UNA PROPORCION DE 0,1-1,0%, 100 PARTES DE RESINA UREA FORMALDEHIDO Y                                CATALIZADOR DE CLORURO DE AMONIO EN UN RANGO DE 0,5-1,5 %. LA COMPOSICION                           ADHESIVA SE PUEDE UTILIZAR EN CUALQUIER INDUSTRIA DONDE SE REQUIERA LA                              UNION DE SUPERFICIES EN SUSTITUCION DE LAS MEZCLAS TRADICIONALES DE UREA-                           FORMALDEHIDO U OTRAS SIMILARES. EN EL ENCHAPADO DE MADERA NATUR                                     AL Y ARTIFICIAL, PRODUCCION DE PLYWOOD Y OTRAS UNIONES.\!
Patent WO-0054121-A1 (WO)
Title: Disjoncteur electronique evitant les changements indesirables de temperatures affectant les consommateurs electriquement connectes
Inventor: DVORAK PAVEL
IPC: H02H3/06
Filed: 2000-03-01
Abstract: L'invention concerne un disjoncteur électronique évitant les changements indésirables de températures affectant les consommateurs électriquement connectés équipé d'un commutateur à capacité de coupure élevée (HICS) connecté entre l'alimentation (S) en électricité et le consommateur (C) et connecté à un circuit d'évaluation (EC) branché à un circuit de prise de la température, notamment un thermosenseur (TS), connecté à un consommateur (C) d'une façon thermiquement conductrice. Un thermorégulateur (TR) est connecté entre le consommateur (C) et l'alimentation (S).
Patent WO-0106508-A1 (WO)
Title: Verfahren zur einstellung einer drehzahl
Inventor: POTRYKUS SVEN
IPC: G11B7/00
Filed: 2000-07-14
Abstract: Es wird ein Verfahren zur Einstellung einer Drehzahl für ein rotatorisches Auslesen von auf einem plattenförmigen Speichermedium (1) abgespeicherten Nutzdaten in einem Abspielgerät (10) vorgeschlagen, das die Ausnutzung einer maximal möglichen Datenübertragungsgeschwindigkeit bei konstanter Drehzahl ermöglicht. Die Nutzdaten sind dabei näherungsweise in Datenspuren abgespeichert, die konzentrisch zu einer Rotationsachse (5) des plattenförmigen Speichermediums (1) angeordnet sind. Es wird eine äußerste, von der Rotationsachse (5) abgewandte und mit Nutzdaten beschriebene Datenspur (15) des plattenförmigen Speichermediums (1) ermittelt. Es wird ein Wert für die in der äußersten Datenspur (15) gespeicherte Datenmenge ermittelt. Es wird die Drehzahl in Abhängigkeit der ermittelten Datenmenge und einer Datentransferrate eingestellt, wobei die Datentransferrate eine maximale Datenmenge angibt, die pro Zeiteinheit vom Abspielgerät (10) auslesbar ist, so daß die in der äußersten Datenspur (15) abgespeicherten Nutzdaten mit der Datentransferrate beim Abspielen des plattenförmigen Speichermediums (1) auslesbar sind. Es wird die Drehzahl beim Abspielen des plattenförmigen Speichermediums (1) konstant gehalten.
Patent WO-0108318-A1 (WO)
Title: Funksende- und -empfangsgerät
Inventor: HOFMANN LUDWIG
IPC: H04B1/525
Filed: 2000-07-19
Abstract: Funksende- und -empfangsgerät (1), insbesondere Mobilfunk-Endgerät mit einer Sendeendstufe (3), einem Empfangsteil (9), einer der Sendeendstufe und dem Empfangsteil gemeinsam zugeordneten Sende-/Empfangsantenne (7), einem Sendeband-Durchlaßfilter (5) sowie einem Empfangsband-Durchlaßfilter (11), mit einem zwischen dem Ausgang der Sendeendstufe und dem Eingang des Empfangsteils geschalteten Kompensationsglied (13) zur Kompensation eines auf das Empfangsteil übersprechenden Sendesignalanteils.
Patent WO-0184018-A1 (WO)
Title: Schaltvorrichtung für ein kraftfahrzeuggetriebe
Inventor: MEYER JOERG
IPC: B60R25/00
Filed: 2001-05-03
Abstract: Die Erfindung beschreibt eine Schaltvorrichtung für ein Kraftfahrzeuggetriebe, mit: einem Wählhebel (1) zur Anwahl unterschiedlicher Schaltstellungen (P, R, N, D, 3, 2, ...), der um mindestens eine Achse (2) schwenkbar in einem Gehäuse (3) gelagert ist, ein ersten Sperrglied (4) und mindestens einem weiteren Sperrglied (5), die die Bewegung des Wählhebels (1) in unterschiedlichen Schaltstellungen blockieren, einem Stellglied (6), sowie einem an dem Wählhebel (1) vorhandenen Sperrelement (7), in das in Abhängigkeit vorgegebener Parameter in den zu sperrenden Schaltstellungen des Wählhebels jeweils eines der Sperrglieder (4, 5) eingreift. Die Sperrglieder (4, 5) sind als um je eine Schwenkachse (8, 9) schwenkbar an dem Gehäuse (3) angebrachte Winkelhebel ausgeführt.
Patent WO-03048748-A1 (WO)
Title: Regensensor, insbesondere für ein kraftfahrzeug
Inventor: SAUTTER HELMUT
IPC: G01W1/14
Filed: 2002-09-17
Abstract: Es wird ein Regensensor für ein Kraftfahrzeug vorgeschlagen, mit einem Strahlung abgebenden Sender (16), einem Empfänger (18) and einem holographisch ausgebildeten diffraktiven Element (22a, 22b) das eine liniengitterartige Struktur aufweist.
Patent WO-2004048829-A1 (WO)
Title: Gehäuseflanscheinheit
Inventor: ANSCHICKS ROLF
IPC: F16K27/02
Filed: 2003-10-02
Abstract: Die Gehäuseflanscheinheit besteht aus einem Gehäuseflansch (1), in dem senkrecht zur Längsachse des Gehäuseflansches (1) eine Klappenwelle (2) mit einer mittig angeordneten Klappe (3) in einem ersten Lager (1′) und einem zweiten Lager (1′′) drehbar gelagert ist. Sie ist dadurch gekennzeichnet, dass der Gehäuseflansch (1) aus Rotguss besteht und eine Wanddicke g von 2 bis 4 mm aufweist. Gegenstand ist ferner die Verwendung der Gehäuseflanscheinheit als Verschlusseinheit für einen Gaskühler für Abgas.
Patent DE-1806960-A1 (DE)
Title: Porous cast articles from acrylic and other polymers
Inventor: GUENTHER WILL DR
IPC: B28B1/26
Filed: 1968-11-05
Abstract: CURABLE MOULDING MATERIAL FOR PRODUCTION OF POROUS SOLID ARTICLES. N1-. consists of (I) 10-60 pts. wt. water, (II) (100-I/10) to (100-I/10) pst. wt. of a water insoluble powdered (co) polymer, which at least swells in (III), (III) 100-(I+II) pts. wt. polymerisable liquid monomer with a terminal CH2=C- group, which can be emulsified in water, (IV) water soluble wetting agent, which may be added directly or be present in component (II), (V) a small amount of a nonionic surface active agents as water-in-oil emulsifier, and (VI) one or more polymerisation catalysts and/or accelerators.
Patent DE-1905094-A1 (DE)
Title: Plastic container with fluorinated surface - from hydrocarbon fuels, esp. petrol
Inventor: LOUIS SCOTLAND JOHN
IPC: B05D5/00
Filed: 1969-02-01
Abstract: Thick walled container for petrol with a wall thickness of more than 1 mm. is produced from an ethylene (co)polymer, optimally contg. up to 20% wt. commomer with a density of 0.935-0.965, and a melt index of 0.05-5.0, while at least one surface of the container is fluorinated to a concn. of 0.01-30 microgram fluorine per cm2 surface. The inner surface of the container is pref. fluorinated to a concn. of 1.0-10.0 micrograms fluorine per cm2 surface. The container pref. has a wall thickness of 3mm. Fluorisation is pref. carried out at 15-25 deg.C for 1-20mins. with fluorine.
Patent DE-1905590-A1 (DE)
Title: Polyamide imide contng condensn prods
Inventor: KRUEGER ALFRED
IPC: C08G73/14
Filed: 1969-02-05
Abstract: The products result from reaction of (I) aminotriazine-aldehyde condensates or derivs. thereof, (II) (hetero)cyclic carboxylic acid or their derivs. having 2 or more carboxyl groups in the molecule and (III) di- or poly-basic amines.
Patent DE-1953295-A1 (DE)
Title: Continuous centrifuge
Inventor: KLAUS-DIETER SCHREITER DIPL-IN
IPC: B04B1/20
Filed: 1969-10-23
Abstract: Classifier has const. speed differential drive between the drum and the discharge worm screw and is provided with a known hydro-mechanical drive which is disposed between the bearings of the drum and mounted either in the hollow worm screw or hollow shaft of the drum, whereby the housing of the drive is interconnected either with the drum or the hollow worm screw and the output shaft is interconnected either with the hollow worm screw or with the drum.
Patent DE-2011566-A1 (DE)
Title: Adjustable core for moulding reinforced synt
IPC: B29C33/48
Filed: 1970-03-11
Abstract: The core consists of a series of radial segments which incorporate 'U' shaped rails. The latter interlock with corresponding profiles on the end of adjustable spoke-like arms attached to a centre shaft. The core can be adjusted for length by adding or taking away segments, and the diameter can be altered by adjusting the angle of the spokes. The whole can be rotated in order to wind on the reinforcing fibre which is then saturated in resin. Reducing the core diameter facilitates release.
Patent DE-2021799-A1 (DE)
Title: Miniaturised electricity source
Inventor: ADLER KARL
IPC: G21G4/04
Filed: 1970-05-04
Abstract: Miniaturised electrical supply has a radio-active beta-radiation source, a collecting electrode for collecting the radiation and output electrodes formed by the collecting electrode and a connection device attached to the radiation source. The radiation source comprises tritium, chemically bound to a stable compound of which there is one layer one one surface of the carrier and the space between the radiation source. The collecting electrode conains a layer of a solid dielectric of such thickness and density that the beta-radiation, with an energy of maximum 18 ke V is let through. It is used for the electric insulation of the radiation source of the collecting electrode.
Patent DE-2055017-A1 (DE)
Title: Perforations in tubular thermoplastic film - by rotating spiked rollers inside film after extrusion
IPC: B29C48/10
Filed: 1970-11-09
Abstract: During the cooling phase, while the tubular film is extended under the influence of an air blower, the spiked rollers inside the film produce holes in the film, the rollers being adjustable for tubing diameter and the desired perforation zone. Material for container bags for granular products fed in under compressed air, the perforations allowing escape of the air so that filled bags more easily stored.
Patent DE-2100115-A1 (DE)
Title: Highly chrome-alloyed steel prodn - by refining under solid slag
IPC: C21C5/32
Filed: 1971-01-02
Abstract: Additives promoting the formation of a solid slag, such as chrome ores and/or magnesite are introduced and the refining is carried out at a nearly maximal decarbonisation speed, whereby loss of Cr by burning is considerably reduced.
Patent DE-2110922-A1 (DE)
Title: Liquid steel sampler - with provision for degassing
Inventor: KUENZER ROLF
IPC: G01N1/12
Filed: 1971-03-08
Abstract: The steel sampling device is made from a refractory material and includes means for reducing gas evolution in the sampled steel melt. Pref. this is done by an Al-rod which is dissolved by the steel on entering the sampling cavity, and absorbs the gases from it. The sampling device yields samples suitable for chemical and spectrographical analysis.
Patent DE-2143775-A1 (DE)
Title: Vapour phase yarn heaters - restricted flow from jacket to common header scavenges low boiling, gaseous impurities
Inventor: KODAIRA NOBUHISA
IPC: D02J13/00
Filed: 1971-09-01
Abstract: Yarn heaters connected in a row to a common evaporator and a common header pipe running along the processing machine, have a flow restrictor in their connections to the header which removes low boiling vapours and gaseous impurities from the vapour heating medium to improve uniformity of temp. distribution.
Patent DE-2157930-A1 (DE)
Title: Sewing gripper registering rail - providing accurate seaming of foamed plastics materials
Inventor: HAUER KARL
IPC: D05B81/00
Filed: 1971-11-23
Abstract: Registering rail attached to the sewing needle gripper permitting accurate seaming of foamed plastics materials, jersey fabrics or slide fasteners is formed by a strip approx. 20 mm wide, the strip being formed of a material having a low coefft. of friction and provided at its upper surface with a longitudinally extending rebate which serves as a seam forming guide edge.
Patent DE-2158782-A1 (DE)
Title: Extruded foamed plastics prodn - with addn of fine filler material during passage through nozzle to rigidify foam
Inventor: RAUSING ANDERS RUBEN
IPC: B29B7/90
Filed: 1971-11-26
Abstract: Extruded foam, e.g. polystyrene or polyethylene, sheet material used for packaging or structural purposes is given greater rigidity by adding to the foam just prior to or during passage through the extrusion nozzle uniformly distributed fine pulverulent material, such as gypsum opt. mixed with steam.
Patent DE-2206677-A1 (DE)
Title: Disodium salt of tetrachlorobispenol a prepn - in gter -immiscible solvent
Inventor: VERNALEKEN HUGO DR
IPC: C07C39/44
Filed: 1972-02-11
Abstract: High purity aq. di-sodium salt solns. of 3,3',5,5'-tetrachloro-4,4'-dihydroxyldiphenylpropane-2,2 are obtd. by treating solns. of the tetrachlorobisphenol A in an inert, water-immiscible solvent with aq. NaOH or a mixt of aq. NaOH and aq. Na salt soln. causing the crystallisation of the di-Na salt, which is sepd. from the mother liquor and dissolved in H2O. The salts are used in the prepn. of high temp. stable and difficulty inflammable aromatic polyesters or polycarbonates by the method of phase boundary surface condensation.
Patent DE-2208946-A1 (DE)
Title: Fodder compacting press - with automatic control of moisture content and of pressure
Inventor: WIENEKE FRANZ PROF DR ING
IPC: A23K40/20
Filed: 1972-02-25
Abstract: Compacted animal folder is produced by pressing the chaff together while its moisture content is maintained automatically at a prescribed level. The moisture content is measured during the compacting process by establishing the electrical conductivity or the dielectric constant. If too low, atomized water is added; if too high, a heater is operated.
Patent DE-2251435-A1 (DE)
Title: Plastic mouldings - with complicated cavities produced with low-melting metal alloy moulding cores
Inventor: LIECHTI FRITZ DIPL ING CHEM DR
IPC: B29C33/52
Filed: 1972-10-20
Abstract: Mouldings are made by placing moulding cores, consisting at least partly of low-melting alloys of Gp. IIB, IIIB, IVB or VB metals, into the external mould, and removing the cores by heating after moulding the plastic, e.g. by extrusion, injection, casting, sintering or polymsn.
Patent DE-2261397-A1 (DE)
Title: Soluble polyazo dyes prepd - from tetra zotised diamino diphenyl sulphide, for textiles and leather
Inventor: HOLLIGER HERBERT
IPC: C09B35/46
Filed: 1972-12-15
Abstract: The dyes are of formula (where Z is a substd. aryl gp. R is OH or NH2, m is 1 or 2 and n is 1 or 2. Rings Z1-3 may be further substd., but not rings B or D) and they are prepd by diazotising aminoazo cpds and coupling with amines of formula The dyes are suitable for use on textile eg. wool, silk, nylon, cotton and esp. on leather, giving mainly black shades. They are suitable alternatives to dyes prod. from carcinogenic benzidine.
Patent DE-2265080-A1 (DE)
Title: Traversing tool post on machine tool - has bed and sliding frame enclosed with tool carrier protruding through slot
Inventor: ZILIO GIAMPIERO
IPC: B05B13/04
Filed: 1972-01-31
Abstract: The traversing tool post on a machine has a fixed bed and a sliding frame mounted to the bed. The sliding frame is powered by a motor driven belt through a drive pulley and coupling at one end of the b ed and a free running pulley at the other end. A balance weight, to balance the tool post weight, is connected to the opposite side of the belt. The arrangement has an enclosure of the bed and sliding frame. The tool carrier protrudes through a slot in the enclosure and is mounted securely to the sliding frame. A belt seals the slot in the opening.
Patent DE-2265300-A1 (DE)
Title: Sealing strip adjuster with reversing mechanism
IPC: E06B3/46
Filed: 1972-02-09
Abstract: No further information has been published for this application.
Patent DE-2303129-A1 (DE)
Title: Fabric fluid treatment equipment - with fluid level in U-shaped treatment trough below axis of paddle drum
Inventor: BECKER ARNO
IPC: D06B3/16
Filed: 1973-01-23
Abstract: The paddle drum is rotated under sensor control so that it is brought to rest with the paddle arms in the horizontal position, for fabric to be fed in and folded into a stack clear of the fluid level, entering the treatment fluid when the drum is rotated. The purpose is to ensure that the fabric is free of tension before entering the treatment fluid to control the shrinkage and the fabric:fluid vol. ratio.
Patent DE-2333681-A1 (DE)
Title: Sound and cine synchronisation - has electronic counter to address suitable positions on film and store addresses on tape
Inventor: GIGGE REINHARD
IPC: G03B31/00
Filed: 1973-07-03
Abstract: The cine film is run to the indexing points and stopped. The electronic counter monitors the sprocket holes, or other suitable identifying marks on the film and stores the address numbers of the indexing points on the tape. The tape recorder is then started at these points during projection, and stopped at the end of each sound sequence. The electronic counter also operates backwards when the film is rewound so that the synchronisation is maintained when a sequence is rewound.
Patent DE-2340660-A1 (DE)
Title: Washing machine tumble drum transporting lock - formed by quick release bars removable externally after machine transport
IPC: A47L/
Filed: 1973-08-10
Abstract: The lock, which after transport can be readily removed from outside the machine, comprises a pair of longitudinally fluted bars extending diagonally on opposite sides of the drum one end being located at the front of the machine floor and the other end being bolted on at the upper end of the rear wall, each bar being passed through a lock on the sides of the drum and each lock including a pin carried by a leaf spring and passed through a hole in the bar. Pin is disengaged for removal of the lock by a further bar extending parallel to the first bar and provided at its end opposite the pin with a bead whose thickness corresponds to the length of the pin.
Patent DE-2342236-A1 (DE)
Title: Alpha-aluminium oxide monohydrate - having specific characteristics regarding bulk density, specific surface, cumulative pore volume and pore dia distrib-ution
Inventor: ROYER DENNIS JACK
IPC: C01F7/02
Filed: 1973-08-21
Abstract: Alpha-Al oxide monohydrate having (a) 641-961 (801-881) kg/m3 bulk density (b) 100-250 (175-225) esp. 200-225 m2/g. specific surface and (c) a 0.3-0.6 (0.3-0.35)cm3/g. cumulative pore vol. at 0-10000 angstroms pore dia. where (d) 75-100 (75-90) esp. 85-95% of cumulative pore vol. is based on pores having 30-120 (40-65) esp. 50-65 angstroms dia. is useful for prodn. of catalysts, esp. for hydrodesulphurisation, catalyst supports, molecular seives, e.g. for virus sepn. and gel-permeation agents. It is prepd. by mixing 100 pts. dispersible alpha-Al oxide monohydrate with 30-3000 (200-400) pts. water and 0.3-40 (20-40) pts. acid, i.e. an inorg. or a monobasic aliphatic 1-3C carboxylic or a 2-3C halogenated carboxylic acid, esp. HNO3 and drying.
Patent DE-2345440-A1 (DE)
Title: Operation of I.C. engines with gaseous fuel - produced by steam reforming a liq. hydrocarbon in situ.
Inventor: BARON GERHARD DIPL-ING DR
IPC: F02M27/02
Filed: 1973-09-08
Abstract: In a process for supplying and operating an IC engine with a gaseous fuel, a largely S-free hydrocarbon with an end b. p. of =300 degrees C is evapd. and mixed with steam; the mixt. is catalytically converted at 350-400 degrees C to form a CH4-rich gas; and this gas is supplied to the IC engine and ignited in the presence of O2. The system can be used to operate 2- or 4-stroke-engines in motor vehicles. Emission of pollutants (CO, unburnt hydrocarbons, NOx, PbO) is eliminated or made negligible. High-paraffin fuels can be used, without addition of antiknock agents.
Patent DE-2354229-A1 (DE)
Title: Method of boring holes in anchor studs - uses pivoting blade on drill bit to cut conical section passage
Inventor: KESSLER JUERGEN
IPC: B23B51/00
Filed: 1973-10-30
Abstract: Boring of location holes intended for wall fixing devices of the type comprising a central screw and expanding sleeve. The holes have a parallel sided length with a central conical section. The boring tools are arranged such that after the start of the straight hole has been bored, pressure against a spring causes a second cutting edge, mounted within the first, to pivot outwards to cut the conical section. This lateral movement can be caused either by pivoting or by a system of helical slides which rotate to give progressive lateral movements. Other variants include the second cutting edge pushed diagonally through a slot in the straight sided drill.