baber/WOPTO huggingface dataset:
Patent MX-PA03012049-A (MX)
Title: Pharmaceutical formulations, which are solid, in solution, suspension and emulsion containing ranitidine and cisapride.
Inventor: ARACELI ALVAREZ ALVAREZ
IPC: A61P1/04
Filed: 2003-12-19
Abstract: The present invention refers to pharmaceutical formulations in different embodiments, which comprises ranitidine and cisapride. The said invention includes novel formulations comprising: a) ranitidine, b) cisapride, c) one or more solubilizing agents, d) one or more sweetening agents, e) one or more flavouring agents and/or essences, f) one or more viscosity agents, g) one or more antimicrobial agents, h) one or more anti-adhering agents, i) one or more disintegrating agents, j) one or more binding agents, k) one or more lubricating agents, l) one or more diluting agents, m) one or more surfactant agents, n) one or more antioxidant agents, o) one or more emulsifying agents, and p) any additive which is useful for the formulation. Moreover, the present invention provides a method for treating the gastrointestinal reflux, gastritis, and peptic, gastric and duodenal ulcers caused by diverse etiologies, by means of applying suitable doses of said formulations.
Patent MX-PA04004921-A (MX)
Title: Device and method for carrying out heterogeneously-catalysed reactive distillations in particular for the production of pseudoionone.
Inventor: BJOERN KAIBEL
IPC: B01J23/10
Filed: 2002-12-05
Abstract: The invention relates to a column for carrying out reactive distillations in the presence of a heterogeneous particulate catalyst, with a packing or filling bodies, which form cavities in the column interior. The quotient for the hydraulic diameter for the gas stream through the packing or filling bodies and the equivalent diameter of the catalyst particles lies in the range of 2 to 20, preferably in the range of 5 to 10, whereby the catalyst particles are introduced loose into the cavities, distributed and removed under the influence of gravity.
Patent MX-PA04005450-A (MX)
Title: Use of 2-hydroxy or 2-acetyloxy-4-trifluoromethylbenzoic acid derivatives as an agent for the treatment and prevention of mild cognitive impairment.
Inventor: JOSE IGNACIO IZQUIERDO PULIDO
IPC: A61P25/28
Filed: 2002-12-06
Abstract: The present invention relates to the use of 2-hydroxy or 2-acetyloxy-4-trifluoromethylbenzoic acid, respectively, for the treatment or prevention of mild cognitive impairment (MCI) in mammals, especially in human beings. Futhermore, the present invention also concerns the use of 2-hydroxy or 2-acetyloxy-4-trifluoromethylbenzoic acid, respectively, for delaying or preventing the conversion of MCI into dementia, especially Alzheimer's Disease.
Patent MX-PA04005637-A (MX)
Title: Cellulose fibers treated with acidic odor control agents.
Inventor: KELLY M SEDLACHEK
IPC: A61L15/28
Filed: 2002-09-20
Abstract: An odor control system is formed by treating cellulose fibers with a partially neutralized carboxylic acid odor control agent. The odor control system absorbs odor and inhibits formation of various odor-producing bacteria. The odor control system is useful in the absorbent cores of a wide variety of personal care and medical absorbent garments.
Patent MX-PA04007068-A (MX)
Title: Starch derivatives, starch active substance conjugates, method for the production thereof and their use as medicaments.
Inventor: CONRADT HARALD
IPC: A61K47/48
Filed: 2003-02-20
Abstract: The invention relates to starch derivatives of formula (I), in which: X represents a bromine or iodine atom; R" represents a straight-chain or branched alkyl group, aryl group or aralkyl group, and; R-CO- represents an oxidized substituted or unsubstituted starch radical that is oxidized on the reducing terminal group to form a carboxylic acid. Starch derivatives of formula (I) can selectively couple to active substances containing SH groups and have a prolonged half-life period in the human body. The invention also relates to coupling products of compound (I) with active substances, to methods for the production thereof, and to their use as medicaments.
Patent MX-PA04007951-A (MX)
Title: Moisture curable adhesive composition.
Inventor: LEO AUGUST TISCHER
IPC: C09J201/10
Filed: 2003-02-14
Abstract: The present invention relates to an adhesive and more particularly to a moisture curable adhesive. In one embodiment, the present invention includes a moisture curable adhesive contains a polymer including reactive silicon end groups, a catalyst and from about 3% to about 35% by weight diluent. The moisture curable adhesive composition exhibits improved tack and self-leveling properties at low viscosities less than about 10,000 centipoise. In another embodiment the moisture curable adhesive composition contains a polymer including reactive silicon end groups, a catalyst and up to about 40% by weight filler, based on the total weight of the adhesive composition. The moisture curable adhesive composition maintains clarity at high filler loading and has excellent UV resistance. Preferably, the filler is a fumed silica having a maximum surface area of less than about 250m2/g. In another embodiment, the moisture curable adhesive contains a polymer including a reactive silicon group and from about 40% to about 85% percent by weight filler and has a viscosity of less than about 500,000 centipoise. The present invention is further directed to a method of joining two adherends.
Patent MX-PA04010887-A (MX)
Title: Warming and nonirritating lubricant compositions.
Inventor: SUN YING
IPC: A61P1/02
Filed: 2003-05-01
Abstract: This invention relates to substantially anhydrous warming, non-toxic and nonirritating lubricating compositions containing polyhydric alcohols and an insulating agent. The invention also relates to methods of using such compositions for lubrication, administration of active ingredients and for preventing or treating dysmenorrhea.
Patent MX-PA04011296-A (MX)
Title: Drive-thru window advertising system.
Inventor: CHRIS QUINLAN
IPC: G09F19/00
Filed: 2003-05-14
Abstract: An advertising system for encouraging impulse purchases of non-prescription products or services at a drive-thru window (10). The system comprises a drive-thru window, having an interior and an exterior, where customers pick-up prescription products. One or more advertising signs (12) with changeable advertising copy promoting one or more non-prescription products or services are visible from a vehicle (54) waiting in line at or approaching the exterior of the drive-thru window. A set of storage devices (40) is positioned in close proximity to the interior of the drive-thru window and readily accessible by an operator of the drive-thru window. Each storage device contains one of the non-prescription products or items related to one of the non-prescription services corresponding to the changeable advertising copy.
Patent MX-PA04011411-A (MX)
Title: Modeling simulation and comparison of models for wormhole formation during matrix stimulation of carbonates.
Inventor: MURTAZA ZIAUDDIN
IPC: E21B43/25
Filed: 2003-05-29
Abstract: A new averaged/continuum model is presented for simulation of wormhole formation during matrix stimulation of carbonates. The averaged model presented here takes into account the pore level physics by coupling the local pore scale phenomena to the macroscopic variables (Darcy velocity, pressure and reactant cup-mixing concentration) through the structure-property relationships (permeability-porosity, average pore size-porosity and interfacial area-porosity) and the dependence of the fluid-solid mass transfer coefficient and fluid phase dispersion coefficient on the evolving pore scale variables (average pore size, local Reynolds and Schmidt numbers).This model allows better predictions of the flow channeling so that the matrix treatment may be adjusted to promote wormhole formations.
Patent MX-PA05000283-A (MX)
Title: Functional cardiomyocytes from human embryonic stem cells.
Inventor: HE JIA-QIANG
IPC: C12N5/08
Filed: 2003-07-25
Abstract: Human embryonic stem cells form embryoid bodies in culture which contain differentiated human cells. Some of the human cells in embryoid bodies differentiate into cardiomyocytes. Here the biological and electrical characteristics of those cardiomyocytes are described with reference to the use of cardiomyocytes derived from human embryonic stem cells in drug screening protocols for mechanisms of cardiac toxicity.
Patent MX-PA05002629-A (MX)
Title: Fluidising composition.
Inventor: ZINK HUBERTUS MATTHIAS
IPC: C04B103/32
Filed: 2002-09-09
Abstract: A fluidising admixture for use with sprayable cementitious compositions, the admixture consists of 2-phosphonobutane-1,2,4-tricarboxylic acid and at least one selected polymer derived from ethylenically-unsaturated mono-or dicarboxylic acids. Citric acid may optionally be present. The admixture has good fluidising properties and outstanding shelf-life.
Patent MX-PA05005576-A (MX)
Title: Method of treatment of transplant rejection.
Inventor: CHANGELIAN PAUL STEVEN
IPC: A61K31/519
Filed: 2003-11-17
Abstract: A method of treating or preventing chronic organ transplant rejection comprising administering a compound of the formula (I), wherein R1, R2 and R3 are as defined above.
Patent MX-PA05010185-A (MX)
Title: Methods for treating or preventing an inflammatory or metabolic condition by inhibiting jnk.
Inventor: YOSHITAKA SATOH
IPC: C07D403/12
Filed: 2004-03-24
Abstract: This invention generally relates to methods for treating or preventing a condition responsive to JNK inhibition, such as a metabolic condition, comprising administering to a patient in need thereof an effective amount of an Anilinopyrimidine Derivative having the following structure (I) or a pharmaceutically acceptable salt thereof, wherein R1 through R6 are as defined herein.
Patent MX-PA05011353-A (MX)
Title: Chemokine receptor binding heterocyclic compounds with enhanced efficacy.
Inventor: BRIDGER GARY J
IPC: A61K31/444
Filed: 2004-04-22
Abstract: Compounds that interact with the CXCR4 receptor are described. The compounds are useful in treating for Example, HIV infection and inflammatory conditions such as rheumatoid arthritis, as well as asthma or cancer, and are useful in methods to elevate progenitor and stem cell counts as well as methods to elevate white blood cell counts.
Patent MX-PA05011442-A (MX)
Title: Lie-down massager.
Inventor: KIM HAKJIN
IPC: A61H1/00
Filed: 2004-05-04
Abstract: A lie-down massager includes a base frame (12) having an elongated top panel (14), a rider (18) provided below the elongated top panel of the base frame, a guide member (26) movably engaged between the base frame and the rider so as to enable the rider to make a horizontally reciprocal movement relative to the base frame, a lifter (20) having a top plate (120), a bottom plate (122), and a lifting device moving the top plate vertically relative to the bottom plate, and massage bumps (100) attached to the top plate of the lifter and moving vertically and/or hor -izontally along the elongated top opening of the elongated top panel of the base frame. T he lifting device of the lifter adopts direct linear movement. The lifting device includes a screw lifting mechanism, a combination gear mechanism, a rack gear mechanism, a hydraulic lifting mechanism and an air cylinder lifting mechanism.
Patent MX-PA06005866-A (MX)
Title: Absorbent articles with removable protective wing portions.
Inventor: EXARHOS PAT M
IPC: A61F13/474
Filed: 2004-05-27
Abstract: An absorbent article, such as a feminine care product, includes a liquid permeable top cover, a generally liquid impermeable baffle, and an absorbent structure disposed between the top cover and outer cover. A wing structure is removably attachable to a garment facing side of the baffle and includes laterally extending flap portions having dimensions so as to wrap around the crotch portion of an undergarment. The garment facing side of baffle includes hook material defined in a pattern extending generally over the surface thereof, the hook material providing a primary attachment between the baffle and the undergarment. The wing structure has a body facing side of a hook compatible material and a garment facing side comprising hook material defined in a pattern extending generally over the surface thereof. The wing structure is variably positionable on and removably attachable over the entirety of the garment facing side of baffle.
Patent MX-PA06006404-A (MX)
Title: Electronic apparatus and enclosure employing substantially co-planar portions with mating crenellations.
Inventor: COX ROGER W
IPC: H05K9/00
Filed: 2004-12-02
Abstract: An electronic apparatus, such as a meter, includes an enclosure having a first housing portion with an opening and a second front plate portion. Meter circuitry is mounted within the enclosure. The second front plate portion mates with the first housing portion within the opening and forms an interface joint. The housing and front plate portions are at least substantially co-planar proximate the interface joint and include a plurality of mating crenellations. These mating crenellation, such as serrations, reduce electromagnetic interference radiation to or from the enclosure when the housing and front plate portions are mated together.
Patent MX-PA06007443-A (MX)
Title: Electrical power management system.
Inventor: WILSON DONALD B
IPC: H02J4/00
Filed: 2006-06-27
Abstract: A system for monitoring an electrical power distribution system monitors a selected device or quantity in the power distribution system and produces an output signal representing a sensed condition; receives and stores data relating to the sensed condition from the power distribution system; stores a display of at least a portion of the stored data relating to the sensed condition; produces a message in response to a change in the output signal representing a change in the sensed condition and transmits the message to remote recipients, the message including a hyperlink to the display so that a recipient of the message can use the hyperlink to automatically access the display to view data relating to the reported change in the sensed condition. In one specific embodiment, the message is an email message that is automatically transmitted to preselected remote recipients in response to the change in the sensed condition.
Patent MX-PA06008561-A (MX)
Title: Process for preparing hydroxy functional vegetable oils.
Inventor: CASPER DAVID M
IPC: C07C67/31
Filed: 2005-08-22
Abstract: Simple, economical preparative processes for the provision of pure hydroxyl functional materials that are derived by converting the alkene groups of the unsaturated molecules found in vegetable oils, into hydroxyl groups.
Patent MX-PA06009012-A (MX)
Title: Needle guard clip with lip .
Inventor: BIALECKI DENNIS M
IPC: A61M5/00
Filed: 2006-08-08
Abstract: A needle guard includes a clip with a canting wall to grip the needle shaft and a distal wall to block the tip thereof, wherein the canting and distal walls may be interconnected by an angled strut, a spring member, such as a leaf spring, may have a portion extending past an edge of the strut to bias the clip to grip the needle shaft, and the distal wall may be or include a stylus and have an L-shape to define a lip to help block the needle tip. The clip may have a depending heel to help pivot the clip about a ledge to grip the needle shaft. A needle support may be provided to limit flexure of the needle which might otherwise allow the needle to come loose from the clip. Arrangements for limiting rotation of the needle hub and needle guard housing are provided, as is a protective shroud to reduce the risk of inadvertent activation of the needle guard. Further, the needle guard may be used with a catheter assembly. Also provided is an improved duckbill release mechanism.
Patent MY-100876-A (MY)
Title: Automatic door with automatic lock system
Inventor: YUKIO YOSHIDA
IPC: E05F15/20
Filed: 1987-03-19
Abstract: AN AUTOMATIC DOOR INCLUDING A DOOR BODY CONNECTED TO A CHAIN OR BELT EXTENDING BETWEEN AND WOUND AROUND A DRIVE PULLEY DISPOSED ON ONE SIDE OF A DOOR OPENING AND A DRIVEN PULLEY DISPOSED ON THE OTHER SIDE THEREOF IN WHICH THE DOOR BODY IS ACTUATED TO OPEN AND CLOSE BY ALLOWING THE DRIVE PULLEY TO BE ROTATED FORWARDLY OR REVERSELY BY AN ELECTRIC MOTOR CONNECTED THROUGH A MAIN SWITCH AND A CONTROLLER TO A MAIN ELECTRIC POWER SUPPLY SOURCE, COMPRISES AN APPARATUS FOR AUTOMATICALLY MOVING THE DOOR BODY TO ITS CLOSING-STOP POINT WHEN THE SUPPLY OF ELECTRIC POWER TO THE MOTOR IS INTERRUPTED BY THE OFF OPERATION OF THE MAIN SWITCH, AND A LOCKING APPARATUS FOR AUTOMATICALLY LOCKING THE DOOR BODY IN ITS CLOSING-STOP POSITION AT THAT TIME. (FIG. 1)
Patent MY-102892-A (MY)
Title: Rotary vane-type fluid pressurizing unit
Inventor: MASAO YASUDA
IPC: F04C2/344
Filed: 1987-09-11
Abstract: A VAN-TYPE ROTARY COMPRESSOR COMPRISES A HOUSING DEFINING AN INTERNAL SPACE, A CAM RING ENCLOSED IN THE HOUSING TO DEFINE BOTH LOW AND HIGH PRESSURE CHAMBERS IN THE INTERNAL SPACE AND TO DEFINE A WORKING CHAMBER INTRODUCING A LOW PRESSURE WORKING FLUID FROM THE LOW PRESSURE CHAMBER AND FEEDING A HIGH PRESSURE WORKING FLUID INTO THE HIGH PRESSURE CHAMBER, A ROTOR DISPOSED WITHIN THE WORKING CHAMBER TO CARRY A PLURAL VANES EACH OF WHICH GENERATES THE HIGH PRESSURE FLUID THROUGH ROTARY MOVEMENT OF THE ROTOR HAVING A DRIVEN CONNECTION WITH A DRIVE SHAFT, AT LEAST ONE CLOSURE MEMBER SEALINGLY FIXED TO AN AXIS END OF THE CAM RING FOR DEFINING THE WORKING CHAMBER. THE CLOSURE MEMBER COMPRISES A DEFORMABLE THIN PLATE INCLUDING AN OPENING FOR INTRODUCING THE DRIVE SHAFT TO THE ROTOR. A CYLINDRICALSUPPORT IS PROVIDED FOR ROTATABLY SUPPORTING THE DRIVE SHAFT, WHICH SUPPORT FORMS PART OF THE HOUSING. (FIG. 1)
Patent MY-105305-A (MY)
Title: Absorbent structures containing superabsorbent material and web of wetlaid stiffened fibers.
Inventor: DANNY RAYMOND MOORE
IPC: A61F13/49
Filed: 1991-01-22
Abstract: ABSORBENT STRUCTURES HAVING A WETLAID FLUIDACQUISITION/DISTRIBUTION LAYER WITH AN AVERAGE DRY DENSITY OF LESS THAN ABOUT 0.30 G/CC, AN AVERAGE DENSITY UPON WETTING WITH 1.0NACL AQUESOUS SOLUTION OF LESS THAN ABOUT 0.20 9/CC, AND AN AVERAGE DRY BASIS WEIGHT FROM ABOUT 0.001 TO ABOUT 0.10 G/CM2; AND A FLUID STORAGE LAYER POSITIONED BENEATH THE AQUISITION/DISTRIBUTION LAYER COMPRISING AT LEAST ABOUT 15UPERABSORBENT MATERIAL. THE FLUID ACQUISITION/DISTRIBUTION LAYER COMPRISES FROM ABOUT 50TO 100HEMICALLY STIFFENED CELLULOSIC FIBRES AND FROM 0TO ABOUT 50BINDING MEANS. (FIG. 1)
Patent MY-107000-A (MY)
Title: Disk driver in which the disk holder is located below a slider
Inventor: TAKASHI WATANABE
IPC: G11B17/032
Filed: 1991-06-24
Abstract: A DISK DRIVER IN WHICH A DISK IS INSERTED HAS A HEAD (12) A HOLDER (5) AND A SLIDER (14). THE HOLDER (5) ASCENDS AND DESCENDS BETWEEN A FIRST POSITION AND A SECOND POSITION. THE HEAD (12) ASCENDS AND DESCENDS BETWEEN A THIRD POSITION AND A FOURTH POSITION IN RESPONSE TO THE ASCENDING AND DESCENDING OF THE HOLDER(5). THE DISK (3) IS INSERTED INTO OR EJECTED FROM THE HOLDER (5) AT THE FIRST POSITION WHEN THE HEAD (12) IS AT THE THIRD POSITION AND INFORMATION IS RECORDED ON OR REPRODUCED THEREFROM BY THE HEAD AT THE FOURTH POSITION WHEN THE HOLDER (5) IS AT THE SECOND POSITION. SINCE THE THIRD POSITION IS HIGHER THAN THE FIRST POSITION SO THAT THE HEAD (12) DOES NOT HIT THE INSERTED DISK, THERE IS A SPACE BETWEEN THE FIRST AND THIRD POSITIONS. ACCORDINGLY, THE SLIDER (14) IS LOCATED IN THE SPACE SO THAT IT CAN AVOID HITTING THE HEAD (12), AND THUS THE DISK DRIVER CAN BE MADE THIN.(FIG 5,6)
Patent MY-112935-A (MY)
Title: Glass gob shearing apparatus
Inventor: D WAYNE LEIDY
IPC: C03B7/10
Filed: 1995-10-11
Abstract: A PARALLEL SHEAR APPARATUS (10) FOR SEQUENTIALLY SHEARING EACH OF A PLURALITY OF STREAMS OF MOLTEN GLASS (A, B, C, D) FROM A GLASS FEEDER INTO GOBS FOR PROCESSING INTO GLASS CONTAINERS BY A GLASS FORMING MACHINE. THE APPARATUS (10) HAS FIRST AND SECOND OPPOSED CARRIAGES (12, 14) WHICH ARE RECIPROCABLE ALONG PARALLEL SLIDES (16, 18, 20) TOWARD AND AWAY FROM ONE ANOTHER, EACH OF THE CARRIAGES CARRYING ONE OR MORE OPPOSED KNIFE ELEMENTS (32A, ETC., 34A, ETC.), CORRESPONDING TO THE NUMBER OF STREAMS OF MOLTEN GLASS, AND THE OPPOSED KNIFE ELEMENTS (32A, 34A, ETC.) OVERLAP AT THE INNERMOST LIMITS OF THEIR TRAVEL TO PERFORM THE SHEARING ACTION. MOTION OF THE CARRIAGES (12, 14) IS ACTUATED BY A UNIDIRECTIONALLY ACTING SERVO MOTOR (36), WHICH IMPARTS OSCILLATING MOTION TO A BELL CRANK (22) THROUGH A CONNECTING ROD (46). THE OSCILLATING MOTION OF THE BELL CRANK (22) IMPARTS SIMULTANEOUS, OPPOSED, RECTILINEAR MOTION TO THE CARRIAGES (12, 14) THROUGH CONNECTING RODS (26, 30), WHICH ARE PIVOTALLY ATTACHED TO THE SERVO MOTOR (36) AT SPACED APART LOCATIONS.FIGURE 1
Patent MY-117227-A (MY)
Title: Motorbike transport case comprising a releasable handle lock.
Inventor: VISENZI VINCENZO
IPC: B62J9/00
Filed: 2000-05-31
Abstract: THE INVENTION RELATES TO A DETACHABLE MOTORBIKE TRANSPORT CASE (TC) COMPRISING A BOTTOM SHELL (1) AND A TOP SHELL (2) HINGED TO THE BOTTOM SHELL (1). A LOCKING MECHANISM (12A, 8, 31, 32, 39, 39A), PREFERABLY OPERABLY BY A KEY (12), IS ARRANGED TO SELECTIVELY LOCK THE TOP SHELL (2) TO THE BOTTOM SHEL (1). A HANDLED (18) IS ARTICULATED TO THE TRANSPORT CASE(TC) SUCH AS TO BE PIVOTABLE BETWEEN A RETRACTED POSITION (FIGURE 4) AND A PROJECTING POSITION (FIGURE 9). IN ORDER TO ENHANCED THE FUNCTIONALLY, COMFORT AND SAFETY OF THE MOTORBIKE TRANSPORT CASE, THE LOCKING MECHANISM COMPRISES RETAINING MEANS (11,41) FOR RETAINING THE HANDLE (18) IN THE RETRACTED POSITION. IN THIS MANNER, THE HANDLE (18) IN THE RETRACTED POSITION THEREOF, AND THE LOCKING MECHANISM CAN ASUME A RELEASE STATE (90°) IN WHICH THE RETAINING MEANS (11, 41) RELEASE THE HANDLE (18) FROM THE RETRACTED POSITION. IN THIS MANNER, THE HANDLE (18) CANNOT MOVE INADVERTENTLY TO ITS PROJECTING POSITION AND THE LOCKED HANDLE (18) CANNOT BE MOVED TO ITS PROJECTING POSITION BY AN UN AUTHORISED PERSON. THE UNLOCKING OPERATION CAN BE UTILISED TO CONCURRENTLY EJECT THE HANDLE AUTOMATICALLY TO ITS PROJECTING POSITION WHICH MAY PROVIDE ACCESS TO A FURTHER CONTROL ELEMENTS (E.G. AN OPENING PUSH BUTTON 16) THAT MAY HAVE BEEN COVERED BY THE RETRACTED HANDLE (18).
Patent MY-125933-A (MY)
Title: Electrical conductor support insulator
Inventor: OKUNO MITSUHARU
IPC: H01B17/00
Filed: 2000-11-08
Abstract: AN ELECTRICAL CONDUCTOR SUPPORT INSULATOR (1) FOR PASSING THROUGH AND SUPPORTING A MAIN CIRCUIT CONDUCTOR( 2) WITHIN A HOLE (1A) OF THE CONDUCTOR SUPPORT INSULATOR( 1). WHEN THE MAIN CIRCUIT CONDUCTOR (2) IS AN ELECTRICAL INSULATING MATERIAL, ALL PORTIONS EXCEPT FOR THE CONDUCTOR CONNECTION PORTION ARE INSULATED , SO THAT NO BARE LIVE PORTION IS PRESENT AND SPACE INSULATION DISTANCE IS MADE SHORT. FIG 1.
Patent MY-124922-A (MY)
Title: System for the electronic commutation of a brushless dc motor
Inventor: JENS KROTSCH
IPC: H02P6/18
Filed: 2001-05-08
Abstract: THE INVENTION RELATES TO A SYSTEM FOR THE ELECTRONIC COMMUTATION OF A BRUSHLESS DC MOTOR (1) HAVING THREE PHASE WINDINGS (U, V, W) WHICH ARE ELECTRICALLY DISPLACED BY 12?C, COMPRISING A SEMICONDUCTOR BRIDGE (4) CONSISTING OF SIX POWER SEMICONDUCTORS (S? TO S6), WHICH DRIVES THE PHASE WINDINGS (U, V, W) FOR GENERATING A ROTATING MAGNETIC STATOR FIELD, A CONTROL UNIT (6) WHICH CORRESPONDINGLY DRIVES THE POWER SEMICONDUCTORS (S1 TO S6), AND A DEVICE FOR DETECTING THE RESPECTIVE ROTATIONAL POSITION OF A ROTOR EXHIBITING A PERMANENT?MAGNETIC MAGNET WHEEL, THE DEVICE FOR DETECTING THE ROTOR POSITION BEING CONSTRUCTED AS SENSOR-LESS EVALUATING UNIT (6), FOR EVALUATING THE VOLTAGE INDUCED BY THE ROTATING MAGNET WHEEL WHICH CAN BE MEASURED AT THE WINDING TERMINAL (TJ, V, W) OF THE MOTOR WHICH IS NOT CURRENTLY DRIVEN. IT IS THE OBJECT OF THE PRESENT INVENTION TO ACHIEVE A REDUCTION OF RUNNING AND COMMUTATION NOISES WHILST MAINTAINING THE INEXPENSIVE AND FAULT-INSENSITIVE SENSORLESS ROTOR POSITION DETECTION. FOR THIS PURPOSE, THE CONTROL UNIT (6) DRIVES THE POWER SEMICONDUCTORS (S? TO S6) IN TWELVE SWITCHING STATES, WHICH ARE DIFFERENT WITH RESPECT TO THE MAGNETIC FIELD DIRECTION EFFECTED IN EACH CASE, BY MEANS OF A 12-STEP COMMUTATION OVER ONE ELECTRICAL REVOLUTION OF THE DC MOTOR IN DEPENDENCE ON THE ROTOR POSITIONS. (FIGURE 1)