baber/WOPTO huggingface dataset:
Patent MX-PA02006006-A (MX)
Title: Modular welding machine.
Inventor: DOMSCHOT BRYAN W
IPC: B23K37/047
Filed: 2000-12-18
Abstract: A spot welding machine (10) is disclosed with interchangeable tooling modules (14, 14, 14) for use in a base operating machine (12). Pushpull welding current contactors connect the tooling module (14, 14, 14) to a transformer on the base operating machine (12) when the module (14, 14, 14) is installed. The module (14, 14, 14) is movable on a guide between uninstalled and installed locations and closes the contactors upon installation of the module. A set of fluid pressure and electrical connector members have complementary mating parts mounted on a module plate and on a machine connector plate of the base operating machine (12). An actuator moves the machine connector plate from a retracted position to an extended position for connecting the complementary connector members after the module (14, 14, 14) is installed.
Patent MX-PA02007003-A (MX)
Title: Anxiety method.
Inventor: MAYOL ROBERT F
IPC: A61K31/505
Filed: 2000-10-18
Abstract: 6Hydroxy8[4[4(2pyrimidinyl)piperazinyl]butyl ]8azaspiro[4.5]7,9dione and its pharmaceutically acceptable salts and hydrates are useful in the allevation of anxiety.
Patent MX-PA02011201-A (MX)
Title: Video coding.
Inventor: HANNUKSELA MISKA
IPC: H04N19/89
Filed: 2001-05-14
Abstract: A method of encoding a video signal representing a sequence of pictures, the method comprising receiving a current picture for encoding, forming a temporal prediction of the current picture from a default reference picture for the current picture, comparing the default reference picture with at least one further reference picture, calculating a measure of the similarity between the default reference picture and each further reference picture and, if the measure of similarity meets a pre-determined criterion, outputting an indicator identifying the further reference picture.
Patent MX-PA03005387-A (MX)
Title: Transmission system with high frequency stability.
Inventor: JEAN-Y VES LE NAOUR
IPC: H04B1/10
Filed: 2003-06-16
Abstract: The invention proposes a transmission system using a reference subcarrier to synchronize a local oscillator 104. The reference subcarrier can be placed at various locations of the band allotted to an operator. The external unit 1 of the reception device comprises frequency-wise selection means 107 which make it possible to select the synchronization subcarrier.
Patent MX-PA03007142-A (MX)
Title: Chemical compounds.
Inventor: JASON SCOTT SAWYER
IPC: A61P9/10
Filed: 2002-01-03
Abstract: Compounds of the general structural formula and use of the compounds and salts and solvates thereof, as therapeutic agents.
Patent MX-PA03007587-A (MX)
Title: Laminate material for the protection of body parts and device comprising such laminate.
Inventor: LEONARDUS JOHANNES MARIA VAN D
IPC: D03D15/56
Filed: 2002-02-22
Abstract: The present invention relates to a laminate material, comprising an upper layer (I) and a lower layer (II) which is joined to the upper layer over substantially the entire surface thereof, the upper layer (I) comprising a thin layer of leather material (1), and the lower layer (II) comprising a layer of material which can be stretched in two directions, in which laminate material the lower layer (II) comprises at least one support layer (3) which is resilient in two directions and comprises at least two sorts of interwoven fibres, at least one type of fibres being produced from an elastic substance, as well as a layer (5) of a compressible substance which is joined to the support layer over substantially the entire surface thereof and is resilient in three mutually perpendicular directions. The invention also relates to a device for protecting a body part of a human or an animal, comprising a laminate material of this type.
Patent MX-PA03007615-A (MX)
Title: Seal for pipelines threaded joints and its use.
Inventor: ENRIQUE TRIVELLI
IPC: F16L58/18
Filed: 2003-08-25
Abstract: A seal for threaded joints of pipelines formed by pipes with outer threads joined by couplings with inner threads, the seal constituted by a substantially cylindrical sleeve of elastomeric material, wherein the outer surface of the sleeve has at least on part of its length a thread engaging the inner thread of the coupling. The sleeve can be enlarged at both ends by sealing lips. Preferably, the seal is used for joints of pipelines to convey fluids, especially corroding fluids, hydrocarbons and its derivates, and the like.
Patent MX-PA03011858-A (MX)
Title: Barrier movement control safety method and apparatus.
Inventor: JAMES J FITZGIBBON
IPC: E05F15/16
Filed: 2003-02-19
Abstract: A barrier mount system is disclosed which opens and closes a barrier such as a gate or garage door in response to user generated commands. Obstruction detection apparatus is provided for safety of operator. When an obstruction is sensed, the barrier movement system is inhibited from responding to user generated commands until a predetermined event occurs. The event may be passage of a predetermined amount of time or barrier movement of a particular amount.
Patent MX-PA04004881-A (MX)
Title: Osmotic delivery device having a two-way valve and dynamically self-adjusting flow channel.
Inventor: JAY GILBERT SCOTT
IPC: A61K9/00
Filed: 2002-11-21
Abstract: An implantable, osmotically-driven delivery system having a dynamic, two-way valve (10) and self-adjusting, variable geometry fluid (1) flow channel. As pressure within the agent delivery system goes up, the fluid channel narrows, thereby restricting flow. At exceptionally high pressures, the valve can be designed to close altogether at the orifice or delivery end, or it can provide a minimal leak path so that a maximum fluid flow is never exceeded. At zero or very low pressures, the valve will close completely at the beneficial agent reservoir end, isolating the beneficial agent formulation from external fluid infiltration and thereby eliminating diffusion of external fluid into the beneficial agent formulation.
Patent MX-PA04005162-A (MX)
Title: Commercial replacement systems and methods using synchronized and buffered tv program and commercial replacement streams.
Inventor: RADKE DANIEL A
IPC: H04N5/00
Filed: 2004-05-27
Abstract: A television program stream that includes television programs and at least one original commercial, and a commercial replacement stream that includes at least one replacement commercial, are received simultaneously such that a respective replacement commercial is approximately synchronized in time with a respective original commercial. The television program stream and/or the commercial replacement stream is buffered to substantially synchronize a respective replacement commercial with a respective original commercial. Selective switching is performed between the television program stream and the commercial replacement stream, to provide a television program output that includes the television programs and the at least one replacement commercial instead of the at least one original commercial. Accordingly, commercial replacement may be provided in set top boxes without the need for mass storage devices to store the replacement commercials. Regional and/or national commercials may ther eby be replaced by local commercials in TV markets and for multiple regional and/or national channels.
Patent MX-PA04009090-A (MX)
Title: Valve arrangement for reciprocating machinery such as a pump and a compressor.
Inventor: KYLLINGSTAD GE
IPC: F04B53/10
Filed: 2003-03-18
Abstract: A valve arrangement for reciprocating machine, where the arrangement (1) comprises an in-valve (18) and an out-valve (19), each valve (18), (19) being a springloaded one-way valve designed to open for flow when the pressure differential in the direction of flow provides a force that exceeds the spring tension, wherein the valves (18, 19) are mounted in a casing (8) that forms or is connected to the cylinder head of the reciprocating engine (2). The in-valve (18) and the out-valve (19) are mounted in a sleeve (16) designed to be fitted in a bore (9) in the casing (8), and where fluid may flow to the sleeve (16) from an inlet (11) in the casing (8) and into the sleeve (16) via the in-valve (18), and where the sleeve (16) is provided with at least one perforated area where fluid may flow radially out of or into the sleeve (16) via holes (50, 51), thereby flowing to or from a passage (14, 15) that forms a perpendicular or near perpendicular connection with the bore (9).
Patent MX-PA05005948-A (MX)
Title: Nonwoven products having a patterned indicia.
Inventor: WENDY JAHNER
IPC: D04H5/00
Filed: 2003-09-12
Abstract: A sheet-like product is disclosed having a patterned indicia for signifying the existence of an additive or ingredient that is contained within the product. The present inventors have discovered that a particular burst-like pattern provides various advantages and benefits in comparison to other patterns. In order to differentiate patterns of the present invention from other patterns, patterns made according to present invention were image analyzed during a dilation process.
Patent MX-PA05007044-A (MX)
Title: Method and apparatus for downhole spectroscopy processing.
Inventor: JACK HORKOWITZ
IPC: G01V5/04
Filed: 2003-11-21
Abstract: A method for downhole spectroscopy processing is described. The method includes: obtaining raw spectroscopy data using a downhole tool; processing the raw spectroscopy data using the downhole tool to obtain a downhole processed solution; transmitting the downhole processed solution to a surface processing system; and using the surface processing system to determine lithology information from the downhole processed solution. A downhole tool for processing raw spectroscopy data is also described. The tool includes: a neutron source; at least one detector for detecting the raw spectroscopy data; processing means for processing the raw spectroscopy data to produce a downhole processed solution; and means for transmitting the downhole processed solution to a surface location.
Patent MX-PA05010729-A (MX)
Title: Process for preparing low-viscosity allophanates containing actinically curable groups.
Inventor: LUDEWIG MICHAEL
IPC: C08G2/00
Filed: 2005-10-05
Abstract: The present invention provides a process for preparing radiation-curing allophanates having residual monomer contents of less than 0.5% by weight and an NCO content of less than 1% by weight, wherein (A) compounds containing isocyanate groups, (B) hydroxy-functional compounds which contain groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation (radiation-curing groups) and (C) optionally further compounds containing NCO-reactive groups, also optionally in the presence of a catalyst, are used to form NCO-group-containing urethanes having radiation-curing groups, which are subsequently reacted, without further addition of compounds containing isocyanate groups, in the presence of an allophanatization catalyst, the ratio of NCO groups of the compounds from A) to the OH groups of the compounds from B) and, where used, C) being 1.45:1.0 to 1.1:1.0.
Patent MX-PA05012595-A (MX)
Title: Drug delivery system.
Inventor: OUT HENK JAN
IPC: A61P31/18
Filed: 2004-05-19
Abstract: The subject invention provides a drug delivery system comprising at least one compartment consisting of (i) a drug-loaded thermoplastic polymer core, (ii) a drug-loaded thermoplastic polymer intermediate layer and (iii) a non-medicated thermoplastic polymer skin covering the intermediate layer, wherein said intermediate layer is loaded with (a) crystals of a first pharmaceutically active compound and with (b) a second pharmaceutically active compound in dissolved form and wherein said core is loaded with said second compound in dissolved form.
Patent MX-PA06000580-A (MX)
Title: Aiding of cognitive function.
Inventor: BRYAN JANET
IPC: A23L33/15
Filed: 2004-06-24
Abstract: The invention provides the use of a bioavailable iron compound and a bioavailable zinc compound in a weight ratio of at least 2:1, and at least one B vitamin, in the manufacture of an edible composition, for use in aiding the cognitive development or cognitive performance of humans having an age of up to 18 years.
Patent MX-PA06002164-A (MX)
Title: Adjustable temperature heat patch.
Inventor: PURCELL RICKY W
IPC: A61H1/02
Filed: 2004-03-31
Abstract: A heat patch that includes an enclosure made from a gas-permeable first layer and a second layer attached to the first layer. A heating composition is inside the enclosure. The heating composition generates heat when a gas (e.g., air) is received through the gas-permeable first layer. The gas-permeable first layer includes an inner surface and an outer surface. A gas-impermeable cover is detachably mounted to the outer surface of the first layer. In another aspect, the gas-impermeable cover includes a plurality of portions that are each detachably mounted to a separate area of the gas-permeable first layer. In still another aspect, the gas-impermeable cover includes information related to heat generated by the heat patch when the cover is removed from the gas-permeable first layer.
Patent MX-PA06003494-A (MX)
Title: Efficient frame tracking in mobile receivers.
Inventor: BULTAN AYKUT
IPC: H04B15/00
Filed: 2004-09-02
Abstract: A method for frame synchronization of a receiver in a wireless communication system wherein data is transmitted in frame units in a multipath environment begins by extracting data samples for a predetermined window size. A training sequence corresponding to a given cell parameter is generated. The data is correlated with the training sequence over different lags to locate the position of the first significant path, which defines the beginning of the frame. The correlated data is accumulated N times for each lag position to produce at least one accumulation vector. A most significant path value and position is determined that is the largest value among the accumulation vectors. A frame synchronization correction value is calculated based on the difference between the first significant path position and a constant called frame offset. The frame synchronization is adjusted based upon the frame synchronization correction value.
Patent MX-PA06003886-A (MX)
Title: Native immunoglobulin binding reagents and methods for making and using same.
Inventor: LI GANGZHOU
IPC: C12N5/06
Filed: 2004-10-06
Abstract: Isolated native immunoglobulin binding reagents including antibodies are provided, along with articles of manufacture, compositions and kits that include the native immunoglobulin binding reagents. Labeled reagents and subtrates that comprise samples or the reagents are provided. Method of screening for, making and using the reagents are also provided.
Patent MX-PA06006195-A (MX)
Title: Model for communication between manufacturing and enterprise levels.
Inventor: AUPPERLEE ERIC
IPC: G06F17/30
Filed: 2006-06-01
Abstract: A device for communicating with low level controllers and sensors located on the production floor of an enterprise directly from the top level of the enterprise. The device comprises a controller which interfaces with programmable logic controllers (PLCs) via the backplane into which the PLCs are plugged. Users are able to define triggers that specify the circumstances under which data points within the PLCs are transported to the enterprise level where they may be stored in a database or sent directly to enterprise application via one of a number of possible transfer protocols. The invention also includes a software client which allows users to set up transfer triggers and view data points on the PLCs in real time.
Patent MX-PA06008171-A (MX)
Title: Side loading needle depth stop.
Inventor: KANNER ROWLAND W
IPC: B25C3/00
Filed: 2006-07-17
Abstract: A needle depth stop which is side loading and configured to accommodate a wide range of needle diameters. The needle depth stop includes jaws which are biased closed and indexed into place by a spring member, such as a "C" ring. However, the jaws can be pivoted open for receiving a needle by pinching together two finger grip portions, the opening force deceasing at a decreasing rate as a result of the pivot translating toward the springs load center. The needle depth stop preferably provides approximately one pound of resistance to longitudinal displacement along the needle, and only one hand is required to position and lock the needle depth stop into place. In order to accommodate a wide range of needle diameters, the jaws include a plurality of grooves, each configured to accommodate a different range of needle diameters.
Patent MX-PA06015139-A (MX)
Title: Stabilization of polyether polyol, polyester polyol or polyurethane compositions.
Inventor: MADER DIETMAR
IPC: C08L75/04
Filed: 2005-06-20
Abstract: The present invention pertains to compositions comprising (a) a polyether polyol,a polyester polyol or a polyurethane, (b) a UV-absorber of formula (I) and/ora hindered amine light stabilizer of formula (II) wherein R1, and R2are each independently C1-C4alkyl or C1-C4alkyoxy,and (c) at least one further UV-absorber and/or hindered amine light stabilizerif only one of the components (I) and (II) is present with the proviso that component(c) is not a compound of formula (A)-(D) as defined in claim 1.
Patent MY-101280-A (MY)
Title: Spring coil & spring assembly
Inventor: KEITH A FLESHER
IPC: A47C27/06
Filed: 1987-10-01
Abstract: A SPRING COIL HAS AN OPEN-ENDED TERMINAL CONVOLUTION WHICH IS CONNECTED TO THE BODY OF THE COIL THROUGH A GRADIENT ARM. THE GRADIENT ARM CAN BE READILY VARIED IN LENGHT IN MANUFACTURE TO ALTER THE COMPRESSION AND THEREBY THE FIRMNESS OF THE SPRING COIL. ONE OR MORE OFFSET PORTIONS CAN FURTHER BE PROVIDED ON THE TERMINAL CONVOLUTION. SUCH OFFSET PORTIONS ARE ADVANTAGEOUSLY FORMED WITH A MAJOR STRAIGHT PART WHICH IS OUTWARDLY SPACED FROM MINOR STRAIGHT PARTS. THIS PROVIDES A THREE POINT ENGAGEMENT FOR THE OFFSET PORTION WHEN CONNECTED TO A BORDER WIRE WITH A BORDER WIRE HELICAL SPRING. THE SPRING MAKING UP AN INNERSPRING ASSEMBLY ARE ARRANGED IN ROWS AND COLOUMNS. THE OFFEST PORTIONS OF ADJACENT SPRING ARE OVERLAPPED IN ROWS AND ARE JOINED TOGETHER WITH CROSS-HELICAL SPRINGS THAT EXTEND ALONG COLUMNS AND ENCIRCLE THE OVERLAPPED PORTIONS. THE OFFSET PORTIONS OF THE SPRING COILS HAVE INSIDE AND OUTSIDE SHOULDERS ADJACETN THEIR ENDS, AND THE PITCH OF THE CROSS-HELICALS IS ADVANTAGEOUSLY CHOSEN SO THAT A CROSS-HELICAL SIMULTANEOUSLY ENGAGES THE OUTSIDE SHOULDERS OF ONE OF A PAIR OF OVER LAPPED OFFSET PORTIONS TO HOLD THE SPRING COIL AGAINST ROTATION. THE ADDITIONALLY HOLD THAT SPRING COIL AGAINST ROTATION.(FIG. 1)
Patent MY-103561-A (MY)
Title: Pestidal method using 2-phenylimidazole derivatives
Inventor: LESLIE ROY HATTON
IPC: C07D233/90
Filed: 1988-03-03
Abstract: THE INVENTION PROVIDES A METHOD FOR THE CONTROL OF ARTHROPOD, PLANT NEMATODE, HELMINTH OR PROTOZOAN PESTS USING A 2-PHENYLIMIDAZOLE DERIVATIVE OF THE FORMULA; (FORMULA 1) WHEREIN R1 REPRESENTS HYDROGEN, ALKYL (OPTIONALLY SUBSTITUTED BY ALKOXY ALKYLTHIO, ALKYLSULPHINYL, ALKYLSULPHONYL, CYANO, CARBOXY OR ALKOXYCARBONYL), R2 AND R3, EACH REPRESENTS HYDROGEN, HALOGEN, NITRO, CARBOXY, CYANO, ALKOXYCARBONYL, ALKANOYL, OR OPTIONALLY ALKYL SUBSTITUTED CARBOMYL OR SULPHAMOYL, OR AMINO (OPTIONALLY SUBSTITUTED BY ALKYL, AKLOXYCARBONYL OR ALKANOYL) OR A GROUP, R, RO, RS, RSO OR RSO2 IN WHICH R REPRESENTS ALKYL (OPTIONALLY SUBSTITUTED BY HALOGEN) AND AR REPRESENTS A GROUP OF THE FORMULA; (FORMULA 2) WHEREIN R4 AND R6 EACH REPRESENTS HALOGEN OR A GROUP R, RO, RS, RSO OR RSO2 AND R5, R7 AND R8 EACH REPRESENTS A SUBSTITUENT AS DEFINED FOR R4 AND R6, OR REPRESENTS HYDROGEN, HYDROXY, CARBOXY, NITRO, CYANO, AMINO, ALKYLAMINO (OPTIONALLY SUBSTITUTED BY ALKYL, ALKOXYCARBONYL OR ALKANOYL), ALKOXYCARBONYLOR ALKANOYL OR A PESTICIDALLY ACCEPTABLE SALT THEREOF, WITH THE EXCLUSION OF COMPOUNDS IN WHICH R2 AND R3 SIMULTANEOUSLY REPRESENT HYDROGEN ATOMS, COMPOSITIONS FOR USE IN THE METHOD AND NOVEL COMPOUNDS OF FORMULA 1.
Patent MY-103988-A (MY)
Title: Filter cover for a purification insert in a water treatment device with a hollow tube.
Inventor: HEINZ HANKAMMER
IPC: B01D29/00
Filed: 1989-03-25
Abstract: DESCRIBED IS A FILTER COVER FOR A PURIFICATION INSERT (4) IN A WATER TREATMENT DEVICE, WHEREIN THE FILTER COVER (5) HAS FILTER SLOTS (7) ON A CONICAL SURFACE PORTION (6) AND AT LEAST ONE VENT OPENING (9) IN THE MIDDLE OF A RAISED CONNECTING PORTION (8), AND CAN BE CONNECTED TO A HOLLOW TUBE (10) WITH A DISC (11). SO THAT OPERATION AND HANDLING, IN PARTICULAR VENTING AND MANIPULATION BY THE END CONSUMER, ARE IMPROVED IN THE CASE OF SUCH A FILTER CIVER, IT IS PROVIDED THAT THE FILTER SLOTS (7) ARE SUBSTANTIALLY STRAIGHT AND ARE ARRANGED IN A RING-LIKE CONFIGURATION ON THE FRUSTOCONICAL SURFACE PORTION (6) WHICH OCCUPIES ABOUT 1/3 TO 1/2 OF THE HEIGHT OF THE FILTER COVER (5) AND THAT PROVIDED ON THE UPPER OUTER ANNULAR SURFACE OF THE DISC (11) ARE MARKINGS (15, 16) WITH WHICH THERE IS ASSOCIATED AN ADJUSTABLE POINTER (17) MOUNTED ON AN ARRESTING RING (19) WHICH IS ARRANGED NON-DETACHABLY AND ROTATABLY ON THE HOLLOW TUBE (10). (FIG. 1)
Patent MY-104038-A (MY)
Title: Liquid detergent composition.
Inventor: MASAKI TSUMADORI
IPC: C11D3/43
Filed: 1989-06-20
Abstract: A LIQUID DETERGENT COMPOSITION FOR HOUSEHOLD USE IS DISCLOSED. IT COMPRISES, AS ESSENTIAL COMPONENTS, (A)0.01-1.0% BY WEIGHT OF AN ANIONIC SURFACE ACTIVE AGENT, (B) 0.01-1.0% BY WEIGHT OF A TERPENE-TYPE HYDROCARBON SOLVENT SELECTED FROM MONOTERPENES AND SESQUITERPENES, AND (C) 0.001-0.1% BY WEIGHT OF A WATER-SOLUBE DIVALENT METALLIC SALT. THE COMPOSITION HAS SUPERIOR DETERGENCY, EXHIBITS A MINIMUM ADVERSE EFFECT ON SURFACE WHICH IT CONTACTS AND A HIGH DEGREE OF SAFETY WHEN IN CONTACT WITH THE HUMAN BODY, AND DOES NOT REQUIRE RINSING.
Patent MY-106054-A (MY)
Title: Compositions containing reduced calorie fats and resulting tempered products.
Inventor: ALBERT MARTIN EHRMAN
IPC: A23G3/00
Filed: 1989-12-19
Abstract: A PROCESS FOR TEMPERING FLAVORED CONFECTIONARY COMPOSITIONS, IN PARTICULAR CHOCOLATE-FLAVORED CONFECTIONARY COMPOSITIONS, CONTAINING CERTAIN REDUCED CALORIE FATS IS DISCLOSED. THESE COMPOSITIONS ARE RAPIDLY COOLED TO A TEMPERATURE OF ABOUT 57?F (13.9?C) OR LESS AND THEN HELD IN THIS COOLER TEMPERATURE RANGE FOR TYPICALLY AT LEAST ABOUT 16 HOURS. THE COOLED COMPOSITION IS THEN RAISED TO A TEMPERATURE IN RANGE FROM ABOUT 57? TO ABOUT 72?F (ABOUT 13.9? TO ABOUT 22.2? C) IN A MANNER SUCH THAT BLOOM FORMATION (SURFACE DISCOLORATION) DOES NOT OCCUR. THE RESULTING TEMPERED PRODUCT HAS A FIRMNESS AND MOUTHMELT COMPARABLE TO COCOA BUTTER BASED CHOCOLATE PRODUCTS.
Patent MY-105525-A (MY)
Title: Anti-blister circuit
Inventor: GENE KARL SENDELWECK
IPC: H04N5/57
Filed: 1990-04-04
Abstract: AN ANTI-BLISTER CIRCUIT COMPRISES A FIRST DETECTOR (Q1.R1.R2.R3) FOR DETECTING AMPLITUDE EXCURSIONS OF A SIGNAL WITH LUMINANCE INFORMATION BEYOND A WHITE LEVEL THRESHOLD DURING EACH HORIZONTAL SCAN. THIS ENABLES THE CIRCUIT TO BE MORE SENSITIVE BY RESPONDING TO EXCURSIONS OCCURRING DURING EACH HORIZONTAL SCANNING LINE. A FIRST TIMER (C1, R5), RESPONSIVE TO THE FIRST DETECTOR, PROVIDES A FIRST CONTROL SIGNAL RELATED TO A MINIMUM DURATION OF EACH AMPLITUDE EXCURSION OF THE SIGNAL BEYOND THE THRESHOLD. THIS ENABLES THE CIRCUIT TO AVOID CONTROLLING BEAM CURRENT, FOR EXAMPLE BY REDUCING CONTRAST, RESPONSIVE TO SIGNAL PEAKS WHICH ARE TOO SHORT TO CAUSE BLISTERING OR WARPING. FINALLY, A SWITCH (Q2) AND SECOND TIMER (C2, R6), RESPONSIVE TO THE FIRST CONTROL SIGNAL, PROVIDE A SECOND CONTROL SIGNAL WHICH FALLS AT A FIRST RATE TO REDUCE BEAM CURRENT, FOR EXAMPLE BY REDUCING CONTRAST, DURING EACH MINIMUM DURATION AMPLITUDE EXCURSION AND WHICH RISES AT A SECOND RATE TO PERMIT THE BEAM CURRENT TO INCREASE AFTER TERMINATION OF THE AMPLITUDE EXCURSION, UNTIL THE NEXT MINIMUM DURATION EXCURSION. THE TIME CONSTANT FOR THE SECOND RATE IS MUCH GREATER THAN THE TIME CONSTANT OF THE FIRST RATE. (FIG. 1)