| Patents for B23H 1 - Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric (3,662) |
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| 07/26/1988 | US4760233 Drilling confirming apparatus of electric discharge machining system |
| 07/13/1988 | CN87101259A Method and apparatus for purging eroding zone during electroerosive countersisnking |
| 07/06/1988 | EP0273380A2 Power supply system for electrolytic processing apparatus |
| 07/05/1988 | US4755651 Liquid level setting means for electric discharge machine |
| 06/29/1988 | EP0272640A2 Method and device for flushing the erosion zone during electroerosive cavity sinking |
| 06/28/1988 | US4754115 High speed electrical discharge machining by redressing high resolution graphite electrodes |
| 06/16/1988 | WO1988004211A1 Apparatus for discharge machining |
| 06/14/1988 | US4751363 Automatic turn-on fine finish circuit for electrical discharge machining |
| 06/01/1988 | EP0268934A1 Method and device for the energy supply to an electrostatic precipitator |
| 06/01/1988 | CN87107913A Pulse generator for spark-erosive metal working |
| 05/25/1988 | EP0268109A2 Pulse generator for electrical discharge machining |
| 05/19/1988 | WO1988003453A1 Method and apparatus for discharge machining |
| 05/19/1988 | WO1988003452A1 Electrical discharge machining by redressing electrodes |
| 05/11/1988 | EP0266570A1 Device for mounting the electrospark machining electrode |
| 04/19/1988 | US4739145 System for positioning and transferring EDM electrodes |
| 04/07/1988 | WO1988002294A1 Device for electro-erosive piercing of openings in parts |
| 04/06/1988 | CN87103438A Electric spark processing pulse power supply of ignition |
| 03/30/1988 | EP0261546A2 transparent electrical discharge machining fluid |
| 03/22/1988 | US4733058 Fail transistor detection and display system for electrical discharge machining apparatus |
| 03/22/1988 | US4733040 Method for the controlled withdrawal movement of an electrode in an electroerosion machine |
| 03/10/1988 | WO1988001549A1 Apparatus for controlling wire cut discharge machining |
| 03/10/1988 | WO1988001548A1 Processing liquid supply control system for wire cut electric discharge machines |
| 03/08/1988 | US4730094 Electric spark machining apparatus |
| 03/01/1988 | US4728764 Apparatus for detecting discharge gap in electric discharge machining |
| 02/16/1988 | US4725705 Method and apparatus for electric discharge machining with adaptive feedback for dimensional control |
| 01/19/1988 | US4720616 Polarity reversal pulsing method and apparatus for EDM |
| 01/13/1988 | EP0252239A2 Method and device for the supervision of a spark erosion process in a spark erosion machine |
| 01/13/1988 | EP0187770B1 Electric circuit for electroerosion machining |
| 01/12/1988 | US4719327 Electrical discharge machining power supply |
| 12/30/1987 | WO1987007860A1 Discharge machining controller |
| 12/15/1987 | US4713516 Pulse generator for spark erosive metal working |
| 12/09/1987 | EP0248509A2 Electrical discharge machining center |
| 12/01/1987 | US4710603 Electric discharge machining power source |
| 10/27/1987 | US4703144 EDM control system to maximize efficiency by controlling the gap width |
| 10/14/1987 | EP0241165A2 Electrical discharge machining apparatus with exchangeable electrode refeed cartridge |
| 10/13/1987 | US4700038 Method and apparatus for measuring the rate of wear of an EDM electrode tool |
| 10/06/1987 | US4698543 Electrode for electrical discharge machining |
| 09/22/1987 | US4695696 Electric discharge machine with control of the machining pulse's current value in accordance with the delay time |
| 08/19/1987 | EP0134191B1 Machining fluid for electric discharge machining |
| 07/29/1987 | CN86104551A Method for controlling with drawal movement of countersink electrode in electroerosion machine |
| 07/21/1987 | US4681997 Wire-cut, electric discharge machining power supply unit |
| 07/08/1987 | EP0228247A2 Corona discharge treating system |
| 07/07/1987 | US4678885 Power supply circuit for spark erosion |
| 07/07/1987 | US4678884 Wire discharge machining power source |
| 06/24/1987 | EP0226215A2 Electric spark machining apparatus |
| 06/23/1987 | US4675490 Method and apparatus for controlling electrode position in an electric discharge machine by counting feedback pulses and repeatedly adding the count |
| 06/09/1987 | US4672161 EDM method and apparatus with trapezoidized short-duration pulses |
| 06/03/1987 | EP0223861A1 Power source for discharge machining |
| 06/02/1987 | US4670635 Multi-electrode electrical discharge machining apparatus |
| 05/27/1987 | DE3539643A1 Device for detecting the burning voltage on the operating gap of a spark-erosion machine |
| 05/20/1987 | EP0222023A1 Device for confirming formation of holes in discharge machining apparatus |
| 05/19/1987 | US4667079 Electrode retraction control system of electric discharge machine |
| 05/13/1987 | EP0221422A1 Electrical discharge machining medium |
| 05/06/1987 | EP0220819A2 D.C. motor drive EDM head |
| 04/21/1987 | US4659894 Capacitor-type HF power supply for electrical machining |
| 04/15/1987 | EP0218340A1 Method and apparatus for electric discharge machining |
| 04/09/1987 | WO1987001981A1 Apparatus and method for working electrically conductive materials by electric erosion |
| 04/08/1987 | EP0217188A1 Electroerosive machining method and apparatus |
| 04/07/1987 | US4655888 Method and apparatus for the electroerosive working of workpieces |
| 04/02/1987 | DE3631331A1 Machining fluid for electrical discharge wire cutting of a workpiece |
| 03/31/1987 | US4654499 EDM electrode assembly and method of making and using same |
| 03/31/1987 | US4654497 Contact sensing apparatus in electric discharge machine |
| 03/18/1987 | CN86106290A Electroerosion process and electroerosion machine for performing the process |
| 03/10/1987 | US4649255 EDM using a partition member to separate hydrocarbon and water liquids in the work tank |
| 03/03/1987 | US4647748 Maintenance, preservation, epoxy glue, clamping, curing, discharging, machining, plates |
| 02/25/1987 | EP0211800A1 Electroerosion process and installation therefor |
| 02/25/1987 | EP0211310A2 Method for forming surface layer by electric discharge process |
| 02/25/1987 | CN85106026A Operating fluid for electrospark machining |
| 02/17/1987 | US4644125 D.C. motor driven EDM head |
| 02/10/1987 | US4642444 Silicone oil, hydrocarbon oil water |
| 01/31/1987 | CN86101343A Multifunctional lathe for polycrystal diamond tools |
| 01/28/1987 | EP0209792A1 Process for controlled return traverse motion of a lowering electrode in an electroerosion machine |
| 01/20/1987 | US4638141 Modular EDM system |
| 12/31/1986 | CN85104689A Circuit arrangement for producing eroding pulses on a spark erosion installation |
| 12/30/1986 | US4633053 Electrical discharge machine with automatically replaceable electrodes |
| 12/24/1986 | CN85104690A Method and apparatus for the electroerosive working of workpieces |
| 12/09/1986 | US4628170 EDM using two separate dielectric fluids and a system for maintaining segregation of the fluids |
| 12/04/1986 | WO1986006996A1 Power source for discharge machining |
| 12/04/1986 | WO1986006995A1 Device for confirming formation of holes in discharge machining apparatus |
| 12/02/1986 | US4626332 Flushing fluid recycling system for electroerosion |
| 11/18/1986 | US4623773 Electrospark machining solution |
| 11/11/1986 | US4622449 Using the weight of the electrode or workpiece to control EDM working conditions |
| 10/29/1986 | CN85109147A Spark erosion machine with a fixed machine table and lowerable working container for the electrolyte |
| 10/08/1986 | EP0196997A2 Electroerosive machining method and apparatus |
| 09/30/1986 | US4614854 Wire EDM control circuit for rough and finished machining |
| 08/13/1986 | EP0190710A1 Electric discharge machining electrode and method for producing the same |
| 08/13/1986 | EP0190381A1 Electrical generator for the spark machining of metal |
| 07/29/1986 | US4603391 Feed-deviation preventive numerically controlled EDM method and apparatus |
| 07/23/1986 | EP0187770A1 Electric circuit for electroerosion machining. |
| 07/23/1986 | EP0187738A1 Electric circuit for electroerosion machining |
| 06/25/1986 | EP0185101A1 Power source for discharge machining |
| 06/24/1986 | US4596916 Parting-line EDM with selectively actuated fluid flows |
| 06/24/1986 | US4596066 Machining center |
| 05/20/1986 | US4590353 Electric discharge machining power source |
| 05/20/1986 | US4590352 Dry-cut EDM with debris sweeping means |
| 04/23/1986 | EP0178330A1 Power source for wire cut electrospark machining |
| 04/22/1986 | US4584451 Wire EDM with guide member changer |
| 04/22/1986 | US4584450 Method of preparing a machining fluid for electroerosion |
| 04/15/1986 | US4582974 Electric discharge machine including means for detecting abnormal discharge conditions |
| 04/02/1986 | EP0176224A1 Polarity reversal pulsing method and apparatus for EDM |