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| Number | Title | Issue Date |
| 7231266 | Digital control device and program A digital control device for tracking a sine wave according to the present invention has a compensator, a control object and a feedback gain. An input into the compensator is a signal obtained by subtracting a control quantity from a reference value. An input into t... | 06/12/2007 |
| 7001492 | Systems for electroplating metal onto a layer of low conductivity material A method of electroplating metal onto a low conductivity layer combines a potential or current reversal waveform with variation in the amplitude and duration of the applied potential or current pulse. The method includes, over time, varying the duration of the pulse... | 02/21/2006 |
| 6689269 | Method for electrochemically processing material The invention relates to a method for electrochemically processing a workpiece (61) in which a pulsating or alternating electrical voltage is applied between the workpiece and a workpiece electrode (62) which are arranged at a distance from one another in... | 02/10/2004 |
| 5985108 | Controlling apparatus for continuous electrolytic ion water producing apparatus A controlling apparatus which can control a continuous electrolytic ion water producing apparatus so that an excess current when the electrolyzing strength is not adjusted appropriately can be prevented with certainty and harmless electrolytic ion water c... | 11/16/1999 |
| 5833835 | Method and apparatus for electrochemical machining by bipolar current pulses Method of electrochemically machining an electrically conductive workpiece (2) in an electrolyte by applying bipolar electric pulses between the workpiece (2) and an electrically conductive electrode (6), one or more current pulses of normal polarity alte... | 11/10/1998 |
| 5374341 | Water electrolyzer In the water electrolyzer, an electrolyzing section has electrodes for electrolyzing raw water. The water pressure sensor detects pressure of raw water introduced into the electrolyzing section. A driver circuit adjusts electric power supplied to the elec... | 12/20/1994 |
| 5328574 | Water treatment process for electrolysis, in particular for water decarbonization, and apparatus for carrying out this process The present invention concerns a process for water treatment by electrolysis, particularly for decarbonizing water, as well as an apparatus for carrying out this process. This process is characterized in that a metal is chosen for the cathode (1) whose re... | 07/12/1994 |
| 5324398 | Capacitive discharge control circuit for use with electrolytic fluid treatment systems An electrolytic filter system (16) is disclosed for use in treating fluid provided by a fluid source (12) to a supplied environment (14). The system includes an electrolytic cell (18), whose operation is governed by a control circuit (20) to allow a desir... | 06/28/1994 |
| 5250160 | Apparatus and method for disinfecting a contaminated object A system and method for applying a disinfectant solution which may include a salt and a buffer to an instrument, object or mass wherein the solution is selectively rendered disinfecting and neutral by impressing a voltage across it to ionize an unstable s... | 10/05/1993 |
| 5227052 | Water conditioning apparatus having reaction plates coupled to an astable oscillator A water condition apparatus having a water conditioning system for water or any other similar liquid cleaning, where the water conditioning system includes an adjustable control unit, with a power supply, and a reaction cell with inlet and outlet pipes fo... | 07/13/1993 |
| 5221442 | Method and apparatus for electrolytic treatment In a process of surface-roughening of an aluminum support for a printing plate using an AC electrolytic etching apparatus, changes of the current waveform, particularly changes of the time required for the current to reach its peak value due to variations... | 06/22/1993 |
| 5181154 | Circuit arrangement for optimal current generation in processes of electrochemically initiated plasma-chemical layer production A circuit arrangement for current supply in processes of electrochemically initiated plasma-chemical layer production. It is preferably applied in the plasma-chemical conversion of electrochemically pre-formed layers, e.g. on light metals. The output of t... | 01/19/1993 |
| 5091152 | Apparatus for electrically destroying targeted organisms in fluids The invention pertains to a method and apparatus for destroying a predetermined living organism in fluid, whereby a predetermined current having a specific waveform and frequency is applied to the fluid in order to destroy the predetermined living organis... | 02/25/1992 |
| 4936957 | Thin film oxide dielectric structure and method A metallic oxide such as aluminum oxide of significantly improved electrical properties is disclosed. The method of oxide formation includes a combination of soft porous anodization followed by transformation to a hard barrier form of oxide using inter al... | 06/26/1990 |
| 4863579 | Power supply system for electrolytic processing apparatus A power supply system for an electrolytic processing apparatus which uses a discharge of pulses between a work and electrode including a discharge section having plural capacitors, rectifiers connected the capacitors so as to prevent reversing of current ... | 09/05/1989 |
| 4861450 | Power supply system for electrolytic processing apparatus A power supply system is provided for an electrolytic processing apparatus of the type which has an electrode positioned to oppose a work within an electrolyte and which processes and finishes the work by discharge of at least two modes of pulses of diffe... | 08/29/1989 |
| 4839002 | Method and capacitive discharge apparatus for aluminum anodizing An improved electrical power control apparatus and method for use in an aluminum anodizing system includes a pulsed DC power supply and an automatic switchable shunt discharge unit connected in parallel across the anodizing cell. The cell, consisting of a... | 06/13/1989 |
| 4822469 | Electrical power supply for an electrolytic gas generator An electrical power supply for an electrolytic gas generator includes an input network provided with a first rectifying-flattening circuit for generating a DC voltage from an AC power source voltage input thereto and an output network provided with a swit... | 04/18/1989 |
| 4797186 | Method and apparatus for operating a fuel cell in combination with an electrochemical cell to produce a chemical product A method and apparatus is disclosed for operating a fuel cell 14 which produces electrical energy in combination with an electrochemical cell 12 which uses electrical energy to produce a chemical product. The electrolysis cell produces an oxidant for use ... | 01/10/1989 |
| 4792384 | Method and apparatus for operating a fuel cell in combination with an electrochemical cell to produce a chemical product A method and apparatus is disclosed for operating a fuel cell 14 producing electrical energy in combination with an electrochemical cell 12 using electrical energy to produce a chemical product. The electrolysis cell produces hydrogen for use as a fuel in... | 12/20/1988 |
| 4666567 | Automated alternating polarity pulse electrolytic processing of electrically conductive substances A method and apparatus for electroplating the surface of a conductive substrate using an electroplating solution having a low concentration of plating ions. Forward and reverse polarity current pulses are alternatively provided between the part to be plat... | 05/19/1987 |
| 4655888 | Method and apparatus for the electroerosive working of workpieces In the electroerosive machining of workpieces with the aid of a tool electrode, a pulse-like d.c. voltage is applied between the workpiece and electrode, the applied voltage being in the form of pulse groups where the pulse groups are formed of individual... | 04/07/1987 |
| 4517059 | Automated alternating polarity direct current pulse electrolytic processing of metals Disclosed is a method and apparatus for electrolytic processing of a metal surface which, in a preferred embodiment, is anodization of an aluminum or aluminum alloy surface. An apparatus and method is provided which automatically senses the process voltag... | 05/14/1985 |
| 4478689 | Automated alternating polarity direct current pulse electrolytic processing of metals Disclosed is a method and apparatus for electrolytic processing of a metal surface which, in a preferred embodiment, is anodization of an aluminum or aluminum alloy surface. An apparatus and method is provided which automatically senses the process voltag... | 10/23/1984 |
| 4383900 | Apparatus and method for measuring the IR drop free cathodic protection potential created by a rectifier and controlling rectifier operation to achieve a desired level thereof An electronic circuit for measuring the IR drop free potential of a cathodically protected structure includes a shunting transistor which is periodically pulsed on to shunt or electrically connect the output lines of a rectifier to force the voltage and c... | 05/17/1983 |
| 4011152 | System for autocontrolling and regulating the average value of the voltage applied to processes for the electrolytic coloring of anodized aluminum Apparatus for electrolytically coloring anodized aluminum comprises a power transformer whose secondary winding has one phase connected directly to the charge and its other phase connected to the charge through two anti-parallel thyristors. One of the thy... | 03/08/1977 |
| 4009091 | Skipping sine wave pulse plater system A pulse plating system wherein the duty cycle is controlled by skipping pulses in producing the output signal. The circuitry for controlling the skipping of the pulses can either be analog or digital type circuitry.... | 02/22/1977 |
| 3996125 | Apparatus for electrolytically processing aluminium material An apparatus for electrolytically processing aluminium material comprising rectifier means for supplying a pulse power to the electrodes, at least one of which is the aluminium material to be processed, and controller means for supplying a control signal ... | 12/07/1976 |
| 3975254 | Forward-reverse pulse cycling anodizing and electroplating process power supply A forward-reverse pulse cycling anodizing and electroplating process power supply wherein the forward-reverse cycle time, the ratio of positive to negative pulses during the cycle time, the width of the individual pulses and the voltages of the pulses are... | 08/17/1976 |
