A dynamo electric machine for an aircraft gas turbine engine includes a housing 11 supporting a stator 13 of the dynamo electric machine, a rotor assembly 14 rotatably mounted in the housing 11 and including an elongate hollow rotor shaft 15, a main shaft 18 for connection at one end to the associated gas turbine engine assembly, said main shaft 18 extending coaxially within said hollow rotor shaft 15, and a sleeve-like member 21 of electrically insulating material between said rotor shaft 15 and said main shaft 18, said sleeve-like member 21 providing an electrically insulating driving connection between said main shaft 18 and said rotor shaft 15 whereby said main shaft 18 and said rotor shaft 15 rotate together.

Dynamo electric machines

Methods of using ozone have been developed which sterilize instruments and medical wastes, oxidize organics found in wastewater, clean laundry, break down contaminants in soil into a form more readily digested by microbes, kill microorganisms present in food products, and destroy toxins present in food products. The preferred methods for killing microorganisms and destroying toxins use pressurized, humidified, and concentrated ozone produced by an electrochemical cell.

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Electrochemical production of ozone and hydrogen peroxide

Magnetically hard compositions having high values of coercivity, remanence and energy product contain rare earth elements, transition metal elements and boron in suitable proportions. The preferred rare earth elements are neodymium and praseodymium, and the preferred transition metal element is iron. The magnetic alloys have characteristic very finely crystalline microstructures.

High energy product rare earth-iron magnet alloys

Bipolar plates and end plates for fuel cell stacks. The bipolar plates or end plates may include semi-conductive or conductive bodies, intricate features with close tolerances such as narrow flow channels and conduits with complex flow paths, integral resistive heating elements, internal catalytic reforming capability, integral heat exchanging structure, substantially flat and undistorted contact faces, integral sensors, and internal recuperative heat exchanging capacity. Methods of making bipolar plates and end plates for fuel cell stacks. The methods involve a range of integrated processing techniques that enable a flexible approach to bipolar and end plate design. In addition, the ability to reliably produce features on a small scale allows for the potential miniaturization of bipolar plates and end plates and is therefore ideally suited to further the development of small scale portable fuel cell systems.

Bipolar plates and end plates for fuel cells and methods for making the same

The invention provides an improved proton exchange membrane for use in electrochemical cells having internal passages parallel to the membrane surface, an apparatus and process for making the membrane, membrane and electrode assemblies fabricated using the membrane, and the application of the membrane and electrode assemblies to a variety of devices, both electrochemical and otherwise. The passages in the membrane extend from one edge of the membrane to another and allow fluid flow through the membrane and give access directly to the membrane for purposes of hydration.

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Membrane with internal passages to permit fluid flow and an electrochemical cell containing the same

Electrolytic production of ozone by a process wherein an oxygen-saturated mixture of water and oxygen, or air, is led along both sides of a solid electrolyte (1), which acts as an ion-exchange membrane and carries coatings (2,3) of electrically conductive materials, both on the cathode side and on the anode side, ozone being evolved, in addition to oxygen, on the anode side and, on the cathode side, the evolution of hydrogen being suppressed by the depolarizing effect of the oxygen which is entrained in the water stream, and merely water being formed. The electrolysis is carried out under an increased pressure. Individual electrolysis cell bounded by bipolar plates (6), and comprising a solid electrolyte (1), provided, in each case, with a surface coating (2,3), and centrally located between current-collectors (4) and adjoining open metallic structures (5). A plurality of individual cells integrated together between end plates (7), electrically connected in series and hydrodynamically connected in parallel, combined to form a block. Use in water-treatment, and as a component of chemical processes (oxidation processes).

Process for the synthetic production of ozone by electrolysis and use thereof

OF THE DISCLOSURE A permanent-magnet alloy having the formula RE(Col-u-v-w-x-yFeuM Xy)z wherein RE is samarium, cerium, cerium misch metal (MM), praseodymium, neodymium, lanthanum or mixtures thereof, X is Al, Cu or a mixture thereof, and 0.05 < u < 0.15 0.05 < y < 0.02 6.5 < z < 8.5 and M is at least one of Mnv, Crw and Vx wherein 0.003 ? v < 0.15 0.003 ? w < 0.10 0.003 ? x < 0.10.

Permanent-magnet alloy

Elektrode fur die Wasserelektrolyse, bestehend aus einem plattenformigen porosen Sinterkorper (1) aus Titan oder Titanlegierung, vorzugsweise Ti6A14V, dessen dem Elektrolyten zugewandte Seite mit einer Mischung von 20 mol-% Rutheniumoxyd und 80 mol-% tridiumoxyd beschichtet ist. Electrode for water electrolysis, consisting of a plate-like porous sintered body (1) made of titanium or titanium alloy, Ti6A14V preferably, the electrolyte facing side with a mixture of 20 mol% ruthenium oxide and 80 mol% is tridiumoxyd coated. In Sonderausfuhrung wird der Sinterkorper an seinem Umfang durch einen dichten glatten Ring begrenzt, welcher entweder aus demselben, aber kompakten Material (3) bestehen kann oder durch porenschliessende Infiltration eines Kunstharzes (4), bevorzugt Tetrafluorathylen, gebildet wird. In special version of the sintered body is bounded at its periphery by a dense smooth ring, which is either the same, but compact material (3) can be made or preferably tetrafluoroethylene, is formed by pore-closing infiltration of a synthetic resin (4).

Electrode for water electrolysis

Elektrolytische Herstellung von Ozon dadurch, dass ein an Sauerstoff gesattigtes Gemisch von Wasser und Sauerstoff oder Luft beidseitig an einem als lonenaustauschermembran dienenden Feststoffelektrolyten (1). Electrolytic production of ozone by the fact that a saturated oxygen mixture of water and oxygen or air on both sides of an ion exchange membrane serving as solid electrolyte (1). welcher sowohl auf der Kathoden- wie der Anodenseite Beschichtungen (2. 3) aus elektrisch leitenden Materialien tragt, entlanggefuhrt wird, wobei auf der Anodenseite neben Sauerstoff Ozon entwickelt wird und auf der Kathodenseite die Wasserstoffentwicklung durch die depolarisierende Wirkung des im Wasserstrom mitgefuhrten Sauerstoffs unterdruckt und lediglich Wasser gebildet wird. which bears both on the cathode as the anode side coatings (2, 3) made of electrically conductive materials, is guided along, in which ozone is developed on the anode side in addition to oxygen and can be suppressed to the cathode side, the hydrogen evolution by the depolarizing effect of the entrained in the water stream oxygen and only water is formed. Durchfuhrung der Elektrolyse unter erhohtem Druck. Carrying out the electrolysis under increased pressure. Einzelne Elektrolysezelle bestehend aus zentral angeordnetem, mit je einer Oberflachenbeschichtung (2. 3) versehenen. provided individual electrolytic cell consisting of a centrally positioned, each with a surface coating (2, 3). zwischen Stromkollektoren (4) und anschliessenden offenen metallischen Strukturen (5) gehaltenen Feststoffelektrolyten (1). between current collectors (4) and subsequent open metallic structures (5) solid electrolytes held (1). begrenzt durch bipolare Platten (6) Mehrere Einzelzellen zwischen Endplatten (7) zusammengefasst. bounded by bipolar plates (6) A plurality of single cells between end plates (7) are summarized. elektrisch in Serie, stromungstechnisch parallelgeschaltet, zu einem Block ver. einigt. electrically connected in series, flow-connected in parallel to a block ver. agrees. Anwendung bei der Wasseraufbereitung und als Bestandteil chemischer Verfahren (Oxydationsprozesse). Application in water treatment and as a component of chemical processes (oxidation processes).

Process and apparatus for the synthetic preparation of ozone by electrolysis, and its application

An electrolysis cell for water electrolysis, consisting of a synthetic polymer foil as a solid substance electrolyte having attached on both sides thereof finely porous and coarsely porous substances serving as electrodes, and two bipolar plates serving to provide electricity, whereby the finely porous substance carries the anode catalyst on the oxygen side and the solid electrolyte carries the cathode catalyst on the hydrogen side.

Anton Menth

Papers

Process for the synthetic production of ozone by electrolysis and use thereof

Permanent-magnet alloy

Electrode for water electrolysis

Process and apparatus for the synthetic preparation of ozone by electrolysis, and its application

Electrolysis cell for water dissolution