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Control Coil Arrangement for a Rotating Machine Rotor

Description: A rotating machine (e.g., a turbine, motor or generator) is provided wherein a fixed solenoid or other coil configuration is disposed adjacent to one or both ends of the active portion of the machine rotor for producing an axially directed flux in the active portion so as to provide planar axial control at single or multiple locations for rotor balance, levitation, centering, torque and thrust action. Permanent magnets can be used to produce an axial bias magnetic field. The rotor can include m… more
Date: May 5, 1999
Creator: Shah, Manoj R. & Lewandowski, Chad R.
Partner: UNT Libraries Government Documents Department
open access

Stator for Rotating Electrical Machine Having Multiple Controlwindings

Description: A rotating electric machine is provided which includes multiple independent control windings for compensating for rotor imbalances and for levitating/centering the rotor. The multiple independent control windings are placed at different axial locations along the rotor to oppose forces created by imbalances at different axial locations along the rotor. The multiple control windings can also be used to levitate/center the rotor with a relatively small magnetic field per unit area since the rotor … more
Date: May 5, 1999
Creator: Shah, Manoj R. & Lewandowski, Chad R.
Partner: UNT Libraries Government Documents Department
open access

Polymer Coating for Immobilizing Soluble Ions in a Phosphate Ceramic Product

Description: A polymer coating is applied to the surface of a phosphate ceramic composite to effectively immobilize soluble salt anions encapsulated within the phosphate ceramic composite. The polymer coating is made from ceramic materials, including at least one inorganic metal compound, that wet and adhere to the surface structure of the phosphate ceramic composite, thereby isolating the soluble salt anions from the environment and ensuring long-term integrity of the phosphate ceramic composite.
Date: May 5, 1999
Creator: Singh, Dileep; Wagh, Arun S. & Patel, Kartikey D.
Partner: UNT Libraries Government Documents Department
open access

Method for Producing Chemically Bonded Phosphate Ceramics and for Stabilizing Contaminants Encapsulated therein Utilizing Reducing Agents

Description: Known phosphate ceramic formulations are improved and the ability to produce iron-based phosphate ceramic systems is enabled by the addition of an oxidizing or reducing step during the acid-base reactions that form the phosphate ceramic products. The additives allow control of the rate of the acid-base reactions and concomitant heat generation. In an alternate embodiment, waste containing metal anions is stabilized in phosphate ceramic products by the addition of a reducing agent to the phospha… more
Date: May 5, 1999
Creator: Singh, Dileep; Wagh, Arun S. & Jeong, Seung-Young
Partner: UNT Libraries Government Documents Department
open access

Method for the Removal of Ultrafine Particulates from an Aqueous Suspension

Description: A method of separating ultra-fine particulate from an aqueous suspension such as a process stream or a waste stream. The method involves the addition of alkali silicate and an organic gelling agent to a volume of liquid, from the respective process or waste stream, to form a gel. The gel then undergoes syneresis to remove water and soluble salts from the gel-containing the particulate, thus, forming a silica monolith. The silica monolith is then sintered to form a hard, nonporous waste form.
Date: March 5, 1999
Creator: Chaiko, David J.; Kopasz, John P. & Ellison, Adam J. G.
Partner: UNT Libraries Government Documents Department
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