Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2007-04-17
2007-04-17
Lam, Thanh (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
Reexamination Certificate
active
10528483
ABSTRACT:
A ring-spinning system for making yarn characterized in part by the replacement of the ring traveler configuration with only one rotating, floating ring that has an eye on its inner middle surface. This rotating, floating ring with the eye thereon performs the functions previously performed by the ring traveler configuration of twisting the fibers into yarn. The ring is kept suspended in space by the magnetic levitation system of the present invention. The floating ring is elevated by a well-controlled magnetic field generated by two sets of electromagnetic coils and a set of cylindrical rare earth permanent magnets. The floating ring is rotated around its center by the effect of winding the formed yarns over a rotating spindle at the center of the ring. Sensors and a feedback system are used to control the magnetic fields produced by the electromagnetic coils to maintain the ring in its central position.
REFERENCES:
patent: 2932152 (1960-04-01), Jackson
patent: 3851448 (1974-12-01), Sano et al.
patent: 5740666 (1998-04-01), Yamaguchi et al.
patent: 6049148 (2000-04-01), Nichols et al.
patent: 6223512 (2001-05-01), Koltze et al.
patent: 6446424 (2002-09-01), Thierron
patent: 6573628 (2003-06-01), Sloupensky et al.
patent: 2003/0080638 (2003-05-01), Shinozaki
Batra, Subhash K., Ghosh, Tushar K., Zeidman, Mishu I.; “An Integrated Approach to Dynamic Analysis of the Ring Spinning Process, Part I: Without Air Drag and Coriolis Acceleration”; Textile Research Journal; Aug. 1, 1988; pp. 309-317.
Batra, Subhash K., Ghosh, Tushar K., Zeidman, Mishu I.; “An Integrated Approach to Dynamic Analysis of the Ring Spinning Process, Part II: With Air Drag”; Textile Research Journal; Aug. 1, 1988; pp. 416-424.
Charara, A. & Caron, B.; “Magnetic Bearing: Comparison Between Linear and Nonlinear Functioning”; Proceedings of the Third International Symposium on Magnetic Bearings; Jul. 29-31, 1992; Radisson Hotel at Mark Center, Alexandria, Virginia; pp. 451-460.
DeBarr, A.E.; “A Descriptive Account of Yarn Tensions and Balloon Shapes in Ring Spinning”; Textile Institute; Nov. 26, 1957; pp. T58-T88.
DeBarr, A.E.; “The Physics of Yarn Tension and Balloon Shapes in Spinning, Winding and Similar Processes”; Textile Institute; Oct. 30, 1959; pp. T16-T38.
DeBarr, A.E., “The Role of Air Drag in Ring Spinning”; Textile Institute; Jan. 13, 1961; pp. T126-T139.
Dhar, D., Barrett, L.E., Knospe, C.R.; “Optimum Design of Decentralized Magnetic Bearings for Rotor Systems”; Proceedings of the Third International Symposium on Magnetic Bearings; Jul. 29-31, 1992; Radisson Hotel at Mark Center, Alexandria, Virginia; pp. 47-59.
Herzog, R.; “A Comparison Between “Passively”and “Actively”Controlled Magnetic Bearings”; Proceedings of the Third International Symposium on Magnetic Bearings; Jul. 29-31, 1992; Radisson Hotel at Mark Center, Alexandria, Virginia: pp. 223-231.
Meeker, David C., Maslen, Eric H., Noh, Myounggyu D.; “A Wide Bandwidth Model for the Electrical Impedance of Magnetic Bearings”; Dec. 1995; 3rdInternational Symposium on Magnetic Suspension Technology, Tallahassee, Florida: pp. 387-401.
Skenderi, Zenun, Oreskovic, Vladimir, Peric, Petar; “Determining Yarn Tension in Ring Spinning”; Textile Research Journal 71(4); Apr. 2001; pp. 343-350.
Abdel-Hady Faissal
Elmoghazy Yehia
Auburn University
Haverstock & Owens LLP
Lam Thanh
LandOfFree
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