Superconducting current limiting apparatus
Patent 4994932 Issued on February 19, 1991. Estimated Expiration Date: 
January 26, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 26, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3529210 3691491 3715703 Josephson current regulator Patent #: 4459495 Inventors
ApplicationNo. 471697 filed on 01/26/1990US Classes:361/19, Superconductor protective circuits323/360, Superconductive338/325, With three or more terminals361/58, Impedance insertion361/93.9, Current limiting505/850, Protective circuit: (Class 361/19)505/881Resistance device responsive to magnetic field: (Class 338/32S)ExaminersPrimary: DeBoer, Todd E.Attorney, Agent or FirmInternational ClassH02H 009/02Foreign Application Priority Data1987-11-09 JPAbstractA superconducting current limiting apparatus includes a first container, a superconducting current limiting element accommodated in the first container, a refrigerant filling the first container for cooling the superconducting current limiting element accommodated in the first container, a second container for accommodating the first container in such a manner that the first container is heat insulated, and a conductor for connecting the superconducting current limiting element to an external power supply system. Such a superconducting current limiting apparatus can be used to limit a short-circuit current. It can be incorporated in a short circuit controlling superconducting system.Other References
Field of SearchSuperconductor protective circuitsFault suppression (e.g., Petersen coil) Impedance insertion Circuit interruption by thermal sensing With fuse Transient responsive Including superconductivity Superconductive INRUSH CURRENT LIMITERS SELF-REGULATING (E.G., NONRETROACTIVE) With three or more terminals Protective circuit: (Class 361/19) Power supply, regulation, or energy storage system: (Class 323) Resistance device responsive to magnetic field: (Class 338/32S) Cooling, or feeding, circulating, or distributing fluid; in superconductive apparatus: (Class 174/15CA) Magnetic or electrical effect cooling Method of cooling Superconductive type | |
