The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 2018
Filed:
Aug. 11, 2015
Victoria Link Limited, Wellington, NZ;
Rowan Martin Walsh, Lower Hutt, NZ;
Christopher William Bumby, Wellington, NZ;
Rodney Alan Badcock, Lower Hutt, NZ;
Robert Andrew Slade, Porirua, NZ;
Zhenan Jiang, Lower Hutt, NZ;
Kent Anthony Hamilton, Lower Hutt, NZ;
Michael Graeme Fee, Wellington, NZ;
Rowan Martin Walsh, Lower Hutt, NZ;
Christopher William Bumby, Wellington, NZ;
Rodney Alan Badcock, Lower Hutt, NZ;
Robert Andrew Slade, Porirua, NZ;
Zhenan Jiang, Lower Hutt, NZ;
Kent Anthony Hamilton, Lower Hutt, NZ;
Michael Graeme Fee, Wellington, NZ;
Other;
Abstract
A superconducting current pump arranged to cause a DC electrical current to flow through a superconducting circuit accommodated within a cryogenic enclosure of a cryostat comprises a rotor external to the cryogenic enclosure and a stator within the cryogenic enclosure, the rotor and stator separated by a gap through which passes a thermally insulating wall of the cryogenic enclosure, the rotor and the stator comprising at least in part a ferromagnetic material to concentrate magnetic flux in a magnetic circuit across the gap between the rotor and the stator and through the wall, so that movement of the rotor external to the cryogenic enclosure relative to the stator within the cryogenic enclosure induces a DC transport current to flow around the superconducting circuit within the cryogenic enclosure. There is no coupling between a drive motor external to the cryogenic enclosure and an internal rotor which may introduce a path for heat leakage into the cryostat, in turn increasing the heat load and thus increasing the cooling power required to maintain the cold components within the cryogenic enclosure at the low operating temperature required.