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:
Jun. 28, 2011
Filed:
Jun. 16, 2005
Kevin Jonathan Hickman, Witney, GB;
Anthony John Salloway, Northampton, GB;
Kevin Jonathan Hickman, Witney, GB;
Anthony John Salloway, Northampton, GB;
Siemens Plc, Frimley, Camberley, Surrey, GB;
Abstract
A method of measuring a level of liquid cryogen, comprising the steps of immersing a liquid cryogen level probe in a liquid cryogen, applying a propagation current to the heater () to induce quench in at least an adjacent part of the superconductive material (); removing the propagation current from the heater; applying a measurement current to the superconductive material; and measuring () a voltage across the superconductive material thereby to determine the level of the liquid cryogen. In articular, the method comprises the steps of monitoring () the voltage across the superconductive material while the propagation current is being applied; and ceasing application of the propagation current in response to the detection of a voltage across the superconductive material which exceeds a certain threshold level.