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:
Apr. 18, 1995
Filed:
Mar. 16, 1994
David A Rowe, Torrance, CA (US);
Binneg Y Lao, Rancho Palos Verdes, CA (US);
Sierra Monolithics, Inc., Redondo, CA (US);
Abstract
A superconducting gyroscope of the present invention includes a circuit which produces a magnetic field which is synchronous with the rate of rotation experienced by the gyroscope, a sensing circuit for converting the synchronous magnetic field into an electric signal, a first shield made of superconducting material for performing shielding of external stray fields, and a second shield disposed inside the first shield and made of superconducting material for expelling trapped residual magnetic flux. The synchronous magnetic field producing circuit includes a magnetic core shaped in a toroid with an air gap. The magnetic core may alternatively be formed in meandering shape by a plurality of separate magnetic core members with a plurality of air gaps therebetween. The sensing circuit includes at least one SQUID which can be directly coupled to the magnetic core. The sensing circuit may also include a superconducting pick-up coil surrounding a portion of the magnetic core for picking up the synchronous magnetic field and producing a London field, and an input coil magnetically coupled to the SQUID. The SQUID and the magnetic core and/or other elements can be fabricated on a single substrate or chip.