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:
Sep. 15, 1992
Filed:
Oct. 09, 1990
Applicant:
Inventor:
Mohamed A Hilal, Madison, WI (US);
Assignee:
Wisconsin Alumni Research Foundation, Madison, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
307245 ; 307306 ; 505860 ;
Abstract
A superconductive switching device includes an elongated gate which is circumferentially spirally overwound by a trigger. Both the gate and the trigger are superconductive, but the resistance of the trigger is much smaller than the normal resistance of the gate. Only a relatively small current is needed to cause the device to switch from a closed configuration where current flows through the switching device to a closed configuration where current flows to a load. Operation of the switching device is suitable for use with high frequencies and, with such frequencies, the switching device operates in a cyclical manner.