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:
Dec. 21, 1982
Filed:
Sep. 08, 1980
Leslie J Kettle, Chelmsford, GB;
Barry P Newton, Boreham, GB;
English Electric Valve Company Limited, Chelmsford, GB;
Abstract
A switch device comprising at least two switches (12, 13) connected in parallel in a first electric path; a timing device (3) for feeding at a required time, a switching impulse along a second electric path to the switches thereby switching at least one of them (12) to a conductive state so that current flows along the first path; and a transformer (18) having a primary (20) in the said first path and a secondary (17) in the said second path arranged so that the aforementioned current induces a further switching impulse or reinforces the first switching impulse thereby switching or assisting the switching of the other switch (13) to a conductive state.