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:
Jul. 21, 2009
Filed:
Oct. 16, 2007
George M. Kauffman, Hudson, MA (US);
George M. Kauffman, Hudson, MA (US);
Other;
Abstract
A protective device for transmitting electromagnetic signals of a desired frequency band from a source to a load comprises an outer conductor, an inner conductor extending coaxially within the outer conductor and a quarter wavelength shunt conductor. The shunt conductor is connected, at one end, to the inner conductor and is connected, at its other end, to the outer conductor by means of distributed capacitance through a dielectric insulator. A plurality of gas discharge tubes are connected at one end to the shunt conductor and at the other end to the outer conductor. In use, the inner conductor serves as the transmission line, the outer conductor serves as the return path and the quarter wavelength shunt conductor serves as an inductor for filtering out electromagnetic energy which falls outside the desired frequency band, the plurality of gas discharge tubes operating electrically in parallel with one another to discharge shunted voltages.