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:
Feb. 02, 1982
Filed:
Apr. 18, 1980
Bertram W Baumbach, Arlington Heights, IL (US);
Reliable Electric Company, Franklin Park, IL (US);
Abstract
A line protector for a communications circuit provides a gas tube surge voltage arrester for primary surge protection and a back up air gap arrester for secondary protection in the event of venting of the gas tube. The gas tube is housed in a metallic tubular element that forms one electrode at the air gap, the other electrode at the air gap be provided by the rim of one of the gas tube electrodes. The tubular element is initially formed of circular cross section, then deformed to an oval cross section to be dimensioned to provide engagements across the minor diameter of the oval with the gas tube when the latter is telescoped therewith. The fit provided by the aforesaid engagement establishes the correct air gap width.