Communications circuit line protector and method of making...

Details Communications circuit line protector and method of making... Communications circuit line protector and method of making...

H - Electricity

01

T

26/112, 317/12.4

H01T 4/06 (2006.01) H01T 1/14 (2006.01)

Patent

CA 1148605

Baumbach Case 289 Abstract of the Disclosure A line protector for a communications circuit provides a gas tube sure voltage arrester for primary surge pro- tection 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.

372925

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