Telephone circuit surge protection module
AssigneeCirca telecom, USA, Inc.
InventorsJay Edward Spooner, David William Crepeau, Harry Raymond Braunstein, Ryan James Cramer
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AssigneeCirca telecom, USA, Inc.
InventorsJay Edward Spooner, David William Crepeau, Harry Raymond Braunstein, Ryan James Cramer
Estimating the term…
A surge protection device has a modular construction so that a manufacturer can assemble the parts in any combination desired by a customer. This eliminates any need to maintain large varieties of surge protection modules in inventory. The modular construction includes a housing having a plurality of bores formed therein into which is press fit long pins and short pins for electrical communication with an external power source and an internal customer telephone circuit, respectively. The housing further includes a pair of recesses into each of which may be press fit a positive temperature coefficient resistor. A first embodiment of spring clips helps hold the positive coefficient resistors in place and provides needed electrical contacts, and a second embodiment of spring clips further includes an elongate part that extends to a test point opening formed in a cover for the modular device. The modular assembly may include either a gas tube or a solid state surge protector, a fail safe device, an insulator member that is melted by the fail safe device when needed, a backup air gap formed in two different ways, and conductive shunt bars for use when the spring clips are not used.
A telephone circuit surge protection assembly of the type disposed at the entrance into a building having at least one telephone circuit inside said building, comprising:
Dependencies are inferred from the claim text.