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US 4,905,275 AGranted
Laminar type telephone protector block and interconnectable modular elements therefor
AssigneePorta Systems Corp.
InventorsCarl Meyerhoefer, Helmuth Neuwirth
Life of this patent
Estimating the term…
Abstract
A laminar type telephone protector block of quick clip type including grounding means incorporated into the individual laminae, and a novel protector module of gas tube type communicating with said grounding means.
Claims11
In combination, an improved laminar type telephone connector block and subscriber circuit protector module therefor;
- said connector block comprising a plurality of laminar elements in juxtaposed mutually parallel relation, and at least one elongated interconnecting means penetrating each of said laminar elements serving to maintain said laminar elements in integrated condition, said last-mentioned means providing interconnection with a source of ground potential;
- said laminar elements including a plurality of quick clip terminals having exposed ends thereon for the interconnection of circuit conductors accessible from side edges of said laminar elements;
- a plurality of integrally molded ground strips extending from said side edges of said laminar elements to contact said elongated interconnecting means;
- said protector module being of planar configuration corresponding in thickness to that of an individual laminar element and comprising mating housing and cover members, tip and ring contacts positioned within said housing member and contacting at one end thereof corresponding quick clip terminals on said block, a grounding contact positioned within said housing member and contacting said grounding strip at exposed mating ends thereof;
- and serially connected gas tube and fusible members communicating with said tip, ring and grounding contacts.
2 more elements
In an improved telephone subscriber circuit module for use with laminar type telephone connector blocks, the improvement comprising an outer housing and a cover therefor defining a hollow interior;
- tip, ring, and ground contacts extending outwardly of said housing and positioned to selectively engage corresponding contacts on said block;
- first and second gas tube elements interconnecting said tip and ring contacts to said ground contact to provide excess voltage surge protection;
- a length of spring wire of "U"-shaped configuration positioned between said first and second gas tube elements to be resiliently retained therebetween, said wire having a fusible insulative coating thereon normally preventing electrical communication between said gas tube elements, said fusible coating being fused upon the occurrence of a sustained current overload and connecting said gas tubes to said ground contact.
Dependencies are inferred from the claim text.