Siecor Corporation

Siecor Puerto Rico, Inc.

William J Shannon

John Joseph Napiorkowski

Dan Kidd

Boyd Grant Brower

Mark P Cote

John P DuBois

John J Napierkowski

Robert A Crane

Telecommunications overvoltage protectors are sealed from environmental degradation by a gel. The gel is inserted in such a way as not to interfere with moving parts or air gaps in the protectors.

Overvoltage protectors sealed with gel

A telephone protector includes a rigid plastic packaged solid state switch which is clamped to prevent the switch from bursting to an open circuit condition.

Solid state primary telephone protector

A station protector module contains telephone company terminals and subscriber terminals. The module has apparatus for grounding the module in a network interface device and also has means for grounding upon extended grounding current flow through a surge protector in the module. The grounding apparatus becomes operative upon the melting of a fusible means. The surge protector is a single component bidirectional voltage sensitive switch.

Station protector module for network interface device

A surge arrester for telephone lines comprises a threaded metal enclosure for insertion into a threaded well of a station protector. The protective element within the threaded metal enclosure is a voltage sensitive solid state switch comprising a semiconductor chip sandwiched between two flat electrodes. One electrode is in contact with a metal plate which is in contact with a solder disc. The other electrode is in contact with a metal post disposed in, and extending through, a plastic spacer within the threaded metal enclosure.

Growing community of inventors

Saco, ME, United States of America

William J Shannon