Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Patent
1982-05-28
1984-02-28
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
337 34, 361119, H02H 906
Patent
active
044344490
ABSTRACT:
A protector unit (30) for protecting tip-and-ring conductors of a telephone loop includes a pair of protector assemblies (40-40') which are supported within a common housing 932). A voltage protection subassembly (42) is connected electrically to a ground subassembly (44) for causing current associated with excessive voltage surges to be conducted to ground. Each protector assembly includes a heat coil subassembly (50) mounted on a dielectric half-base (51), together with a central office pin (57). The heat coil subassembly includes a line pin (61), an eyelet (62), disposed concentrically about the line pin and releasably secured to one end of the line pin in an initial position by a fusible bonding material, and a resistance wire (69), wound about the hub of the eyelet. One end of the wire is welded to the eyelet, and the other end is welded to the central office pin to establish a direct current path between the line pin and the central office pin. The two base halves and the components disposed thereon are held in mated position theretogether by the protector housing. A spring (43) between a cup (93) of the voltage protector subassembly and the housing maintains the voltage protection subassembly in engagement with the eyelet. Also, the spring is effective when current flow exceeds a predetermined level that is sufficient to cause the fusible bonding material to melt to cause the eyelet to be moved to a position where it engages a portion (86) of the grounding subassembly to establish a fault current path to ground potential.
REFERENCES:
patent: 2546824 (1951-03-01), Koliss
patent: 3573695 (1971-04-01), Geyer et al.
patent: 3849750 (1974-11-01), Baumbach et al.
patent: 4168515 (1979-09-01), Baumbach
patent: 4215381 (1980-07-01), Heisinger
patent: 4325100 (1982-04-01), Baumbach
Bell Telephone Laboratories Incorporated
Gurey S. M.
Moose Jr. Harry E.
LandOfFree
Protector unit for telecommunications circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Protector unit for telecommunications circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Protector unit for telecommunications circuits will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-761569