Electricity: electrical systems and devices – Safety and protection of systems and devices – High voltage dissipation
Reexamination Certificate
2005-10-05
2011-12-20
Barnie, Rexford (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
High voltage dissipation
C361S056000, C361S111000
Reexamination Certificate
active
08081413
ABSTRACT:
An intrinsically safe network switch (200) includes five electronically isolated ports, four for connections in hazardous areas (206-1, 206-2, 206-3, 206-4) and one for receiving an unsafe Ethernet input (204). The device may use 10/100 mbps Ethernet cables and connectors and provides speed and activity LED indicators for each port. The device may be din rail-mountable, wall mountable, or desk mountable, and includes an integral heat sink for cool operation. The device incorporates internal barriers and isolated circuitry to guarantee safety and high-integrity signals with resistance to ambient EMI/RFI radiation. This network switch (200) could be any Ethernet communication devices such as hub, managed or unmanaged switch etc. Also, it could have total “n” number of ports (isolated or un-isolated) with 1 port for safe area and “n−1” port of hazardous area. The number of ports for safe and hazardous area can be varied to meet specific application requirements.
REFERENCES:
patent: 4241305 (1980-12-01), Dickerson
patent: 4598331 (1986-07-01), Legatti
patent: 4691384 (1987-09-01), Jobe
patent: 5014156 (1991-05-01), Bruch et al.
patent: 6111738 (2000-08-01), McGoogan
patent: 6397322 (2002-05-01), Voss
patent: 6608264 (2003-08-01), Fouladpour
patent: 7236342 (2007-06-01), Vazach et al.
patent: 2001/0031046 (2001-10-01), Troibner et al.
patent: 2002/0063621 (2002-05-01), Tseng et al.
patent: 2002/0097532 (2002-07-01), Voldman
patent: 2004/0085240 (2004-05-01), Faust
patent: 41 30 704 (1993-05-01), None
patent: 717485 (1996-06-01), None
Havens, Phillip “LAN/WAN Ethernet Overcurrent and Overvoltage Protection” Electronic Design, Penton Media, Cleveland, Ohio, US; vol. 48, No. 9; May 1, 2000; pp. 126, 128 (XP000945789).
Kothari Ajay
Molleti Naresh
Shah Parag
Azonix Corporation
Barnie Rexford
IP Authority, LLC
Mai Tien
Soundararajan Ramraj
LandOfFree
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