Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Patent
1992-06-15
1993-11-30
Thompson, Gregory D.
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
174 5051, 174 5052, 361703, 361721, 361827, H05K 720
Patent
active
052671224
ABSTRACT:
An optical network unit for field installation adjacent to an optical fiber transmission line, for separating multiplexed video and telephony signals for delivery to subscribers residences as electrical signals over metallic drop cables, has a hollow housing formed of heat-conductive material. The unit has a sealing front cover and rear cover, a cable entrance port for cable connections, and a backplane assembly mounted in the housing which incorporates optical-to-electrical signal conversion components and connectors for electrical signals. Slots are formed in the interior surfaces of the housing for positioning a plurality of printed circuit board cards for sliding installation into electrical contact with the backplane assembly. Internal fins each protruding from the housing into its hollow interior adjacent to one of the printed circuit board cards, promote heat dissipation from the cards via the internal fins to the exterior walls of the housing for cooling by external cooling fins exposed to the ambient atmosphere.
REFERENCES:
patent: 2811574 (1957-10-01), Guerrero
patent: 3264526 (1966-08-01), Wiggerman
patent: 3315128 (1967-04-01), Raymond
patent: 3364395 (1968-01-01), Donofrio et al.
patent: 4337499 (1982-06-01), Cronin et al.
patent: 4656559 (1987-04-01), Fathi
patent: 4685034 (1987-08-01), Tetsu et al.
patent: 4953058 (1990-08-01), Harris
patent: 5065278 (1991-11-01), Schultz
patent: 5089935 (1992-02-01), Ito
Gunter, John R., A Future Switched Video System., Feb. 1990, IEEE LCS Magazine, pp. 66-72.
Sato, Aoyagi and Kitami, Fiber Optic Analog-Digital Hybrid Signal Transmission Employing Frequency Modulation, IEEE Transactions on Communications, vol. Com-33, No. 5, May 1985.
Lo, Charnes N., A Hybrid Lightwave Transmission System for Sub-Carrier Multiplexed Video and Digital B-ISDN Services in the Local Loop, Journal of Lightwave Technology, vol. 7, No. 11, Nov. 1989, pp. 1839-1848.
Grubb and Robinson, A High-Quality Switched FM Video System, 1990 IEEE LCS Magazine, pp. 53-59, Feb. 1990.
Glover Hugh B.
Jones Clifford T.
Alcatel Network Systems, Inc.
Thompson Gregory D.
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