Electricity: electrical systems and devices – Housing or mounting assemblies with diverse electrical... – For electronic systems and devices
Reexamination Certificate
2001-08-30
2003-02-11
Martin, David (Department: 2841)
Electricity: electrical systems and devices
Housing or mounting assemblies with diverse electrical...
For electronic systems and devices
C361S797000, C361S730000, C361S741000, C361S756000, C211S041170
Reexamination Certificate
active
06519162
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates generally to electronic equipment. More particularly, the present invention relates to equipment for use with a telecommunications device such as a splitter chassis.
BACKGROUND OF THE INVENTION
Telecommunications systems for transmitting voice and data to and from subscribers (i.e., residences and businesses) are known. An exemplary telecommunications system
10
is schematically shown in FIG.
1
. The system
10
includes a Main Distribution Frame
12
(MDF) for connecting digital subscriber lines
13
(DSLs) to internal lines
14
within a telephone server's central office
15
. The central office
15
frequently includes a DSLAM
18
(Digital Subscriber Line Access Multiplexer) and a voice switch
19
. The DSLAM
18
transmits data to and receives data from a communications network/backbone
21
. The voice switch
19
transmits voice signals to and receives voice signals from a communications network/backbone
23
. The networks
21
and
23
can be dedicated lines that are part of the same network. POTS splitter devices
16
(i.e., Plain Old Telephone Service splitter devices) are used at the central office
15
to combine data signals from the DSLAM
18
with voice signals from the voice switch
19
. By combining the signals, the signals can be simultaneously routed to a subscriber
25
through a single DSL
13
. Signals transmitted from subscribers
25
to the central office
15
are also routed through the POTS splitter devices
16
. At the POTS splitter devices
16
, the signals are split and directed to the DSLAM
18
and the voice switch
19
. Typically, the splitter devices
16
include low pass filters for removing the data content from any signals transmitted from the splitter devices
16
to the voice switch
19
. Since DSLAMs
18
frequently include high pass filters for removing the voice band, the splitter devices
16
usually do not include filters for filtering the voice content from the signals transmitted to the DSLAM
18
.
For most systems, it is desirable to maximize the splitter densities. To maximize splitter densities, multiple splitters are mounted on a printed circuit board to form a splitter card. To further maximize splitter densities, multiple splitter cards are mounted within the same chassis.
SUMMARY OF THE INVENTION
One aspect of the present invention relates to a protective panel mounted in a chassis for at least partially covering electronic components of a card within the chassis that would otherwise be exposed. Another aspect of the present invention relates to a method for using the protective panel.
A variety of advantages of the invention will be set forth in part in the description that follows, and in part will be apparent from the description, or may be learned by practicing the invention. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
REFERENCES:
patent: 5229192 (1993-07-01), Kober et al.
patent: 5498471 (1996-03-01), Hausdorf et al.
patent: 5559678 (1996-09-01), Fukuda et al.
patent: 5613906 (1997-03-01), Kikinis
patent: 5617296 (1997-04-01), Melville et al.
patent: 5642264 (1997-06-01), Cantrell
patent: 5783777 (1998-07-01), Kruse et al.
patent: 5892662 (1999-04-01), Verma
patent: 6291766 (2001-09-01), Komai
patent: 6327155 (2001-12-01), Niepmann et al.
“BroadWire™ 120: High Density ADSL Splitter”,ADC Telecommunications, Inc., 8 pages (Sep. 2000).
“BroadWire™ 240: High Density ADSL Splitter”,ADC Telecommunications, Inc., 8 pages (Sep. 2000).
“BroadWire™ 528: High Density ADSL Splitter”,ADC Telecommunications, Inc., 8 pages (Sep. 2000).
“DSL POTS Splitter Shelf Family”,Corning Cable Systems LLC, 8 pages (Sep. 2000).
“High Density xDSL Central Office Splitter: PS-1000 Series”,Wilcom, 2 pages (Apr. 2000).
“Product Release: Wilcom Announces Highest Density CO ADSL POTS Splitter Series”,Wilcom, 2 pages (Nov. 6, 2000).
“PS-1103 ADSL Central Office Line Filter Shelf: Quick Step Installation Instructions for PS-1103 Shelf”,Wilcom, 2 pages (Jun. 2000).
“PS-1103 CO POTS Splitter: High Density xDSL Central Office Splitter”,Wilcom, 2 pages (Jul. 2000).
“PS-1103 CO POTS Splitter: High Density xDSL Dentral Office Splitter”,Wilcom, 2 pages (Nov. 2000).
Anderson David J.
Van Doorn Matthias
Witty Amy J.
ADC Telecommunications Inc.
Levi Dameon E.
Martin David
Merchant & Gould P.C.
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