Electricity: conductors and insulators – Conduits – cables or conductors – Plural duct
Reexamination Certificate
2002-09-04
2003-11-11
Reichard, Dean A. (Department: 2831)
Electricity: conductors and insulators
Conduits, cables or conductors
Plural duct
C174S0450TD, C174S095000
Reexamination Certificate
active
06646203
ABSTRACT:
BACKGROUND OF THE INVENTION
(a) Field of the Invention
The present invention is related to a cable rack, and more particularly, to one containing multiple separators that are adjustable by number and by spacing to offer wider coverage of application for general purpose, lower production cost, and easier maintenance.
(b) Description of the Prior Art:
Usually many cables of connection for various purposes are required to be installed in a building, e.g. electric cable, communication cable or network cable and these cables come in different specifications. To maintain nice and tidy interiors and to facilitate repair and maintenance works, generally all cables are put together in a cable rack. The cable rack of the prior art as illustrated in
FIGS. 1 and 2
is comprised of a U-shape rack
10
and an upper lid
15
. Wherein, a latching edge
11
is formed respectively on the top edge of both side penals of the rack
10
, a hooking edge
16
corresponding to the latching edge
11
, is each formed on both sides of the upper lid for the upper lid
15
to be directly fastened to the rack to define an accommodation room.
However, there is no separator provided in the accommodation room since all cables are just put together in the same rack resulting in that all cable are vulnerable to be interfered by the magnetic field created by each live cable. Furthermore, as the cable frame is usually fixed on the wall or at a higher place, cables could easily fall on the ground when the upper lid
15
is opened to make service job more difficult.
Later an improvement of a cable rack made by the trade teaches that, as illustrated in
FIGS. 3 and 4
, a latch
21
curved inwardly is each provided on both side penals of a rack
20
to lock up an upper lid
26
. A lateral support fork
22
is each extending downward from said two latches
21
, and multiple pairs of tracks
23
are formed on the bottom inside the rack
20
to retain an inverse Y-shape separator
24
provided with a locking tag
240
each on two branches of the reverse Y-shape separator
24
. A covering plate
25
adapted with a limiting tag
250
is sandwiched by the support fork
22
while a unit of latching device comprised of a hook
27
and a press
28
corresponding to each other is each formed on both sides of the upper lid
26
for the upper lid
26
to be locked to the top edge of the rack
20
.
However, defectives of being vulnerable to mutual interference and prevention of an easy service job as observed with the prior art though have been corrected by the improvement, the track
23
for being integrated with the rack
20
and the separator
24
being fixed in position accordingly prevent adjustment as required. Furthermore, as the covering plate
25
to prevent falling of the cable is inserted through the space available between the latch
21
and the support fork
22
of the rack, the access to the rack
20
has to be made only from thee free end of the rack making the assembly and service difficult. During the molding process of the rack
20
, the latch
21
, the support fork
22
and the track
23
must be molded at the same time, making more difficult for the design of molds and the production process, thus higher production cost. Finally, the range of application is also limited due to that the location of the separator
24
is fixed.
As described above, the prior art known for common defectives including mutual interference, dropping cable, difficult access for service, and high production cost that significantly affect its common usage and economic benefits requires further improvement.
SUMMARY OF THE INVENTION
The primary purpose of the present invention is to provide an all-purpose cable rack that offers adjustment as required and easy assembly and service.
Another purpose of the present invention is to provide an all-purpose cable rack that permits lower production cost with higher economic benefits.
The foregoing object and summary provide only a brief introduction to the present invention. To fully appreciate these and other objects of the present invention as well as the invention itself, all of which will become apparent to those skilled in the art, the following detailed description of the invention and the claims should be read in conjunction with the accompanying drawings. Throughout the specification and drawings identical reference numerals refer to identical or similar parts.
Many other advantages and features of the present invention will become manifest to those versed in the art upon making reference to the detailed description and the accompanying sheets of drawings in which a preferred structural embodiment incorporating the principles of the present invention is shown by way of illustrative example.
REFERENCES:
patent: 406818 (1889-07-01), Cook
patent: 4907767 (1990-03-01), Corsi et al.
patent: 5089667 (1992-02-01), Goussin et al.
patent: 5274194 (1993-12-01), Belcher
patent: 5814767 (1998-09-01), Katz
patent: 6107575 (2000-08-01), Miranda
patent: 6384336 (2002-05-01), VanderVelde et al.
patent: 3335884 (1985-04-01), None
patent: 3426064 (1986-01-01), None
patent: 554702 (1993-08-01), None
patent: 2237938 (1991-05-01), None
patent: 2258092 (1993-01-01), None
Lei Leong C.
Nino Adolfo
Reichard Dean A.
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