Electricity: conductors and insulators – Boxes and housings
Reexamination Certificate
2003-02-05
2004-07-27
Patel, Dhiru R (Department: 2831)
Electricity: conductors and insulators
Boxes and housings
C174S058000, C220S004020, C439S535000
Reexamination Certificate
active
06768055
ABSTRACT:
FIELD OF THE INVENTION
This invention involves an entry box for structured wiring installations in residential building structures such as a home or apartment, particularly an entry box for connecting communication cables. Telephone and video cables from outside a building structure are led to the entry box, and cables that service telephones, computers, faxes and other communication facilities within the building structure are connected to the entry cable in the box.
BACKGROUND OF THE INVENTION
With the development of new communication equipment, such as computers, fax machines, security systems, satellite and cable TV, internet, and telephone answering systems that are connected to communication cable, there has been an increase in the need for running more interior cable within a typical building structure. The typical wiring arrangement in new building structures is to run the interior communication cables from each plug location that will serve the communication equipment through the hollow walls of the building structure to a central connection point in the building structure. This usually is done by a telephone technician when the building is partially constructed. The cables typically include coaxial cables and telephone cables, and more cables extend to the central connection point.
When the construction of the building is substantially completed and the interior cables are to be activated, the technician installs a box, usually known as an “entry box,” at the central connection point, and the wires of the cable from outside the building are connected to the ends of the wires of the interior cables in the entry box. One service entry cable usually can serve several interior cables. In most cases, a phase splitter is to be positioned in the entry box interposed between the service entry cable and the interior cable leading to the communication equipment in the building structure so that the equipment can be operated simultaneously from one service entry cable.
The installation procedures used to install the service entry box in the typical hollow wall structure usually requires that a large hole be cut through a gypsum board or other wall board between the vertical studs in the wall at the central connection point. The hole is sized to fit the shape of the entry box that is to be installed. The entry box telescopes through the hole and its inside portion moves into the interior space of the hollow wall, and the end portions of the various cables are pulled from within the interior of the hollow wall into the entry box. A phase splitter and possibly other electrical connectors and modules typically will be attached to the entry box before the entry box is to be installed in the wall. Most of the cables that are to be connected to the a phase splitter or other modules within the entry box are bent at their end portions so that the ends of the cables can reach the connectors of the modules.
The bending of the end portions of the cables usually requires a substantial length of each cable end to be present in the entry box, taking up room in the box. In some cases the bending of the end portions of cables deteriorates the cables. Also, it is usually difficult for the installer to find room in the entry box for his hands, his tools, and for the multiple numbers of cables, particularly when the installer is bending the end portions of the cables to mate with the connectors. Once the connections of the cables have been made to the modules within the entry box, a cover is applied to it, closing the box about the cable ends, the phase splitter and any other modules in the box.
By placing the entry box into the hollow wall structure, the box occupies the hollow space in the wall and, therefore, the protrusion of the box from the wall can be minimized. However, this usually means that the cables that are to be fed to the box must be bent at their end portions so as to first enter the box and bent again after inside the box to conform to the connection of its module within the box. The bending of the cables, the threading of the cables into the box, and then the second bending of the cables and the making of the connection to the modules in the box is an arduous task for the installer.
It is to these problems that this invention is directed.
SUMMARY OF THE INVENTION
Briefly described, the present invention comprises an entry box, particularly for use for the entry of communication cable into a building structure. The invention effectively uses the hollow space within the typical hollow wall of a building structure at the position of an entry box to accommodate the end portions of the cables that are to be connected in the entry box.
When the entry box is to be installed, a hole in the wall board of the hollow wall will have been cut and the ends of the cables that are to be connected will have been drawn from the hollow wall through its hole.
The entry box includes a mounting plate and a cover. The mounting plate has one or more openings therein that register with the opening in the hollow wall. One of the mounting plate openings is a mounting plate cable opening for receiving the end portions of coaxial cables. The installer typically extends the free ends of the coaxial cables from the wall opening through the mounting plate cable opening and applies the mounting plate flush against the wall with the mounting plate cable opening registering with the wall opening.
The cover and the mounting plate are configured so as to form a receptacle there between, and a phase splitter and possibly other fixtures are supported on the interior surface of the cover. The phase splitter is mounted at a position on the cover so that when the cover is mounted to the mounting plate it is aligned with or “registers” with the mounting plate cable opening and with the opening in the wall board.
The installer usually connects the ends of the coaxial cables to the phase splitter when the cover is not mounted to the mounting plate but the phase splitter is within reach of the cables. Once the cables have been properly connected to the phase splitter and other wires are connected to their connections in the entry box, the cover is moved toward the mounting plate and attached to the mounting plate, thereby enclosing the cable ends and phase splitter within the entry box.
A feature of the invention is that as the cover is advanced toward the mounting plate with the cable ends connected to the phase splitter, etc., at least some of the end portions of the cables that have been extended through the opening in the mounting plate to the cover are moved back through the mounting plate cable opening and into the hollow interior of the wall. This results in at least some of the end portions of the cables not remaining in the receptacle formed by the mounting plate and cover and the space in the hollow wall behind the entry box is used for accommodating the end portions of the cables.
Another feature of the invention is that the phase splitter will have its connectors oriented toward a facing relationship with respect to the opening in the mounting plate, so that the end portions of the cables that extend through the opening in the wall do not have to be bent inside the entry box to make a connection to the phase splitter, etc. The ends of the cables that are connected to the phase splitter extend approximately rectilinearly from the phase splitter so that they extend back through the mounting plate cable opening and into the hollow wall. Therefore, a minimal length of the cables extend into the confines of the closed entry box, and the cables have a minimum number of bends at their end portions.
The mounting plate cable opening can be of a breadth, both width and height, to receive the cable ends in a pattern as required by the connectors of the phase splitter. In some instances, where it is desirable for the phase splitter to project from the cover through the mounting plate and into the wall opening, the cable opening of the mounting plate can be of a breadth larger than the phase splitter or other electrical fix
Patel Dhiru R
Thomas Kayden Horstemeyer & Risley
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