1. Field of the Invention
The present invention relates to an under-floor box, and, more particularly, to an under-floor box installed through an opening in a floor.
2. Description of the Related Art
In the work office environment and on convention floors there are often an assortment of electrically operated hardware each requiring one or more separate connections to electrical and telecommunication outlets. The versatility of an under-floor box allows for a remaking of the floor plan in the office and/or convention floor. Under-floor boxes may be positioned before the pouring of concrete on a floor, which thereby permanently positions the under-floor box and is often used in areas where high strength flooring is utilized.
In certain construction techniques it is often advantageous to use a raised floor, which allows the running of electrical wiring cable therebeneath. To provide access to the electrical wiring and cabling, an opening is cut through the floor at a convenient location and the electrical service cables and communication lines are terminated in a box that is suspended from the raised floor. These in-floor boxes are generally open-ended box like containers that are substantially flush with the finished floor once inserted into the opening of the raised floor. A cover having slots and/or openings may be positioned over the open end of the box to cover the electrical connections therein.
It is known to fasten the floor box to the floor by utilizing a bracket that is first mounted underneath the floor and then the floor box is mounted directly to the bracket that has been secured to the bottom part of the floor opening.
What is needed in the art is a cost effective, easily installed and removed fastening for an under-floor box.
The present invention provides an under-floor box attachment method that allows easy securing of the under-floor box without requiring access to the underside of the floor for the installation of brackets thereunder.
The invention comprises, in one form thereof, an under-floor box system including a floor having an opening therein and a floor box positioned in the opening of the floor. The floor box includes a housing and at least one fastening device partially retractable within the housing.
An advantage of the present invention is that a bracket rotates angularly and extends underneath the floor and is secured by a screw to hold the under-floor box in position.
Another advantage of the present invention is that the bracket can be simply retracted after the loosing of a screw and the box removed through the floor opening.
The above-mentioned and other features and advantages of this invention, and the manner of attaining them, will become more apparent and the invention will be better understood by reference to the following description of an embodiment of the invention taken in conjunction with the accompanying drawing, wherein:
Corresponding reference characters indicate corresponding parts throughout the several views. The exemplification set out herein illustrates one preferred embodiment of the invention, in one form, and such exemplification is not to be construed as limiting the scope of the invention in any manner.
Referring now to the drawings, and more particularly to
Within housing 20 there may be openings 24 that allow the entrance of power and data cables therethrough into the interior of housing 20. Electrical receptacle 26 and data receptacle 28 are removably placed within housing 20 and are respectively connected to electrical and data wiring.
Housing 20 includes a flange 30, opening 32 and a tab 34. Flange 30 extends outwardly from housing 20 and generally comes in contact with the top of floor 12, thereby retaining floor box 10 in an accessible position relative to the top of floor 12. Openings 32 may be formed by the bending away of tab 34 from a wall of housing 20 allowing tab 34 to be created from the material that is folded from opening 32. Opening 32 and tab 34 are variously formed in the side walls of housing 20 at opposing positions in housing 20.
Now, additionally referring to
Prior to the installation of under-floor box system 10 into floor 12, screws 36 are extended upwardly from tab 34 and cantilevered brackets 38 are lifted so as to allow for sufficient clearance as under-floor box 10 is lowered in to an opening of floor 12. Once flange 30 is in contact with an upper portion of floor 12 cantilevered brackets 38 are released and are slid in direction 50 to extend cantilever bracket 38 outwardly allowing angle portion 40 and a non-angled portion to come in contact with the bottom of floor 12. Screw 36 is then tightened, thereby securing under-floor box 10 to floor 12. Floor 12 has a floor height 52 and under-floor box system 10 has an accommodating height 54 of fastening device of 22. Floor height 52 can vary to some extent, since accommodating height 54 of fastening device 22 is sufficient to allow cantilevered bracket 38 to be installed in angled positions with screw 36 not drawing bracket 38 into a flat contact with tab 34. Nonetheless, under-floor box 10 is not removable from floor 12 until screw 36 is loosened and cantilever bracket 38 is drawn inwardly and upwardly for the removable of under-floor box system from floor 12.
Advantageously, the present invention allows for an easy installation and securing of under-floor box system 10 in a floor 12, without requiring the installation of any brackets beneath floor 12. Further, tab 34 is effectively constructed by the forming of opening 32. The co-acting of slot 42 with screw 36 allows for the combined angular and linear retraction of cantilever bracket 38.
While this invention has been described as having a preferred design, the present invention can be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the invention using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains and which fall within the -limits of the appended claims.
This is a provisional application based upon U.S. provisional patent application Ser. No. 60/649,775, entitled “Floor Access Box Adjustment Method”, filed Feb. 3, 2005.
Number | Date | Country | |
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60649775 | Feb 2005 | US |