The present invention relates generally to identification of electrical wiring, and more particularly to printed sleeves for identification of electrical wiring, and methods of identifying electrical wiring.
For the efficiency of electricians it is helpful to identify, at the electricity supply system, which electrical wiring or bundles of wiring belongs to a particular circuit. For example, easy identification at a fuse box or circuit breaker of the wiring to the kitchen, bedroom, living room, or any other room or space in a structure is desired to save time and money when working with the electricity supply system. Such identification allows electricians the ability to pinpoint a particular circuit without resorting to guesswork or trial-and-error, which can be time-consuming, costly, and dangerous.
Traditional electrical wiring is protected by a covering, such as a plastic sleeve. Individual wires can be covered, or bundles of wires may be encased in a single sleeve. Currently in the profession, electricians may mark these coverings or sleeves with a temporary or non-permanent marking, such as a pen or marker that can wear over time, rendering the marking intelligible, or with an adhesive label that can lose its adhesiveness and fall off over time, leaving the previously-labeled wiring unlabeled. Furthermore, it can be difficult to label the wires when already installed in an electrical panel, or encased in a sleeve. Color coded sleeves are also available; however, the color coding must be known or otherwise available to the electrician to decipher where the wire is to be sourced.
Thus, there remains a need for a system of permanent marking or identification of the electrical wires and a method of identifying the electrical wires that do not suffer the drawbacks of the prior art systems and methods.
Embodiments of the present invention overcome many of the drawbacks of the prior art. A covering or sleeve according to embodiments of the invention generally can comprise an insulating material, such as a polymeric material, that is permanently printed with indicia identifying the particular circuit to which the wire belongs. In one particular embodiment, the sleeve is printed using a permanent printing technique such as inkjet printing to permanently mark the sleeve with indicia identifying the room or space the covered electrical wire is sourcing. Permanent printing techniques can include pad printing, lithographic printing, flexographic printing, gravure printing, and digital printing including ink jet printing, in-line ink jet printing, electrographic printing, or laser printing, for example. The sleeves can optionally be color-coded as a secondary identification system according to known color-coding in the industry.
The printed sleeves can be sold individually and then subsequently applied to the electrical wires at the electrical source, such as an electrical box. This can be done using a heat shrinkable material in which the sleeve material is wrapped over the appropriate electrical wire or wires, and then heat is applied such as by a heat gun to seal the sleeve over the wire or wires. Other attachment means can also be contemplated such as adhesive, mechanical fasteners, or the like. Alternatively, wiring can be covered with the printed sleeves and packaged individually, or in a set. For example, electrical wiring for a house can be sold as a package including marked wiring for a kitchen, bedrooms, living room, etc. In this embodiment, the covering material may be extruded unto the electrical wiring and then the wiring is cut into a plurality of covered wires, and subsequently printed using a permanent printing technique, such as lithographic printing, flexographic printing, gravure printing, and digital printing including ink jet printing, in-line ink jet printing, electrographic printing, or laser printing, for example.
In an embodiment, the electrical wiring for a house can be packaged in a kit including a plurality of identifying sleeves, instructions for instructing a user to install the plurality of identifying sleeves at an electrical supply source of the structure, and a container for storing the plurality of identifying sleeves and the instructions. In another embodiment, the kit can further comprise a plurality of electrical wires, wherein each of the plurality of identifying sleeves is pre-wrapped around one or more of the plurality of electrical wires. In another embodiment, the kit can further comprise an electrical panel or breaker box having the plurality of identified electrical wires installed, wherein the container is further configured to store the electrical panel or breaker box. Thus, the entire wiring set or electrical panel can come pre-labeled.
In another embodiment of the invention, a method of identifying electrical wiring can include accessing an electrical system, such as an electrical box, having a plurality of wires, each wire belonging to a particular circuit, and covering one or more electrical wires of the plurality of electrical wires, the electrical wire having an insulating sleeve or cover, the sleeve or cover including a permanent marking indicating a particular circuit to which the electrical wire belongs. In another embodiment, the sleeve or cover is of a standardized color for indicating a particular circuit to which the electrical wire belongs. For example, in embodiments, yellow indicates bath outlet, washing machine, dining outlet, and kitchen outlet circuits. Orange indicates dryer, cooktop, built-in oven, air conditioner, and water heater circuits. White indicates 15 amp circuits throughout the house, including but not limited to bedrooms, hallways, and smoke detectors. Black indicates range circuits.
Alternatively, a method of identifying electrical wiring can include accessing an electrical system, such as an electrical box, installing a plurality of electrical wires, each wire having an insulating sleeve or cover, the sleeve or cover including a permanent marking indicating a particular circuit to which the electrical wire belongs. In another embodiment, the sleeve or cover is of a standardized color for indicating a particular circuit to which the electrical wire belongs. Therefore, in embodiments, the electrical system can then be subsequently accessed, even after long periods of time, and the particular circuits to which the covered wires belong are easily identified.
In another embodiment, a method of identifying electrical wiring in an electrical panel can include accessing an electrical panel, such as a fuse box having a plurality of wires, each wire belonging to a particular circuit and being covered by a sleeve or cover, the sleeve or cover including a permanent marking, standardized color, or combination thereof indicating a particular circuit to which the electrical wire belongs, analyzing said sleeve or cover, and linking a particular circuit to a location in the building containing the electrical panel.
The above summary of the invention is not intended to describe each illustrated embodiment or every implementation of the present invention. The figures and the detailed description that follow more particularly exemplify these embodiments.
The invention may be more completely understood in consideration of the following detailed description of various embodiments of the invention in connection with the accompanying drawings, in which:
While the invention is amenable to various modifications and alternative forms, specifics thereof have been shown by way of example in the drawings and will be described in detail. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Referring to
Wire 102 comprises an individual electrical wire or a bundle of wiring belonging to a single circuit. In an embodiment, wire 102 generally comprises an insulated conductor used to carry electricity. In another embodiment, wire 102 can comprise a plurality of individual electrical wires. While the embodiments herein are described for simplicity and illustration with respect to electrical wiring, the concepts are likewise applicable to other types of wiring where a large collection of wires are present at a single location, such as network wiring like coaxial cable, optical fiber, and twisted pair wiring. In embodiments, wire 102 is typically installed throughout a building such as a single family home or apartment building, or equivalent commercial space, with a central panel for accessing the individual wires 102.
Identifying sleeve 104 provides a device for identifying, sourcing, or otherwise linking wire 102 to a particular circuit. Generally, identifying sleeve 104 comprises a cylinder having an outer surface formed by the points at a fixed distance from the axis of the cylinder. As such, the surface is bookended by an aperture at each end of the cylinder. In various embodiments, the surface radius is variable, depending on the wire 102 application. For example, in embodiments where the surface radius is defined by a heat-shrunk coating, the surface radius can be very small. In other embodiments where a bundle of wires 102 is enclosed, the surface radius can be substantial to account for the bulging of the bundle of wires 102.
Identifying sleeve 104 can comprise an insulating material, such as a polymeric material, that is wrapped around or encompasses wire 102. In other embodiments, identifying sleeve 104 can comprise a heat shrinkable coating in which the sleeve coating is wrapped over electrical wire 102, whereby heat is then applied to seal sleeve 104 over wire 102. In other embodiments, identifying sleeve 104 comprises a plastic-based jacket. In other embodiments, identifying sleeve 104 is friction-fitted over wire 102. Attachment means such as adhesive fasteners or mechanical fasteners are also considered. Therefore, depending on the application, identifying sleeve 104 can be adhered, fastened, or otherwise secured to wire 102, or positioned such that a friction fit secures sleeve 104 onto wire 102. In other embodiments where the ends of wire 102 are anchored, sleeve 104, once fitted over wire 102, can move about freely along wire 102, because of the secure anchoring of the ends of wire 102.
Identifying sleeve 104 can be of varying lengths. For example, in embodiments, an identifying sleeve 104 can have a length six to eight times the cylinder radius. Such a sleeve 104 is appropriate for longer lengths of wire 102. In embodiments, longer sleeves are also useful in longer indicia 106 identification. In other embodiments, a shorter length of wire 102 can include a corresponding shorter length of sleeve 104 such that sleeve 104 has a shorter length surface between the two apertures to embody a ring rather than an elongated cylinder. The examples of lengths provided herein are for illustration only; in no way are the above-listed lengths limiting in any way.
Indicia 106 comprises text or other identifying markings that convey a source of the electrical wire 102 that identifying sleeve 104 is encompassing. For example, as illustrated by identified electrical wire 100 in
Indicia 106 can be formed from permanent marking material compatible with the printing technique utilized for printing indicia 106. For example, the printing technique can include traditional contact-based printing such as, for example, lithographic, flexographic, gravure and the like, which utilizes solvent-based or solvent-less inks or dyes. In other embodiments, plate-less or die-less digital printing techniques, including both contact and contactless can be utilized, including inkjet printing, drop-on-demand printing, electrographic printing, laser printing, thermal printing, and the like, in which digital printing inks (solvent-based or solvent-less) and/or toners are used. In another embodiment, thermal transfer printing is utilized in which no ink or toner is employed. Rather, a heat-sensitive ribbon passes under a thermal print head. A coating of the ribbon is selectively melted in the image area and transfers to the sleeve and bonds thereon. Optionally, when a heat-shrinkable material is used for the sleeve, the thermal print head can also act to seal the sleeve over the wire. In another embodiment, pad printing is utilized. Pad printing is a printing process that can transfer a 2-D image onto a 3-D object. This is typically accomplished using an indirect offset (gravure) printing process that involves an image being transferred from a stereoplate or cliché via a silicone pad onto a substrate. In any of the printing techniques used above, the printing medium permanently bonds or otherwise adheres to the sleeve such that it is virtually wear resistant and permanent.
Sleeve 104 can optionally be color-coded as a secondary identification system according to known color-coding in the industry, or definable unique color coding for a particular building, if desired. For example, identifying sleeve 104 can comprise a material that is colored yellow to signify the kitchen circuit. To account for the variable lengths of identifying sleeve 104, indicia 106 and the color-coding can be adapted to fit on longer or shorter lengths of identifying sleeve 104. For example, an identifying sleeve 104 having a yellow color with abbreviated indicia 106, such as the first letter of a location—“K” for “Kitchen”—on a shorter length of identifying sleeve 104 can provide adequate identifying information as a longer length of identifying sleeve 104 where the entire “Kitchen” can be printed.
In an embodiment, production of sleeve 104 readily enables mass quantity output. For example, sleeve 104 can comprise a substantial length of insulated tubing spooled for easy storage prior to indicia 106 printing. Upon the unspooling of the tubing, a printer can imprint the same indicia 106 repeatedly over spaced-apart sections of the tubing. Subsequently, the tubing can be cut or scored at the spaced sections to thereby create sleeve 104. Because the cutting will be at known lengths, and, in embodiments, corresponding to the length of the printed indicia, the tubing can be fed through a machine tasked with cutting at a set length. As a result, large quantities of sleeves 104 can be created efficiently and cost-effectively. Alternatively, the printed tubing can be supplied to an end user. The end user can cut the tubing to a desired length using a scissors, box cutter, or any other suitable cutting device.
In another embodiment, the tubing of sleeve 104 can be spooled with wire 102, the sleeve 104 having already been wrapped around wire 102. Similar to the above production of sleeve 104, the insulated tubing wrapped around wire 102 can be unspooled. A printer can then imprint the same indicia 106 repeatedly over spaced-apart sections of the tubing wrapped around wire 102. Wire 102 (and tubing) can then be cut at the spaced apart sections to create identified electrical wire 100, as described above. Likewise, large quantities of identified electrical wire 100 can be created. Alternatively, similar to the tubing-only example given above, the tubing wrapped around wire 102 can be supplied to an end user. The end user can cut the wire 102 (and sleeve 104) to a desired length using a wire cutter or any other suitable device.
Referring to
Without accompanying indentifying sleeves, the aforementioned wiring would appear identical within electrical panel 200. Once installed, it would be difficult to identify particular circuits without guesswork or trial-and-error. However, and as depicted in
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In operation, referring to
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Various embodiments of systems, devices, and methods have been described herein. These embodiments are given only by way of example and are not intended to limit the scope of the invention. It should be appreciated, moreover, that the various features of the embodiments that have been described may be combined in various ways to produce numerous additional embodiments. Moreover, while various materials, dimensions, shapes, configurations and locations, etc. have been described for use with disclosed embodiments, others besides those disclosed may be utilized without exceeding the scope of the invention.
Persons of ordinary skill in the relevant arts will recognize that the invention may comprise fewer features than illustrated in any individual embodiment described above. The embodiments described herein are not meant to be an exhaustive presentation of the ways in which the various features of the invention may be combined. Accordingly, the embodiments are not mutually exclusive combinations of features; rather, the invention may comprise a combination of different individual features selected from different individual embodiments, as understood by persons of ordinary skill in the art.
Any incorporation by reference of documents above is limited such that no subject matter is incorporated that is contrary to the explicit disclosure herein. Any incorporation by reference of documents above is further limited such that no claims included in the documents are incorporated by reference herein. Any incorporation by reference of documents above is yet further limited such that any definitions provided in the documents are not incorporated by reference herein unless expressly included herein.
For purposes of interpreting the claims for the present invention, it is expressly intended that the provisions of Section 112, sixth paragraph of 35 U.S.C. are not to be invoked unless the specific terms “means for” or “step for” are recited in a claim.
The present application claims the benefit of U.S. Provisional Application No. 61/582,939, filed Jan. 4, 2012, which is incorporated herein in its entirety by reference.
Number | Date | Country | |
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61582939 | Jan 2012 | US |