An electrical accessory cable for a light-weight luminaire

Abstract

The present invention provides a unique dual purpose power cable for an electrical lamp. The dual-purpose power cable serves two purposes for the lamp: (1) acting as an electrical accessory for the lamp to provide it with electrical power; and (2) also acting as a load bearing cable for the lamp to suspend the article from a height, e.g., a ceiling. The current power cable has a very thin overall diameter lesser than the conventionally present cables wires Like SVT, SJT and SPT. The overall diameter ranges from 2.9mm to 4 mm. Furthermore, the power cable also has an insulation and a jacket of a type of fluoropolymer / fluoroplastic (FEP) material.

Description

AN ELECTRICAL ACCESSORY CABLE FOR A LIGHT-WEIGHT LUMINAIREFIELD OF INVENTION

[0001] The present invention is generally related to power cables for electrical lamps. More particularly, the present invention relates to stranded multi-core wires for powering up low voltage lamp.BACKGROUND OF INVENTION

[0002] There are many types of wire like SVT, S JT and SPT that has overall diameter approx, and above 6 mm. These power cable wires are used for providing electrical power to low voltage lamps.

[0003] Generally, for electric light articles which are suspended from a height, e.g., from a ceiling, two cables are used. One which is an electrical cable to power up the light unit, while the other is a load bearing cable over which the light unit is suspended from the ceiling. The electrical cable connects to the electrical connections of the buildings, while the load bearing cable is fixed in the ceiling for support. Thus, for every such light unit, there may be a required number of load bearing cables, depending on the weight of the article, and one electrical cable. This may lead to inclusion of many cables together at one place.OBJECTIVES OF THE INVENTION

[0004] The present invention is aimed to design and develop an electrical cable for a low voltage, light weight lamps that has dual purposes: one is to act as an electrical accessory, and second is also to act as a load bearing accessory.

[0005] It is an object of the present invention to design and develop a unique electrical cable for a low voltage, light weight lamps that has lesser overall diameters than the conventional cables present.

[0006] It is an object of the present invention to provide an insulation and jacketed cable wire with such a material that has high tensile strength before ageing to provide appropriate mechanical strength to the cable wire for hanging the articles, that may include a light unit, a lamp, and others.SUMMARY OF THE INVENTION

[0007] An aspect of the present invention provides at least one conductor set extending along the length of the electrical cable, wherein the at least one conductor set including at least one stranded conductor core; at least one insulation layer wrapping the at least one stranded conductor core in the at least one conductor set, the at least one insulation layer is made of a type of fluoropolymer / fluoroplastic (FEP) material; and at least one jacketing layer covering the at least one conductor set that includes the at least one stranded conductor core insulated with the at least insulation layer, the at least one jacketing layer is made of a type of fluoropolymer / fluoroplastic (FEP) material; characterised in that the electrical cable operates as an electrical accessory for an article for conducting electrical power to the article, as well as a load hanging accessory for suspending the article from a desired height.

[0008] An embodiment of the present invention provides that the overall diameter of the electrical cable ranges from 2.90mm to 4 mm to withstand low voltage.

[0009] An embodiment of the present invention provides that the tensile strength before ageing of the electrical cable is 10.3MPA min. to provide a mechanical strength of 40 lbs without breakage.

[0010] An embodiment of the present invention provides that the at least one stranded conductor core is further wrapped in a RETURN conductor wrapping after being insulated.

[0011] An embodiment of the present invention provides that the at least one stranded conductor core is further wrapped in the RETURN conductor which includes at least an Aluminum foil.

[0012] Another embodiment of the present invention provides that the at least one conductor set includes at least two stranded conductor cores individually insulated with the at least one insulation layer.

[0013] An embodiment of the present invention provides that the at least two stranded conductor cores are further wrapped together in an Aluminum foil wrapping after being insulated.

[0014] Another embodiment of the present invention provides that each of the at least two stranded conductor cores are separately wrapped in an Aluminum foil wrapping after being insulated.

[0015] An embodiment of the present invention provides that the at least one stranded conductor core is made of copper.

[0016] Another embodiment of the present invention provides that the at least one stranded conductor core is made of annealed tinned copper.

[0017] An embodiment of the present invention provides that the at least one stranded conductor core has at least 19 number of strands.

[0018] An embodiment of the present invention provides that the at least one insulation layer is a dielectric insulator.

[0019] An embodiment provides that the electrical cable of present invention is a single core 18 AWG wire 2.90 mm diameter for up to 30 Watts

[0020] An embodiment provides that the electrical cable of present invention is a 2 core 18 AWG wire 4.0 mm diameter for up to 30 Watts.

[0021] Another embodiment provides that the electrical cable of present invention is a 2 core 20 AWG wire 3.60 mm diameter for up to 20 watts.

[0022] Yet another embodiment provides that the electrical cable of present invention is a 2 core 22 AWG wire 3.20 mm diameter for up to 10 watts.

[0023] An embodiment provides that the electrical cable of present invention replaces a conventional thick diameter cable wire, also replaces the conductive accessories in an article, and also replaces the load bearing accessories of the article.

[0024] An embodiment of the present invention provides the light weight article is a Class 2 Pendant lamp with lamp weight approx. 10 Lb.BRIEF DESCRIPTION OF DRAWINGS

[0025] For a better understanding of the embodiments of the systems and methods described herein, and to show more clearly how they may be carried into effect, references will now be made, by way of example, to the accompanying drawings, wherein like reference numerals represent like elements / components throughout and wherein:

[0026] FIGs. 1 and 2 illustrate an exemplary representation of a side view of an electrical accessory for a lamp, in accordance with an embodiment of the present invention.DETAILED DESCRIPTION OF INVENTION

[0027] This patent describes the subject matter for patenting with specificity to meet statutory requirements. However, the description itself is not intended to limit the scope of this patent. The principles described herein may be embodied in many different forms.

[0028] Illustrative embodiments of the invention now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like numbers refer to like elements throughout.

[0029] The present invention provides a unique dual purpose power cable for an electrical lamp. The dual-purpose power cable serves two purposes for the lamp: (1) acting as an electrical accessory for the lamp to provide it with electrical power; and (2) also acting as a load bearing cable for the lamp to suspend the article from a height, e.g., a ceiling. The current power cable has a very thin overall diameter lesser than the conventionally present cables wires Like SVT, SJT and SPT. The overall diameter ranges from 2.9mm to 4 mm. Furthermore, in an embodiment, the power cable also has an insulation and a jacket of a type of fluoropolymer / fluoroplastic (FEP) material.

[0030] Generally, the current power cable is for low voltage light weight articles, e.g., a low voltage light weight lamp.

[0031] It may be apparent to a person of ordinary skill that the current power cable may also have lesser diameter than 2.9mm or a little more diameter than 4mm, depending on therequirement of the articles to be powered up, as long as it also has the mechanical strength to bear the suspending weight of the article, without deviating from the meaning and scope of the present invention.

[0032] It may also be apparent to a person of ordinary skill that the current power cable may also be used to provide electric power and load bearing feature to any article other than a low voltage light weight lamp, without deviating from the meaning and scope of the present invention.

[0033] Referring to FIGs. 1 and 2, the dual-purpose power cable 100A and 100B are shown. For simplicity, both the cables 100A and 100B of the FIGs. 1 and 2 respectively are herein referred to as power cable 100. The inner of the cable 100 may have a plurality of insulated conductor sets 102 extending along the length of the electrical cable 100. In an embodiment, each conductor set 102 has at least one insulated stranded conductor 104, as shown in FIG. 1. In another embodiment, each conductor set 102 has at least two insulated stranded conductors 104, as shown in FIG. 2. In an embodiment, the stranded conductors are made of any electricity conducting material such as including and not limited to copper. In an embodiment, the number of strands in each conductor 104 may be 19.

[0034] Further, each of the insulated stranded conductors 104 is insulated with a type of insulation such as a dielectric material including and not limited to fluoropolymer / fluoroplastic (FEP) material, which may be referred herein as FEP insulation 106.

[0035] In an optional embodiment, after the FEP insulation 106, the stranded conductors 104 may be further wrapped together in a RETURN conductor wrapping, such as including and not limited to an Aluminum foil wrapping 108. In another embodiment, each of the strandedconductors 104 may be further separately wrapped in a RETURN conductor wrapping, such as including and not limited an Aluminum foil wrapping 108.

[0036] Furthermore, the whole power cable 100 may also have a jacket for further protection. This jacket may be made of a type of fluoropolymer / fluoroplastic (FEP) material, which may be referred herein as FEP jacket 110.

[0037] The power cable 100 has a thin overall diameter, which saves material of construction. Also, the power cables 100 has such physical parameters [see e.g., Tables 1-4], which provides sufficient mechanical strength for suspending an article from a height. The power cable 100 has a Tensile Strength Before Ageing of 10.3MPa min. to provide the high mechanical strength of 40 lbs. without breakage for suspending the articles.

[0038] In exemplary embodiments, following are at least four system capacities to implement the power cable 100 of the current invention. The mechanical and electrical load ability and functionality of the power cable 100 are found to be safe to use as per industrial norms of similar articles.

[0039] Single core 18 AWG 2.9mm diameter for upto 30 Watts [further specifications in Table 1]

[0040] 2 core 18 AWG wire 4.0 mm diameter for up to 30 Watts [further specifications in Table 2]

[0041] 2 core 20 AWG wire 3.60 mm diameter for up to 20 watts [further specifications in Table 3]

[0042] 2 core 22 AWG wire 3.20 mm diameter for up to 10 watts [further specifications in Table 4]

[0043] It may also be apparent to a person of ordinary skill that the current power cable 100 may also be used to other various system specifications as long as they are safe to use and provide sufficient mechanical and electrical load ability, without deviating from the meaning and scope of the present invention.

[0044] In an exemplary embodiment, the power cable 100 may be used in Class 2 Pendant lamp where lamp weight approx. 10 Lb.

[0045] Thus, advantageously, the power cable 100 is used for articles e.g., lamps and can replace the thick diameter of wire and also replace the conductive accessories in lamp. Additionally, the electrical cable 100 operates as the electrical accessory for the light weight luminaire for conducting electrical power, as well as the load hanging accessory for suspending the light weight luminaire from a desired height.

[0046] It is intended that the disclosure and examples be considered as exemplary only. Though the present disclosure includes examples from light units, the power cable disclosed herein may be employed at various other locations and environment, such as hoardings, light displays, or any other suitable environment, as would be appreciated by one skilled in the art.

[0047] While certain embodiments have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the present disclosure. Indeed, the novel methods, devices, and systems described herein may be embodied in a variety of other forms. Furthermore, various omissions, substitutions, and changes in the form of the methods, devices, and systems described herein may be made without departing from the spirit of the present disclosure.

Claims

CLAIMS1- An electrical cable comprising: at least one conductor set extending along the length of the electrical cable, wherein the at least one conductor set including at least one stranded conductor core; at least one insulation layer wrapping the at least one stranded conductor core in the at least one conductor set, the at least one insulation layer is made of a type of a dielectric material including a fluoropolymer / fluoroplastic (FEP) material; and at least one jacketing layer covering the at least one conductor set that includes the at least one stranded conductor core insulated with the at least insulation layer, the at least one jacketing layer is made of a type of fluoropolymer / fluoroplastic (FEP) material; characterised in that the electrical cable operates as an electrical accessory for an article for conducting electrical power to the article, as well as a load hanging accessory for suspending the article from a desired height.2- The electrical cable of claim 1, wherein the overall diameter of the electrical cable ranges from 2.90mm to 4 mm to withstand low voltage.3- The electrical cable of claim 1, wherein the tensile strength before ageing of the electrical cable is 10.3MPA min. to provide a mechanical strength of 40 lbs without breakage.4- The electrical cable of claim 1, wherein the at least one stranded conductor core is further wrapped in a RETURN conductor wrapping after being insulated.5- The electrical cable of claim 4, wherein the at least one stranded conductor core is further wrapped in the RETURN conductor which includes at least an Aluminum foil wrapping.6- The electrical cable of claim 1, wherein the at least one conductor set includes at least two stranded conductor cores individually insulated with the at least one insulation layer.7- The electrical cable of claim 6, wherein the at least two stranded conductor cores are further wrapped together in an Aluminum foil wrapping after being insulated.8- The electrical cable of claim 6, wherein each of the at least two stranded conductor cores are separately wrapped in an Aluminum foil wrapping after being insulated.9- The electrical cable of claim 1, wherein the at least one stranded conductor core is made of copper.10- The electrical cable of claim 1, wherein the at least one stranded conductor core is made of annealed tinned copper.11- The electrical cable of claim 1, wherein the at least one stranded conductor core has at least 19 number of strands.12- The electrical cable of claim 1 is a single core 18 AWG wire 2.90 mm diameter for up to 30 Watts.13- The electrical cable of claim 6 is a 2 core 18 AWG wire 4.0 mm diameter for up to 30 Watts.14- The electrical cable of claim 6is a 2 core 20 AWG wire 3.60 mm diameter for up to 20 watts.15- The electrical cable of claim 6 is a 2 core 22 AWG wire 3.20 mm diameter for up to 10 watts.16- The electrical cable of claim 1 replaces a conventional thick diameter cable wire, also replaces the conductive accessories in an article, and also replaces the load bearing accessories of the article.17- The electrical cable of claim 1, wherein the article is a Class 2 Pendant lamp with lamp weight approx. 10 Lb.

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