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(12) United States Patent (10) Patent No.: US 6,354,714 B1 Rhodes (45) Date of Patent: Mar

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(12) United States Patent (10) Patent No.: US 6,354,714 B1 Rhodes (45) Date of Patent: Mar USOO6354714B1 (12) United States Patent (10) Patent No.: US 6,354,714 B1 Rhodes (45) Date of Patent: Mar. 12, 2002 (54) EMBEDDED LED LIGHTING SYSTEM 5,160,202 A 11/1992 Legare .................... 362/153.1 5,438,495. A 8/1995 Ahlen et al. ............. 362/153.1 (76) Inventor: Michael Rhodes, 604 SE 2nd Ave., 5,450,300 A 9/1995 Rector, Jr. ............... 362/153.1 Grand Rapids, MN (US) 55744 5,669,691 A 9/1997 Barrow .................... 362/153.1 5,927.845 A * 7/1999 Gustafson et al. .......... 362/152 (*)c: Notice:- - - Subject to any disclaimer, the term of this 6,158,8826,142,647 A * 12/200011/2000 HayakawaE. Jr. .................. ................ 362/488362/230 patent is extended or adjusted under 35 6,234,647 B1 5/2001 Liu ............................ 362/235 U.S.C. 154(b) by 0 days. 6,244,728 B1 6/2001 Cote et al. .................. 362/249 6.286,978 B1 * 9/2001 Tait et al. ................... 362/249 (21) Appl. No.: 09/692,464 sk cited- by examiner (22) Filed: Oct. 20, 2000 Primary Examiner Sandra O'Shea Related U.S. Application Data ASSistant Examiner Anabel Ton (60) Provisional application No. 60/194,371, filed on Apr. 4, (74) Attorney, Agent, or Firm-Richard C. Litman 2000. (57) ABSTRACT (51) Int. Cl." ................................................ F21V 23/00 (52) U.S. Cl. .................... 362/153.1; 362/152; 362/249; An embedded LED lighting System for marking flooring, 362/362; 362/145 walkways, roadways, and airport runways employs a Strip of (58) Field of Search ................................. 362/240, 249, light emitting diode mounted on a I-beam shaped framework 362/362,145, 152, 153.1; 313/500, 512 and encapsulated in a clear or reflective potting material. The upper portion of the housing for the LED lighting (56) References Cited System is covered with a reflective coating or tape. The embedded LED lighting system can be controlled by motion U.S. PATENT DOCUMENTS Sensors, pressure Sensors, or croSSWalk lights. 3,663,808 A 5/1972 Baatz. ............................ 240/2 4,993,868 A 2/1991 Eigenmann .................. 404/12 16 Claims, 4 Drawing Sheets 1 OO 1 O3 130 N 1 O9 N 1 O6 124 U.S. Patent Mar. 12, 2002 Sheet 2 of 4 US 6,354,714 B1 60|| 90|| OOO! U.S. Patent Mar. 12, 2002 Sheet 3 of 4 US 6,354,714 B1 f 115 13 OC 13 OC 119 118 108 1 O1 130b 1 O2 222 2 2 116 (S / 2 (SY /22 (2N Z2 24, 1612 (4.462 22%22 s 'y'-22, US 6,354,714 B1 1 2 EMBEDDED LED LIGHTING SYSTEM a sleeve member that has a sleeve member passageway allowing access through the open end into the base recep CROSS-REFERENCE TO RELATED tacle. A replaceable light fixture connecting apparatus is APPLICATION used to connect a light fixture to the sleeve member. U.S. Pat. No. 5,669,691, issued on Sep. 23, 1997 to F. R. This application claims the benefit of U.S. Provisional Barrow, describes an airport runway or taxiway light fixture. Patent Application Serial No. 60/194,371, filed Apr. 4, 2000. The in-pavement light fixture for mounting in an airport runway or a taxiway has a cover with a flat Surface and one BACKGROUND OF THE INVENTION or two windows for the passage of a light beam. An optical 1. Field of the Invention prism is detachably mounted in a cavity formed in the cover The present invention relates generally to lighting Systems beside and beneath each window. and more particularly, to an embedded LED lighting System An integrally formed linear light Strip with light emitting that is well-Suited for marking walkways, roadways, or diodes is described in U.S. Pat. No. 5,927.845, issued on Jul. airport runways. The embedded LED lighting System can be 27, 1999 to T. L. Gustafson. The light strip includes first and controlled by radio frequency controllers, motion Sensors, 15 Second bus elements Spaced apart from one another by a photocells, etc. predetermined distance. An extruded plastic material com pletely encapsulates the first and Second bus elements and 2. Description of Related Art the LED, thereby providing a barrier to protect the elements Properly illuminating roadways, airport runways, or from damage and to make the light Strip impervious to croSSwalks at night is essential to maintaining a Safe and moisture. accident free environment. Some locations Such as airports None of the above inventions and patents, taken either often require that illumination Sources be highly visible even Singly or in combination, is seen to describe the instant during the day, for example, runway Stop line lights. invention as claimed. However, it is difficult to find an illuminating means that is durable, relatively easy to install and remove, that is cost SUMMARY OF THE INVENTION efficient, and easy to repair and maintain. Also Such an 25 Accordingly, it is a principal object of the invention to illuminating means would have to provide excellent illumi provide an LED lighting System that can be embedded into nation without posing a threat as a physical obstacle to a concrete, asphalt or flooring Surface. pedestrians and vehicular traffic. It is another object of the invention to provide an embe The prior art describes a variety of lighting Systems used dable LED lighting System that Serves as an excellent Source to provide illumination for different Settings. For example, of illumination. an illuminated safety curbing is described in U.S. Pat. No. It is a further object of the invention to provide an 3,663,808, issued on May 16, 1972 to W. Baatz. The embedable LED lighting System that is not potentially a construction of the illuminated Safety curbing employs a physical obstacle to pedestrian and vehicular traffic. reinforced, pre-cast concrete base with an extra heavy-duty Still another object of the invention is to provide an translucent fiberglass cover of diving bell configuration 35 embedable LED lighting System that is easy to maintain and which houses an incandescent or fluorescent illumination readily Serviceable. fixture. Single-faced or double-faced elongated illuminated It is an object of the invention to provide improved curbing Sections are adapted to be combined in various elements and arrangements thereof in an embedded LED configurations with a nose Section to form curbings and lighting System for the purposes described which is dividers for different traffic separator situations. 40 inexpensive, dependable and fully effective in accomplish U.S. Pat. No. 4,993,868, issued on Feb. 19, 1991 to L. ing its intended purposes. Eigenmann, describes a continuous horizontal road-marking The foregoing objectives are achieved in accordance with tape. The road marking tape includes light emitting diodes or the present invention by providing a LED lighting System high intensity microlamps, Solar cells, and retroreflecting 45 that is embedded in a concrete, asphalt, or flooring Surface. elements. The road marking tape balances the Solar energy The embedable LED lighting system of the present inven captured by its Solar cells with the emitted light employed to tion is an excellent Source of illumination and does not pose Signal or warn motorists. a threat as a physical obstacle to pedestrian and vehicular U.S. Pat. No. 5,160,202, issued on Nov. 3, 1992 to L. R. traffic. The LED lighting System comprises a Strip of light Legare, describes an illuminated concrete curbstone. The 50 emitting diodes mounted in an extruded I-beam configured curbstone is adapted to be partly immersed in the ground framework and encapsulated in a clear and reflective lens adjacent a driveway. The concrete curbstone block has an material. The embedded LED lighting system of the present internal illuminated housing for projecting light onto a invention produces uniform illumination that is highly vis driveway. The housing has a transparent window receding ible. from the flat front face of concrete. The illuminated curb 55 The embedded LED lighting system of the present inven Stone is adapted to project light onto the driveway at a level tion can be used in a broad spectrum of applications; for above the ground. example, the LED lighting System can be used for marking An embedded light fitting for runways is described in U.S. roadways or restricted areas and airline logos at airports. The Pat. No. 5,438,495, issued on Aug. 1, 1995 to H. Ahlen et al. LED lighting System can be controlled by motion Sensors, The light fitting, which includes a light Source with a 60 pressure Sensors, or radio frequency controllers. reflector as well as a limiting light opening in the field of Furthermore, the lighting System can be an arrangement to light, is intended to be embedded in the Surfacing of a produce any desired illuminating configuration Such as an runway. arrow, numeric character, or lines meeting the color and size A device for providing light along a runway or taxiway at of federal and State Safety markings. an airport is described in U.S. Pat. No. 5,450,300, issued on 65 These and other objects of the present invention will Sep. 12, 1995 to J. A. Rector, Jr. Abase receptacle is adapted become readily apparent upon further review of the follow to be positioned along the runway and has an open end and ing Specification and drawings. US 6,354,714 B1 3 4 BRIEF DESCRIPTION OF THE DRAWINGS even outside airport terminals, directing passengers to FIG. 1 is an environmental view of embedded LED departure gates (for example), and/or the use of an embed lighting installed on an airport runway according to the ded LED Scrolling marquee, informing passengers of depar present invention.
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