United States Patent (19) 11 Patent Number: 5,902,198 Martin Et Al
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USOO5902198A United States Patent (19) 11 Patent Number: 5,902,198 Martin et al. (45) Date of Patent: May 11, 1999 54 BASKETBALL BACKBOARD WITH 4,285,518 8/1981 Pearo. SHATTER-RESISTANT PROPERTIES 4,320,896 3/1982 Engle et al. 4,583,732 4/1986 Allen. 75 Inventors: Donald C. Martin, Martinsville, Va.; 4,588,188 5/1986 Mahoney et al. E. Weldon Herndon, Jr., Durham, 4,983,461 1/1991 Daude et al. ........................ 428/423.1 N.C. 5,037,092 8/1991 Blackburn. 73 Assignee: Clear Defense Incorporated, Primary Examiner William H. Grieb Martinsville, Va. Attorney, Agent, or Firm-Rhodes, Coats & Bennett, L.L.P. 57 ABSTRACT 21 Appl. No.: 08/866,515 A shattSnailer-reSISLani tant basketballDaSKelball backboardbacKDoard isIS provided,proVided, Wnicwhich 22 Filed: May 30, 1997 comprises a tempered glass basketball backboard having a 6 front Surface and back Surface; and a plastic film adhered to - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - As the rear surface of the backboard. In preferred embodiments, 52) -rr the plastic film is comprised of at least one plastic layer and 58 Field of Search ...................................... 473/479, 481 an adhesive layer. The plastic film can have a release liner 56) References Cited adjacent to the adhesive layer, and a Scratch resistant coating adjacent to the plastic layer. UltraViolet resistance properties U.S. PATENT DOCUMENTS can also reside in the film or adhesive. The plastic film can be made of polyethylene terephthalate, polycarbonate or like 1,736,879 11/1929 Gross. materials. Plastic film can be applied either in an OEM or 1,789,363 1/1931 Gross. retrofit installation. 3,388,032 6/1968 Saunders ................................. 428/215 3,499,783 3/1970 Nelson et al. .......................... 428/161 4,194,734 3/1980 Tyner. 16 Claims, 5 Drawing Sheets 34 U.S. Patent May 11, 1999 Sheet 1 of 5 5,902,198 s U.S. Patent May 11, 1999 Sheet 2 of 5 5,902,198 S 121-44 Z. N w see U.S. Patent May 11, 1999 Sheet 3 of 5 5,902,198 U.S. Patent May 11, 1999 Sheet 4 of 5 5,902,198 U.S. Patent May 11, 1999 Sheet 5 of 5 5,902,198 CO Od L 5,902,198 1 2 BASKETBALL BACKBOARD WITH adhered to the rear surface of the backboard. In a preferred SHATTER-RESISTANT PROPERTIES embodiment, the plastic film is comprised of at least one plastic layer and a mounting adhesive layer. The plastic film FIELD OF THE INVENTION can have a release liner adjacent to the adhesive layer, and a Scratch-resistant coating adjacent to the plastic layer. The present invention generally relates to basketball goals UltraViolet resistance properties can also reside in the film or and more Specifically to an improved shatter-resistant tem adhesive. The plastic film can be made of polyethylene pered glass backboard with a transparent plastic film terephthalate, polycarbonate or like materials. Plastic film adhered thereto. can be applied either in an OEM or retrofit installation. BACKGROUND These and other aspects of the present invention as disclosed herein will become apparent to those skilled in the The Shattering of glass basketball goals during play has art after a reading of the following description of the become a Serious impediment to the Safety of the partici preferred embodiments when considered with the drawings. pants. Current glass backboards typically are one-half (%) to three-eighth (%) inch tempered glass. When Subjected to 15 BRIEF DESCRIPTION OF THE DRAWINGS appropriate forces, Such as during a player's dunk or other force applied to the rim, the tempered glass is stressed FIG. 1 is an exploded view of a basketball backboard. beyond its elastic limit and Shatters into a myriad of Small FIG. 2 is a cross section of a basketball backboard glass pieces. Typically, these pieces are roughly oblong, and showing a preferred embodiment. approximately one-half (%) to one (1) inch long. These glass FIG. 3 is a cross section of a basketball backboard, projectiles rain down on the players on the court, creating a showing an alternative embodiment. possibility for Skin lacerations and Serious eye injury. Also, FIG. 4 is a rear view of a glass Section, intended to Serve the shower of glass pieces can ricochet towards participants as a basketball backboard when combined with mounting positioned courtside, Such as cheerleaders, ball boys, cam accessories and hardware. eramen and Spectators. The danger to the Safety of people at 25 the game cannot be ignored by Sports arena owners and FIG. 5A is a front view of a basketball backboard. operators. FIG. 5B depicts a plastic film according to this invention. In addition to the Safety issues, the shattering of a glass FIG. 5C depicts another plastic film according to this backboard creates clean-up problems. Maintenance personal invention. must carefully locate and remove thousands of glass par FIG. 6 is a rear view of a basketball backboard. ticles that have fallen to the floor and slid under objects. FIG. 7 is a rear view of a basketball backboard. Missing just a Single piece can cause great damage if a The drawings are for the purpose of describing a preferred player Subsequently falls on the glass fragment. Also, even embodiment of the invention and are not intended to limit if some portions of the shattered glass do not fall to the floor the present invention. during breakage, they likely will during replacement opera 35 tions. DESCRIPTION OF THE PREFERRED Finally, the Shattering of backboard can also have a EMBODIMENTS Significant effect on the tempo of the game. The time FIG. 1 is an exploded view of a basketball backboard necessary to clean-up and replace a backboard can cause a illustrating an embodiment of this invention. The backboard long delay in the game, possibly affecting the momentum 40 10 comprises a one-half (%) to three-eighth (%) inch tem experienced by one or both teams. Also, there is a feeling of pered glass Section, a mounting frame 14 and a goal assem machismo associated with the shattering of a glass bly 16 (shown in dashed lines). Mounting slots 18 allow backboard, allowing the team inflicting Such damage to gain attachment of the backboard to the Support Structure Stand a perceived or real emotional advantage. Such events and (not shown). The mounting frame 14 typically includes a passion can influence the outcome of a Sporting event. 45 “U” shaped injection molded neoprene gasket (not shown) Recent attempts to address the above problems focus along the perimeter of the glass 12, protecting the glass from upon decreasing the Stresses imparted to the glass backboard the frame 14. during play. Such attempts primarily address the mounting The goal assembly 16 is attached to the glass 12 and of a basketball rim to a basketball goal. See, e.g., U.S. Pat. 50 mounting frame 14 through a goal anchor assembly 22. The Nos. 4,588,188 and 5,037,092. While these latest attempts goal anchor assembly is mounted through holes 24 in the may reduce the incidence of backboard Shatter for new glass and Secures the goal to the glass 12 and mounting installations, backboards continue to shatter all too fre frame 14. The goal assembly 16 can be a breakaway type to quently. None of these Solutions Seek to restrain the glass release the rim portion thereof when excessive force is particles from dismantling from the backboard unit once the 55 applied thereto. In typical backboards, a target area (not inevitable breakage occurs. Also, apparently no prior art shown) and edge border (not shown) are applied by con Solutions have targeted broken glass retention Systems ventional technologies, e.g., Screen printing, to the front of which can be applied to existing installations in a retro-fit the glass Surface. manner to decrease their hazardous potential. The drawing of the backboard 10 and related elements is Thus there is a need in the art for an improved glass 60 intended to represent a conventional glass backboard being backboard goal that minimizes the ill effects of the Shattering Sold and used today. This invention can be practiced on a of tempered glass. wide variety of backboard configurations and mounting hardware. SUMMARY OF THE INVENTION A plastic film 30, 50 also is shown in FIG.1. In a retro-fit A shatter-resistant basketball backboard is provided, 65 installation, the plastic film 30, 50 is cut to size, to approxi which comprises a tempered glass basketball backboard mately fill the exposed glass Surface area of the rear Surface having a front Surface and back Surface; and a plastic film of the backboard 10. In a preferred embodiment, the goal 5,902,198 3 4 anchor assembly 22 is first removed from the backboard 10 prior to application of the plastic film 30, 50. The film 30, 50 TABLE is then properly applied to the back Surface of the glass 12, as discussed below. Access holes 34 are then created in the FILMPROPERTIES film, So that the goal anchor assembly 22 can be reattached. CD 125 CD 225 CLEAR CLEAR FIG. 2 illustrates a cross section of the plastic film 30 in a preferred embodiment, after mounting has occurred on the PHYSICAL PROPERTIES glass 12. The glass 12 (shown of undetermined width in FIG. Number of Film Layers 1. 2 2) typically is a one-half (%) to three-eighth (%) inch 1O Laminate Thickness (including 0.005 (120) 0.009 (225) optically clear tempered glass. The back Surface 13 of the adhesive) inches (microns) glass is on the rear of the backboard, and usually is not Tensile Strength - PSI 28,000 28,000 contacted by the ball or other playing object.