Patent Publication Number: US-2010128473-A1

Title: Adjustable LED Light Fixture

Description:
FIELD OF INVENTION 
     This invention relates generally to light fixtures. More specifically, this invention relates to light-emitting diode (“LED”) light fixtures that can adjust between a flood array and a spot array. 
     BACKGROUND 
     High powered lights are required on movie sets, where shoots last into the early morning hours and can feature less than ideal natural lighting. Additionally, lights that alternate between a flood and spot array are particularly useful for lighting faces and other scenes. A high-powered, adjustable, quiet light is essential on film sets. As referenced below, the prior patents do not adequately address such a product. 
     U.S. Pat. No. 7,163,302, issued to Pohlert et al., discloses a LED light fixture with a master power switch, designated group selector switches, a dimming lever, a rectangular frame shape, and the ability to alter the direction of the light. However, Pohlert fails to teach a light fixture with fans, ventilation apertures, a turbo switch, or a remote control. Moreover, although Pohlert discloses a means for altering the direction of the light given off by the LEDs, the reference specifically teaches that this means is a lens that is mounted in front of the LEDs. In other words, Pohlert specifically teaches a refraction means for altering the light. This is very different from the present invention, which teaches a mechanical means to actually swivel the LED clusters. 
     U.S. Pat. No. 6,676,279, issued to Hubbell et al., discloses a LED light fixture with multiple clusters of a plurality of high powered LEDs mounted on heat sinks, and a light fixture. However, Hubbell is directed to a street light fixture and not a film, studio, or still photography light fixture. Additionally, it does not disclose that the LED clusters can swivel or any of the other features of the present light fixture. 
     U.S. Pat. No. 6,106,125, issued to Finn et al., discloses a light box with four swivel lights mounted in a rectangular grid pattern. However, Finn is not specifically directed to LED lights and does not disclose a means to swivel all of the lights simultaneously through one control knob. 
     U.S. Pat. No. 7,144,135, issued to Martin et al., discloses a LED light fixture with a heat sink, ventilation apertures, and a fan to aid in cooling. However, Martin discloses that the light fixture uses a single LED in place of a regular light bulb in a standard home furnishing light fixture. Further, Martin fails to disclose a means to allow the LED light to swivel. 
     In sum, these references fail to disclose every element or limitation of the present invention. The previous conceptual designs of the prior art provide only limited utility and fail entirely to address the need for a quiet, adjustable swivel lighting device on movie sets. The present invention seeks to remedy the problems of the prior art by combining low-noise fans, LED lights, and a swivel mechanism. 
     SUMMARY OF THE INVENTION 
     To minimize the limitations in the prior art, and to minimize other limitations that will become apparent upon reading and understanding the present specification, the present invention discloses a LED light fixture with an adjustable control knob, light-controlling flaps and LEDs mounted on heat sinks. 
     The present invention is unique in that: it uses LED lights that are mounted on heat sinks and can adjust between a spot, neutral, or flood array. The problems with the prior art are overcome by the present invention in that the present invention has ultra-quiet fans, sound-absorbing material, and a ventilation system, which allow it to be used on a film or television set or in the medical industry. It can adjust between light arrays in a manner that also allows for altering the temperature of the light. Some of the other unique features of the lighting fixture are remote capability, expandable cases, an internal power supply, multiple ways to diffuse light, flaps to control light output and an expanding bale. Other inventive features are disclosed below. 
     The invention is a light fixture comprising LED lights, an expandable light box, and adjustable light controlling flaps. Specifically, the light fixture has multiple clusters of plurality of high powered LEDs. Preferably, each cluster has LEDs in a honeycomb configuration and these LEDs are mounted on a heat sink. The light fixture itself is preferably rectangular, and in its best mode, has 25 clusters that are arrayed in a five by five manner. Importantly, in this best mode, the 24 non-middle clusters are on a swivel mount, with one non-swivel cluster. This allows them to be adjusted via a radial arm along a linear axis. 
     A centrally located control knob allows a user to swivel all of the non-middle clusters of the swivel mounted lights at the same time. The control knob specifically allows the user to adjust the clusters from a flood array configuration to a spot array configuration. To allow better airflow and heat dissipation, the LED clusters are positioned on a framing surface that has ventilation apertures. The light fixture also has low-volume, ultra-quiet fans to help dissipate the heat. Additionally, the interior of the light fixture is preferably lined with sound absorbing material to help quite the fans even more. 
     The light fixture may have other features, such as multiple power switches that allow a user to power three distinct designated groups of clusters, either alone or together, and a master power switch. The light fixture may also have a remote-controlled dimmer and a turbo switch that can be used to provide a temporary increase in brightness. All of these controls and switches are flush mounted on the back of the light fixture to allow safe portability. 
     An object of the present invention is to provide a LED light fixture that will overcome the deficiencies of the prior art. 
     Other features and advantages inherent in the LED light fixture claimed and disclosed will become apparent to those skilled in the art from the following detailed description and its accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of one embodiment of the LED fixture with the cases expanded, the flaps open and extended, and the curtains unfolded. 
         FIG. 2  is a perspective view of one embodiment of the LED fixture with the cases expanded, the flaps open and extended, and the curtains folded. 
         FIG. 3  is a front view of one embodiment of the LED fixture&#39;s LED configuration, with the flaps open and extended, and the curtains unfolded. 
         FIG. 4  is a front view of one embodiment of the LED fixture&#39;s LED configuration, with the flaps open and retracted, and the curtains folded. 
         FIG. 5  is a rear view of one embodiment of the LED fixture, showing the bale, all the controls, the hook and eye tabs, and the exhaust vent. 
         FIG. 6  is a right side view of one embodiment of the cases in a retracted position, without flaps, without the diffusion door and with the flap-retaining bracket. 
         FIG. 7  is a right side view of one embodiment of the cases in an expanded position, without flaps mounted, with the diffusion door and with the power cord storage door and the flap-retaining bracket. 
         FIG. 8  is a right side view of one embodiment of the cases in an extended position, with the flaps mounted and folded. 
         FIG. 9  is a right side view of one embodiment of the cases in a retracted position, with the flaps mounted and folded. 
         FIG. 10  is a close-up front view of one embodiment of the LEDs mounted on the heat sink. 
         FIG. 11  is a right side view of one embodiment of the inner case of the ventilation system. 
         FIG. 12  is a right side view of one embodiment of the ventilation system, with arrows that show ventilation flow within the fixture. 
         FIG. 13  is a back view of one embodiment of the ventilation system&#39;s fan configuration, power cord storage area, and power cord storage door, with arrows that show the direction of circulation. 
         FIG. 14  is a bottom view of one embodiment of the ventilation system. 
         FIG. 15  is a front view of one embodiment of the inner case with the radial arms, radial fingers, and brackets. 
         FIG. 16  is a front view of one embodiment of the inner case, with the control mechanism mounting plate attached. 
         FIG. 17  is a front view of one embodiment of the inner case, with the control mechanism mounted on the mounting plate. 
         FIG. 18  is a magnified, right side cross section view of one embodiment of the inner case. 
         FIG. 19  is a front view of one embodiment of the radial arms, radial fingers and brackets. 
         FIG. 20  is a close-up view of one embodiment of the radial arms and fingers. 
         FIG. 21  is a further close-up view of one embodiment of the radial arms and fingers. 
         FIG. 22  is a top view of one embodiment of the heat sink with LEDs attached. 
         FIG. 23  is a side view of one embodiment of the heat sink. 
         FIG. 24  is a side view of one embodiment of the heat sink, shown tilted. 
         FIG. 25  is a front view of one embodiment of the inner case that shows all of the LED electrical circuits. 
         FIG. 26  is a front view of one embodiment of the inner case that shows the first circuit. 
         FIG. 27  is a front view of one embodiment of the inner case that shows the second circuit. 
         FIG. 28  is a front view of one embodiment of the inner case that shows the third circuit. 
         FIG. 29  is a front view of one embodiment of the remote control box. 
         FIG. 30  is a top view of one embodiment of the case in an expanded position, with open and retracted flaps and folded curtains. 
         FIG. 31  is a top view of one embodiment of the case in an expanded position, with open and extended flaps and folded curtains. 
         FIG. 32  is an exploded view of one embodiment of the flap assembly. 
         FIG. 33  is an exploded view of one embodiment of the inner case. 
         FIG. 34  is an exploded view of one embodiment of the radial arms and their assembly. 
         FIG. 35  is an exploded view of one embodiment of the heat sinks, fans and their assembly. 
         FIG. 36  is an exploded view of one embodiment of the outer case. 
         FIG. 37  is an exploded view of one embodiment of the flaps. 
     
    
    
     DRAWINGS—REFERENCE NUMERALS 
       1  9th LED Circuit Switch 
       2  Air Intake 
       3  All Three Circuits 
       4  Bale 
       5  Bale Extensions 
       6  Bale Hand Wheel 
       7  Bale Mount Hole 
       8  Bale Pin 
       9  Bearing 
       10  Bottom Flap Assembly 
       11  Bottom View 
       12  Center Support 
       13  Center Support Brace 
       14  Circuit  1   
       15  Circuit  2   
       16  Circuit  3   
       17  Circuit Switch 
       18  Clear Plastic Cover 
       19  Connecting Rod Hole 
       20  Connecting Rod to Heat Sink 
       21  Connecting Rod to Radial Arm 
       22  Connecting Rod 
       23  Control Fingers 
       24  Control Knob 
       25  Control Knob Position Indicator 
       26  Control Knob Shaft 
       27  Control Knob Shaft Hole 
       28  Control Mechanism Mounting Plate 
       29  Cooling Fans 
       30  Corner Connector 
       31  Cover Plate 
       32  Cover Plate Holes 
       33  Curtain 
       34  Curtain Seem 
       35  Curtains Extended 
       36  Diffusion Door 
       37  Diffusion Holder 
       38  Diffusion Holder Bottom Rail 
       39  Diffusion Holder Pull Tab 
       40  Diffusion Holder Top Piece 
       41  Dimmer 
       42  End Brace 
       43  End Rod Inner 
       44  End Rod Outer 
       45  End Rod Restraint 
       46  End Rod 
       47  End Rods Bracket 
       48  Exhaust Vent 
       49  Extending Rods 
       50  Fan Mounting Plate 
       51  Fan Mounting Plate Holes 
       52  Fan Outlet 
       53  Female Hook and Eye Strip 
       54  Finger and Arm Connection 
       55  Flap Cover 
       56  Flap Mount Bracket Attachments 
       57  Flap Retaining Bracket 
       58  Flap Retaining Bracket Assembly 
       59  Flaps Extended 
       60  Flaps Open curtains Folded 
       61  Flaps Open Curtains Unfolded 
       62  Flaps Retracted 
       63  Friction Hinge 
       64  Front Cover 
       65  Front View 
       66  Fuse 
       67  Heat Sink 
       68  Heat Sink Compression Screw 
       69  Heat Sink Fin 
       70  Heat Sink Mount 
       71  Heat Sink Mounting Board 
       72  Heat Sinks with LEDs 
       73  Hinge 
       74  Indicator Light(s) 
       75  Inner Case 
       76  Inner Case—Expanded 
       77  Inner Case—Retracted 
       78  Inner Extending Rod 
       79  Latch Assembly 
       80  Latch Catch 
       81  Latch Hook 
       82  Latch Mount 
       83  Latch Mounting Holes 
       84  Latch Notches 
       85  LED 
       86  LED Mounting Screw 
       87  Left Flap Assembly 
       88  Line Conditioner 
       89  Lower Curtain 
       90  Lower Flap 
       91  Male Hook and Eye Tab 
       92  Master Switch 
       93  Noise Baffle 
       94  Nut 
       95  Outer Case 
       96  Outer Case Expanding Slot 
       97  Outer Extending Rod 
       98  Pivot Point 
       99  Power Cord 
       100  Power Cord Storage Box 
       101  Power Cord Storage Door 
       102  Power Cord Storage Door Opening 
       103  Power Cord Storage Door Hook and Eye—Female 
       104  Power Cord Storage Door Hook and Eye—Male 
       105  Power Input 120 Volts AC 
       106  Power Supply 
       107  Pull Tab 
       108  Radial Arm and Finger Connection 
       109  Radial Arm to Connecting Rod 
       110  Radial Arm 
       111  Radial Finger 
       112  Rear View 
       113  Recessed Knob Area 
       114  Recessed Switch Panels 
       115  Remote Control Box 
       116  Remote Control Cable 
       117  Return Spring 
       118  Rivet 
       119  Rod Pinch Bracket 
       120  Rod Restraint 
       121  Rod Separator 
       122  Rods Extended 
       123  Screw 
       124  Shaft Finger and Arm Connection 
       125  Side View Cases Expanded 
       126  Side View Cases Retracted 
       127  Spacer 
       128  Spacer/Mounting Foot 
       129  String 
       130  String Extended 
       131  String Retainer 
       132  Switch and Dimmer Remote Control Plug 
       133  Switch and Dimmer Remote Control Socket 
       134  Switch Mounting Holes 
       135  Switch 
       136  Fluoropolymer Bracket 
       137  Top Flap Assembly 
       138  Upper Curtain 
       139  Upper Flap 
       140  Ventilation Flow 
       141  Ventilation Holes 
       142  Ventilation Partition 
       143  Washer 
       144  Wiring Loom 
       145  Flaps Closed 
       146  LED Tilted 
       147  Connecting Wires 
     DETAILED DESCRIPTION OF THE DRAWINGS 
     In the following detailed description of the preferred embodiment, reference is made to the accompanying drawings that form a part hereof, and in which is shown, by way of illustration, a specific embodiment in which the invention may be practiced. It is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the present invention. 
     In the following detailed description of various embodiments of the invention, numerous specific details are set forth in order to provide a thorough understanding of various aspects of one or more embodiments of the invention. However, one or more embodiments of the invention may be practiced without these specific details. In other instances, well-known methods, procedures, and/or components have not been described in detail so as not to unnecessarily obscure aspects of embodiments of the invention. 
       FIG. 1  is a perspective view of one embodiment of the LED fixture with the cases expanded, the flaps open and extended, and the curtains unfolded.  FIG. 1  shows the expanded cases  76  with the outer case  95 , the flaps open and curtains unfolded  61 , the female hook and eye strip  53 , the curtains  33  and diffusion doors  36 . The curtains  33  may be unfolded and wrapped around the outside of the flaps, by way of the hook and eye  53  or similar attachment means, to block light from escaping. Diffusion doors  36  bridge the gap between the outer case and the flaps. 
       FIG. 2  is a perspective view of one embodiment of the LED fixture with the cases expanded, the flaps open and extended, and the curtains folded.  FIG. 2  shows the expanded cases with the flaps open and the curtains folded  60 , and the curtains  33  are folded and secured to the lower and upper flaps. In the best mode, four flaps are mounted to the front of the outer case with friction hinges to hold them in place. These flaps work independent of each other. When the flaps are open to the widest, the light can spill out and spread to its maximum. As the flaps are narrowed, the light will be removed from the outer areas when it is not needed. This allows the fixture to be set to light a specific object and not the area around it. 
     As seen in  FIG. 2 , when the flaps are wide open, there is a gap between the flaps and light leaks out. Curtains, mounted to the flaps, block the light that leaks out. There are four curtains and when not in use, they are held out of the way by hook and eye. Two of the curtains are mounted to the top flap and held in place by hook and eye, or similar attachment means, and the other two are mounted to the bottom flap. When in use, the curtains are released from the top and bottom flaps and wrap around the outside of the flaps. The curtains wrap over the opening between the flaps and block the light from escaping. Hook and eye, or similar attachment means, allows for adjustment and fit at any gap between the flaps. 
       FIG. 3  is a front view of one embodiment of the LED fixture&#39;s LED configuration, with the flaps open and extended, and the curtains unfolded.  FIG. 3  shows the front  65  of the invention with flaps open and curtains unfolded  61 , curtains  33  around the fixture, the front cover  64 , and heat sinks with LEDs  72 . The front cover  64  has holes so that the LEDs on heat sinks  72  can move on their pivot points and the light emitted will not be blocked. The center heat sink is rigidly mounted so it only has a round hole. Behind each hole is a LED mounted on a heat sink  72 . 
       FIG. 4  is a front view of one embodiment of the LED fixture&#39;s LED configuration, with the flaps open and retracted, and the curtains folded.  FIG. 4  is a view of the front  65  view of the fixture with the flaps  61  open and the curtains  33  folded. 
       FIG. 5  is a rear view of one embodiment of the LED fixture, showing the bale, all the controls, the hook and eye tabs, and the exhaust vent.  FIG. 5  shows the rear of the inner case  75  with male hook and eye tabs  91 , female hook and eye tabs  53 , the exhaust vent  48 , the bale hand wheels  6 , the bale extensions  5 , the latch assemblies  79 , the bale  4 , the indicator lights  74 , the recessed switch panels  114 , the switches  135 , the dimmer  41 , the switch and dimmer remote control socket  133 , the recessed knob area  113 , the control knob  24 , and the control knob position indicator  25 . The tabs  91  and  53 , which usually hold the expanding cases, are wrapped around the back of the fixture to hold it closed. 
     The electrical switches  135  include a master on/off switch, which controls all power to the fixture. The dimmer  41  also controls all circuits collectively. The circuit switches  135  control the circuits individually in designated patterns and a turbo switch eliminates the ninth LED when the nine LEDs are in series. These switches are located on the back of the fixture and are sunk into the fixture to protect the switches during transportation or storage. The switches are also angled upwards for easy accessibility. All the switches and the dimmer can be operated remotely through a hard wire, DMX, infra red and radio control. 
     In  FIG. 5 , when the turbo switch is up, it eliminates one of the nine LEDs in series, which increases the light output. When the switch is down, the ninth LED is connected and that circuit decreases in light output. The turbo switch is isolated from the circuit and master switches for clarity of operation. Indicator lights  74  give the visual status of each switch. When the switch is up, the indicator light  74  will illuminate, and will turn off when the switch is put down. Recessed switch panels  114  protect the switches by placing them back within the fixture. The switches are also angled up for easy accessibility. The circuit and master switches  135  also have a separation between them to avoid any accidental switching. The first switch lights the first circuit, the second switch lights the second circuit and the third switch lights the third circuit. The master switch lights all three circuits. The dimmer control  41  is counter-sunk for protection. 
     In  FIG. 5 , the remote socket  133  is where the remote control is plugged in, when use of the remote control is desired. Control knob  24  turns to change the position of the LEDs. When the knob is turned counterclockwise to the flood position, the LEDs point outward and spread the light out. When the knob is pointed towards the neutral position, the LEDs point straight out. When the knob is turned clockwise to the spot position, the LEDs point to the center and concentrate the light output. The recessed knob area  113  countersinks the knob into the fixture to protect the knob from damage. Control knob position indicator  25  is an arrow on the back of the control knob  24  that moves with the control knob  24  to indicate its relation to the flood, neutral, and spot positions. 
     The bale  4  functions as a tilting device, allowing the user to tilt the fixture up and down or left and right. The bale  4  also telescopes out using bale extensions  5  to make it longer, allowing the fixture to tip down without hitting the bale. There are latches  79  to hold the bale in either the retracted of expanded position. To retract the bale  4 , a user holds the top extension  5  and pushes both latches  79  at the same time. This action helps to avoid the fixture from slamming downward. 
     The LED position control mechanism  24  moves the heat sinks and changes their direction. The heat sinks are angled to the center of the fixture. The heat sink sits on two aluminum mounts that allow the heat sink to pivot or rock and change its angle and direction. Although the heat sinks can be stopped in many positions, there are three basic positions: neutral, flood, and spot. 
     It is not necessary for the center heat sink to move, so it is isolated, mounted rigidly, and not connected to the LED position mechanism. A control knob  24  protrudes out of the back of the fixture and controls the action of the pivoting LEDs. It can be turned clockwise and counter clockwise. When the knob is in the center, it is in the neutral position. When it is turned counterclockwise, it is in the flood position. When turned clockwise, it is in the spot position. Notches hold the control knob in the designated position. 
     Exhaust vent  48  is part of the ventilation system and is where air that has circulated thru the fixture to remove heat from the heat sinks exits into the atmosphere. Male hook and eye  91  and female hook and eye  53  are used to secure the inner case and outer case in any desired position. 
       FIG. 6  is a right side view of one embodiment of the cases in a retracted position, without the flaps, without the diffusion door and with the flap-retaining bracket  58 , which holds the necessary hardware to mount the flaps to the outer case.  FIG. 6  shows the inner cases retracted  77  with the diffusion holder top piece  40 , bale hand wheel  6 , bale extension  5 , latch assembly  79 , bale  4 , bale pin  8 , diffusion holder bottom rail  38 , flap retaining bracket assembly  58 , flap retaining brackets  57 , and latch catch  80 . The bale hand wheel  6 , when loosened, can be tipped up and down, and when the hand wheel is tightened, the bale  4  is locked in place. The bale extensions  5  make the bale  4  longer so the fixture can tilt down without hitting the bale  4 . 
     In  FIG. 6 , the bale is in the retracted position. The latch assembly  79  locks the bale  4  in the expanded or retracted positions. The bale  4  is used to pan and tilt the fixture, allowing the fixture to point anywhere. The bale pin  8  allows the fixture to be mounted to a stand or hanging device. The diffusion holder bottom rail  38  and diffusion holder bottom rail  40  work together to insert, remove, and to hold diffusion or color corrections that may be used. There are three ways to insert diffusion of color corrections into the diffusion track. Diffusion or color corrections can be inserted into the diffusion area from the top or from either side. This is possible due to the special shape of the diffusion door top piece  40 . 
     The diffusion holder bottom rail  38  is located at the outer edge of the outer case. This is where diffusion and color corrections sit or rest on when they are inserted. The diffuser softens the light and color corrections alter the color temperature. A specially designed bracket  40  at the top allows the three way insertion. The flap retaining bracket assembly  58  has all the flap retaining brackets mounted to it. The flap retaining bracket  57  which contains the latch catch  80  accepts the latch hook ( FIG. 30 , item  81 ) to mount the flaps to the fixture. Only one of the two catches on each flap needs to be released for removal. The other latch, when the flap is pulled to the side, will slide past the latch catch and release. 
       FIG. 7  is a right side view of one embodiment of the cases in an expanded position, without flaps mounted, and with the diffusion door.  FIG. 7  shows the side view of the cases expanded  125  with the inner case  76 , the outer case  95 , female hook and eye strips  53  and male hook and eye strips  91 , diffusion door  36 , with pull tabs  107 , outer case expanding slot  96  and bale extension  5 . The high-powered LED lighting unit consists of a two cases an inner case  76  and outer case  95 . The inner case  76  shown expanded contains all of the electrical, electronic, and mechanical components needed for the LED light to function as an illuminating fixture. The outer case  95  serves as a platform for the hardware that alters and controls the light emitting from the LEDs. 
     As seen in  FIG. 7 , the inner case fits within the outer case. When in use, the adjustable cases can separate to expand and make the unit longer, with stops to keep the cases from over-extending. When not in use or in storage, the inner case slides within the outer case. The two cases lock in a user&#39;s desired setting using hook and eye strips  53  and  91 . The expanding cases serve two purposes. First, when the cases are contracted, they have a smaller profile, making them more portable and thereby taking up less space in transit or storage. Second, when expanded, they increase the distance between the LEDs mounted within the inner case and the diffuser that is inserted at the front of the outer case, thus creating a softer, more even light and eliminating the multiple shadows created by the LEDs. 
     Three diffusion doors  36  are attached to the outside edge of the outer case. One on the top and one on each side. A diffusion door is not needed on the bottom as the diffusion track ( FIG. 6 , item  38 ) serves as a shelf. These diffusion doors bridge the gap between the outer case and the adjustable light controlling flaps. These diffusion doors have three functions. One is to block any light that spills out from the gap between the outer case and the adjustable light controlling flaps. A second function is to work as doors, so diffusion or color corrections can be inserted into the diffusion track. A third function is to hold in the diffusion or color corrections so they do not fall out. The diffusion door  36  straddles the outer case  95  and the flap retaining bracket ( FIG. 6 , item  58 ). The diffusion doors are made of plastic and held on by hook and eye tabs  107  mounted to both sides of the diffusion door  36 . The hook and eye tabs that are mounted to both sides of the diffusion door are for easy opening as the door can be opened from either side, because the hook and eye tabs also serve as a hinge. The outer case expanding slot  96  allows the outer case to slide back and forth to any adjusted setting. Bale extension  5  allows the bale to be extended or retracted as needed and is in the expanded position which allows the fixture to tilt down at a greater angle. 
       FIG. 8  is a right side view of one embodiment of the cases in an extended position, with the flaps mounted and folded.  FIG. 8  is a side view of the invention with the cases expanded  125  and the flaps folded closed  145 , the power cord storage door  101  with pull tabs  107 . When in storage or transit, the power cord is inserted into the storage compartment where it is out of the way and will not get tangled with other objects. The power cord storage door  101  is mounted with hook and eye tabs  107  on both sides so that it can be opened from either side to allow easy access to open the door as the hook and eye also serves as a hinge. 
       FIG. 9  is a right side view of one embodiment of the cases in a retracted position, with the flaps mounted and folded.  FIG. 9  is a side view of the invention with the cases retracted  126 , the flaps folded closed  145 , and the bale extensions  5  retracted. When not in use, the four flaps can be folded in flush with the front of the fixture. The bottom flap is folded in last and hook and eye is used to secure the flaps in place. This is the way it would typically be transported or stored because it takes up less space and allows for maximum protection of the components of the fixture. 
       FIG. 10  is a front view of one embodiment of the LEDs mounted on the heat sink.  FIG. 10  shows the heat sink  67  with the heat sink compression screws  68 , the heat sink fins  69 , the LEDs  85  and the LED mounting screws  86 . The unit uses high-powered LEDs  85 , which requires the LEDs  85  to be mounted on heat sinks  67 , as LEDs  85  can reach extreme temperatures and will result in catastrophic results if not mounted on heat sinks. The heat sink  67  is made of strips, preferably aluminum, cut to equal lengths and compressed in the center by compression screws  68 . The strips are them fanned out so that they are separated, then twisted to an angle, preferably 15 degrees, to form fins  69 . Heat sink compound is applied between the strips at the compression area to further aid in the heat transfer process. On one side, an area is compressed and machined to make a smooth surface for the LED to sit on and to make a good heat transferable surface. The heat sink  67  is mounted using screws  86  on the four holes of the LED pad, and heat sink compound is applied between the LEDs  85  and the heat sink  67 . 
       FIG. 11  is a right side view of one embodiment of the inner case of the ventilation system.  FIG. 11  shows the ventilation system inside the inner case  75  with an exhaust vent  48 , ventilation partition  142 , cooling fans  29 , noise baffles  93 , fan mounting plate  50 , an air intake  2 , a clear plastic cover  18 , and a front cover  64 . The inner case  75  is completely enclosed, except for the air intake vent  2  located on the bottom of the fixture, which draws in cool air, and the exhaust vent  48  located on the top back of the fixture, which lets the heated air out. 
     The fans  29  are ultra quiet and create convection within the fixture. The fans  29  are mounted to the fan mounting plate  50 , which has holes for the air to circulate and is elevated along the bottom to also circulate air pushed by the fans  29 . Noise baffles  93  deflect the noise of the fans  29  for quiet operation. The ventilation partition  142  seals off the inner case  75 , creating a pathway for the air pushed by the fans. The clear front cover  18 , mounted to the inside of the front cover, keeps the air from escaping out the front of the fixture, maintaining a closed circulating system of convection. The front cover  64  has holes but the clear front cover  18  blocks the air from escaping and allows air to circulate. 
     The ultra-quiet internal fans  29  are mounted inside the fixture to further aid in cooling the LEDs. With the use of noise baffles  93  and a partition  142 , the noise of the fans is inaudible. The interior of the fixture is lined with noise-deadening material to further lessen the noise of the fans. The inner case  75  is designed so that a convection of air is produced by air entering from a vent in the bottom and an exhaust outlet on the top to ventilate and cool the LEDs. 
       FIG. 12  is a right side view of one embodiment of the ventilation system, with arrows that show ventilation flow within the fixture.  FIG. 12  shows the inner case  75 , with arrows that show the ventilation flow  140  within the fixture, an exhaust vent  48 , cooling fans  29 , noise baffles  93 , an air intake  2 , a fan mounting plate  50 , a control mechanism mounting plate  28 , heat sinks  67 , a clear plastic cover  18 , and a front cover  64 . Cool air enters through the air intake  2  at the bottom of the fixture. When the air is drawn in, it flows past the noise baffles  93  and is then pushed by the fans  29  through the holes in the fan mounting plate  50  to enter the chamber between the fan mounting plate  50  and the control mechanism mounting plate  28 . It then passes through holes in the control mechanism mounting plate  28  and enters the front chamber where the heat sinks  67  are located. The clear front cover  64  keeps air from escaping out the front of the fixture. The air then passes over the heat sinks  67 , taking heat off the heat sinks and out through the exhaust vent  48  on the back of the fixture. 
       FIG. 13  is a back view of one embodiment of the ventilation system&#39;s fan configuration, power cord storage area, and power cord storage door, with arrows that show the direction of circulation.  FIG. 13  shows the rear view  112  of the ventilation system with an exhaust vent  48 , cooling fans  29 , the power cord storage box  100 , the power cord  99 , the power cord storage door  101 , pull tabs  107 , and the air intake  2 . The view shows how the cooling fans  29  are configured around the power cord storage box  100  and also shows the power cord storage door  101  and the power cord  99 . Arrows show the air entering from the bottom air intake  2  and out the top through the exhaust vent  48 . 
     A power cord  99  supplies the fixture with 120 volts AC to the power supplies. The power supplies rectify and properly regulate the power to the LEDs. When not in use, the power cord can be inserted into a compartment within the fixture. The power storage compartment  100  has a door to contain the power cord. The door is made of plastic and is held in place by hook and eye tabs  107 . 
       FIG. 14  is a bottom view of one embodiment of the ventilation system.  FIG. 14  shows the bottom  11  of the fixture, with the air intake  2 , the control mechanism mounting plate  28 , the clear plastic cover  18 , the fan mounting plate  50 , and the front cover  64 . Air is drawn in from the air intake vent  2 , and passes thru holes in the fan mounting plate  50 , and then passes thru holes in the control mechanism mounting plate  28  into the heat sink chamber, and out the exhaust vent ( FIG. 13 , item  48 ). The clear front cover  18  blocks the air from escaping thru the holes in the front cover  64 . 
       FIG. 15  is a front view of one embodiment of the inner case with the radial arms, radial fingers, and brackets.  FIG. 15  shows the front view  65  of the inner case  75 , with the radial arms  110 , the radial fingers  111 , the finger and arm connections  54 , and the fluoropolymer brackets  136 . The radial arms  110  are connected to the radial fingers  111  at the finger and arm connection  54 . The radial finger  111  protrudes through a hole in the radial arm  110 . The radial arms  110  are mounted using the fluoropolymer brackets  136 , which allow radial arms  110  to slide within them easily without lubrication. The fluoropolymer brackets  136  secure the radial arms from slipping out of the radial fingers  111 . 
     A shaft is connected to the control knob. The other end of the shaft is connected to the wheel which has rods (called fingers) that come out of the wheel at 90-degree angles. These fingers protrude through a hole in the radial arms to push and pull them, causing them to move the connecting rod. The connecting rod attaches to the radial arm and to one of the end screws that holds the heat sink together. As the radial arm moves, it also moves the connecting rod, which pivots the heat sinks and changes their direction. These arms are held in place by brackets, which hold the radial arms in place and allows the radial arms to easily slide within the brackets without lubrication. 
     The connecting rods are made of fluoropolymers to electrically isolate the heat sinks from each other, as each heat sink has a positive potential and in a series circuit would create a short circuit. When material is placed in front of the light in the diffusion track to soften the light, the spot, flood and neutral positions are also affected. The spot position of the light concentrates the light on the surface of the diffuser and makes the light harder with defined shadows and maximum intensity. The neutral position, where the heat sinks are facing straight out, gives the most even spread of light, which optimizes spread and intensity. The flood position faces the LEDs outward, creating a softer light and decreased intensity. The position control mechanism can also be controlled by servo motors mounted within the fixture with a potentiometer mounted on the back of the fixture. The servo can also be operated remotely using hard wire, DMX, infra red, or radio control. 
       FIG. 16  is a front view of one embodiment of the inner case, with the control mechanism mounting plate attached.  FIG. 16  shows the front  65  of the inner case  75 , with the control mechanism mounting plate  28  installed, the ventilation holes  141 , the connecting rod holes  19 , and the spacer/mounting foot  128 . The hardware is mounted to the back of the control mechanism mounting plate  28 . The control mechanism mounting plate  28  has ventilation holes  141  and holes for the connecting rods  19  to pass through to connect the heat sink to the radial arms. The control mechanism mounting plate  28  is mounted on feet  128  that elevate the plate so that the fans can push air under the plate to the LEDs. 
       FIG. 17  is a front view of one embodiment of the inner case, with the control mechanism mounted on the mounting plate.  FIG. 17  shows the front view  65  of the inner case  75 , which shows the two previous views combined with the radial arms and radial fingers mounted to the control mechanism plate. 
       FIG. 18  is a magnified, right side cross section view of one embodiment of the inner case.  FIG. 18  is a right side cross section view, magnified to show how the different layers of the fixture are configured.  FIG. 18  shows the inner case  75 , with the control knob  24 , the recessed knob area  113 , the indicator lights  74 , the switches  135 , the recessed switch panels  114 , the control knob shaft  26 , the noise baffles  93 , the cooling fans  29 , the radial fingers  111 , the power supply  106 , the fan mounting plate  50 , the radial arm  110 , the control mechanism mounting plate  28 , the connecting rod  22 , the heat sinks  67 , the clear plastic cover  18 , and the front cover  64 . 
     Inner case  75  is cut to show the recessed knob area  113  and the recessed switch panels  114 . The indicator lights  74  and switch  135  are shown mounted in the safety of the recessed areas. Noise baffles  93  deflect the noise made by the fans  29  for quiet operation. Power supplies  106  are shown mounted to the fan mounting plate  50  along with the fans and baffles. Radial arms  110  are shown mounted on one side of plate  28  and the heat sinks  67  mounted on the other side of the plate with the connecting rods  22  passing through the plate connecting the two together. When control knob  24  is turned, the fingers  111  pull when turned in one direction and push when turned in the other direction. This pushing and pulling causes heat sinks  67  to respond by moving on their pivot point, changing the direction of the light. Again, the clear front cover  18  blocks the air from the holed front cover  64  from escaping. 
       FIG. 19  is a front view of one embodiment of the radial arms, radial fingers and brackets.  FIG. 19  is a front view of the radial arms  110 , radial fingers  111 , control knob  26 , and brackets  136 . This view shows how the radial arms  110 , radial finger and arm connection  54  and the fluoropolymer brackets  136  work together to rock the heat sinks on their pivot points and change their direction. 
       FIG. 20  is a magnified view of one embodiment of the radial arms  110  and fingers  111  showing the control knob  26 . 
       FIG. 21  is a further magnified view of one embodiment of the radial arms  110  and fingers  111 . This figure shows how the radial fingers  111  protrude through a hole in the radial arm  110  to form a radial arm and finger connection  108 . 
       FIG. 22  is a top view of one embodiment of the heat sink  67  with LEDs  85  attached.  FIG. 22  shows the heat sink  67  with radial arm  110 , rivet  118 , fluoropolymer bracket  136 , radial arm to connecting rod  109 , screw  123 , bearing  9 , connecting rod  22 , spacer  127 , connecting rod to heat sink  20 , pivot point  98 , heat sink fin  69 , heat sink compression screw  68 , heat sink mount  70 , and LED  85 . The heat sink compression screws  68  compress the aluminum strips to efficiently transfer heat from the LED  85  to the heat sink fins  69 , where heat is dissipated into the atmosphere. The heat sink  67  is mounted to the heat sink mounting board using the heat sink mount  70  and the center compression screw  68 . A bearing  9  allows the nut on the center screw  68  to be tightened to compress and still allow the heat sink  67  to pivot at a pivot point  98 . Radial arm  110  passes through the fluoropolymer bracket  136 , which is held in place by a rivet  118 . The end of the radial arm  110  is attached to the connecting rod  22  at connecting rod point  109 . It is held together by screw  123  which has a bearing  9  that allows the nut on that screw to be tightened to compress the heat sink  67  and still allow the connecting rod  22  and the radial arm  110  to move freely. The other end of the connecting rod  22  is mounted to one of the outer screws on the heat sink  67  at the connecting rod  22  to heat sink point  20 . A spacer  127  extends the screw out so that the control rod  20  will not hit the other screws. A bearing  9  allows the screw to compress the heat sink  67  and allows the connecting rod  22  to move freely. 
       FIG. 23  is a side view of one embodiment of the heat sink.  FIG. 23  shows the heat sink  67  with connecting rod to heat sink  20 , pivot point  98 , connecting rod  22 , heat sink mount  70 , heat sink mounting board  71 , radial arm  110  and radial arm to connecting rod  109 .  FIG. 23  shows the relationship between the heat sink  67 , the connecting rod  22  and the radial arm  110 . The radial arm  110  is shown on the bottom side of the heat sink mounting board  71 . The connecting rod  22  passes through the heat sink mounting board  71  to connect to the radial arm  110 . Connecting rod  109  connects to the heat sink using the connecting rod to heat sink  20  connection. The heat sink  67  sits on a heat sink mount  70  and pivots at pivot point  98 . 
       FIG. 24  is a side view of one embodiment of the heat sink, shown tilted.  FIG. 24  shows how the tilted heat sink  146  will tilt down when the radial arm  110  moves to the right. If the radial arm  110  moves to the left, it will push on the connecting rod  22 , which will in turn push the tilted heat sink  146  and move it in the other direction. 
       FIG. 25  is a front view of one embodiment of the inner case that shows all of the LED electrical circuits.  FIG. 25  shows all three of the electrical circuits  3  of LEDs, with the inner case  75 , connecting wires  147 , power supply  106 , indicator lights  74 , circuit switches  17 , dimmer  41 , line conditioner  88 , ninth LED circuit switch  1 , master switch  92 , power input  105 , and fuse  66 . The heat sinks with LEDs are in series and are divided into three circuits  3 . Two circuits have eight LEDs in series and one circuit has nine LEDs in series. The circuits are divided into patterns so that each circuit maintains an even spread of light. Each circuit is individually powered with its own power supply  106 , an indicator light  74 , and a circuit switch  17 . 
     The circuits of LEDs are in a rectangular configuration. Some circuits have eight LEDs in series and other circuits have nine LEDs in series. The circuits with nine LEDs in series have a turbo switch, which eliminates one LED from the series, leaving a circuit of eight in a series. Eliminating one LED from the series increases the output of that circuit, thus giving the user two different light densities from one circuit of LEDs. Each circuit has its own power supply  106  mounted internally within the inner case. 
     Line conditioner  88  helps to stabilize the AC Power and eliminate line fluctuations that may occur. Dimmer  41  is in series with all three circuits  3  and affects them all at the same time. The power input is 120 Volts AC  105  and is protected by a fuse  66 . Master switch  92  also controls power to all three circuits  3  and an indicator light  74  illuminates when the master switch  92  is in the “On” position. The ninth LED circuit switch  1 , also called the Turbo Switch, eliminates one LED from the circuit with nine LEDs in series. The all circuits  3  view shows all the circuits as combined. The power supply  106  is connected to the LEDs by connecting wires  147 . 
     A line conditioner  88  or stabilizer keeps power line interference from causing a fluctuation in the light emitted from the LEDs. The AC line stabilizer compensates for interference in the power being supplied to the LED fixture. LEDs are sensitive to changes in the input power. An electric motor can cause a wobble in the input power, causing the LED fixture to react similarly, and causing the light output to vary. The line conditioner or stabilizer will also prevent the light from dipping when another device on the same AC line is turned on. 
       FIG. 26  is a front view of one embodiment of the inner case that shows the first circuit.  FIG. 26  shows the configuration of the first circuit  14  in a circular pattern, 9 th  LED switch  1  (turbo switch), power supply  106 , indicator light  74 , and switch  17 . The arrangement of the nine LEDs is spread evenly. The circuit has the capability to eliminate one LED with the ninth LED circuit switch  1  and have only eight in series to increase the output or, the ability to turn the ninth LED on and have all nine in series, which decreases the light output. In  FIG. 26  the center LED can be eliminated. This circuit has its own separate switch  17 , power supply  106  and indicator light  74 . 
       FIG. 27  is a front view of one embodiment of the inner case that shows the second circuit.  FIG. 27  shows the configuration of the second circuit  15  with a series of eight LEDs spread evenly, power supply  106 , indicator light  74 , and switch  17 . This circuit has its own separate switch  17 , power supply  106  and indicator light  74 . 
       FIG. 28  is a front view of one embodiment of the inner case that shows the third circuit  16 , the power supply  106 , indicator light  74 , and switch  17 .  FIG. 28  shows the configuration of the third circuit  16  with a series of eight LEDs spread evenly in a diamond arrangement. This circuit has its own separate switch  17 , power supply  106  and indicator light  74 . 
       FIG. 29  is a front view of one embodiment of the remote control box.  FIG. 29  shows the remote control box  115  with the remote control cable  116 , the switch and dimmer remote control plug  132 , the dimmer  41 , the ninth LED circuit switch  1 , the circuit switches  17 , and the master switch  92 . This box is used to control the fixture from a distance. The switch and dimmer control socket  132  plugs into a socket on the back of the fixture. When this box is plugged in, the remote overrides the switches  17  and dimmer  41  mounted on the fixture so that the fixture is controlled by the switches on the remote control box  115 . The switches include the ninth LED switch  1  (also called the Turbo Switch), the three circuit switches  17 , the master switch  92  and the dimmer  41 . The cable  116  can be extended so that the fixture can be operated from a lengthy distance, such as 100 feet. 
     The remote control box plugs into the remote control socket and allows the fixture to be controlled from a distance when it placed in an inaccessible place, such as being hanged or raised high on a stand. The box will override the switches and dimmer on the fixture. The cable mounted to the remote can be of various lengths, and extensions can be added to extend the control box to a length of one hundred feet or more. 
     A dimmer dims the LEDs when less light is needed. The dimmer is preferably a standard neon dimmer, and is in series with the LED circuits. The knob that controls the dimmer protrudes through the back of the fixture for adjustment. The dimmer controls the light from 0 percent to 100 percent. As a factory setting, turning the dimmer clockwise dims the light and turning it counter-clockwise increases the light. Since that configuration is contrary to other dimmers used in the movie industry, the factory settings are reversed to have continuity with other dimmers. Clockwise will increase the light and counter-clockwise will decrease the light. The dimmer also has a remote function, which allows it to be controlled remotely through a hard wire, DMX, infra red or radio control device. 
       FIG. 30  is a top view of one embodiment of the case in an expanded position, with open and retracted flaps and folded curtains.  FIG. 30  is a top view of the fixture with flaps open but retracted  62 , rod separator  121 , rod pinch bracket  119 , extending rods  49 , corner connector  30 , string  129 , end rod restraint  45 , male hook and eye tab  91 , end rods  46 , center support  12 , string retainer  131 , and curtains  33 . The flap cover has been removed to show the inside workings of the fixture. There is a rod separator  121  at each end of the extending rods  49 . Rod separator  121  keeps the extending rods  49  spread apart to create friction at the pinch point  119  so that the extending rods  49  will stay in place when adjusted. End rods  46  are held together by the end rod restraint  45 . Male hook and eye tab  91  holds the curtains  33  in place by connecting to hook and eye on the flap cover (not shown). String  129  is relaxed when the flap is retracted and string retainer  131  keeps the string from becoming tangled. Curtains  33  are also retracted and gathered at one end. Center support  12  gives the flap stability from flexing and has a rod pinch bracket  119  mounted at each end. Corner connectors  30  hold the end rods  46  and the extending rods  49  together. 
       FIG. 31  is a top view of one embodiment of the case in an expanded position, with open and extended flaps and folded curtains.  FIG. 31  shows the flaps extended  59 , diffusion top piece  40 , flap retaining bracket  57 , end brace  42 , friction hinge  63 , extended rods  122 , string extended  130 , latch assembly  79 , extended curtains  35 , and latch hook  81 . The expanding rods  122  are shown extended out. String  130  is shown extended to keep the flap from over-extending. Curtains  59  are extended and the gathering at one end is stretched out. Diffusion holder top piece  40  is shown followed by the flap retaining bracket  57  to which the latch assembly  79  is attached. Latch hook  81  is mounted to the end brace  42 . When the flap retaining bracket  57  and the end brace  42  are joined together the latch hook  81  slips into the latch assembly  79  and secures the flaps to the fixture. To remove the flaps only one latch hook  81  needs to be released as the other latch hook will slide out when the flaps are moved to the side. Friction hinges  63  are also mounted to the end brace  42  and allows the flaps to open and close and holds them in a user&#39;s desired position. 
     The friction hinges  63  allow the flaps to move to an open or closed position or to stay in any position that may be required. The flaps are made of carbon fiber rods of two sizes. One fits inside the other, allowing them to telescope so the flaps can be made longer or shorter, depending on the requirements desired. There is a double row of carbon fiber rods for strength and durability. The carbon fiber rods are joined at the corners to form a rectangle. The flaps are then covered by a lightweight opaque material to block light. Inside the flaps are two strings to keep the flaps from telescoping beyond the ends of the carbon fiber and coming apart. A center support with brackets on each end pinches the rods and works with the rod separators on the ends, creating friction which allows the rods to stay in a user&#39;s desired position. 
     These flaps can easily also be removed if not needed by using a quick release spring latch  81 . Each flap has two easy-release latches  81  to easily attach and remove the flaps from the flap retaining bracket. Only one latch  81  needs to be released to remove the flaps. When one latch  81  is released and the flap is pulled outward, the second catch slides past the catch and the flap comes off. 
       FIG. 32  is an exploded view of one embodiment of the flap assembly.  FIG. 32  shows the flap assembly with center support  12 , corner connector  30 , end brace  42 , diffusion holder pull tab  39 , diffusion door  36 , friction hinge  63 , flap retaining bracket assembly  58 , latch catch  80 , latch hook  81 , flap cover  55 , lower curtain  89 , male hook and eye tab  91 , inner extending rod  78 , outer extending rod  97 , end rod outer  44 , end rod inner  43 , rod separator  121 , string retainer  131 , upper curtain  138 , string  129 , screw  123 , return spring  117 , washer  143 , and nut  94 . 
       FIG. 33  is an exploded view of one embodiment of the inner case.  FIG. 33  shows the inner case  75  with air intake  2 , bale hand wheel  6 , bale mount hole  7 , bale  4 , bale pin  8 , dimmer  41 , female hook and eye strip  53 , indicator lights  74 , control knob shaft hole  27 , control knob position indicator  25 , control knob  24 , control knob shaft  26 , exhaust vent  48 , pull tab  107 , power cord storage door  101 , power cord storage door opening  102 , power cord storage door female  103  and male  104  hook and eye, power cord  99 , noise baffle  93 , power cord storage box  100 , latch hook  81 , latch mount  82 , latch notches  84 , line conditioner  88 , switch and dimmer remote control socket  133 , switch  135 , switch mounting holes  134 , ventilation partition  142 , washer  143 , screw  123 , return spring  117 , remote control cable  116 , switch and dimmer remote control plug  132 , remote control box  115 , and power supply  106 . 
       FIG. 34  is an exploded view of one embodiment of the radial arms and their assembly.  FIG. 34  shows the radial arms  110  with a connecting rod hole  19 , control knob shaft hole  27 , control mechanism mounting plate  28 , cooling fans  29 , fan mounting plate  50 , fan mounting plate holes  51 , fan outlet  52 , radial fingers  111 , spacer/mounting foot  128 , fluoropolymer bracket  136 , and ventilation holes  141 . 
       FIG. 35  is an exploded view of one embodiment of the heat sinks, fans and their assembly.  FIG. 35  shows the heat sink assembly with clear plastic cover  18 , connecting rod  22 , cover plate  31 , cover plate holes  32 , heat sink  67 , LED  85 , and wiring loom  144 . 
       FIG. 36  is an exploded view of one embodiment of the outer case.  FIG. 36  shows the outer case  95  with diffusion holder bottom rail  38 , diffusion holder top piece  40 , flap mount bracket attachments  56 , flap retaining bracket  57 , flap retaining bracket assembly  58 , latch assembly  79 , latch mounting holes  83 , latch hook  81 , male hook and eye tab  91 , nut  94 , outer case expanding slot  96 , return spring  117 , screw  123 , and washer  143 . 
       FIG. 37  is an exploded view of one embodiment of the flaps.  FIG. 37  shows the flaps with bottom flap assembly  10 , center support brace  13 , corner connector  30 , curtain seem  34 , female hook and eye strip  53 , flap cover  55 , end brace  42 , diffusion holder pull tab  39 , diffusion door  36 , end rod inner  43 , end rod outer  44 , end rods bracket  47 , friction hinge  63 , inner extending rod  78 , latch catch  80 , left flap assembly  87 , lower curtain  89 , return spring  117 , rod restraint  120 , rod separator  121 , spring  129 , top flap assembly  137 , and upper curtain  138 . 
     The foregoing description of the preferred embodiment of the invention has been presented for the purposes of illustration and description. While multiple embodiments are disclosed, still other embodiments of the present invention will become apparent to those skilled in the art from the above detailed description, which shows and describes illustrative embodiments of the invention. As will be realized, the invention is capable of modifications in various obvious aspects, all without departing from the spirit and scope of the present invention. Accordingly, the detailed description is to be regarded as illustrative in nature and not restrictive. Also, although not explicitly recited, one or more embodiments of the invention may be practiced in combination or conjunction with one another. Furthermore, the reference or non-reference to a particular embodiment of the invention shall not be interpreted to limit the scope the invention. It is intended that the scope of the invention not be limited by this detailed description, but by the claims and the equivalents to the claims that are appended hereto.