Patent Publication Number: US-2015078860-A1

Title: Apparatus for Mounting Enclosures and Fixtures and Electronics Contained Therein

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This patent application claims priority to provisional patent application entitled “Double Stud” filed on Sep. 17, 2013, having Ser. No. 61/878,629, which is hereby incorporated by reference. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates generally to mounting fixtures, and more particularly, to an apparatus for mounting enclosures, such as watertight enclosures containing electronics. 
     2. Description of Related Art 
     Current UL50 and UL508A standards require electrical enclosures to be supplied with mounting hardware that is used to mount the enclosure sub panel to the back of the enclosure wall. This is typically accomplished using a weld on panel studs. UL50 and UL508A standards also require that enclosure manufactures supply means for mounting an enclosure by an electrician using basic tools. The cheapest way for a manufacturer to meet the UL50 and UL508A standards is to include holes in the back of an enclosure and a bag of nuts, bolts and gaskets, in hopes that the electrician installs the gaskets correctly and water does not leak into the enclosure during the life of the enclosure installation which could last over 30 years. 
     One of the problems with just providing mounting holes in the back of the enclosure is that the electrical sub panel may be required to be removed prior to mounting the enclosure which can require hours of extra electrical labor if the electrician has to unwire pushbuttons and or other electrical devices that may be mounted on the enclosure door, and then re-wire and test the devices after the enclosure is mounted, and the sub panel reinstalled. If the electrician installing the enclosure is in a high risk wash-down area, a welding contractor is often hired to weld the mounting holes closed, and then weld on a bracket that the electrician can use to properly install the enclosure without removing the back panel in the enclosure. 
     Accordingly, there is a need for a more efficient and reliable apparatus for mounting fixtures, enclosures, watertight enclosures, and the electronics contained inside. 
     ASPECTS AND SUMMARY OF THE PRESENT INVENTION 
     One aspect of the present invention is to provide a more time efficient and adaptable apparatus for mounting watertight enclosures and electronics contained therein. 
     Another aspect of the present invention is to provide a more time efficient and adaptable apparatus for mounting general fixtures and enclosures, and components contained therein. 
     An additional aspect of the present invention is to provide a mounting apparatus that does not require electronics contained within an enclosure to be disconnected or remounted from their mounting surface, such as a sub panel, during the process of mounting the enclosure to a vertical wall. 
     A further aspect of the present invention is to provide a mounting apparatus that facilitates mounting an enclosure to a wall. 
     An additional aspect of the present invention is to provide a mounting apparatus that more reliably maintains a watertight seal of a watertight enclosure. 
     In order to achieve these aspects and others, the present invention provides a dual purpose fastener or stud that is installed and welded or otherwise secured onto the back of an enclosure, which still enables an electrician to mount a sub panel from inside of the enclosure, while mounting the enclosure itself from the outside, and further, without removing the enclosure sub panel. The present invention further eliminates the need for electricians to install gaskets to seal mounting holes because the fastener is welded in place, eliminating the requirements of special enclosure mounting gaskets and hardware. Additional mounting hardware can be included to mount the enclosure as close as one inch or less off the back of a wall or adjoining surface to as much as four inches or more of overall clearance, which is required for enclosure installations in food plants. 
     The fastener, stud, or apparatus of the present invention meets the requirements for UL50 and UL508A and associations of Underwriters Laboratories, Inc. (“UL”), Canadian Standards Association (“CSA”), and Association of Standardization and Certification (“ANCE”). The apparatus of the present invention, sometimes referred to by the inventor as a the Double Stud™ fastener, can be used on all types of fixtures and electrical UL50 enclosures, including enclosures for indoor locations (Types: 1, 2, 5, 12K and 13) or (NEMA: 1, 2, 5, 12K and 13), and enclosures for indoor and outdoor locations (Types 3, 3R, 3S, 4 4X, 6 and 6P) or (NEMA: 3, 3R, 3S, 4, 4X, 6 and 6P). 
     Accordingly, the present invention provides a stud or fastener for mounting an enclosure having a body with a first diameter, a length, a top, and a bottom. A head is connected to the top of the cylindrical body and extends beyond an outer surface of the cylindrical body. A cylindrical extension is connected to the bottom of the cylindrical body having a second diameter less than the first diameter, and an outer surface of the cylindrical extension is threaded. The cylindrical body includes a threaded cylindrical bore having an opening in the top of the cylindrical body, and the threaded cylindrical bore extends into the cylindrical body. 
     The foregoing has outlined, rather broadly, the preferred features of the present invention so that those skilled in the art may better understand the detailed description of the invention that follows. Additional features of the invention will be described hereinafter that form the subject of the claims of the invention. Those skilled in the art should appreciate that they can readily use the disclosed invention and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention, and that such other structures do not depart from the spirit and scope of the invention in its broadest form. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1   a  is a perspective view of a mounting apparatus configured in accordance with a preferred embodiment of the present invention; 
         FIG. 1   b  is a top view of the mounting apparatus shown in  FIG. 1   a;    
         FIG. 1   c  is a cross-sectional view of the mounting apparatus shown in and taken along line  1   c - 1   c  of  FIG. 1   b;    
         FIG. 2   a  is a perspective view of a mounting apparatus configured in accordance with another embodiment of the present invention; 
         FIG. 2   b  is a top view of the mounting apparatus shown in  FIG. 2   a;    
         FIG. 2   c  is a cross-sectional view of the mounting apparatus shown in and taken along line  2   c - 2   c  of  FIG. 2   b;    
         FIG. 3   a  is a perspective view of a mounting apparatus configured in accordance with a further embodiment of the present invention; 
         FIG. 3   b  is a top view of the mounting apparatus shown in  FIG. 3   a;    
         FIG. 3   c  is a cross-sectional view of the mounting apparatus shown in and taken along line  3   c - 3   c  of  FIG. 3   b;    
         FIG. 4   a  is a perspective view of a mounting apparatus configured in accordance with another embodiment of the present invention; 
         FIG. 4   b  is a top view of the mounting apparatus shown in  FIG. 4   a;    
         FIG. 4   c  is a cross-sectional view the mounting apparatus shown in and taken along line  4   c - 4   c  of  FIG. 4 ; 
         FIG. 5   a  is a perspective view of a mounting apparatus configured in accordance with a further embodiment of the present invention; 
         FIG. 5   b  is a top view of the mounting apparatus shown in  FIG. 5   a;    
         FIG. 5   c  is a cross-sectional view of the mounting apparatus shown in and taken alone line  5   c - 5   c  of  FIG. 5   b;    
         FIG. 6   a  is a perspective view of a mounting apparatus configured in accordance with a further embodiment of the present invention; 
         FIG. 6   b  is a top view of the mounting apparatus shown in  FIG. 6   a;    
         FIG. 6   c  is a cross-sectional view of the mounting apparatus shown in and taken alone line  6   c - 6   c  of  FIG. 6   b;    
         FIG. 6   d  is a side view of the mounting apparatus shown in  FIG. 6   a;    
         FIG. 7   a  is a perspective view of a mounting apparatus configured in accordance with a further embodiment of the present invention; 
         FIG. 7   b  is a top view of the mounting apparatus shown in  FIG. 7   a;    
         FIG. 7   c  is a cross-sectional view of the mounting apparatus shown in and taken alone line  7   c - 7   c  of  FIG. 7   b;    
         FIG. 8   a  is a front view of an enclosure utilizing a mounting apparatus configured in accordance with the present invention; 
         FIG. 8   b  is a cross-sectional view of the enclosure shown in and taken along line  8   b - 8   b  of  FIG. 8   a;    
         FIG. 8   c  is an enlarged view of the circled portion “ 8   c ” shown in  FIG. 8   b;    
         FIG. 9   a  is a rear view of an enclosure mountable in accordance with the present invention; 
         FIG. 9   b  is a cross-sectional of the enclosure shown in and taken along line  9   b - 9   b  of  FIG. 9   a;    
         FIG. 9   c  is an enlarged view of the circled portion “ 9   c ” shown in  FIG. 9   b;    
         FIG. 10   a  is a front view of an enclosure mountable in accordance with the present invention; 
         FIG. 10   b  is a cross-sectional of the enclosure shown in and taken along line  10   b - 10   b  of  FIG. 10   a ; and 
         FIG. 10   c  is an enlarged view of the circled portion “ 10   c ” shown in  FIG. 10   b.    
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring now to the drawings,  FIG. 1   a  is a perspective view of a fastener, stud, or mounting apparatus  200  configured in accordance with a preferred embodiment of the present invention.  FIG. 1   b  is a top view of the apparatus  200 , and  FIG. 1   c  is a cross-sectional view of the apparatus  200  shown in and taken along line  1   c - 1   c  of  FIG. 1   b . The apparatus  200  includes a cylindrical body  202  having a diameter D 20  and a length L 20 . The diameter D 20  and the length L 20  are not any particular value, but D 20  typically is around half an inch, and the length L 20  typically is around one inch. The body  202  preferably is cylindrical in configuration, but can be other shapes, such as rectangular. 
     An extension  204  is connected to a bottom  206  of the cylindrical body  202 . The extension  204  preferably has a cylindrical configuration and is screw threaded on an outer surface  205  of the extension  204 . The extension  204  has a diameter D 21  which is less than the diameter D 20  of the cylindrical body  202 , thus exposing a portion of the bottom  206  to form a ridge or edge  207 . The outer surface  208  of the cylindrical body  202  preferably is smooth. 
     A head or rim  210  is formed on top  212  of the cylindrical body  202 . The top  222  and bottom  211  of the head  210  preferably are flat and extend beyond the outer surface  208  of the cylindrical body  202  to form a ridge, edge, or ledge  214 . A bore  216  having an opening  218  in the head  210  extends into the cylindrical body  202 . The internal surface or wall  220  of the bore  216  preferably is threaded to receive a bolt. The head  210  can be any shape, such as circular or square. In  FIG. 1   b  the head  210  has a circular shape. 
     A ramp or tapered section  224  can be included to function as a transition from the width of the rim or head  210  to the width or diameter D 20  of the cylindrical body  202 . A smaller rim  226  can be located at the bottom  211  of the head  210 . The apparatus  200  preferably is constructed as one unitary piece and made of a metal, such as stainless steel. 
       FIG. 2   a  is a perspective view of a fastener, stud, or mounting apparatus  10  configured in accordance with another embodiment of the present invention.  FIG. 2   b  is a top view of the mounting apparatus  10 , and  FIG. 2   c  is a cross-sectional view of apparatus  10  taken along line  2   c - 2   c  of  FIG. 2   b . The apparatus  10  includes a body  12  having a first diameter D 1  and a length L 1 . The first diameter D 1  and the length L 1  are not any particular value, but first diameter D 1  typically is around half an inch, and the length L 1  typically is around one inch. The body  12  preferably is cylindrical in configuration, but can be other shapes, such as rectangular. 
     An extension  14  is connected to a bottom  13  of the cylindrical body  12 . The extension  14  preferably has a cylindrical configuration and is screw threaded on an outer surface  17  of the extension  14 . The extension  14  has a diameter D 2  which is less than the diameter D 1  of the body  12 , thus exposing a portion of the bottom  13  of the cylindrical body  12  to form a ridge or edge  11 . The outer surface  19  of the cylindrical body  12  preferably is smooth. 
     A head or rim  16  is formed on top  23  of the cylindrical body  12 . The top  25  and bottom  21  of the head  16  preferably are flat and extend beyond the outer surface  19  of the cylindrical body  12  to form a ridge, edge, or ledge  18 . A bore  20  having an opening  22  in the head  16  extends into the cylindrical body  12 . The internal surface or wall  24  of the bore  20  preferably is threaded to receive a bolt. The head  16  can be any shape, such as circular or square. In  FIG. 2   c , the head  16  has an octagon shape. 
     A ramp, slope or tapered section  26  can be included to function as a transition from the width of the head or rim  16  to the width or diameter D 1  of the cylindrical body  12 . The apparatus  10  preferably is constructed as one unitary piece and made of a metal, such as stainless steel. 
       FIG. 3   a  is a perspective view of a mounting apparatus  30  configured in accordance with a further embodiment of the present invention. The apparatus  30  is similar to apparatus  200 , except the head or rim  36  of the apparatus  30  has a square configuration instead of a round configuration like apparatus  200 .  FIG. 3   b  is a top view of the apparatus  30 , and  FIG. 2   c  is a cross-sectional view of the apparatus  30  shown in and taken along line  3   c - 3   c  of  FIG. 3   b . The apparatus  30  includes a cylindrical body  32  having a diameter D 3  and a length L 2 . The diameter D 3  and the length L 2  are not any particular value, but D 3  typically is around half an inch, and the length L 2  typically is around one inch. The body  32  preferably is cylindrical in configuration, but can be other shapes, such as rectangular. 
     An extension  34  is connected to a bottom  33  of the cylindrical body  32 . The extension  34  preferably has a cylindrical configuration and is screw threaded on an outer surface  35  of the extension  34 . The extension  34  has a diameter D 4  which is less than the diameter D 3  of the cylindrical body  32 , thus exposing a portion of the bottom  33  to form a ridge or edge  31 . The outer surface  37  of the cylindrical body  32  preferably is smooth. 
     A head or rim  36  is formed on top  39  of the cylindrical body  32 . The top  43  and bottom  41  of the head  36  preferably are flat and extend beyond the outer surface  37  of the cylindrical body  32  to form a ridge, edge, or ledge  47 . A bore  40  has an opening  42  in the head  36  extending into the cylindrical body  32 . The internal surface or wall  44  of the bore  40  preferably is threaded to receive a bolt. The head  36  can be any shape, such as circular or square. In  FIG. 3   c , the head  36  has a square shape. 
     A ramp or tapered section  46  can be included to function as a transition from the width of the rim  36  to the width or diameter D 3  of the cylindrical body  32 . The apparatus  30  preferably is constructed as one unitary piece and made of a metal, such as stainless steel. 
       FIG. 4   a  is a perspective view of a mounting apparatus  50  configured in accordance with a further embodiment of the present invention. The apparatus  50  is similar to apparatus  200 , except the head or rim  56  of the apparatus  50  has a hexagon configuration instead of a circular configuration like apparatus  200 .  FIG. 4   b  is a top view of the apparatus  50 , and  FIG. 4   c  is a cross-sectional view of the apparatus  50  shown in and taken along line  4   c - 4   c  of  FIG. 4   b . The apparatus  50  includes a cylindrical body  52  having a diameter D 5  and a length L 3 . The diameter D 5  and the length L 3  are not any particular value, but D 5  typically is around half an inch, and the length L 3  typically is around one inch. The body  52  preferably is cylindrical in configuration, but can be other shapes, such as rectangular. 
     An extension  54  is connected to a bottom  53  of the cylindrical body  52 . The extension  54  preferably has a cylindrical configuration and is screw threaded on an outer surface  55  of the extension  54 . The extension  54  has a diameter D 6  which is less than the diameter D 5  of the cylindrical body  52 , thus exposing a portion of the bottom  51  of the cylindrical body  52  to form a ridge or edge  61 . The surface  57  of the cylindrical body  52  preferably is smooth. 
     A head or rim  56  is formed on top  59  of the cylindrical body  52 . The top  66  and bottom  65  of the head  56  preferably are flat and extend beyond the outer surface  57  of the cylindrical body  52  to form a ridge, edge, or ledge  67 . A bore  60  having an opening  62  in the head  56  extends into the cylindrical body  52 . The internal surface or wall  64  of the bore  60  preferably is threaded to receive a bolt. The head  56  can be any shape, such as circular or square. In  FIG. 4   b , the head  56  has a hexagon shape. 
     A ramp or tapered section  63  can be included to function as a transition from the width of the rim  56  to the width or diameter D 5  of the cylindrical body  52 . The apparatus  50  preferably is constructed as one unitary piece and made of a metal, such as stainless steel. 
       FIG. 5   a  is a perspective view of a mounting apparatus  70  configured in accordance with another embodiment of the present invention. The apparatus  70  is similar to apparatus  200 , except the head or rim  76  of the apparatus  70  has a geared or toothed configuration, instead of a circle configuration like apparatus  200 .  FIG. 5   b  is a top view of the apparatus  70 , and  FIG. 5   c  is a cross-sectional view of the apparatus  70  shown in and taken along line  5   c - 5   c  of  FIG. 5   b . The apparatus  70  includes a cylindrical body  72  having a diameter D 7  and a length L 4 . The diameter D 7  and the length L 4  are not any particular value, but D 7  typically is around half an inch, and the length L 4  typically is around one inch. The body  72  preferably is cylindrical in configuration, but can be other shapes, such as rectangular. 
     An extension  74  is connected to a bottom  73  of the cylindrical body  72 . The extension  74  preferably has a cylindrical configuration and is screw threaded on an outer surface  75  of the extension  74 . The extension  74  has a diameter D 8  which is less than the diameter D 7  of the cylindrical body  72 , thus exposing a portion of the bottom  73  of the cylindrical body  72  to form a ridge or edge  81 . The outer surface  77  of the cylindrical body  72  preferably is smooth. 
     A head or rim  76  is formed on top  79  of the cylindrical body  72 . The top  86  and the bottom  85  of the head  76  preferably are flat and extend beyond the outer surface  77  of the cylindrical body  72  to form a ridge, edge, or ledge  71 . A bore  80  having an opening  82  in the head  76  extends into the cylindrical body  72 . The internal surface or wall  84  of the bore  80  preferably is threaded to receive a bolt. The head  76  can be any shape, such as circular or square. In  FIG. 5   b , the head  76  has a gear or toothed shape. 
     A ramp or tapered section  83  can be included to function as a transition from the width of the rim  76  to the width or diameter D 7  of the cylindrical body  72 . The apparatus  70  preferably is constructed as one unitary piece and made of a metal, such as stainless steel. 
       FIG. 6   a  is a perspective view of a mounting apparatus  90  configured in accordance with another embodiment of the present invention.  FIG. 6   b  is a top view of the apparatus  90 , and  FIG. 6   c  is a cross-sectional view of the apparatus  90  shown in and taken along line  6   c - 6   c  of  FIG. 6   b . The apparatus  90  includes a partially cylindrical body  92  having a diameter D 9 . The body  92  preferably is at least partially cylindrical in configuration. Flat portions  95  on the outer surface  104  of the body  92  provide locations for a wrench to grip and tighten or loosen the mounting apparatus  90 .  FIG. 6   d  is a side view of the apparatus  90  illustrating the flat portions  95  of the surface  104  of the body  92 . 
     An extension  94  is connected to a bottom  93  of the cylindrical body  92 . The extension  94  preferably has a cylindrical configuration and is screw threaded on an outer surface  97  of the extension  94 . The extension  94  has a diameter D 10  which is less than the diameter D 9  of the cylindrical body  92 , thus exposing a portion of the bottom  93  to form a ridge or edge  91 . 
     A head or rim  96  is formed on top  99  of the cylindrical body  92 . The top  102  and bottom  105  of the head  96  preferably are flat and extend beyond the outer surface  104  of the cylindrical body  92  to form a ridge, edge, or ledge. A bore  100  having an opening  110  in the head  96  extends into the cylindrical body  92 . The internal surface or wall  101  of the bore  100  preferably is threaded to receive a bolt. The head  96  can be any shape, such as circular or square. In  FIG. 6   b , the head  96  has a circular shape. The apparatus  90  preferably is constructed as one unitary piece and made of a metal, such as stainless steel. 
     The outer surface  104  of the cylindrical body  92 , unlike apparatus  200 , is screw threaded. The threading on the outer surface  104  of the cylindrical body  92  enables a nut  98  to be screwed onto the outer surface  104  of the cylindrical body  92  and tightened up against the flat bottom surface  105  or a washer  108  against the head  96 . This design enables the apparatus  90  to be manually secured within a mounting hole sized for the cylindrical body  92 . The washer  98  preferably is constructed of rubber or metal, and can be flat or have a circular cross-section as illustrated in  FIG. 6   c.    
       FIG. 7   a  is a perspective view of a mounting apparatus  120  configured in accordance with a further embodiment of the present invention. The apparatus  120  is similar to apparatus  200 , except the head or rim  132  does not have bore  216 .  FIG. 7   b  is a top view of the apparatus  120 , and  FIG. 7   c  is a cross-sectional view of the apparatus  120  shown in and taken along line  7   c - 7   c  of  FIG. 7   b . The apparatus  120  includes a cylindrical body  124  having a diameter D 22 . 
     An extension  126  is connected to a bottom  127  of the cylindrical body  124 . The extension  126  preferably has a cylindrical configuration and is screw threaded on an outer surface  129  of the extension  126 . The extension  126  has a diameter D 23  which is less than the diameter D 22  of the cylindrical body  124 , thus exposing a portion of the bottom  127  of the cylindrical body  124  to form a ridge or edge. The surface  130  of the cylindrical body  124  preferably is smooth. 
     A head or rim  132  is formed on a top  134  of the cylindrical body  124 . The top  136  and bottom  138  of the head  132  preferably are flat and extend beyond the outer surface  130  of the cylindrical body  124  to form a ridge, edge, or ledge. The head  132  can be any shape, such as circular or square. In  FIG. 7   b , the head  132  has a circular shape. 
     A ramp, slope, or tapered section  131  can be included to function as a transition from the width of the head or rim  132  to the width or diameter D 22  of the cylindrical body  124 . The apparatus  120  preferably is constructed as one unitary piece and made of a metal, such as stainless steel. A smaller rim  139  can be included at the bottom  138  of the head  132 . The apparatus  120  is designed to be welded within a rear wall mounting hole of a watertight enclosure like  200 , but not screwed into the real wall of a watertight enclosure. Extension  126  is for mounting a back panel for electronics to the rear wall inside an enclosure. 
       FIG. 8   a  is a front view of a watertight enclosure  140  to be mounted using a mounting apparatus configured in accordance with the present invention. Illustrated are a front door  142  having locking knobs  144  and rear mounting brackets  146 .  FIG. 8   b  is a cross-sectional view of the enclosure  140  and mounting brackets  146  shown in and taken along line  8   b - 8   b  of  FIG. 8   a . Shown in  FIG. 8   b  are the mounting brackets  146 , the front door  142 , a rear wall  148  of the enclosure  140 , and a rear panel  150  connected to the rear wall  148  for mounting electrical components. 
       FIG. 8   c  is an enlarged view of the circled portion “ 8   c ” shown in  FIG. 8   b . The enclosure  140  is shown and the mounting bracket  146  having a mounting aperture  149  in the bracket  146 . The rear panel  150  is shown mounted to the back wall or rear wall  148  using the mounting apparatus  200  shown in  FIGS. 1   a - 1   c . The bracket  146  is mounted to the rear wall  148  using a bolt  152  screwed into the bore  216  of the fastener  200 . The fastener  200  is mounted to the rear wall  148  of the enclosure  140  via a mounting hole  153  in the rear wall  148 . A washer  155 , preferably metal, is located between the head of the bolt  152  and the bracket  146 . The rear panel  150  is mounted to the fastener  200  using a washer  156  and a machine or hex nut  154  located on the extension  204  of the fastener  200 . 
       FIG. 9   a  is a rear view of a watertight enclosure  140  to be mounted using a mounting apparatus configured in accordance with the present invention. Illustrated are a rear wall  148  and rear mounting brackets  160 .  FIG. 9   b  is a cross-sectional view of the enclosure  140  and mounting brackets  160  shown in and taken along line  9   b - 9   b  of FIG.  9   a . Shown in  FIG. 9   b  are the mounting brackets  160 , a front door  142 , the rear wall  148  of the enclosure  140 , and a rear panel  150  connected to the rear wall  148  for mounting electrical components. 
       FIG. 9   c  is an enlarged view of the circled portion “ 9   c ” shown in  FIG. 9   b , wherein the components are shown in an exploded view. The enclosure  140  is shown and the mounting bracket  160  having mounting apertures  161  and  162  in the bracket  160 . The rear panel  150  is shown to be mounted to the rear wall  148  using the mounting apparatus  200  shown in  FIGS. 1   a - 1   c . The bracket  160  is mounted to the rear wall  148  using a bolt  152  screwed into the bore  216  of the fastener  200 . The fastener  200  is to be mounted to the rear wall  148  of the enclosure  140  via a mounting hole  153 . A washer  155 , preferably metal, is to be located between the head of the bolt  152  and the bracket  160 . The rear panel  150  is to be mounted to the fastener  200  using a washer  156  and a machine or hex nut  154  located on the extension  204  of the fastener  200 . 
       FIG. 10   a  is a front view of a watertight enclosure  140  to be mounted using a mounting apparatus configured in accordance with the present invention. Illustrated are a front door  142  having locking knobs  144  and rear mounting brackets  170 .  FIG. 10   b  is a cross-sectional view of the enclosure  140  and mounting brackets  170  shown in and taken along line  10   b - 10   b  of  FIG. 10   a . Shown in  FIG. 10   b  are the mounting brackets  170 , the front door  142 , a rear wall  148  of the enclosure  140 , and a rear panel  150  connected to the rear wall  148  for mounting electrical components. 
       FIG. 10   c  is an enlarged view of the circled portion “ 10   c ” shown in  FIG. 10   b . The enclosure  140  is shown and the mounting bracket  170  having a mounting aperture  171  in the bracket  170  for connecting the bracket  170  to a vertical wall. The rear panel  150  is shown mounted to the rear wall  148  of the enclosure  140  using the mounting apparatus  200  shown in  FIGS. 1   a - 1   c.    
     The bracket  170  has a first arm  173  and a second arm  174  connected by a bar  172 . A first aperture  171  is for mounting the bracket to a vertical wall, and the second aperture  175  is for mounting the bracket  170  to a rear wall  148  of the enclosure  140 . The bracket  170  is mounted to the rear wall  148  of the enclosure  140  using a bolt  152  screwed into the bore  216  of the fastener  200 . The fastener  200  is mounted to the rear wall  148  of the enclosure  140  via the aperture  175  in the bracket  170  and an aperture  179  in the rear wall  148  of the enclosure. A washer  155 , preferably metal, is located between the head of the bolt  152  and the second arm  174  of the bracket  170 . The rear panel  150  is mounted to the fastener  200  using a washer  156  located against a machine or hex nut  154  located on the extension  204  of the fastener  200  which passed through an aperture  177  in the rear panel  150 . 
     While specific embodiments have been shown and described to point out fundamental and novel features of the invention as applied to the preferred embodiments, it will be understood that various omissions and substitutions and changes of the form and details of the invention illustrated and in the operation may be done by those skilled in the art, without departing from the spirit of the invention.