Patent Publication Number: US-6217191-B1

Title: Multiple lamp socket device

Description:
FIELD OF THE INVENTION 
     The invention relates to lamp socket devices in Christmas lighting strings. 
     BACKGROUND OF THE INVENTION 
     Conventional lamp socket devices in Christmas lighting strings have a lamp bulb, lamp base, lamp holder and contact copper sheet connected to the electrical wires. In general different specifications of lamp bulb are not used. The lamp bulb is only used in certain conditions or situations. Further, a lighting string used in series or parallel does not have any limit or control. Only words in a label or a written explanation warning is provided on such strings as sold. Thus, users may neglect to heed such explanations. This can present the danger of over heating, something catching fire, etc. due to the improper use. Therefore, a fire disaster may occur, potentially causing great loss in life and property. 
     The use a bulbs with a screw base in the lamp socket device is based on one type, such as with 1OW, 2OW . . . 20OW bulbs used in households appliances. The same to use E  26  base and holder. It should be limited to use in various situations. However, only explanation or warning is done. It has not any effective method or design to protect the users to assembly or replace the device without error whereby to guarantee the safety. 
     Several decades, a number of lighting strings in series or parallel have different specifications of lamp bulbs (1), which is to use the same specification of lamp base (2) or lamp holder (3). This only relies on the control of manufacture and a written explanation or warning in order to prevent the users from improper use. Especially, the consumers are not familiar and cannot recognize products and distinguish the specifications, i.e. it is difficult to apply common sense to them. Thus, a disaster can result due to neglect. The conventional products use different lamp bulbs (1), use the same specification of lamp base (2) or lamp holder (3), such as in the prior arts of U.S. Pat. Nos. 3,286,008; 4,631,650; 4,679,126; 4,779,177; 4,807,098; 4,970,632; 4,999,751; 5,001,615; 5,193,255 and 5,418,698. Though the combination of lamp bulb, lamp base or lamp holder has a limit in vertical or horizontal direction, the purpose is, under the combination, to make the conductor wire of bulb only able to contact with the electric wire or contact the copper sheet so as to complete the electrical circuit. 
     SUMMARY AND OBJECTS OF THE INVENTION 
     The primary object of the present invention is to avoid the possibility of neglect in manufacture and the error in use. The combination between the lamp bulb, lamp base and lamp holder has acceptance, combinable, selective, directional and monopolization characteristics between the fixed lamp bulb, lamp base and lamp holder. The device with another unfixed lamp bulb, lamp base and lamp holder has non-acceptance, non-combinable or exclusive aspects. Such as a device is only able to use a low bulb, it is fixed to being arranged in the first kind of lamp base or lamp holder, and a bulb other than a low one is completely unable to be used in the first kind of lamp base or lamp holder. Further, with the kind of series lighting string using a bulb with 12 Volts in ten bulbs, the Voltage is fixed in 120 V and only this A-type lamp base and lamp holder can be used and it is not possible to use other types of lamp base and lamp holder at all. The other specifications of bulbs in 6 V, 3.5 V, 2.5 V are not combinable with the A-type of lamp base and lamp holder. Further, the bulbs in 6 V, 3.5 V, 2.5 V are only combinable in B-type, C-type, D-types of lamp base and lamp holder respectively. 
     In order to obtain acceptance, combinable, selective, directional and monopolization characteristics between the fixed lamp bulb, lamp base and lamp holder and the non-acceptance, non-combinable or exclusive aspects as well, many methods can be used and the structures are various. The methods and structures can be used in a number of lamp bulbs, lamp bases and lamp holders. It is unable to list them one by one. However, five groups of lamp bulb, lamp base and lamp holder of push-in type are used as the detailed description thereafter other objects and features will become apparent when the description of preferred embodiments is taken in conjunction with the annexed drawings 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     In the drawings: 
     FIG. 1 is a perspective view of the first embodiment of the lamp socket device of the present invention showing the structure combination ofthe assemblies, and FIGS. 1A and 1B are perspective views showing the lamp holder and its cross-section. FIGS. 1C and 1D are perspective views showing the lamp base and its cross-section. FIG. 1E is the other perspective view with the 90 degree direction. FIGS. 1F and 1G are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 2 is a perspective of the second embodiment of the lamp socket device of the present invention the structure combination of the assemblies, and FIGS. 2A and 2B are perspective views showing the lamp holder and its cross-section. FIG. 2C is another perspective view with the 90 degree direction. FIGS. 2D and 2E are perspective views showing the lamp base and its cross-section. FIGS. 2F and 2G are perspective views of the lamp holder and its cross section shown after the combination. 
     FIG. 3 is a perspective of the third embodiment ofthe lamp socket device ofthe present invention showing the structure combination of the assemblies, and FIGS. 3A and 3B are perspective views showing the lamp holder and its cross-section. FIGS. 3C and 3D are perspective views showing the lamp base and its cross-section. FIGS. 3E and 3F are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 4 is a perspective of the fourth embodiment of the lamp socket device of the present invention showing the structure combination of the assemblies, and FIGS. 4A and 4B are perspective views showing the lamp holder and its cross-section. FIGS. 4C and 4D are perspective views showing the lamp base and its cross-section. FIGS. 4E and 4F are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 5 is a perspective view of a further embodiment of the lamp socket device of the present invention showing the structure combination ofthe assemblies, and FIGS. 5A and 5B are perspective views showing the lamp holder and its cross-section. FIGS. 5C and 5D are perspective views showing the lamp base and its cross-section. FIG. 5E is another perspective view with the 90 degree direction. FIGS. 5F and 5G are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 6 is a perspective of a further embodiment ofthe lamp socket device ofthe present invention showing the structure combination of the assemblies, and FIGS. 6A and 6B are perspective views showing the lamp holder and its cross-section. FIG. 6C is the other perspective view with the 90 degree direction. FIGS. 6D and 6E are perspective views showing the lamp base and its cross-section. FIGS. 6F and 6G are perspective views of the lamp holder and its cross section shown after the combination. 
     FIG. 7 is a perspective of a further embodiment of the lamp socket device of the present invention showing the structure combination of the assemblies, and FIGS. 7A and 7B are perspective views showing the lamp holder and its cross-section. FIGS. 7C and 7D are perspective views showing the lamp base and its cross-section. FIGS. 7F and 7G are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 8 is a perspective of a further embodiment ofthe lamp socket device of the present invention showing the structure combination of the assemblies, and FIGS. 8A and 8B are perspective views showing the lamp holder and its cross-section. FIGS. 8C and 8D are perspective views showing the lamp base and its cross-section. FIGS. 8E and 8F are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 9 is a perspective view of a further embodiment of the lamp socket device of the present invention showing the structure combination ofthe assemblies, and FIGS. 9A and 9B are perspective views showing the holder and its cross-section. FIGS. 9C and 9D are perspective views showing the lamp base with lamp bulb and its cross-section. FIG. 9E is a perspective view of the lamp holder shown after the combination. 
     FIG. 10 is a perspective view of a further embodiment of the lamp socket device of the present invention showing the structure combination of the assemblies, and FIGS. 10A and 10B are perspective views showing the lamp holder and its cross-section. FIG. 10C is another perspective view with the 90 degree direction. FIGS. 10D and 10E are perspective views showing the lamp base and its cross-section. FIGS. 10F is a perspective view ofthe lamp holder shown after the combination. 
     FIG. 11 is a perspective view of a further embodiment of the lamp socket device of the present invention showing the structure combination of the assemblies, and FIGS. 11A and 11B are perspective views showing the lamp holder and its cross-section. FIGS. 11C and 11D are perspective views showing the lamp base with lamp bulb and its cross-section. FIG. 11E is a perspective view of the lamp holder shown after the combination. 
     FIG. 12 is a perspective view of a further embodiment of the lamp socket device of the present invention showing structure combination of the assemblies, and FIGS. 12A and 12B are perspective views showing the lamp holder and its cross-section. FIGS. 12C and 12D are perspective views showing the lamp base with lamp bulb and its cross-section. FIG. 12E is a perspective view of the lamp holder shown after the combination. 
     FIG. 13 is a perspective of a further embodiment of the lamp socket device of the present invention showing the structure combination of the assemblies, and FIGS. 13A and 13B are perspective views showing the lamp holder and its cross-section. FIGS. 13C and 13D are perspective views showing the lamp base and its cross-section. FIGS. 13E and 13F are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 14 is a perspective of a further embodiment ofthe lamp socket device ofthe present invention showing the structure combination of the assemblies, and FIGS. 14A and 14B are perspective views showing lamp holder and its cross-section. FIGS. 14C and 14D are perspective views showing the lamp base and its cross-section. FIGS. 14E and 14F are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 15 is a perspective of a further embodiment of the lamp socket device of the present invention showing the structure combination of the assemblies, and FIGS. 15A and 15B are perspective views showing the lamp holder and its cross-section. FIGS. 15C and 15D are perspective views showing the lamp base and its cross-section. FIGS. 15E and 15F are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 16 is a perspective of a further embodiment of the lamp socket device of the present invention showing the structure combination of the assemblies, and FIGS. 16A and 16B are perspective views showing the lamp holder and its cross-section. FIGS. 16C and 16D are perspective views showing the lamp base and its cross-section. FIGS. 16E and 16F are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 17 is a perspective view of a further embodiment of the lamp socket device of the present invention showing the structure combination of the assemblies, and FIGS. 17A and 17B are perspective views showing the lamp holder and its cross-section. FIGS. 17C and 17D are perspective views showing the lamp base and its cross-section. FIG. 17E is the other perspective view with the 90 degree direction. FIGS. 17F and 17G are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 18 is a perspective view of a further embodiment of the lamp socket device of the present invention showing the structure combination of the assemblies, and FIGS. 18A and 18B are perspective views showing lamp holder and its cross-section. FIGS. 18C and 18D are perspective views showing the lamp base and its cross-section. FIG. 18E is the other perspective view with the 90 degree direction. FIGS. 18F and 18G are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 19 is a perspective of a further embodiment of the lamp socket device of the present invention showing the structure combination of the assemblies, and FIGS. 19A and 19B are perspective views showing the lamp holder and its cross-section. FIGS. 19C and 19D are perspective views showing the lamp base and its cross-section. FIGS. 19E and 19F are perspective views of the lamp holder and its cross-section shown after the combination. 
     FIG. 20 is a perspective of a further embodiment of the lamp socket device of the present invention showing the structure combination of the assemblies, and FIGS. 20A and 20B are perspective views showing the lamp holder and its cross-section. FIGS. 20C and 20D are perspective views showing the lamp base and its cross-section. FIGS. 20E and 20F are perspective views of the lamp holder and its cross-section shown after the combination. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     The illustration of the lamp socket devices of the present invention shows lamp bulbs  1 , lamp bases  21 ,  22 ,  23 ,  24 ,  25 , lamp holders  31 ,  32 ,  33 ,  34 ,  35 , contact copper sheets  4  and electric wires  5 . The lamp bulb  1  has tungsten filament sealed in the vacuum part and the conductor wire  11  extended out of the bulb, the lamp base having a neck  28  and base  29 , part of lamp bulb  1  passing through the hole of the neck  28  in the lamp base, its conductor wire  11  passing through the base  29  of the lamp base and bent along with the side wall of the base  29 , contacting with contact copper sheet  4  connected to the electrical wires whereby to form an electrical circuit. The lamp base has a rectangular base  29  in the cross-section part, the conductor wire  11  of the lamp bulb  1  along with the short edge of the rectangular base  29 ; the relative distance of the two contact copper sheets  4  being larger than their width whereby to form the cross section part becoming rectangular hole, closely adjoin the rectangular base of lamp base, only the oriented direction limit ofthe combination of long edge with long edge, and short edge with short edge in order to confirm the conductor wires II contacted to the contact copper sheet  4  so as to complete a electrical circuit. 
     According to the lamp socket device in FIGS. 1,  2 ,  3  and  4 , an upper rim of neck  28  of the lamp base  21  has a annular protuberance  201 , on the protuberance  201 , four posts  210 ,  211 ,  212 ,  213 ,  214 ,  215  and  216 ,  217 ,  218 ,  219  respectively extended toward the direction of the neck  28 ; the opening rim of be connected portion between the lamp holder  31  with lamp bulb  1  and lamp base  21  having annular protuberance  301 , four openings or grooves  310 ,  311 ,  312 ,  313 ,  314 ,  315  and  316 ,  317 ,  318 ,  319  on the protuberance  301 . In FIG. 1, one post  210  and one opening or groove  310  are to be set up in the same side. When combining these, the base  29  and neck  28  of the lamp base  21  are inserted into the opening of lamp holder, the post  210  simultaneously inserted into the opening or groove  310  and fixed in the right position. In FIG. 2, two posts  211 ,  212  and two openings or grooves  311 , 312  are on the base of the post  210  and opening or groove  310  in FIG. 1 used as a reference to set up 90 degree respectively, when combining, the two posts  211 ,  212  being simultaneously inserted into two openings or grooves  311 , 312  and fixed in the right position. In FIG. 3, three posts  213 ,  214 , 215  and three openings or grooves  313 ,  314 ,  315  are on the base of the post  210  and opening or groove  310  in FIG. 1 used as a reference and according to clockwise or counterclockwise direction to set up 30, 150 and 270 degree respectively, when combining, the three posts  213 ,  214 ,  215  being simultaneously inserted into three openings or grooves  313 ,  314 ,  315  and fixed in the right position. In FIG. 4, four posts  216 ,  217 ,  218 ,  219  and four openings or grooves  316 ,  317 ,  318 ,  319  are on the base of the post  210  and opening or groove  310  in FIG. 1 used as a reference and according to clockwise or counterclockwise direction to set up 45, 135, 225 and 315 degree respectively, when combining, the four posts  216 ,  217 ,  218 ,  219  being simultaneously inserted into three openings or grooves  316 ,  317 ,  318 ,  319  and fixed in the right position. The elements, which are set up for combination, can be inserted into the right position, unable to be inserted into the non-combinable lamp base and lamp holder at the right position. Further, the numbers of the posts and opening or groove can be varied and the fixed angles also can be varied so as to form more combining configurations. 
     According to the lamp socket device in FIGS. 5,  6 / 7  and  8 , at the waist of the lamp base  22  having a annular protuberance  302 , on the protuberance  302 , four openings or grooves  320 ,  321 ,  322 ,  323 ,  324 ,  325  and  326 ,  327 ,  328 ,  329  respectively; the upper rim of the neck  28  of lamp base  22  having an annular protuberance  202 , four posts  220 ,  221 ,  222 ,  223 ,  224 ,  225  and  226 ,  227 ,  228 ,  229  respectively extended toward the direction of the neck  28  on the protuberance  202 ; the length of post being larger than that ofthe upper rim of the protuberance of lamp holder. In FIG. 5, one post  220  and one opening or groove  330  are to be set up in the same side. When combining, the base  29  and neck  28  of the lamp base  22  are inserted into the opening of lamp holder, the post  220  simultaneously inserted into the opening or groove  320  and fixed in the right position. In FIG. 6, two posts  221 ,  222  and two openings or grooves  321 ,  322  are on the base of the post  220 . The opening or groove  320  in FIG. 5 is used as a reference to set up 90 degree respectively, when combining, the two posts  221 ,  222  being simultaneously inserted into two openings or grooves  321 ,  322  and fixed in the right position. In FIG. 7, three posts  223 ,  224 ,  225  and three openings or grooves  323 ,  324 ,  325  are on the base ofthe post  220  and opening or groove  320  in FIG. 5 is used as a reference and according to clockwise or counterclockwise direction to set up 30, 150 and 270 degree respectively, when combining, the three posts  223 ,  224 ,  225  being simultaneously inserted into three openings or grooves  323 ,  324 ,  325  and fixed in the right position. In FIG. 8, four posts  226 ,  227 ,  228 ,  229  and four openings or grooves  326 ,  327 ,  328 ,  329  are on the base of the post  220  and opening or groove  320  in FIG. 5 is used as a reference and according to clockwise or counterclockwise direction to set up 45, 135, 225 and 315 degree respectively, when combining, the four posts  226 ,  227 ,  228 ,  229  being simultaneously inserted into three openings or grooves  326 ,  327 ,  328 ,  329  and fixed in the right position. According to the lamp socket device in FIGS. 9,  10 ,  11  and  12 , an upper rim of neck  28  of the lamp base  23  has a annular protuberance  203 , on the protuberance  203 , four posts  230 ,  231 ,  232 ,  233 ,  234 ,  235  and  236 ,  237 ,  238 ,  239  respectively extended toward the direction of the neck  28 . The opening rim of the connected portion between the lamp holder  33  with lamp bulb  1  and lamp base  23  has an upper part  303 , four openings or grooves  330 ,  331 ,  332 ,  333 ,  334 ,  335  and  336 ,  337 ,  338 ,  339  on the upper part  303 . In FIG. 9, one protuberance part  230  and one opening or groove  330  are to be set up in the same side. When combining, the base  29  and neck  28  of the lamp base  23  are inserted into the opening of lamp holder, the protuberance part  230  simultaneously inserted into the opening or groove  330  and fixed in the right position. In FIG. 10, two protuberance parts  231 ,  232  and two openings or grooves  331 ,  332  are on the base of the protuberance part  230 . Opening or groove  330  in FIG. 9 is used as a reference set up 90 degrees respectively. When combining, the two protuberance parts  231 ,  232  are simultaneously inserted into two openings or grooves  331 ,  332  and fixed in the right position. In FIG. 11, three protuberance parts  233 ,  234 ,  235  and three openings or grooves  333 ,  334 ,  335  are on the base of the protuberance part  230  and opening or groove  330  in FIG. 9 is used as a reference and according to clockwise or counterclockwise direction to set up 30, 150 and 270 degree respectively, when combining, the three protuberance parts  233 ,  234 ,  235  being simultaneously inserted into three openings or grooves  333 ,  334 ,  335  and fixed in the right position. In FIG. 12, four protuberance parts  236 ,  237 ,  238 ,  239  and four openings or grooves  336 ,  337 ,  338 ,  339  are on the base of the protuberance part  230  and opening or groove  330  in FIG. 9 is used as a reference and according to clockwise or counterclockwise direction to set up 45, 135, 225 and 315 degree respectively, when combining, the four posts  236 ,  237 ,  238 ,  239  being simultaneously inserted into three openings or grooves  336 ,  337 ,  338 ,  339  and fixed in the right position. 
     According to the lamp socket device in FIGS. 13,  14 ,  15  and  16 , an upper rim of neck  28  of the lamp base  24  has an annular protuberance  204 , on the protuberance  204 , four openings or grooves  240 ,  241 ,  242 ,  243 ,  244 ,  245  and  246 ,  247 ,  248 ,  249  respectively extended toward the direction of the neck  28 ; the opening rim of the connected portion of the lamp holder  34  with lamp bulb  1  and lamp base  24  having four protuberances  340 ,  341 ,  342 ,  343 ,  344 ,  345  and  346 ,  347 ,  348 ,  349 . In FIG. 13, one opening or groove  240  and one protuberance part  340  are to be set up in the same side. When combining, the base  29  and neck  28  of the lamp base  24  are inserted into the opening of lamp holder, the protuberance part  340  is simultaneously inserted into the opening or groove  240  and is fixed in the right position. In FIG. 14, two openings or grooves  241 , 324  and two protuberance parts  341 ,  342  are on the base of the opening or groove  240  and protuberance part  340  in FIG. 13 is used as a reference to set up 90 degree respectively, when combining, the two protuberance parts  341 ,  342  being simultaneously inserted into two openings or grooves  241 ,  242  and fixed in the right position. In FIG. 15, three openings or grooves  243 ,  244 ,  245  and three protuberance parts  343 ,  344 ,  345  are on the base of the opening or groove  240  and protuberance part  340  in FIG. 13 is used as a reference and according to clockwise or counterclockwise direction to set up 30, 150 and 270 degree respectively, when combining, the three protuberance parts  343 ,  344 ,  345  being simultaneously inserted into three openings or grooves  243 ,  244 ,  245  and fixed in the right position. In FIG. 16, four openings or grooves  246 ,  247 ,  248 ,  249  and four protuberance parts  246 ,  247 ,  248 ,  249  are on the base of the opening or groove  240 . The protuberance part  340  in FIG. 13 is used as a reference and according to a clockwise or counterclockwise direction to set up 45, 135, 225 and 315 degree respectively, when combining, the four protuberance parts  346 ,  347 ,  348 ,  349  being simultaneously inserted into three openings or grooves  246 ,  247 ,  248 ,  249  and fixed in the right position. 
     The lamp socket devices shown in FIGS. 17,  18 ,  19  and  20 , are similar to FIGS. 1,  2 ,  3  and  4 , however, the sizes of the post, opening or groove are different. In FIG. 17, the width of the post  250  and one opening or groove  350  is most largest. In FIG. 18, the width of the two posts  251 ,  252  and two openings or grooves  351 ,  352  is smaller than those of in FIG.  17 . In FIG. 19, the width of the three posts  253 ,  254 ,  255  and three openings or grooves  353 ,  354 ,  355  is smaller than those of in FIG.  18 . In FIG. 20, the width of the four posts  256 ,  257 ,  258 ,  259  and four openings or grooves  356 ,  357 ,  358 ,  359  is smaller than those of in FIG.  19 . Thus, the number of posts and openings or grooves in one is the largest in size; the size of two posts and openings or grooves in two is smaller than those in one; the size of three posts and openings or grooves is also smaller than in two; and the size of four posts and openings or grooves is the smallest. Therefore, a lamp base or lamp holder having one post, opening or groove is unable to be inserted into a lamp holder or lamp base having two or more than two openings or grooves or posts; a lamp base or lamp holder having two posts, opening or grooves is unable to be inserted into a lamp holder or lamp base having three or more than three openings or grooves or posts; and a lamp base or lamp holder having three posts, opening or grooves is unable to be inserted into a lamp holder or lamp base having four openings or grooves or posts. Such will be increased more assembling configurations. 
     The above embodiments are only for the illustration and not to limit to the above mentioned structures of combinations. The main purpose is to set up the lamp bulb, lamp base and lamp holder having acceptance, selectively combinable, aspects with directional aspects between the fixed lamp bulb, lamp base and lamp holder whereas the other unfixed lamp bulb, lamp base and lamp holders of a similar but different type have non-acceptance, non-combinable or exclusive aspects. The Tables 1, 2 and 3 below are used to provide a more detailed explanation. 
     
       
         
           
               
               
               
             
               
                   
                 TABLE 1 
               
             
            
               
                   
                   
               
               
                   
                 Post or Protuberance 
                   
               
               
                   
                 Opening or Groove 
               
            
           
           
               
               
               
               
            
               
                   
                 Model Nos. 
                 number 
                 Spaced Angle 
               
               
                   
                   
               
            
           
           
               
               
               
               
               
            
               
                   
                 Lamp base 
                 B - X - 1 
                 1 
                 360 
               
               
                   
                 or 
                 H - X - 1 
               
               
                   
                 Lamp Bulb 
                 B - X - 2 
                 2 
                 180 
               
               
                   
                 B - X 
                 H - X - 2 
               
               
                   
                 Lamp Holder 
                 B - X - 3 
                 3 
                 120 
               
               
                   
                 H - X 
                 H - X - 3 
               
               
                   
                   
                 B - X - 4 
                 4 
                 90 
               
               
                   
                   
                 H - X - 4 
               
               
                   
                   
                 B - X - 5 
                 5 
                 72 
               
               
                   
                   
                 H - X - 5 
               
               
                   
                   
                 B - X - 6 
                 6 
                 60 
               
               
                   
                   
                 H - X - 6 
               
               
                   
                   
                 . . . 
                 . . . 
                 . . . 
               
               
                   
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 2 
               
               
                   
               
               
                 EXPLANATION: 
               
               
                   
               
             
            
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
            
           
         
       
     
     
       
         
           
               
             
               
                 TABLE 3 
               
               
                   
               
             
            
               
                 
                   
                     
                     
                         
                         
                     
                   
                 
               
               
                   
               
               
                 B-X = The models of Lamp Base or Lamp Bulb.  
               
               
                 H-X = The models of Lamp Holder.  
               
               
                 Y = The numbers of post or protuberance, opening or groove, such as: 1, 2, 3, 4, ...