Patent Publication Number: US-6709031-B1

Title: Window and sliding glass door having push button locking mechanism

Description:
FIELD OF INVENTION 
     The present invention relates to an improved window or sliding glass door having an integral push button locking mechanism. More particularly, the locking mechanism includes a rocker lever arm for inserting or retracting a locking pin in order to allow the two windows or two glass sliding doors to be locked or unlocked accordingly. 
     BACKGROUND OF THE INVENTION 
     Sliding doors and windows are often locked by complex locking mechanisms that comprise many internal moving parts and thus are subject to disrepair. Also, the frame of the windows or doors are not of a sufficient size to receive large and secure locking mechanisms. Therefore, there is a need for a mechanism to lock the windows or lock the sliding glass doors that is secure, ergonomically efficient, simple to use, and requires only a minimal number of internal moving parts to withstand everyday wear and tear. 
     DESCRIPTION OF THE PRIOR ART 
     Sliding door locks, plug-in locks, slidable door safety locks, window locking devices sliding closure locking devices, sliding door push locks and sliding door latching devices having various designs, configurations, structures and materials of construction have been disclosed in the prior art. For example, U.S. Pat. No. 3,863,470 to IMER discloses a sliding door lock for use with a pair of overlapping glass doors or windows which are slidably mounted in a pair of adjacent upper and lower tracks. The sliding door lock includes a control knob for inserting and retracting one or more locking pins. The control knob uses a cam element for inserting and retracting the one or more locking pins. This prior art patent does not teach or disclose the particular structure of a sliding door push button locking mechanism that uses a rocker lever arm for inserting or retracting a locking pin in order to allow the two windows or two glass sliding doors to be opened or closed. 
     U.S. Pat. Nos. 3,397,000 to NAKANISHI and 5,464,261 to ALKHOURY both disclose a sliding door lock for use with a pair of overlapping glass doors which are slidably mounted in a pair of adjacent upper and lower tracks. Each of the above sliding door locks include a control knob mounted on a spring activated locking pin. The control knob and locking pin are not spaced-apart in their respective structures as compared to the structure of the present invention. These prior art patents do not teach or disclose the particular structure of a sliding door push button locking mechanism that uses a rocker lever arm for inserting or retracting a locking pin in order to allow the two windows or two glass sliding doors to be opened or closed. 
     None of the prior art patents disclose or teach a sliding door locking mechanism or window locking mechanism using a control knob (lock releasing pin) and locking pin in cooperation with a rocker lever arm allowing the locking pin to open or close the two windows or two glass sliding doors. 
     Accordingly, it is an object of the present invention to provide a window or sliding door locking mechanism having an integrated push button locking mechanism that requires only a minimal number of internal moving component parts. 
     Another object of the present invention is to provide an integrated push button locking mechanism that includes a control knob or a lock releasing pin, a locking pin and a rocker lever arm, wherein the rocker lever arm is used for inserting or retracting the locking pin from one of the glass sliding door stiles in order to allow the two glass sliding doors to be opened or closed accordingly. 
     Another object of the present invention is to provide a sliding door locking mechanism or window locking mechanism that is capable of withstanding everyday wear and tear. 
     Another object of the present invention is to provide a sliding door locking mechanism or window locking mechanism having an integrated push button locking mechanism that is secure, safe, efficient, durable and easy to use. 
     Another object of the present invention is to provide a sliding door locking mechanism or a window locking mechanism that is easily installed without the necessity for extensive modifications of the existing windows or sliding glass doors. 
     Another object of the present invention is to provide for a sliding door locking mechanism that prevents the panels of the glass siding doors from sliding horizontally relative to each other in their respective tracks. 
     Another object of the present invention is to provide a sliding door locking mechanism that is aesthetically pleasing and unobtrusive when mounted on the vertical stile of one of the sliding glass doors. 
     Another object of the present invention is to provide a sliding door locking mechanism or a window locking mechanism that is rapidly locked and unlocked to a closed or opened position. 
     Another object of the present invention is to provide a sliding door locking mechanism that is permanently mounted on the vertical stile using a minimum number of tools. 
     A further object of the present invention is to provide a sliding door locking mechanism or a window locking mechanism which is capable of locking a wide variety of closures such as sliding windows, standard house windows, display case doors, sliding panel doors, sliding glass doors and the like. 
     A still further object of the present invention is to provide a sliding door locking mechanism or a window locking mechanism that can be mass produced in an automated and economical manner and is readily affordable by the consumer. 
     SUMMARY OF THE PRESENT INVENTION 
     In accordance with the present invention, there is provided a window or sliding glass door having a push button locking mechanism. The window or sliding door locking mechanism includes a cover having an internal compartment for receiving a push button locking assembly therein. The push button locking assembly includes a rocker lever arm sub-assembly, a locking pin, a releasing pin and a push button housing all connected together. The rocker lever arm sub-assembly includes a lever arm having a tensioning spring mounted on each outer end. The rocker lever arm sub-assembly is movable between a locking position and an unlocking position for activating the releasing pin to withdraw the locking pin from the push button housing in order to allow a pair of windows or sliding doors to be unlocked, and for activating the locking pin for insertion of the locking pin in the push button housing in order to lock a pair of windows or sliding doors in a locked position. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     Further objects, features, and advantages of the present invention will become apparent upon the consideration of the following detailed description of the presently-preferred embodiment when taken in conjunction with the accompanying drawings, wherein: 
     FIG. 1 is a front perspective view of a window or a sliding glass door locking mechanism of the preferred embodiment of the present invention showing the locking mechanism in an assembled configuration and in operational use where the sliding glass doors are in a closed position; 
     FIG. 1 a  is a perspective view of the sliding door locking mechanism of the present invention showing the locking mechanism in a closed position (P 2 ) on one of the sliding glass panels; 
     FIG. 1 b  is an exploded perspective view of the sliding door locking mechanism of the present invention showing the locking mechanism being attached to the inner vertical stile of one of the sliding glass panels; 
     FIG. 2 is a front perspective view of the sliding door locking mechanism of the present invention shown in an assembled state; 
     FIG. 3 is an exploded perspective view of the sliding door locking mechanism of the present invention showing the major component parts thereof; 
     FIG. 4 is an exploded perspective view of the sliding door locking mechanism of the present invention showing a rocker lever arm sub-assembly being connected to a locking pin and a lock releasing pin and being attached to a push button housing for forming of the push button locking assembly; 
     FIG. 5 is an enlarged perspective view of the sliding door locking mechanism of the present invention showing a push button locking assembly in a neutral position; 
     FIG. 6 is a cross-sectional view of the sliding door locking mechanism of the present invention showing the locking mechanism in a closed position; 
     FIG. 7 is a cross-sectional view of the sliding door locking mechanism of the present invention showing the locking mechanism in an opened position; 
     FIG. 8 is a front perspective view of a window locking mechanism of an alternate embodiment of the present invention showing the window locking mechanism in an assembled configuration and in operational use where the sliding glass windows are laterally moved to a closed position; and 
     FIG. 9 is a front perspective view of the window locking mechanism of the alternate embodiment of the present invention showing the window locking mechanism in an assembled configuration and in operational use where the glass windows are moved vertically to a closed position. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED AND ALTERNATE EMBODIMENTS 
     Preferred Embodiment 10 
     A sliding door locking mechanism  10  having an integral push button locking assembly  60  is represented in detail by FIGS. 1 through 7 of the patent drawings. The sliding door locking mechanism  10  is used in conjunction with a pair of sliding glass doors/panels  12  and  32  being mounted between upper and lower sliding tracks  24  and  26 ; and opposing (vertical) side tracks  28  and  30 . The first sliding glass panel  12 , as shown in FIG. 1, includes an upper rail  14 , a lower rail  16 , and vertical stiles  18  and  20  for enclosing a glass window  22  therein. The second sliding glass panel  32 , as shown in FIG. 1, includes an upper rail  34 , a lower rail  36 , and vertical stiles  38  and  40  for enclosing a glass window  42  therein. The sliding door locking mechanism  10  is centrally mounted on the inner vertical stile  18  of the first sliding glass panel  12 , as shown in FIG. 1 a . The outer wall surface  18   s  of inner vertical stile  18  includes mounting openings  19   a  and  19   b  for receiving mounting screws  23  in order to mount the locking mechanism  10  on the outer wall surface  18   s  of vertical stile  18 . The outer wall surface  18   s  of inner vertical stile  18  also includes stile locking pin openings  18   a ,  18   b  for receiving an elongated shaft section  148  of a locking pin  70  therethrough. The outer vertical stile  40  includes a stile locking pin opening  40   a  for receiving an end tip  149  of the elongated shaft section  148  of locking pin  70  therethrough. Stile locking pin openings  18   a ,  18   b  and  40   a  are aligned with each other in order to receive the elongated shaft section  148  of locking pin  70  therethrough, as shown in FIGS. 6 and 7 of the drawings. 
     The sliding locking mechanism  10  as show in FIGS. 2,  3  and  5  includes a locking cover  44  for housing the push button locking assembly  60  therein. The locking cover  44 , as shown in FIG. 3, includes a pair of curved side walls  46  and  48  for gripping by a user&#39;s fingers being integrally connected to a top wall  50 . Each of the curved side walls  46 ,  48  has an interior wall surface  46   i  and  48   i , respectively. Each of the interior wall surfaces  46   i ,  48   i  of curved side walls  46 ,  48  includes an interior slide channel  47  and  49  for slidably receiving (snapping on) a pin block holding base plate  68  thereto (to be further discussed hereinafter). The top wall  50  includes a pair of opposing mounting openings  54   a  and  54   b  for receiving mounting screws  23  therein. Top wall  50  also includes a locking pin opening  56  for receiving a locking pin  70  therethrough and a release pin opening  58  for receiving a lock releasing pin/control pin  72  therethrough. The locking cover  44  further includes end sections  51   a  and  51   b , and each end section  51   a  and  51   b  has an end cap  52   a  and  52   b , respectively, thereon for enclosing the end sections  51   a ,  51   b  of the locking cover  44 , as shown in FIGS. 1 a ,  1   b ,  2  and  3  of the drawings. 
     As shown in FIGS. 3 to  5 , the push button locking assembly  60  includes a push button housing  62  having a pair of pin blocks  64 ,  66  connected to a pin block holding base plate  68 . The push button locking assembly  60  further includes a locking pin  70  and a lock releasing pin/control pin  72 . Additionally, the push button locking assembly  60  also includes a rocker lever arm sub-assembly  74  for moving the locking pin  70  to an opened position P 1  by depressing the lock releasing pin  72  inwardly, see FIGS. 6 and 7 of the drawings. Conversely, the rocker lever arm sub-assembly  74  is used for moving the lock releasing pin  72  outwardly by depressing the locking pin  70  inwardly in order to lock the sliding glass panels  12  and  32  in a closed position P 2 , as depicted in FIGS. 1,  6  and  7  of the drawings. 
     Upper pin block  64  includes a top wall surface  76 , a bottom wall surface  78 , side wall surfaces  80  and  82 , an outer end wall surface  84  and an inner end wall surface  86  having a center grooved channel  88  therein. Grooved channel  88  extends from the top wall surface  76  to the bottom wall surface  78 , as depicted in FIGS. 3 to  5 . The pin block  64  further includes an outer shaft opening  90  and an inner locking pin opening  92 . Both shaft opening  90  and locking pin opening  92  extend from the top wall surface  76  to the bottom wall surface  78 . Pin block  64  is substantially rectangularly-shaped and is made from a durable plastic material. 
     Lower pin block  66  includes a top wall surface  96 , a bottom wall surface  98 , side wall surface  100  and  102 , an outer end wall surface  104  and an inner end wall surface  106  having a centered grooved channel  108  therein. Grooved channel  108  extends from the top wall surface  96  to the bottom wall surface  98 , as depicted in FIGS. 3 to  5 . The pin block  66  further includes an outer shaft opening  110  and an inner release pin opening  112 . Both shaft opening  110  and release pin opening  112  extend from the top wall surface  96  to the bottom wall surface  98 . Pin block  66  is also substantially rectangularly-shaped and is made from a durable plastic material. 
     Base plate  68  includes, as shown in FIGS. 3,  4  and  5  of the drawing, a base member  114  having a top wall surface  116 , a bottom wall surface  118 , an upper end wall surface  120 , a lower end wall surface  122 , and side wall surfaces  124  and  126 . Each of the side wall surfaces  124 ,  126  includes an outer retaining edge tab  128  and  130 . Each of the retaining edge tabs  128 ,  130  of base member  114  are received within each of the interior slide channels  47 ,  49  of cover  44 , respectively, as shown in FIG.  3 . The base member  114  further includes an upper shaft member  132  having an upper shaft member opening  134  and a lower shaft member  136  having a lower shaft member opening  138 . The upper shaft member  134  is adjacent to the upper end wall surface  120  and the lower shaft member  136  is adjacent to the lower end wall surface  122 . The base member  114  also includes an upper base locking pin opening  140  having a circumferential interior perimeter edge  142  and a circular lower releasing pin interior compartment  144 . The upper base locking pin opening  140  is spaced-apart and adjacent to the upper shaft member  134  and the lower releasing pin circular compartment  144  is spaced-apart and adjacent to the lower shaft member  136 , as show in FIG. 3 of the drawings. Additionally, the base member  114  includes a centrally positioned fulcrum element  146  for use with the rocker lever arm sub-assembly  74 . Fulcrum element  146  is integrally connected to the top wall surface  116  of base member  114 . Base member  114  is a substantially elongated rectangularly-shaped structure being made from a blow molded durable plastic material. 
     As shown in FIGS. 1,  3  to  5 , the locking pin  70  includes an elongated cylindrical shaft section  148  having an end tip  149  and being attached to a larger diameter push button section  150  having a proximal chamfered circumferential perimeter edge  152 , an outer end wall surface  154  for finger contact by the user and a distal circumferential perimeter edge  155 . The push button section  150  includes a recessed hole opening  156   f  or receiving one end section  168  of lever arm  166  of rocker lever arm sub-assembly  74  therein. 
     The lock releasing pin  72 , as shown in FIGS. 1,  3  to  5 , includes a large diameter cylindrical push button section  158  having an outer end wall surface  160  for finger contact by the user and an inner lower end wall surface  162  for contacting the top wall surface  116  of base member  114 . The button pushing section  158  includes a recessed hole opening  164  for receiving the other end section  170  of lever arm  166  of rocker lever arm sub-assembly  74 . 
     The rocker lever arm sub-assembly  74 , as shown in FIGS. 3 to  5 , include a lever arm  166  having outer tapered end sections  168  and  170 . Each of the outer end sections  168 ,  170  includes an attachable tensioning spring  172  and  174  thereon for keeping each of the outer end sections  168 ,  170  of lever arm  166  tensioned within each of the recessed hole openings,  156 ,  164  of pins  70 ,  72 , respectively, as shown in FIGS. 4 to  6  of the drawings. Tensioning spring  172  is within recessed hole opening  156  and tensioning spring  174  is within recessed hold opening  164 , as shown in FIG.  5 . Lever arm  166  has a semi-arc shaped configuration (see FIG. 4) being made from a thin metal sheet material such as steel, stainless steel or aluminum. 
     In assembling the rocker lever arm sub-assembly  74  to the push button housing  62  of push button locking assembly  60 , the manufacturer places and aligns the outer shaft opening  90  of the upper pin block  64  with that of the outer and upper shaft member  132  of the base member  114  and pushes the pin block  64  downwardly such that the bottom wall surface  78  of pin block  64  is in contact and abutting the top wall surface  116  of base member  114 , where then the inner locking pin opening  92  of pin block  64  is also aligned with the upper base locking pin opening  140  of base member  114 . This alignment has the side wall surfaces  80 ,  82  of pin block  64  flush and aligned with the side wall surfaces  124 ,  126  of base member  114 , respectively, see FIGS. 4 and 5 of the drawings. 
     The manufacturer in a similar manner again places and aligns the outer shaft opening  110  of the lower pin block  66  with that of the outer and lower shaft member  136  of base member  114  and pushes the pin block  66  downwardly such that the bottom wall surface  98  of pin block  66  is in contact and abutting the top wall surface  116  of base member  114 , where then the inner release pin opening  112  of pin block  66  is also aligned with the lower base release pin compartment  144  of base member  114 . This alignment has the side wall surfaces  100 ,  102  of pin block  66  flush and aligned with the side wall surfaces  124 ,  126  of base member  114 , respectively, as depicted in FIGS. 4 and 5 of the drawings. 
     The manufacturer now aligns and places each of the outer end sections  168 ,  170  having tensioning springs  172 ,  174 , respectively, thereon within each of the upper and lower grooved channels  88 ,  108  of pin blocks  64 ,  66 , respectively. Each of the outer end sections  168 ,  170  are further aligned and inserted within each of recessed hole openings  156 ,  164  of pins  70 ,  72 , respectively, as depicted in FIGS. 4 and 5 of the drawings. This now completes the formation and assembly of the push button locking assembly  60 . 
     In the final assembling step for the formation of the assembled sliding door locking mechanism  10 , as shown in FIGS. 2 to  4 , the manufacturer now slidably snaps-on and encloses the cover  44  onto the push button locking assembly  60  such that each of the push button sections  150 ,  158  of pins  70 ,  72  are received within each of the corresponding pin openings  56 ,  58  on the top wall  50  of cover  44 , respectively, therethrough. Also, the interior slide channels  47 ,  49  of cover  44  are received (snapped-on) by each of the outer retaining tab edges  128 ,  130  of base plate  68  of push button housing  62 , respectively. The mounting opening  54   a ,  54   b  of cover  44  are now aligned with the corresponding shaft member openings  134 ,  138  of base member  114 , respectively, for receiving mounting screws  23  therethrough in order to mount the sliding door locking mechanism  10  on the mounting openings  19   a ,  19   b , on the outer wall surface  18   s  of inner vertical stile  18  of the first glass panel  12 , respectively, as shown in FIGS. 1 a  of the drawings. 
     Alternate Embodiment 200 
     In an alternate embodiment, a window locking mechanism  200  has an integral push button locking assembly  60  which is represented in detail by FIGS. 1 a ,  1   b ,  2 ,  3 ,  8  and  9  of the patent drawings. As shown in FIG. 8, the window locking mechanism  200  is used in conjunction with a pair of sliding glass windows  212  and  232  being mounted between upper and lower sliding tracks  224  and  226 ; and opposing (vertical) side tracks  228  and  230 . Alternatively, the windows may move vertically, as shown in FIG. 9, using the window locking mechanism  200 . The first sliding glass window panel  212 , as shown in FIG. 8, includes an upper rail  214 , a lower rail  216 , and vertical stiles  218  and  220  for enclosing a glass window  222  therein. The second sliding glass window panel  232 , as shown in FIG. 8, includes an upper rail  234 , a lower rail  236 , and vertical stiles  238  and  240  for enclosing a glass window  242  therein. The sliding window locking mechanism  200  is centrally mounted on the inner vertical stile  218  of the first sliding glass panel  212 , as shown in FIG. 1 a . The outer wall surface  218   s  of inner vertical stile  218  includes mounting openings  219   a  and  219   b  for receiving mounting screws  23  in order to mount the locking window mechanism  200  on the outer wall surface  218   s  of vertical stile  218 . The outer wall surface  218   s  of inner vertical stile  118  also includes stile locking pin openings  218   a ,  218   b  for receiving an elongated shaft section  248  of a locking pin  70  therethrough. The outer vertical stile  240  includes a stile locking pin opening  240   a  for receiving an end tip  149  of the elongated shaft section  148  of locking pin  70  therethrough. Stile locking pin openings  218   a ,  218   b  and  240   a  are aligned with each other in order to receive the elongated shaft section  148  of locking pin  70  therethrough, as shown in FIGS. 1 a  and  1   b  of the drawings. All of the component parts of the window locking mechanism  200  of the alternate embodiments are exactly the same as the sliding door locking mechanism  10  of the preferred embodiment, as shown in FIG. 3 of the patent drawings. The window locking mechanism  200  may be used with windows that slide laterally (see FIG. 8) or move up and down (see FIG.  9 ). 
     As depicted in FIG. 9 of the drawings, the window locking mechanism  200  is used in conjunction with a pair of vertically mounted glass windows  212  and  232  being mounted between upper and lower sliding tracks  224  and  226 ; and opposing (vertical) side tracks  228  and  230 . The first (vertically mounted) lower glass window  212 , as shown in FIG. 9, includes an upper rail  214 , a lower rail  216 , and vertical stiles  218  and  220  for enclosing a glass window  222  therein. The second (vertically mounted) upper glass window  232 , as shown in FIG. 9, includes an upper rail  234 , a lower rail  236 , and vertical stiles  238  and  240  for enclosing a glass window  242  therein. The window locking mechanism  200  is centrally mounted to the upper rail  214  of the first glass window  212 . The outer wall surface  214   s  of the upper rail  214  includes mounting openings  219   a  and  219   b  for receiving mounting screws  23  in order to mount the locking window mechanism  200  to the outer wall surface  214   s  of upper rail  214 . The window locking mechanism  200  may be substantially smaller in size (see FIG. 9) than the preferred embodiment of the sliding window locking mechanism  10  (see FIG.  1 ). Further, the interconnections of the window locking mechanism  200  are exactly the same as shown in FIG. 1 a ,  1   b  except the mounting openings and pin openings are through the upper rail  214  and lower rail  236  of the vertically mounted glass windows  212  and  232 , respectively. 
     OPERATION OF THE PRESENT INVENTION 
     In operation, the sliding door locking mechanism  10  operates in the following manner, as shown in FIGS. 1,  6 , and  7  of the drawings. In order to close and lock the sliding door locking mechanism  10  within the sliding glass panels  12  and  32 , the user simply aligns vertical stiles  18 ,  40  of glass panels  12 ,  32  with each other, such that the stile locking pin openings  18   a ,  40   a  are aligned with each other in order to receive the elongated shaft section  148  of locking pin  70  therethrough, as shown in FIG.  1 . As shown in FIG. 6, the user now simply depresses inwardly (F D ) on the outer end wall surface  154  of push button section  150  of locking pin  70  with his or her fingers, such that the elongated shaft section  148  of locking pin  70  slides through each of the stile locking pin openings  18   a ,  18   b  and  40   a  of stiles  18 ,  40 , respectively. This inward movement (F D ) is accomplished via the rocker lever arm sub-assembly  74  where the outer end section  170  of lever arm  166  moves in an outwardly direction, such that the lock releasing pin  72  also slidably moves in an outwardly direction within the inner release pin opening  112  of pin block  66  of the push button locking assembly  60 . The locking pin  70  movement is stopped as the distal perimeter edge  155  of the push button section  150  of locking pin  70  comes in contact with the circumferential interior perimeter edge  142  within the upper base locking pin opening  140  of base plate  68 . This inward movement of locking pin  70  then moves the end tip  149  of the elongated shaft section  148  of locking pin  70  to protrude from an inner wall surface  40   s  of stile  40 . This locking action prevents the sliding glass panels  12 ,  32  from moving in a horizontal direction relative to each other, and the sliding door locking mechanism  10  and sliding glass panels  12 ,  32  are in a locked and closed position P 2 , as depicted in FIGS. 1 a  and  6  of the drawings. 
     To unlock the sliding door locking mechanism  10  relative to each of the sliding glass panels  12 ,  32 , as shown in FIG. 7, the user simply depresses inwardly (F R ) the upper end wall surface  160  of push button section  158  of locking release pin  72  with his or her finger, such that the lower end wall surface  162  of the push button section  158  of locking release pin  72  comes in contact within the lower release pin compartment  144  of base member  114 . This inward movement (F R ) is accomplished via the rocker lever arm sub-assembly  74  where the outer end section  168  of lever arm  166  moves in an outward direction, such that the locking pin  70  slidably moves in an outwardly direction within the locking pin openings  140 ,  92  of push button locking assembly  60 . This outward movement by locking pin  70  then moves the end tip  149  of the elongated shaft section  148  of locking pin  70  from each of the stile locking pin openings  40   a ,  18   a  and  18   b  of stiles  40 ,  18  in order for the user to open the sliding glass panels  12 ,  32  and sliding door locking mechanism  10  to an opened position P 1 , as shown in FIG. 7 of the drawings. 
     The operation of the alternate embodiments (see FIGS. 8 and 9) of the window locking mechanism  200  operates in the same exact manner as the sliding door locking mechanism  10  of the preferred embodiment. 
     ADVANTAGES OF THE PRESENT INVENTION 
     Accordingly, an advantage of the present invention is that it provides for a window locking mechanism or a sliding door locking mechanism having an integrated push button locking mechanism that requires only a minimal number of internal moving component parts. 
     Another advantage of the present invention is that it provides for an integrated push button locking mechanism that includes a control knob or a lock releasing pin, a locking pin and a rocker lever arm, wherein the rocker lever arm is used for inserting or retracting the locking pin from one of the glass sliding door stiles in order to allow the two glass sliding doors to be opened or closed accordingly. 
     Another advantage of the present invention is that it provides for a window locking mechanism or a sliding door locking mechanism that is capable of withstanding everyday wear and tear. 
     Another advantage of the present invention is that it provides for a window locking mechanism or a sliding door locking mechanism having an integrated push button locking mechanism that is secure, safe, efficient, durable and easy to use. 
     Another advantage of the present invention is that it provides for a window locking mechanism or a sliding door locking mechanism that is easily installed without the necessity for extensive modifications of the existing windows or sliding glass doors. 
     Another advantage of the present invention is that it provides for a sliding door locking mechanism that prevents the panels of the glass siding doors from sliding horizontally relative to each other in their respective tracks. 
     Another advantage of the present invention is that it provides for a sliding door locking mechanism that is aesthetically pleasing and unobtrusive when mounted on the vertical stile of one of the sliding glass doors. 
     Another advantage of the present invention is that it provides for a window locking mechanism or a sliding door locking mechanism that is rapidly locked and unlocked to a closed or opened position. 
     Another advantage of the present invention is that it provides for a sliding door locking mechanism that is permanently mounted on the vertical stile using a minimum number of tools. 
     A further advantage of the present invention is that it provides for a window locking mechanism or a sliding door locking mechanism which is capable for locking a wide variety of closures such as sliding windows, standard house windows, display case doors, sliding panel doors, sliding glass doors and the like. 
     A still further advantage of the present invention is that it provides for a window locking mechanism or a sliding door locking mechanism that can be mass produced in an automated and economical manner and is readily affordable by the consumer. 
     A latitude of modification, change, and substitution is intended in the foregoing disclosure, and in some instances, some features of the invention will be employed without a corresponding use of other features. Accordingly, it is appropriate that the appended claims be construed broadly and in a manner consistent with the spirit and scope of the invention herein.