Abstract:
A remote controllable dead bolt type of locking apparatus is to be retrofittedly mounted in conjunction with a conventional garage door which is to function to securely lock the garage door preventing unauthorized entry through the garage door. The locking apparatus uses an elongated draw bar assembly that connects between the right side door jamb and the left side door jamb which defines the transverse sides of the opening within which is mounted the garage door. The draw bar assembly is to be linearly moved by a draw bar drive which is to be electrically activated when operating of a hand held remote that operates the conventional garage door opening mechanism.

Description:
BACKGROUND OF THE INVENTION 
     1) Field of the Invention 
     The field of this invention relates to door locks and more particularly to a door locking apparatus for a conventional garage door which may be operated by the remote controlled automatic garage door operating mechanism that is commonly mounted in conjunction with garage doors. 
     2) Description of the Prior Art 
     Automatic garage door opening mechanisms have now become exceedingly common in conjunction with garage doors of residences such as houses, condominiums and apartments. These garage door opening mechanisms are principally for the purpose of allowing the user the convenience to open his or her garage door by a radio actuated switch which is commonly referred to as a remote. Garage door operating mechanisms are also intended to provide security for the garage door so that when the garage door is in the closed position, the garage door is to be maintained closed unless it is actuated only by the individual with the remote. However, this has been known to impart a false sense of security for the garage door as residential burglary is commonly achieved by entry of the burglars through the garage door. 
     A common form of garage door is constructed of a single flat piece with the flat piece to be pivoted from a vertically oriented position when the garage door is closed to a substantially horizontal position when the garage door is open. When the garage door is in the closed position, it is possible for a burglar to pry open a bottom corner of the door, particularly of a double car door, a sufficient distance to allow a small person to wiggle through the produced opening and gain entrance to the interior of the garage. Once in the garage, the burglar will have access to a push button to open the garage door and generally has access to the interior of the residence through an access door into the garage. After burglarizing of the residence, the burglar may load burglarized goods into a vehicle that is located within the garage, then start the vehicle, open the garage door and proceed with an unnoticed escape. In the past, it has been known to provide solenoid actuated latches in the lower corners of the garage door that when latched will prevent a person from wiggling through a pried up corner of the door. However, these solenoid types of latches are normally large in size and inherently expensive. Also, the mounting arrangement for the solenoid latches is complex with this complexity greatly increasing the cost of installation of such a locking arrangement. 
     In the past it has been known to utilize a separate manual garage door locking mechanism. While satisfactory for their intended purpose, such manually operated locking mechanisms are not readily adaptable for use with garage doors that incorporate automatic openers as such would not provide the convenience of automatic operation. In other words, with an individual approaching the garage door with one&#39;s car, it would require that the individual leave the car, go the garage door and open the garage door and then get back into the car and then move the car within the garage. The individual then would be required to exit the car and then close the garage door prior to entry within the residence. It is far more convenient to use a remotely operated opening mechanism which does not require that the individual leave the car in order to gain access to within the garage and then can close the garage door as the individual is entering the residence not requiring the procedure of separately closing the garage door. 
     SUMMARY OF THE INVENTION 
     The structure of the present invention is directed to a garage door locking mechanism which may be utilized on any garage door whether or not it includes an automatic garage door opening apparatus. However, the structure of the present invention is designed to be of particular advantage when used in conjunction with an automatic door opener and the present invention will be discussed primarily in conjunction with such an opener. In particular, the garage door locking apparatus of the present invention utilizes an elongated draw bar assembly that is mounted on the garage door and connects between the right side door jamb and the left side door jamb of the garage door. The draw bar assembly is to be connected in a dead bolt type of locking arrangement with these door jambs. The draw bar assembly is to be linearly movable by a drive mechanism. The drive mechanism is electrically operated and is connected to the automatic garage door opener. Actuation of the garage door opener to open the garage door will immediately move the draw bar assembly to an unlatching position which will then permit the garage door to be opened. operating of the automatic garage door opener to move the garage door from an open position to a closed position will cause the locking apparatus to be moved to a locking position once the garage door is in the closed position. The locking apparatus of this invention is to include a vacation lock feature that will permit the user to permanently affix the locking apparatus in the latched position which will not permit the garage door to be opened even with actuation of the remote. The locking apparatus is to also include a power failure release that upon the loss of electrical power, the locking apparatus can be manually moved to the unlatched position which will permit manual opening of the garage door. Also, the locking apparatus is to include a manual reset to place the locking apparatus back in the normal operating position after operation of the power failure release. 
     One of the primary advantages of this invention is to create a garage door locking apparatus which can be retrofitted into existing garage doors and automatic garage door openers. 
     Another primary advantage of this invention is to construct a garage door locking apparatus which makes it extremely difficult for a home to be burglarized by means of entry through the garage door. 
     Another advantage of this invention is to construct a garage door locking apparatus which can be installed in a garage door in a manner of a few minutes by individuals of limited mechanical skill. 
     Another advantage of this invention is to construct a garage door locking apparatus which includes a feature to unlatch the apparatus in the event an electrical power failure occurs. 
     Another advantage of this invention is to construct a garage door locking apparatus which includes a key operated lock which, when operated, will locate the locking apparatus in the latched position which is ideal as a “vacation lock” which maintains the locking apparatus locked while the user is away from his or her residence. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1A is inside perspective view of a typical garage door which has installed thereon an electrically actuated garage door opener and also on which is installed the locking apparatus of the present invention; 
     FIG. 1B is an elevational view of the inside surface of the garage door of FIG. 1; 
     FIG. 2 is a top plan view of the drive mechanism with the draw bar assembly which is mounted on the left door jamb of the garage door opening in the locked position taken along line  2 — 2  of FIG. 1B; 
     FIG. 3 is a top plan view of the dead bolt locking arrangement of the draw bar assembly that is mounted on the right side door jamb of the garage door opening taken along line  3 — 3  of FIG. 1B; 
     FIG. 4 is a partial cross-sectional view through the drive mechanism taken along line  4 — 4  of FIG. 2; 
     FIG. 5 is a cross-sectional view taken along line  5 — 5  of FIG. 3; 
     FIG. 6 is a across-sectional view taken along line  6 — 6  of FIG. 4; 
     FIG. 7 is a cross-sectional view taken along line  7 — 7  of FIG. 4; 
     FIG. 8 is a cross-sectional view taken along line  8 — 8  of FIG. 4; 
     FIG. 9 is a cross-sectional view taken along line  9 — 9  of FIG. 8 which shows the vacation lock feature in the unlocked position; 
     FIG. 10 is a cross-sectional view similar to a portion of FIG. 9 showing the vacation lock feature in the locked position; 
     FIG. 11 is a view similar to FIG. 2 but showing the draw bar assembly in e unlocked position; 
     FIG. 12 is a view similar to FIG. 3 but cross-sectionally showing the draw bar dead bolt type of locking arrangement in the unlatched position; 
     FIG. 13 is a side view taken along line  13 — 13  of FIG. 11; 
     FIG. 14 is a cross-sectional view taken along line  14 — 14  of FIG. 13; 
     FIG. 15 is a cross-sectional view taken along line  15 — 15  of FIG. 11 showing the power failure release handle in the released position; 
     FIG. 16 is an end view of the drive mechanism, included within the present invention, depicting the operation of the manual reset included within this invention; 
     FIG. 17 is a side view, partly in cross-section, of the connection between a lever which moves the primary draw bar segment with the draw bar assembly in the unlatched position taken along line  17 — 17  of FIG. 13; and 
     FIG. 18 is a view similar to FIG. 17 but showing the primary draw bar segment in the latched position taken along line  18 — 18  of FIG.  4 . 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring particularly to FIGS. 1A and 1B, there is shown a garage door opening  20  which is formed between a right side door jamb  22  and a left side door jamb  24 . The lower end of the opening  20  is closed by floor  26 . The upper end of the opening  20  is closed by cross beam  28 . A garage door  30  is mountable in a vertically oriented manner to substantially close the opening  20 . The garage door  30  is counter-balancingly supported by spring assemblies  32  and  34  which will permit the garage door  30  to be opened with a low amount of force. Attached to the door  30  is an automatic garage door opener  36 . The automatic garage door opener  36  includes a housing  38  which is supported on bracing support members  40  which are fixably mounted within the interior structure of the garage, which is not shown. Between the housing  38  and the cross beam  28  is mounted a rail  42 . Within the rail  42  is to be located a driving mechanism, such as a chain, which is to be connected to an arm  44 . The arm  44  connects directly with the garage door  30 . Activation of the automatic garage door opener  36  by means of remote  46  will cause the arm  44  to move along the rail  42  with the result that the garage door  30  is moved from the closed position shown in FIGS. 1A and 1B, to the open position, which is not shown. The open position is when the garage door  30  is located substantially horizontal. Reactivation of the hand held remote  46  with the garage door in the open position will result in the garage door  30  being moved to the closed position by the automatic garage door opener  36 . 
     The garage door locking apparatus  48  of this invention includes an electrical motor  50 . This electrical motor  50  is electrically connected to an electronic controller, which is not shown, and by electrical cable  52  to within the housing  38  of the automatic garage door opener  36 . It is to be understood that the automatic garage door opener  36  is to be automatically activated when the garage door locking apparatus  48  of this invention is activated. If the garage door  30  is in the closed position, and the remote  46  is operated, the garage door locking apparatus  48  will be moved to an unlatched position so as to permit the garage door  30  to be moved to its open position. When the remote  46  is activated and the garage door  30  is moved from the open position to the closed position, and upon the closed position being achieved, then the garage door locking apparatus  48  will then be activated to be moved from the unlatched position to the latched position. 
     Mounted on the right side door jamb  22  directly adjacent the floor  26  is a latch plate  54 . The latch plate  54  includes a hole  56 . The latch plate  54  is fixedly mounted by bolts  58  to the right side door jamb  22 . Fixedly mounted onto the garage door by means of bolts  60  is a support plate  62 . The support plate  62  has a right angled flange  64  which includes a hole  66 . Hole  66  is the same size and shape as hole  56  and is to be alignable with hole  56  when the garage door  30  is in the closed position. The support plate  62  also includes a sleeve  68 . Telescopingly received within the sleeve  68  is an outer segment  70  of a draw bar assembly  72 . The outer segment  70  would normally be constructed of hollow bar stock and would be metallic and rigid. The outer segment  70 , after passing through the sleeve  68 , automatically aligns with the hole  66 . The outer segment  70  is connected by means of bolt  74  to resilient member  76 . Typical material for the resilient member  76  would be a semi-rigid rubber composition. The resilient member  76  is connected by bolts  78  to center segment  80  of the draw bar assembly  72 . The center segment  80  would normally be constructed of the same material as the outer segment  70  and will be of the same size. The center segment  80  is mounted in conjunction with a support sleeve  82  which is fixably mounted onto the garage door  30 . It is the function of the support sleeve  82  to provide support for the draw bar assembly  72  but yet permit lineal movement of the draw bar assembly  72 . 
     The center segment  80  is then connected by bolts  84  to another resilient member  86 . The resilient member  86  is then connected by a bolt  88  to an inner segment  90  of the draw bar assembly  72 . The inner segment  90  will be constructed of the same material as the center segment  80 . The inner segment  90  is telescopingly mounted within a sleeve  92  which is fixedly mounted on a support plate  94 . The support plate  94  is fixedly mounted by bolts  96  to the structure of the garage door  30 . 
     The support plate  94  includes a right angled flange  98 . Flange  98  includes a hole  100 . The inner segment  90 , after passing through the sleeve  92 , is to be aligned with and capable of passing through the hole  100 . Mounted against the flange  98  is a slide lock-out plate  102 . Slide lock-out plate  102  is held against the flange  98  by means of headed bolt  104  which connects with elongated slot  106 . Slide lock-out plate  102  includes a cut-out slot  108  and an angled slot  110 . Mounted on the slide lock-out plate  102  is a biased latch arm  112 . The biased latch arm  112  is pivotally mounted by bolt  114  to the slide lock out plate  102 . Mounted on the bolt  114  is a coil spring  116 . One end  118  of the coil spring  116  connects with pin  120  which is fixedly mounted onto a bias latch arm  112 . The opposite end  122  of the coil spring  116  connects with pin  124  which is mounted on the slide lock out plate  122 . The coil spring  116  exerts a constant bias tending to pivot the bias latch arm  112  counterclockwise, and with the headed bolt  104  in the lower end of the elongated slot  106 , the notch  126  formed in the outer end of the bias latch arm  112  will engage with the headed bolt  104 . This will be the position when the garage door  30  is open. When the garage door  30  is moved to the closed position, and just prior to the garage door  30  becoming closed, a pin  128  will connect with the angle slot  110 . As the garage door  30  further closes, the pin  128  will ride along angle slot  110  linearly moving the slide lock-out plate  102  from the position shown in FIG. 14 to the position shown in FIG.  6 . At the same time the bias latch arm  112  is pivoted clockwise. The pin  128  is mounted on right angled flange  130  of a drive support plate  132 . The right angled flange  130  has attached at its outer end a stop flange  134 . The function of the stop flange  134  is to define the inward limit of movement of the garage door  30 , and when the flange  98  abuts against the flange  134 , this inward limit of movement is defined when inner segment  90  is aligned with hole  100 . 
     Fixedly mounted onto the support plate  94  is a pin  136 . Pivotally mounted on the pin  136  is a lever  138 . The inner end of the lever  138  is located within the cutout slot  108 . The opposite end of the lever  138  is formed into a right angled extension  140 . The right angled extension  140  is capable of coming into contact with a bar latch  142  which is pivotally mounted onto the inner segment  90 . During linear movement of the inner segment  90 , the bar latch  142  is capable of being moved from the unlatching position, shown in FIG. 13, to the latched position shown in FIG. 4, and when in the latched position, the bar latch  142  is in contact with pin  144  which is fixedly mounted onto support plate  94 . The inner segment  90  rides on a roller bearing  146 . The roller bearing  146  is fixedly mounted onto the support plate  94 . The bar latch  142  connects with a similar roller bearing  148 . This roller bearing  138  is also mounted onto the support plate  94 . 
     When the inner segment  90  is moved in a direction toward the slide lock-out plate  102 , the roller bearing  148  will cause the latching end  150  of the bar latch  142  to be pivoted to a spaced position away from the inner segment  90 . This pivoting is assured by the right angled extension  140  coming against the outer end of the bar latch  142  pressing such down against the inner segment  90 . This is again the unlatched position of the locking apparatus of the present invention which will permit the garage door  30  to be opened. However, the free end of the inner segment  90  is contactable by a primary draw bar segment  152  which is telescopingly mounted within a sleeve  154  which is fixedly mounted onto the drive support plate  132 . The primary draw bar segment  152  includes a notch  156 . With the primary draw bar segment  152  fully extended and passing through hole  158  of the right angled flange  130  and hole  100  of the slide lock-out plate  102  and into contact with the inner segment  90  and forcing of inner segment  90  to the far right position shown in FIG. 4, the latching end  150  will engage with the notch  156 . The fully extended position of the primary draw bar segment  152  occurs when pin  153 , which is mounted on the segment  152 , contacts sleeve  154 . In essence, the inner segment  90  and the primary draw bar segment  152  are then connected together with also the outer segment  70  being located within the aligned holes  56  and  66 . The garage door  30  is now latched. 
     The primary draw bar segment  152  includes a cutout  160 . Within the cutout  160  is located one end of a lever  162 . The lever  162  is pivotally mounted on a center shaft  164 . Also, one end of a rod  166  is connected to the lever  162 . The portion of the lever  162  that connects with primary draw bar segment  152  is rounded in order to freely pivot lever  162  between a first position and a second position relative to the primary draw bar segment  152 . However, lever  162  has an engagement in the form of a flat face  163  which abuts against edge  165  of primary draw bar segment  152  when in the second position which is the latched position. This creates an “over center” lock which prevents movement of the primary draw bar segment  152  toward the first position which is the unlatched position. If a burglar thinks he or she can deactivate the locking apparatus by manually moving the draw bar assembly  72  to the unlatched position, such is not possible. Movement to the unlatched position can only occur by activating motor  50  as long as electricity is being supplied to the motor  50 . 
     The opposite end of the rod  166  is mounted onto an elongated slot  170  of a slide plate  168 . The slide plate  168  is mounted for lineal sliding movement on the slide wall  172  by means of a pair of spaced apart brackets  174  and  76 . Fixedly mounted onto one end of the slide plate  168  is a pin  178 . The pin  178  is connected to one end of a coil spring  180 . The opposite end of the coil spring  180  is attached to pin  182  which is fixedly mounted onto the bracket  174 . The function of the coil spring  180  is to exert a continuous bias on the slide plate  168  tending to locate such in the rearwardmost direction, which is shown in FIG. 15 of the drawings. This will also simultaneously tend to locate the primary draw bar segment  152  in its rearwardmost position in contact with stop pin  184  which is fixedly mounted onto the drive support plate  132 . The drive support plate  132  is fixedly mounted by bolts  186  to the wall structure  188  within which is formed the left side door jamb  24 . 
     The center shaft  164  is rotatably mounted between sidewall  172  and sidewall  190  which is located parallel but spaced apart from the sidewall  172 . Both the sidewall  172  and sidewall  190  are integrally connected to the drive support plate  132 . The center shaft  164  is fixedly mounted onto a wheel  192  which is mounted on the outside surface of the sidewall  172 . Interiorly of the sidewall  172 , the center shaft  164  is attached to a spacer bushing  194 . Interiorly of the spacer bushing  194  is mounted the lever  162 . The center shaft  164  is then fixedly secured to a clutch plate  196 . Clutch plate  196  is fixedly secured by a series of bolts  198  to a clutch plate  200 . In between the clutch plates  196  and  200  is mounted a series of clutch discs  202 . The clutch discs  202  are fixedly mounted onto a center shaft extension  204 . The center shaft extension has fixedly mounted thereon a gear wheel  206 . It is to be understood that the longitudinal center axis of the center shaft extension  204  coincides with the longitudinal center axis of the center shaft  164 . The center shaft extension  204  is then pivotally supported onto the sidewall  190 .The gear wheel  206  is in engagement with a worm gear  208 . The worm gear  208  is mounted on a motor shaft  210 . The motor shaft  210  is rotated by means of the electric motor  50 . 
     The purpose of the clutch comprising clutch plates  96  and  200 , clutch discs  202  and bolts  198 , is to prevent burning up of the motor  50 . If for any reason the garage door  30  gets stuck in a particular position, or any portion of the overall mechanism jams, then the motor will continue to operate in the normal manner with slippage occurring between the clutch plates  196  and  198  and the clutch discs  202 . In other words, relative movement will occur between center shaft  164  and center shaft extension  204 . The amount of force required to cause slippage to occur between the discs  202  and plates  196  and  198  can be adjusted by loosening or tightening of bolts  198 . 
     If, per chance, there is an electrical power failure, and the garage door locking apparatus of this invention is in the locked position, it will be necessary for the user, in order to open the garage door  30 , to have the garage door locking apparatus of this invention moved to the unlatched position. This unlatching will have to be accomplished manually because of the lack of electrical power. It is for this reason that handle  212  is provided. Handle  212  is pivotally mounted by means of bolt assembly  214  to the sidewall  172 . Handle  212  includes a protuberance  216  on its inner surface. Protuberance  216  connects with hole  218  formed within the sidewall  172 . With the primary draw bar arrangement  152  in its full outwardly extended position, the draw bar  152  connects with the hole  158  and hole  100  thereby locking of the garage door  30 . Also, outer segment  70  is located within the hole  66 . The slide plate  168  is positioned far enough to the right in FIG. 15 so that protuberance  216  passes through the hole  218  and abuts against the back end  220  of the slide plate  168 . Therefore, the protuberance  216  prevents the slide plate  168  from moving to the left in FIG. 15 even though it is encouraged to do so by the coil spring  180 . However, upon the user grasping the handle  212  and moving such in an outward direction causing protuberance  216  to disconnect from the back end  220 , the slide plate  168  will then move to the position shown in FIG.  15 . The result is the primary draw bar segment  152  is then disengaged from the holes  100  and  158  and at the same time the secondary draw bar, composed of draw bar segments  90 ,  80  and  70 , is also moved so that draw bar segment  70  is disconnected from the hole  66 . The garage door locking mechanism of this invention is now in the unlatched position which will then permit the user to manually open the garage door  30 . Switch  267  functions to cut power to motor  50  after handle  212  is pulled. Switch  267  opens when slide plate  168  is moved rearwardly. 
     Let it now be assumed that the electrical power has now returned and the user wishes to place the garage door locking apparatus of this invention in its normal mode for operation. In order to achieve this, slide plate  168  has to be moved back so that the back end  220  again rides against the protuberance  216  with the handle  212  abutting against sidewall  172 . In order to achieve this, there is provided a reset handle  222  which is fixedly secured to a pivot rod  224 . The pivot rod  224  is mounted between sidewalls  172  and  190 . Adjacent wall  172  is the pivot rod  224  which is fixedly secured to a lever  226 . Handle  222 , when at rest, is positioned against the stop plate  230 . The coil spring  228  connects between the handle  222  and pin  232  which is fixedly mounted onto the sidewall  190 . When the handle  222  is pivoted against the bias of the spring  228  away from the stop plate  230 , the lever  226  is caused to be moved against the back end  220  of the slide plate  168  and the outward pivoting motion of the reset handle  222  will result in the slide plate  168  being moved back to the position shown in FIG. 9 of the drawings so that the protuberance  216  can be conducted through hole  218  to reconnect with the back end  220 . 
     When the garage door  30  is moved to the closed position, the door  30  contacts pin  234 . Pin  234  is fixedly mounted onto the rod  236 . Rod  236  is slidingly mounted within a sleeve  238 . Sleeve  238  is fixedly mounted onto right angled flange  130 . Fixedly attached to the rod  236  is a pin  240 . Pin  240  is connected by a coil spring  242  to bracket  244 . Bracket  244  is fixedly mounted onto right angled flange  130 . Also mounted on the right angled flange  130  is a microswitch  246 . When the garage door contacts pin  234 , the rod  236  is slid within the sleeve  238  which results in the pin  240  coming into contact with the follower  248  of the microswitch  246  closing the microswitch  246 . This closes the circuit to the control circuitry, which is not shown. The control circuitry activates the motor drive circuit to cause the draw bar assembly  72  to be located in the latched position. Microswitch  250  is mounted on the sidewall  172  and connects with the wheel  192 . Microswitch  250  is a limiting switch. This switch  250  cuts the power to the motor drive circuit, hence to the motor  50 . The switch  250  is closed by the wheel  192  with the follower  252  not being located within one of the two notches  254  and  256  formed within the wheel  192 . When the garage door is latched, the notch  254  connects with the follower  252  and the microswitch  250  is opened which cuts the power to the motor circuit. Microswitches  258  and  260  are also in engagement with the wheel  192 . Microswitch  260  is in the position of transmitting electrical power when the garage door is in the latched position. Both microswitches  258  and  260  are in the on position. The function of switch  258  is to activate a timer circuit which reverses polarity of the motor circuit so the motor can now reverse the next time it is actuated. Microswitch  260  is a dual function switch. When it is not engaged with notch  256 , it prevents the garage door opening circuit from activating and opening the garage door by the automatic garage door opener  36 . When the microswitch  260  is engaged with notch  256 , the microswitch  260  closes activating the automatic garage door opening circuit of the automatic garage door opener  36 . The function of microswitch  258  ensures that the automatic garage door opener  36  cannot be opened until the garage door locking apparatus of this invention is in the unlatched position. 
     Microswitch  266  is a power cut-off switch. The microswitch  266  is controlled by rod  270 . Rod  270  includes a cutout notch  272 . The primary draw bar segment  152  normally slides within the notch  272 . However, when rod  270  aligns with notch  274  formed within the primary draw bar segment  152 , the rod  270  can then be pivoted one hundred eighty degrees permitting the rod  270  to fall within the notch  274  and the follower  276  will then come to rest within the cutout notch  272 . This will cause the microswitch  266  to open which cuts the power to the motor  50 . This means that the garage door locking apparatus of this invention cannot be operated and it is locked in the latched position. This locking in the latched position is achieved by key lock  278  which is to be operated by key  280 . This is to be deemed the vacation key lock feature which is to be utilized when the user is on vacation in order to maintain the garage door locking apparatus of this invention in the locked position. It is to be understood that the key  280  is to be removed and retained by the user requiring the key  280  to be reinserted and operate the lock  280  which will then pivot the rod  270  out of the notch  274  which will then permit the primary draw bar segment  152  to be retracted and the garage door  30  unlatched. The key lock  278  is mounted within cross member  282  which is fixedly secured between the sidewalls  172  and  190 . The rod  270  is fixedly secured to U-shaped bracket  284  which in turn is pivotally mounted by the lock mechanism of the key lock  278 . For a view showing the position of the rod  270  in engagement with the notch  274 , reference is to be had to FIG. 10 of the drawings. 
     It is to be understood that the garage door locking apparatus  48  could be used with any type of garage door, such as a “roll up” door.