LOCKABLE GUARD FOR VENDING MACHINE FIELD OF THE INVENTION
The present invention relates generally to vending machine locks and particularly to a lockable guard for a vending machine lock BACKGROUND OF THE INVENTION
Lockable guards for protecting vending machines, coin operated switches and other related metering devices, are known The following US Patents are related to such lockable guards 2,716,882, 3,444,712, 3,857,264 and 4,350,032
US Patent Application 09/324,717 to Brisson describes a high security cover for a vending machine lock Vending machine locks are generally inexpensive, low security locks The purpose of the Brisson cover is to prevent unauthorized access to vending machines with a high degree of security The security cover includes a frame mountable on a vending machine by two or more fasteners The frame is fittable over a lock of the vending machine Hinged to the frame is a closure member which includes a lock and locking element By actuating the lock, the locking element can be brought into locking engagement with a latch secured to the frame, thereby locking the security cover over the vending machine lock
A disadvantage of the Brisson cover is that the locking element, which is spring loaded, can be opened by application of an external, strong force, without the use of an authorized key, thereby defeating the high security which is sought SUMMARY OF THE INVENTION
The present invention seeks to provide a lockable guard for a vending machine lock, which improves the high security cover of Brisson The lockable guard of the present invention provides a dead bolt action with a high level of locking security The lockable guard has a modular type of construction for ease of manufacture There is thus provided in accordance with a preferred embodiment of the present invention a lockable guard for a vending machine, including a frame fastenable to a vending machine, a locking bolt receiving member secured to an inner surface of the frame, a cover member hinged to the frame by means of a hinge, a lock secured to the cover member, and a dead bolt operatively connected to and actuable by the lock, the dead bolt being arranged for selective locking engagement with the locking bolt receiving member
In accordance with a preferred embodiment of the present invention the lock includes a cam with a tongue protruding therefrom, the tongue being received in a notch formed in the dead bolt
Further in accordance with a preferred embodiment of the present invention the locking bolt receiving member has an aperture formed therein, the dead bolt being arranged for selective movement into and out of the aperture
Still further in accordance with a preferred embodiment of the present invention a cylinder guard is mounted on an outer face of the cover member over the lock, the cylinder guard having a keyway opening formed therein aligned with a keyway of the lock.
Additionally in accordance with a preferred embodiment of the present invention the cylinder guard includes a pair of integrally formed lugs which extend through openings formed in the cover member, the lugs having holes formed therein in which the dead bolt is slidingly mounted
In accordance with a preferred embodiment of the present invention the hinge is mounted to the cover member by means of a bracket, and the lock is secured to the cover member by means of a washer, and the bracket abuts against the washer.
BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be understood and appreciated more fully from the following detailed description, taken in conjunction with the drawings in which'
Figs 1 and 2 are simplified, front perspective and rear perspective illustrations, respectively, of a lockable guard for a vending machine, constructed and operative in accordance with a preferred embodiment of the present invention; Figs 3 and 4 are simplified, front and rear view illustrations, respectively, of the lockable guard of Figs 1 and 2, and
Fig 5 is a simplified sectional illustration of the lockable guard of Figs. 1 and 2, taken along lines V-V in Fig 4
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT Reference is now made to Figs 1-5 which illustrate a lockable guard 10 for a vending machine (not shown), constructed and operative in accordance with a preferred embodiment of the present invention
Lockable guard 10 preferably includes a frame 12 fastenable to a vending machine (not shown) by means of one or more bolts 14 (Figs 1 and 2). A locking bolt receiving member 16, such as U-shaped bracket, for example, is preferably secured to an inner surface of frame 12 (Fig 5) Locking bolt receiving member 16 is preferably formed with an aperture 18 (Fig 5)
A cover member 20 is preferably hinged to frame 12 by means of a hinge 22 Frame 12 and cover member 20 are preferably constructed of a sturdy material, such as hardened steel A lock 24, such as a cylinder lock, is secured to cover member 20, preferably by means of a washer 26 (Figs 4 and 5) Hinge 22 is preferably secured to cover member 20 by means of a bracket 28, which may be secured to hinge 22 by screws 30 Bracket 28 preferably abuts against washer 26 (Fig 4), thereby facilitating assembly of lockable guard 10 Thus, bracket 28 not only serves the purpose of mounting hinge 22, but also serves the purpose of facilitating mounting lock 24 with washer 26
Lock 24 may be any kind of cylinder lock, such as a telescoping pin cylinder lock A dead bolt 32 is operatively connected to and actuable by lock 24 In accordance with a preferred embodiment of the present invention, lock 24 includes a cam 34 with a tongue 36 protruding therefrom (Fig 4) Tongue 36 is received in a notch 38 formed in dead bolt 32 Dead bolt 32 may spring loaded by means of a spring 40 As can be seen best in Figs 2 and 5, dead bolt 32 is arranged for selective movement into and out of aperture 18, by suitable rotation of lock 24 with an authorized key (not shown) It is readily seen that dead bolt 32 can only be thrown by the action of tongue 36, thus providing a high level of locking security This is in contrast with the Brisson cover of the prior art, wherein the locking element can be opened by application of an external, strong force, without the use of an authorized key
A cylinder guard 42 is preferably mounted on an outer face of cover member 20 over lock 24 Cylinder guard 42 has a keyway opening 44 formed therein aligned with a keyway 46 of lock 24 (Fig 3) Cylinder guard 42 preferably includes a pair of integrally formed lugs 48 which extend through openings 50 formed in cover member 20 Lugs 48 have holes 52 formed therein in which dead bolt 32 is slidingly mounted (Fig 2) Thus, cylinder guard 42 not only serves the purpose of protecting lock 24, but also serves the purpose of slidingly mounting dead bolt 32
It will be appreciated by persons skilled in the art that the present invention is not limited by what has been particularly shown and described hereinabove Rather the scope of the present invention includes both combinations and subcombinations of the features described hereinabove as well as modifications and variations thereof which would occur to a person of skill in the art upon reading the foregoing description and which are not in the prior art