AUSTRALIA Patents Act 1990 COMPLETE SPECIFICATION Innovation Patent Applicant(s): Pro Systems Australia Pty Limited Invention Title: Alarmed Locking System The following statement is a full description of this invention, including the best method for performing it known to me/us: - 2 ALARMED LOCKING SYSTEM This invention relates to an alarmed locking system, more particularly to a security alarmed radio frequency 5 identifying (RFI) locking system. There are many types of security locks currently available which utilize a mechanical lock and key to lock and secure doors of display cabinets, drawers, and 10 entry/exit doors. There are also many types that are electronically operated and connected to alarms to sound when the security is compromised. Shop assistants in many stores need to carry a multitude of keys to lock/unlock the different mechanical and electronic locks. Shop 15 assistants also frequently need to enter codes to arm and disarm alarms if connected to that lock. There has been a need for a device that will lock/unlock various doors, cabinets and other areas that 20 need a controlled access while at the same time the device needs to have a capacity to be alarmed and the alarm to sound if the security of the protected area is compromised. 25 It is these issues that have brought about the present invention. According to one aspect of the present invention there is provided a lock comprising a casing that houses a 30 locking member that is displaceable from an inoperative withdrawn position to an operative position in which the locking member projects out of the casing, drive means to cause movement of the locking member between the two positions, control means for the drive means actuated by 35 radio frequency and an alarm circuit that is arranged to be opened on closure and closed on opening using a radio frequency identifying device. 32737281 (GH Matters) P90098.AU 4/04/12 - 3 Preferably the driving means is an electrically driven servo motor. The power source may be mains electricity or a backup battery source. 5 The locking member is preferably a pin that is driven by the servo motor against a spring. A limit switch is preferably positioned adjacent the pin to be activated by movement of the pin. 10 An embodiment of the present invention will now be described by way of example only with reference to the accompanying drawings in which: Figure 1 is a perspective view of an outer casing of is a lock, Figure 2 is a view of a radio frequency key tag, Figure 3 is a perspective view of the base structure of the lock; and Figure 4 is a perspective view of a panel configured 20 with a RFI reader, a printed circuit board and a series of LEDs. The lock illustrated in the accompanying drawings comprises a rectangular base 10 that is located within a 25 cover 2 that defines a rectangular enclosure having a front wall 20 side walls 21 and 22, top 23 and base 24. The rectangular enclosure has peripheral lateral flanges 25 and 26 that allow the lock to be fastened to a cabinet or base structure by use of fasteners (not shown) that 30 extend through slots 12 in each flange. The interior of the casing has threaded abutments (not shown) at each corner so that countersunk fasteners (not shown) can extend through apertures 27 in the corners of the base 1 to secure the base 10 inside the cover 2. 35 The rectangular enclosure of the housing supports a rectangular vertically extending board 30 that carries an 3273728_1 (GHMatters) P90098.AU 4/04/12 - 4 array of LEDs 18 a radio frequency identifying (RFI) reader 31 and an electronics control circuit board 32. The panel 30 is secured to extend vertically from a rectangular battery pack 5 that sits above the base 1 s within the cover 2. The rectangular enclosure of the cover 2 also includes an alarm siren 3 that is mounted in the wall 21. The top 23 of the enclosure includes a viewing panel 13 through which the LEDs 15 on the board 30 can be viewed. The front face 20 of the rectangular 10 enclosure has, towards its base, a slot 14 with a curved end to enable passage of a locking bolt 8. The main components that drive the lock are illustrated in Figure 3 which is a perspective view of the is base 1. An elongate cylindrical locking bolt 8 extends through an aperture 40 in the front face of the base through an aperture 42 in the housing 41 at the rear of the base. A coil spring 10 surrounds the bolt 8 and urges the bolt to the outward or operative position shown in 20 Figure 3. A servo motor 6 is driven by a source of mains electricity coming through a power supply 11. The battery pack 5 provides backup should the power be unavailable. The servo motor 6 is coupled to the locking bolt 8 25 via a lever 7 that is geared to the output shaft of the servo motor. The lever 7 is in turn coupled to a drive pin 9 that extends through the centre of the locking bolt 8. When the servo motor is actuated the shaft drives the gear to cause the lever 7 to pivot and pull the locking 30 bolt 8 back into the housing 41 against the spring 10 to open the lock and provides access to the door, cabinet etc. A micro switch 17 is positioned on the top of the 35 base 1 adjacent the opening 40 on the front face and this switch 17 has a trigger arm 45 that is activated by movement of the locking bolt. The drive pin 9 is 32737281 (GHMatters) P90098.AU 4/04/12 - 5 entrained for movement parallel to the axis of the bolt in a groove 46formed in the bottom of the base 1. The servo motor 6 drives the bolt 8 back to the open position but the return spring 10 returns the bolt 8 to the operative 5 position as shown in Figure 3. When the RFI fob or card 16 shown in Figure 2, is presented to the front panel 20 of the housing 2 to communicate with the reader 21, the electronic printed circuit board 32 sends a signal to the servo motor 6 to push back the lever 7 and withdraw the 10 locking bolt 8, whilst disengaging the sensor switch 17. With the lock open the RFI lock stays in the unlocked (withdrawn) position until a preset programmed time expires. During this time the LEDs 15 indicate the status of the unit which is in an unlocked state. Once the 15 programed time expires the printed circuit board 32 sends a signal to the servo motor 6 which returns the drive lever 7 to the original "home" position. At the same time, the tension spring 10 pushes the locking bolt 8 to the closed position to engage the micro switch sensor 17. 20 The micro switch/sensor 17 sends a signal to the electronic circuit board 32 which then activates the alarm program stored on the printed circuit board. If an attempt to access the locked area by movement of the locking bolt 8 is made the micro switch sensor 17 is 25 activated which triggers the alarm and the alarm siren sounds until an authorized user of the RFI lock presents the fob or card 16 to silence the alarm. During normal periods of either locked or unlocked state the status LEDs 15 display the relevant status which can be seen through 30 the display 13 on the cover 2. The cover is preferably made of a metal or plastics and the base is moulded in engineering plastics such as nylon or acetyl which provides the strength, flexibility 35 and natural lubricating properties allowing the drive pin 9 to slide in the groove 46 in the base 1. 3273728_1 (GHMatters) P90098.AU 4/04/12 - 6 The security RFI alarm lock described above is a compact efficient lock with an in-built siren with all of the electronics, circuit boards and control mechanisms housed within a secure housing which is secured to the s base in a non tamper proof manner. The lock is sufficiently robust to complete the locking action but is also effectively tamper proof and can only be operated by use of the appropriate RFI fob or card 16. 10 It is understood that the drive of the locking bolt 8 can vary. A rack and pinion drive could be used or a cord on a pulley could be used instead of the lever 7 and pin arrangement shown in the drawings. 32737281 (GHMatters) P90098.AU 4/04/12