AU2007214282A1 - Improvements in Locks - Google Patents

Description

FROM AUSTRAlL LOCK PHONE NO. 61396865755 Aug. 27 2007 04:07PM P3 1^ 0 0 ci t Title: Improvements in Locks Summary of the Invention According to one aspect of the invention, there is a lock for a moveable wing defined by an interior and an exterior side, the lock including an engageable means, a casing mountable relative to the interior side, engaging means including at least one engaging arm supported relative to the casing each said engaging arm displaceable to an operative configuration to be engageable with the engageable means to restrain the wing from displacing in an opening direction, operating means to cause each engaging member to displace to and from the operative configuration including a hand operable interior-operating member operably connected by slide means to each engaging member, said slide means comprising at least one displaceable slide and characterised by an operative configuration corresponding to each engaging member being in the operative configuration, the operating means further including a cylinder having a key operable barrel operably connected to the slide means by an angularly displaceable first member, COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AUSTRAIL LOCK PHONE NO. 61396865755 Alug. 27 2007 04:07PM P4 2 0 0 the slide means and each engaging member being displaceable to and from their S. respective operative configurations by operation of the interior-operating member and by operation of the cylinder, the barrel characterized by a pivotal axis that intersects the pivotal axis the first member.

In a second aspect of the invention, the the pivotal axis of the barrel is coaxial 00 with the pivotal axis the first member.

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c In a third aspect of the invention, the lock is configurable by the cylinder to a first locked configuration in which the slide means is in the operative configuration and unable to be displaced from that configuration by the interior-operating member.

O In a fourth aspect of the invention, a slide includes and supports a relatively Ci displaceable sub-slide, said sub-slide being displaceable within the slide between limits comprising an undisplaced position towards which it is biased, and a fully displaced locking disposition that corresponds to the first locked configuration.

In a fifth aspect of the invention, a slide includes a drive recess and the first member comprises a first pinion having a protruding third drive shoulder radially disposed from the axis of rotation of the first pinion, the slides being displaceable to and from the operative configuration by the interior-operating member when the third shoulder is within the drive recess.

In a sixth aspect of the invention, the first locked configuration is characterized by the third shoulder having been displaced to leave the drive recess, In a seventh aspect of the invention, there is an angularly displaceable rocker member having at least one radially disposed arm and wherein the interior-operating member comprises an angularly displaceable member that is connected coaxially to the rocker, the at least one arm of said rocker being connected to the at least one engaging means by the at least one slide.

In an eighth aspect of the invention, there is a control means to restrain each engaging member from being displaced to the operative configuration unless the engageable means and wing are substantially adjacent, said control means including an outwardly biased plunger supported in the casing to be displaceable from a fully extended position in which it simultaneously protrudes from the casing while engaging a slide to restrain the slide means from displacing.

In a ninth aspect of the invention, there is a wing assembly including a lock.

According to another aspect of the invention, there is a lock substantially as described herein with reference to and as illustrated in the acnmnranvinn finins COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM USTRAIL LOCK PHONE NO. 61396865755 ug. 27 2007 04:OPM 3 0 0 The elements relating to the various aspects of the invention claimed within are Z iJentjfed within the specification as follows: where unless the context requires otherwise, "Locks" or variations such as "lock" will be understood to include complete locks for wings and improvements in locks for wings that are transportable into other locks and locking devices without being limited to the complete locks described 00 herein.

"Comprise" or variations such as "comprises" or "comprising" will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers.

0 S* Positional prepositions such as "rear" and "forward" are used to assist in cl description of the some forms and with reference to the accompanying drawings and have in general, no absolute significance "Overlap" and derivations such as "overlaps" implies at least in-part, occupying a same plane as.

"Meshes with" implies engaging with but without free movement in excess of working clearances for example, meshing between an angularly displaceable shaft and a recess in an angularly displaceable pinion means that they both angularly displace together but the shaft may be able to displace longitudinally in relation to the pinion.

'Extent" will be understood to embrace area, form and shape.

Headings are included for convenience only and not to affect on interpretation.

"Preferably" or variations such as "prefer" does not imply that the form of an integer is restricted to that referred to as preferred, but implies acceptable and if need be, able to adequately perform a function required by the inventions in which it is included.

Wing" or variations such as "wings" will be understood to include complete wings and Improvements in wings that are transportable into other devices without being limited to the complete wings described herein; wings embraces in particular "doors", 'windows", "shutters" and "screens".

"Member" is an identifiable entity having material form that may include one or more identifiable components.

"Material" includes elements, alloys, plastics and other substances.

"Aperture" and "recess" embrace a hole that extends from a surface while "aperture" in some contexts implies a hole that extends between surfaces.

COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AIUSTRAIL LOCK PHONE NO. 61396865755 Aug9. 27 2007 04:oePM P6 4 0 0 "Furniture" includes door furniture that includes a "Handle Assembly" that ;Z includes a handle supported by a base that together in one form comprise a disengaging lever supported by a back-plate; "Handle" includes a knob, lever and a disengaging lever; "Disengaging Leve?' includes a lever or knob that is hand operable to cause an engaging member to become disengaged"; "Base" includes a rose that may include a surface mounted member having a recess on the underside; "Back-Plate" (or "back- 00 plate") includes a surface mounted box-like member having a recess on the underside, "Engaging Member" in isolated use, is a member displaceable between a displaced disposition and a fully retracted disposition. When employed with an "Engageable Member", the engaging member is displaceable between an operative Sdisposition (in which the engaging member finds itself when engaged with the engageable member) and an inoperative disposition removed from the said engagement. Within this specification, retracted disposition will embrace the inoperative disposition.

"Engaging" implies displacement of an "engaging member" into engagement with an "engageable member".

S"Disengaging' means withdrawal of the engaging member from engagement "Locking" means the act of configuring the lock to restrain it from being undisengaged and in some forms of locks employing deadlocking slides, it means restraining the deadlocking slide to restrain the bolt from being inwardly displaced in response to operation of the disengaging lever.

"French Door" means a door including a frame and a glass in-fill.

"Screen door" means a door including a frame and an insect restraining in-fill such as fiberglass mesh, woven mesh or perforated metal mesh; and a conventional security door is defined by fitting within an industry-standard door preparation and having a lock casing having dimensions Depth 35 to 45 MM, Width 14.5 to 16 MM and length 147 or 4 MM "Lock Body" includes an engaging member and a lock casing and an Australian conventional security door lock is able to fit within an industry-standard door preparation and has a lock casing having dimensions substantially: Depth 35 to 45 MM, Width 14.5 to 16 MM and Length 147 MM.

"Mortise Lock" means'a lock including a lock body, a strike plate, a pair of handle assemblies and a cylinder where the lock body is configured to be fitted within the frame of the wing.

"Cylinder" or "Single cylinder" means a substantially conventional lock cylinder COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AUSTRA~L LOCK PHONE NO. 61396865755 Aug9. 27 2007 04:09PM P7 0 0

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c comprising a separate sub-assembly that includes a key operable barrel within a cylinder ,housing, Each cylinder in some forms is a substantially conventional pin cylinder having a number of transverse pin chambers in the cylinder housing with each chamber extending from the outer surface of the housing to meet coaxially with a pin chamber in the barrel when the key is removed.

"Cross-Sectional View" in relation to figures should be interpreted as an 00 orthogonal cross-sectional view defined by a plain orthogonal to the axis of the member in consideration.

Patent Specification shall be taken to include: a Body [comprising a Title, a Description of Preferred Embodiment/s, an Abstract and a Summary of the Invention] Sand Claims.

Cl Unless the context requires otherwise, any prior publications and usage referred to herein, is not an assertion that any of this material forms part of the common general knowledge in the art in any other country at the priority date of any claim herein (or the priority date of any future claimed derived at least in part from this specification)- The inventions described within derive, at least in part, from those described in the associated parent application [2007201075 divisional of 51891101] which is hereby included in this application by reference and where unless the context requires otherwise, where an integer is attributed with attributes different from those attributed in the parent application or an associated provisional application, the integer will be considered to be the same integer in a different form; where there is actual inconsistency between the parent and provisional applications or between a provisional application and an earlier provisional application, the latest description will prevail.

The integers described within relate to a) the various aspects of the invention as claimed within, and b) the various aspects of other inventions as claimed in divisional applications derived at least in part from this application.

Detailed Description of Embodiments Consistent with Concepts of the Inventions Some of the inventions claimed within this application are substantially the same as inventions described in the parent application but are distinguished by having casings of lesser width and cylinders not offset relative to the spindle 35. In some forms, the exterior barrel may be inclined relative to the axis of the spindle these changes require other features to be modified so that the elements remain compatible, one such change being the relocation of the slides to underneath the engaging members.

COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AUSTRAL LOCK PHONE NO. 61396865755 Aug. 27 2007 04:09PM P8 6 0 Description of the Drawings SNotwithstanding any other forms that may fall within its scope, one preferred form of the 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 the lock and wing when viewed from the interior of the wing; 00 Figure 2 is a perspective view of the lock and wing when viewed from the exterior Sof the wing; Figure 3 is a perspective view of the lock without the wing; Figure 4 is a perspective view of the interior lock portion of the manual lock with Sthe lid removed; C Figure Figure 6 is an exploded perspective view of the interior lock portion of Fig 4; Figure 7 is an exploded perspective view of the interior lock portion of Fig 4; Figure 8 Figure 9 is a schematic, partial side view of the sub-slide and first pinion when the sub-slide is relatively undisplaced; Figure 10 is a schematic, partial side view of the sub-slide and first pinion when the sub-slide is fully displaced and the third drive shoulder abuts the exit shoulder; Figure 11 is a perspective, partially exploded partial view of the pinions, firstspindle and cylinders; Figure 12 is a perspective view of the interior casing, lid and handle, (having an alternative form but incorporating the features being described in relation to that figure) when viewed from the interior side; Figure 13 is a perspective view of the exterior handle of the manual lock; Figure 14 is a perspective, exploded view of the catch plate, when viewed from the interior and rear: Figure 15 is a schematic side view of the plunger for the self-latching lock.

Figure 16 is an isometric view showing a spacer.

The inventions described within, include an improved lock where each engaging member is moved between an extended, operative position and a retracted, disengaged, position by manipulation of a key or hand operable operating member. These locks may be adapted to become self-latching where each member is moved to the extended position by biasing means and moveable to the retracted position by manipulation of an operating member similarly as some of the locks in the parent application were adapted to provide this alternative functionality. Some of the inventions claimed within this COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AUSTRAL LOCK PHONE NO. 61396865755 Alug. 27 2007 4:09PM F9 1^ 0 0 ci t 7 application have similarities with inventions, described in the parent application but are distinguished by having casings having a lesser width.

The locking means within some forms of the inventions described in the parent application can be represented as below: WITHIN INTERIOR ASSEMBLY Interior cylinder [coupled with free movement with] second pinion [coupled without free movement with] first pinion BETWEEN ASSEMBLIES fcoupled without free movement with] first spindle [coupled with free movement with] WITHIN EXTERIOR ASSEMBLY a profiled aperture in a spindle pinion [coupled without free movement with] offset pinion [coupled with free movement with] exterior cylinder Whereas the corresponding locking means described and claimed within this derived application can be represented as below: WITHIN INTERIOR ASSEMBLY Interior cylinder 718 [coupled with free movement with] first pinion 36 BETWEEN ASSEMBLIES [coupled without free movement with] first spindle [coupled with free movement with] WITHIN EXTERIOR ASSEMBLY T Shaped end 38 of the first spindle [coupled with free movement with] exterior cylinder 12/13 COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AUSTRAL LOCK PHONE NO. 61396865755 Aug. 27 2007 04:10PM 8 0 0 I.e. some of the locks described within this application have an alternative first ;Z pinion [herein called a first pinion 36] that in effect, combines the first pinion and second pinion of the parent and the T shaped end 38 of the first spindle 35, in effect combines the T shaped end 38 and offset pinion of the parent.

Some forms of the locks subject of the claims within, shown in Fig 1 to 4, include features (and integers) similar to those described in the parent application but take a 00 form consistent with the modifications described in this application, including an interior assembly 1 for mounting to the interior surface 2 of a wing and in some cases to a hollow frame element characterized by a hollow portion 2A and an in-fill retaining portion 2B, the lock including an interior casing 3 supporting one and in some forms, Stwo engaging members; an upper engaging member 4 and a lower engaging member 5, and in some forms, a hand operable interior member 6; the engageable means in some forms comprises a catch plate 9 engageable by the engaging members 4 and 5, in other embodiments, the engageable means comprises adaption of the element 10 comprising part of the opening to provide engageable shoulders; mountable to a displaceable wing suspended adjacent to an opening and an engageable means associated with an element defining part of the wing opening such that when the lock body and engageable means are engaged with each other, the wing is restrained from being moved in an opening direction; the wing in some cases comprising a substantially hollow frame supporting an in-fill material such as glass or expanded mesh. An exterior assembly 11, which includes an exterior casing 72 and an exterior cylinder 12 having a key operable barrel 13, and an exterior handle 14 by which the wing can be displaced is attached to an exterior face of the wing.

The interior assembly includes a handle 15 (by which the wing can be displaced is attached to an interior face of the wing) that in some forms comprises a D-shaped handle (shown in parent and Fig 12) while in other forms comprising a substantially elongated box-like hollow member having a rectangular footprint. The interior casing 3 is defined by a front wall 16 disposed towards the catch plate 9, an opposed rear wall 17 an outer side comprising a casing lid 18, shown in Fig 16, to which the handle 15 is integrally connected, an opposed underside 19 adjacent to the interior surface 2 of the frame, an upper wall 20 and a lower wall 21. The interior assembly further includes one and preferably the pair of engaging members, an upper and a lower engaging member 4, 5 respectively, each having a free end 22 with each free end having an engaging element that in some forms comprises a hooked portion 23 but in other embodiments comprises sideways protruding shoulders. Each engaging member has an opposite supported end 24 supported in the casing at a pivotal axis 25 defined by a COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AUSTRAL LOCK PHONE NO. 61396865755 Aug. 27 2007 04!IOPM P11 9 0 0 substantially cylindrical shaft preferably comprising a metal rivet 26, which has passage through, to be supported by, an aperture 27 in the casing, as shown in Fig 6; the rivet being coaxial with the axis of rotation of the engaging member and preferably disposed substantially orthogonally to the surface of the wing. Each engaging member has a slotted recess 28 adjacent to but radially disposed from the pivotal axis 25 which in a first part 29 is substantially radial to the axis of rotation and in a second part o (which may be curved), has an operating portion which is inclined to the vertical when the engaging member is retracted, undisplaced and which is substantially vertically disposed when the engaging member is extended.

Some forms of the lock only requires three through apertures in the wing, a 0 central aperture to provide passage for a first-spindle 35 (Fig 3) to operably connect the N exterior cylinder 12 to the interior assembly 1 and spaced apertures to provide passage for fixing screws whereby an upper fixing screw 93, shown in Fig 12, has clearance passage through an upper aperture 221 in the interior casing 3, through an upper aperture 220 in the wing to engage in an upper threaded recess 222 in the exterior casing and a lower fixing screw 93 has clearance passage through a lower aperture 231 in the interior casing and lower aperture 230 in the wing to engage in a lower threaded recess 232 in the exterior casing, In some forms, the fixing screws and apertures are spaced to comply with an industry standard in Australia, being approximately 125 mm.

In some forms, the apertures are surrounded coaxially by bosses whereby aperture 220 in the wing accommodates bosses 31 and 32 being extensions of the interior and exterior casings respectively, and the lower aperture 230 in the wing accommodates bosses 33 and 34 being extensions of the interior and exterior casings respectively. The fixing screws 93 and have clearance passage through the upper aperture 221 in the interior boss and upper aperture 220 in the wing to engage in an upper threaded recess 222 in the exterior boss and fixing screws have clearance passage through a lower aperture 231 in the interior bosses lower aperture 230 in the wing and wing to pass through the wing to engage in a lower threaded recess 232 in the exterior bosses. In some forms, the fixing screws, apertures and bosses described above are spaced to comply with industry standard spacings in New Zealand, being approximately 82 mm.

In other forms again, the fixing screws, apertures with bosses described immediately above are configured for Australia, but additionally there are additional apertures not surrounded by a boss, wherein there is an upper aperture 225 in the interior casing 3, an alternative upper aperture 226 in the wing and an upper threaded COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM ASTRAL LOCK PHONE NO. 61396865755 Aug9. 27 2007 4:11PM P12 0 0 recess 227 in the exterior casing; and additionally there is a lower aperture 235 in the interior casing 3, an alternative lower aperture 236 in the wing and a lower threaded recess 237 in the exterior casing, these apertures having different spacings and in a Sparticular form, spaced to suit New Zealand.

A interior spacer 240 having a protruding upper boss 31A and a lower boss 33A are received in the apertures 220A and 230A in the wing configured to have 00 different spacings and in a particular form, spaced to suit New Zealand, the interior spacer additionally having recesses 228 and 238 configured to receive the bosses 31 Sand 33 respectively. Similarly an optional exterior spacer 241 may be included having recesses 228 and 328 to receive the bosses 32 and 34, this spacer member having a oprotruding upper bosses 32A and a lower boss 34A that are received in the apertures 220A and 230A in the wing and having associated tapped apertures 227 and 327 to receive the fixing screws; these spacers enabling the lock configured for one region, for example Australia, to be fitted immediately to wings having apertures spaced differently and in a particular form, spaced to suit both NZ.

In some forms, an interior barrel 8 of an interior locking cylinder 7 is supported coaxially and adjacent to a first pinion 36 to be coupled with free movement to the first pinion 36 by at least one (and preferably two opposed) longitudinal protruding drive shoulders of the interior barrel spaced from the pivotal axis of the barrel that extend into kidney shaped recesses in the outer surface of the first pinion (Fig 4, with free space peripherally but only working clearances radially); the first cam having a cylindrical end portion 36B that extends into a circular aperture 3A in the interior casing underside 19 to be angularly displaceable about an axis of rotation orthogonal to the surface of the wing, in some forms the end portion protrudes from the aperture to receive a circlip B The first pinion has on the underside, as shown in Fig 7, a slotted recess 52 in which the first-spindle 35 engages without significant free movement preferably in splined engagement to accommodate a variety of distances between the interior and exterior assemblies.

As shown in Fig 11, the first pinion 36 is coupled to the exterior barrel 13 by a T shaped end 38 on the first spindle 35 that extends sideways to overlap opposed barrel pins 42 described below with which it is coupled with free movement by the opposed longitudinal protruding drive shoulders 42 of the exterior barrel that are each spaced from the pivotal axis of the barrel. In some forms, the axis of rotation of the barrel 13 is orthogonal to the surface of the wing, in other forms it is slightly inclided to dispose the keyway opening further from the catch plate to provide more finger room for key operation. The T shaped end 38 is retained so disposed by being within a cylindrical COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AUSTRL LOCK PHONE NO. 61396865755 Aug. 27 2007 04:11PM P13 11 0 0 recess 38A within a substantially hollow cup member 388 supported in the underside of the exterior casing 72.

The first pinion 36 and first-spindle 35 comprise a directly coupled angularly displaceable first transmission train that is coupled with free movement to a second transmission train comprising the exterior barrel. The first transmission train is characterized by an "undisplaced configuration" corresponding to retracted engaging 00 members and an "operative configuration" corresponding to extended engaging oC N members and a "first locking configuration" also corresponding to extended engaging members. This will be explained below- In some forms, diagonally opposed barrel pins 42 protrude longitudinally from the interior barrel 8 internal end to locate in respective O arcular recesses 43 in the first pinion said recesses being defined by substantially Cl radial shoulders 44 which are engageable by the respective barrel pins 42.

The barrel 8 in the interior cylinder 7 can be rotated from an "undisplaced position" defined as the key removal position, to cause the first transmission train to rotate between configurations and then be returned to the barrel undisplaced configuration because of the free movement.

The exterior barrel 13 and the adjacent T shaped end 38 are configured such that the key can be inserted in the exterior barrel when the barrel is undisplaced, the key and barrel rotated to operate the first transmission train from the undisplaced configuration to the operative configuration and then the key turned a further small amount to lock the lock to the first locked configuration by displacing the sub-slide. The exterior key can then be reversed to the undisptaced barrel position to enable the key to be removed, while leaving the transmission train in the locking configuration. The free movement between the first-pinion 36 and recess barrel 8 and between the T shaped end 38 and exterior barrel 13 are further configured such that if the first transmission train is undisplaced then any movement of the second transmission train towards the operative configuration immediately causes the first transmission train to commence displacing, and if the first transmission train is in the first locking configuration then any movement of the second transmission in an unlocking/disengaging direction immediately causes the first transmission train to commence displacing towards the undisplaced configuration.

Supported within the interior casing, as shown in Fig 4, are two rectilinearly vertically displaceable counteracting slides; an upper slide 45 operably connected to an upper engaging member and a lower slide 46 operably connected to a lower engaging member between which there is an angularly displaceable rocker 47 by which the two slides are coupled so that each displaces equally and simultaneously but in the opposite COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AUSTRAL LOCK PHONE NO. 61396865755 Aug. 27 2007 04:12PM P14 12 0 0 direction. These slide are supported with working clearances between the inside surface of the front walllS and the shoulders 92A surrounding the apertures 92 and between the inside surface 3D of the base and the engaging members. The slides may additionally be supported by vertically elongated finned portions 200 of the casing. The rocker 47 has in relation to its axis of rotation, diagonally opposite arms, a forward protruding rocker arm 48 which straddle the lower slide 46 and a rearward protruding rocker 0 arm 49 which straddles the upper slide 45, the arms being coupled to the respective i adjacent slide by a sideways protruding rocker pins 50 which locate in horizontally elongated slide slot 51 in the respective slide the protrusions preferably comprising cylindrical protrusions having a longitudinal axis parallel with that of the rocker and barrels. The interior-operating member 6 is connected to the rocker 47 by a shaft that N meshes, engages without free movement), in the axial rocker recess 88A the shaft preferably being an extension of a shaft portion of the interior-operating member.

The upper slide 45, supports relative to its outer surface, a relatively moveable spring biased sub-slide 53 that is biased towards an undisplaced position relative to the upper slide by a spring 54. The sub-slide has upper and lower extensions 55, 56 respectively, which locate in slotted recesses 58, 57 respectively in the upper side of the upper slide and by which the sub-slide is supported adjacent to the underside of the first pinion 36 as shown in Fig 4.

In the upper side of the sub-slide disposed towards the first pinion is a cam recess 59 defined by an upper or first drive shoulder 60 and a lower or second drive shoulder 61 between which a third shoulder 63 of the first pinion locates to couple the upper slide and first pinion; and by means of rocker 47 the lower slide as well. In a alternative forms, the upper shoulder comprises part of the upper slide, and the lower drive shoulder comprises part of an alternative sub-slide that is relatively displaceable against spring biasing.

Because of the coupling, the upper slide, from a nominal undisplaced position corresponding to retracted engaging members, can be displaced by cylinder (or interioroperating member) operation to a position corresponding to the operative configuration with extended and deadlocked engaging members. While unlocked, the first transmission train, ("first train'), can be angularly displaced to cause the upper slide, to cause the rocker 47 to cause the lower slide to displace and to cause the interior operating lever to correspondingly rotate; and the interior-operating lever can be angularly displaced to cause the rocker to rotate to cause the upper slide and lower slide to displace and to cause the first train to correspondingly rotate so the first train is COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AUSTRAL LOCK PHONE NO. 61396865755 Aug. 27 2007 04:12PM 13 0 0 moveable in either angular direction, towards and from the operative configuration by either a key or the interior-operating lever.

When the lock is in the operative configuration, as shown in Fig 4, the first train can be further displaced in a locking direction to displace the sub-slide relative to the upper slide (against biasing derived from compression spring 54) while the upper slide remains substantially unmoved, to lock the lock into the first locked configuration this 00 can be done by turning the key in either cylinder.

In some forms the sub-slide 53 can only be displaced against the spring a predetermined distance relative to the upper slide, this distance being defined by a shoulder portion adjacent to the recess 57 that acts as a sub-slide stop. Configured such that only when the upper slide is fully displaced downwardly to the operative configuration and the N sub-slide has been displaced to be adjacent to the sub-slide stop can the shoulder 63 be rotated to depart from the recess 59 between the drive shoulders 60 and 61. In some forms the spring is replaced by a solid member and the sub-slide cannot be displaced in this case, the lock is always operable by the interior operating member.

In this locked configuration, there is no operable coupling between the first train and the interior-operating member cannot be rotated to cause the upper slide to rotate to cause the rocker and first pinion 36 to rotate. In this locked configuration the upper slide is rendered immovable by shoulder 63 having been displaced from between the drive shoulders 60 and 61 to slide over an arcular exit shoulder 62 of the sub-slide the surface of which then lies substantially orthogonal to the pivotal axis of the first pinion (Fig 10). In this configuration a leading edge 64 of the shoulder 63 comprising an arcular edge, (with respect to the axis of rotation of the first pinion), abuts the exit shoulder having been displaced from between the drive shoulders to slide over the exit shoulder 62 without moving the support slide. Attempted displacement of the upper slide upwardly causes the sub-slide to be urged upwardly to cause the surface of the exit shoulder to exert a force on the shoulder 63 which is defined by a vector passing through the pivotal axis of the first pinion without giving rise to a moment on the first pinion.

The upper slide 45, as shown in Fig 4, extends from the rocker 47 to connect to the upper engaging member 4; the lower slide 46 extends from the rocker 47 to connect to the lower engaging member 5. Each slides has a sideways protruding slide pin that locates in a slotted recess 28 in the associated engaging member the pin and slotted recess being coupled in cam-follower relationship.

As each slide pin displaces the associated engaging arm to the extended position, it slides within the first part 29 in a manner defined by a slide-follower relationship. When the engaging members are in the fully extended positions, (in a COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AUSTRAL LOCK PHONE NO. 61396865755 Aug. 27 2007 04: 13PM P16 14 0 0 preferred embodiment disposed 90 degrees to the side of the interior casing), the slide pin displaces further to deadlock the engaging member in which position the slide pin abuts the operative portion of the second part 30 of the slotted recess which is then vertically disposed. The significance of the operative portion being vertical when the engaging members are extended is that attempted rotation of the engaging arm from the extended position causes the recess 30 wall to exert a horizontal force on the slide pin 0 which is resisted by a wall of the interior casing and rotation of the engaging member is i prevented, the arrangement in effect separately deadlocking the engaging member.

In a preferred embodiment the engaging members, have drive portions 66 mirror images about a horizontal line through the first pinion, these portions including the recesses 28.

ci Preferably, the interior assembly includes a detent including an inwardly displaceable elongated plunger 67, as shown in Fig 4 to 7, supported by a hollow cover and biased a by spring 70 which abuts an end wall 67A of a spring recess within the plunger and which also abuts and end wall 67B of a hollow cover member 67C, as shown in Fig 5 that includes a horizontally elongated recess 67D within which the plunger is supported. The plunger has a side protruding shoulder 68, which can locate under and outwardly disposed shoulder 69 in the upper slide to restrain the upper slide from displacing downwardly from the position corresponding to retracted engaging members. The lock is configured such that when the upper and lower slides are undisplaced, i.e. the engaging members are retracted, the plunger protrudes from the interior casing while the shoulder 68 is beneath shoulder recess 69 restraining the upper slide and therefore restraining the directly coupled further mechanism from being displaced from the undisplaced configuration. Depression of the plunger, through engagement with the catch plate as the wing is closed causes displacement of the shoulder 68 from the shoulder 69 enabling the slides to be displaced.

The engaging members are configured so that they move simultaneously in opposite directions and in the direction of the hooks. In a preferred embodiment they move towards each other and the hooked portions move towards each other to be engageable behind shoulders of the catch plate.

The exterior second assembly, as shown in Fig 11 and 13, preferably comprises a hollow shaped exterior casing 72 of which the exterior handle 73 is an integral part as are the fixing bosses 32 and 34 are configured as extensions of casing 72; the casing 72 is further configured to include aperture 81 into which the head of barrel 13 protrudes to be accessible. Supported within the hollow portion is the cupped shaped cover COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AUSTRAL LOCK FROM PUSTRPL LOCK PHONE NO. :61396865755 u.2 070:1P t Aug. 27 2007 04:13PM P17 member 38B in whose axial recess 38 is supported the T shaped end 38 of the first spindle 35. This cover member 38B also acts to retain the exterior cylinder within a mating shouldered cylinder recess within the hollow, the cylinder recess in some forms defined in part by an axis orthogonal the face of the wing, in other forms it is inclined generally away from the catch plate to provide more room to operate the key.

The interior lock, as shown in Fig 12, preferably comprises a hollow lid portion 18 having an upper and a lower inwardly protruding boss 91 each locating in a 00 shouldered recesses 92 in the interior casing 3 that in some forms are located substantially co-axially with the fixing screws 93. The shouldered recess 92 and the boss 91 are together intersected by a transverse recess 94 through which a transverse screw 95 has passage to fasten the boss 91 within the recesses 92 by which it is preferably surrounded. When the wing is closed these screws 95 is inaccessible. The boss 91 preferably comprises a horizontally elongated protruding oval blade.

Preferably the handle 15 comprises an outer portion generally hollow in form and to which handle back 98 which is attached by screws 99 to the outer portion.

Where either cylinder is omitted, exteriorly or interiorly, a plug is preferably employed to occupy the cylinder space:, to protect the associated pinion from tampeing, to support the pinion, and to improve the appearance which otherwise would be compromised by a visible aperture. Supported between the first pinion and the lid portion within a cylinder recess in the lid portion 18, is the exterior cylinder 12. The cylinder recess connects to a barrel aperture 97 in the wall of the lid through which the heed of the interior barrel 8 protrudes to be accessible.

Each slide in some forms, is biased by a compressed compression spring 100, as shown in Fig 4, held compressed by being retained between the end 102 of the slide and a shoulder 101 of the case 3. In some forms, the spring 100 is supported about a follower 103 having at one end a return 104 that is within an aperture 105 in the side of the slide while the other end extends through a slotted aperture 107 of the shoulder 101. Adjacent to return 104 follower 103 has a shoulder 108 and the spring is supported between this shoulder 108 and the shoulder 101. The mechanism is configured such that when the slide is half way between its undisplaced and fully displaced configurations, the follower 103 is substantially orthogonal to the locus of movement of the slide, this mechanism acting to urge the slide towards its extreme outwardly disposed or inwardly disposed limits of displacement;, in so doing, acting as an overcentre device. Each slide is preferably so biased.

COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM AUSTRAL LOCK PHONE NO. 61396865755 Aug. 27 2007 04: 14PM P18 16 0 0 The catch plate 9, as shown in Fig 14, has a forward wall 101 disposed towards the front edge of the interior assembly with openings 102, as shown in Fig 3, to provide 4passage for the engaging members to recesses 103 into which the hooked portion of the engaging arm extends. The catch plate preferably comprises a vertically elongated catch casing 104 which supports a forward wall comprising a separate channel 105, restrained relative to the casing by two spaced springs 106 located between the catch casing and channel. There are two spaced vertically elongated apertures 106 in the channel through l which headed fasteners preferably comprising screws 107 have passage to attach the channel to the catch casing by engaging in threaded apertures 108 in the catch casing.

Screws 107 are adjustable in and out to selectively set the distance between the channel and catch casing as is required and to accommodate small deviations in the Nwing 2 and element The catch casing can be attached to the element defining the wing opening in two different ways: screws 109, including the head can be passed through apertures 110 in the channel to be inserted in vertically elongated first fixing apertures 111 in the catch casing to be fastened to the element 10 the catch plate being vertically adjustable because of the elongation of the fixing recesses. Alternatively, screws 112 may be passed from the outer face of the catch casing through vertically elongated second fixing apertures 113 in the catch casing to be fastened into element 10 -the catch plate again being vertically adjusted because of the elongation of the fixing recesses.

After fixing, plugs 114 are inserted within the second fixing apertures. Each second fixing aperture is intersected by transverse apertures 115 commencing at the front edge of the catch casing and support a grub screw 116 which threadedly engage the walls of the recesses. After the insertion of each plug the grub screw is tightened to bite into the plug to retain the plug in the second fixing recesses to render the screw 112 inaccessible.

At each end of the channel is an end shoulder 117 overhanging the recesses 103 to provide in-part a forward wall of the recess 103 and by so doing providing a counterlevered engageable shoulder behind which the hooked portions 23 of the engaging member can locate so that the hooked portion cannot be withdrawn horizontally from behind the shoulder 117 this action corresponding to attempted forced entry.

Preferably the channel comprises an elongated steel channel or a single zinc diecast member. Preferably the casing comprises a single casting to provide increased strength. Preferably the casting comprises a substantially elongated first plate-like portion 118 integrally attached at right angles to another substantially second elongated COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27 FROM FUSTRAL LOCK PHONE NO. 61396865755 Fug. 27 2007 04:14PM P19 17 0 0 N plate-like portion 119 (corresponding in this embodiment to the base of the casing), each t providing for the other a web-like portion to resist bending of the catch casing.

As well as adjustment through elongation of the fixing holes, further adjustment is provided through elongation of the apertures 106 whereby the channel is vertically adjustable up and down from a nominal central position relative to the catch casing. So as the engaging members move to the extended position one of them would contact a 00 shoulder 117 of a misaligned channel and move the channel to be vertically aligned with l c the engaging members. The springs 173 then maintain the channel relative to the catch casin Configurations, which will be used most commonly employed (but to which this O invention are not limited) are as described below: lCi Manual Lock An interior and exterior cylinder without an interior-operating member, each being operable to displace the lock to and from the operative configuration and each being key operable to lock and unlock from the first locked configuration.

A single, exterior cylinder and interior-operating member, each being operable to displace the lock to and from the operative configuration, the cylinder also being key operable to lock and unlock from the first locked configuration.

An interior-operating member and no cylinders, the member being operable to displace the lock to and from the operative configuration.

A single, interior cylinder, the cylinder being key operable to displace the lock to and from the operative configuration and to lock and unlock the lock from the first locked configuration.

COMS ID No: ARCS-158449 Received by IP Australia: Time 14:37 Date 2007-08-27