AU683207B2 - Security grill - Google Patents

Description

OPI DATE 06/02/91 AOJP DATE 21/03/91 APPLN. ID 59510 PCT NUMBER PCT/AU90/00298 4

PCT

INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (51) International Patent Ciassification 5 (11) International Publication Number: WO 91/00950 SE06B 9/01, 9/02, E05C 9/02 Al (43) International Publication Date: 24 January 1991 (24.0191) S (21) International Application Number: PCT/AU90/00298 (81) Designated States: AT (European patent), AU, BE (European patent), BR, CA, CH (European patent), DE (Eu- (22) International Filing Date: 11 July 1990(11.07.90) ropean patent)*, DK (European patent), ES (European patent), FR (European patent), GB (European patent), IT (European patent), JP, KR, LU (European patent), Priority data: NL (European patent), SE (European patent), US.

PJ 5210 12 July 1989 (12.07.89) AU Published (71) Applicant (for all designated States except US): O'NEILL, With ii? u al search report.

SChristopher, T. [GB/AU]; 1 Jarrah Place, Belrose, NSW /f 2086 e C- h 4*/A m -(9W 2)Applieant-end Inventor:-O, Q,4 -Gheles- [AU/AU]; 2 Diana Place, South Penrith, NSW 2750 (74) Agent: HODGKINSON, Hugh, Rudyard; H.R. Hodgkinson Co., 26A Alfred Street, Milsons Point, NSW 2061

/T

(AU).

(54)Title: SECURITY GRILL (57) Abstract 1 A security grill assembly for an opening including bars (3) adopted to extend across an opening: said bar assembly member comprising a hollow housing a locking slide slidably mounted in the housing an opening (18) in the housing to accept the 3 locking end of the removable member (stud), the stud and the slide having interengageable catch means (19) to secure the stud in the housing when the slide is in a first position and release the stud for removal from the housing when the slide is in a second position, locking means (13) to retain the slide in the first position, said opening (18) also giving access to securement means (11) whereby the housing is able to be secured to a support said securement means (11) being occluded when the stud (3) and bar assembly is in place in the housing f 13 6 A1 See back of page IWo 911009500 PCT/A U90/00298 SECURITY GRILL This invention is concerned with improvements in and relating to security grills and in particular internally mounted removable type for emergency purposes.

Many types of security grills are presently available, but the present invention has been devised to overcome the disadvantages of the type that is fitted onto the outside, preventing access through the opening in case of emergency, access for cleaning and opening the windows. Furthermore, this invention is further devised to overcome the disadvantage of the type having readily accessible connecting means such as visible screws and rivets and the like and to provide an assembly which may be assembled across any existing window or door in which all fastening means are concealed whereby entry through a window or door can only be gained by forcing the security bars. A further object of this invention, is to produce a security grill assembly system that can be mass-produced on a production basis and supplied as a do-it-yourself system. Unlike conventional security grills, which are custom made, fitted onto the outside of the windows, exposed to the elements and therefore require maintenance.

The invention broadly comprises an upper and lower member for securing a number of bars, said lower member comprising a hollow housing, locking slide slidably mounted in the housing, openings in the housing to accept the stud ends of the bars and the slide having interengageable catch means to secure the stud end of the bars in the housing when the slide is in a first position and release the stud for removal from the housing when the slide is in the second position, locking means to retain the slide in the first position, said openings also giving access to securement means whereby the housing is able to be secured to a support, said securement SUBSTITUTE SHEET means being occluded when the studs are in place in the housing.

In one broad form the present invention comprises: a security grill assembly for securing an opening in a structure against unwanted intrusion therethrough, the assembly comprising; first and second support members for fitting against respective opposed surface portions about said openings; bar or tube members which releasably engage and extend between said first and second support members; said first support member including first engagement means for releasably retaining first ends of said bars; said second support member including second engagement means which receives and retains second ends of said bar or tube members and a locking member which moves between a locking state in which said second ends of said bars are mechanically retained by the member and an unlocked state in which the second ends are free of said locking member and are releasable from the first and second support members.

In another form the present invention comprises: a security grill assembly for securing an opening in a structure against unwanted intrusion therethrough, the assembly comprising; i first and second support members for fitting against respective opposed surface portions about said opening; bar or tube members which releasably engage and extend between said S: first and second support members; said first support member including first engagement means for releasably retaining first ends of said bars; said second support member including second engagement means which receives and retains second ends of said bar or tube members and a locking member which moves between a locking state in which said second ends of said bars are mechanically retained by the locking member and an unlocked state in which the second ends are free of said locking member and are releasable from the first and second support members; wherein the locking member is a locking bar and the second support member comprises a housing in which the locking bar is slidably mounted and which includes openings therein which receive said second ends of said bars, said locking bar also having openings which receive said second ends of said bar, wherein when the tubes or bars are locked by the locking member, the locking member at least partially obstructs the openings in the housing of the second support member and when the tubes or bars are not retained by the locking member the locking member is free of the openings in said housing.

The invention in several forms is hereinafter described with reference to the accompanying drawings in which: Fig. 1: is a perspective view of the security grill according to the invention incorporating a locking member and a support member.

Fig. 2: is a cross-sectional view of Fig. 2 when in the locked position.

Fig. 3: is a sectional view of the stud and the method used to fasten the stud into a tube which makes up the security bars.

Fig. 4: is a longitudinal cross-sectional view of the lower hous;ie showing the slide o* member in the open position.

Fig. 5: is a view similar to Fig. 4 but in the locked position.

Fig. 6: is an underneath view of the lower housing showing the locking arrangement in the open position to accept the studs.

Fig. 7: is a similar view to Fig. 6 but in a locked position.

Fig. 8: is a perspective view of the support bolt for the slidably mounted slide.

S IWO 91/00950 PCT/A U90/00298 3 Fig. 9 is a top perspective view of the lower housing showing the bar openings and openings for the slidably mounted slide support bolts.

Fig. 10 is a view of an alternative design for the lower housing formed from an extrusion.

As illustrated, the locking device comprises a locking member 2 and a support member i. The locking member 2 comprises a hollow housing which provides support for the slide 8 said support provided by bolt 4 which fits through hole 23. The bolt 4 has a square shoulder under its head which locates into square hole 23 to prevent rotation during securing of spacer 16 with nut 17. The spacer 16 controls the limit of movement of the slide 8 by a slot means 20 into which a reduced shoulder on spacer 16 fits into. Stud 9 fits through hole 18.

Fig. 6 shows lower housing member 2 in open position allowing entrance of stud 9 into hole 18. Cam 13 on lock 6 rotates cam 13 through an arc providing movement to actuator 14 connected to slide 8 by means of rod 15. Fig. 7 shows lock rotated into the locked position and in so doing slot 19 in slide 8 has moved into the reduced recessed diameter of stud 9 thereby securing stud 9 into the lower housing member 2. The slide 8 is movable between limits determined by the engagement of slots 19 with spacer 16. The movement of the slide is provided by a cam 13 attached to a barrel of a lock, rotatable by locking pins being released by key 5 (in known manner). The slide 8 has keyhole apertures 19 arranged so as to have the larger portion aligned with the holes 18 in the lower housing member 2 when the slide is in the open position as in Fig. 6 and Fig. 4 which shows the cam 13 and its connection to slide 8 via actuator 14.

Looking now at Fig.3, stud 9 is provided with a reduced diameter portion 25 to form a shoulder into which the smallez portion of slide slot 19 engages as it slides through its SUBSTITUTE SHEET WO 91/00950 PCT/AU90/00298 movement of the slide can also be provided by the cam 13 and actuator 14 via rod 15 mounted in the slide.

Upper housing 1 is provided with larger holes to accommodate tube 3 as shown in Fig. 2. Once the slide has been moved to the unlocked position Fig. 4 and Fig. 6 the bar or tube 3 can be moved into and upward into the upper housing 1 clearing the stud 9 from the lower housing surface 2 and removed.

Claims (15)

1. A security grill assembly for securing an opening in a structure against unwanted intrusion therethrough, the assembly comprising; first and second support members for fitting against respective opposed surface portions about said opening; bar or tube members which releasably engage and extend between said first and second support membei s; said first support member including first engagement means for releasably retaining first ends of said bars; said second support member including second engagement means which receives and retains second ends of said bar or tube members and a locking member which moves between a locking state in which said second ends of said bars are mechanically retained by the locking member and an unlocked state in which the second ends are free of said locking member and are releasable from the first and second support members; wherein the locking member is a locking bar and the second support member comprises a housing in which the locking bar is slidably mounted and which includes openings therein which receive said second ends of said bars, said locking bar also having openings which receive said second ends of said bar, wherein when the tubes or bars are locked by the locking member, the locking member at :least partially obstructs the openings in the housing of the second support member and when the tubes or bars are not retained by the locking member the locking member is free of the openings in said housing.

An assembly according to claim 1 wherein the openings in the locking bar receive and retain the second end of said bars, said retention effected by engagement between a recess in S: the bars defined by a stud and an edge of the locking bar thereby effecting aid locking of the bars.

3. An assembly according to claim 2 wherein the housing of said second support •member includes a key actuated lock for actuation of said locking bar.

4. An assembly according to claim 3 wherein the first support member comprises a housing with openings which receive and retain the first ends of the bar or tube members and which oppose in alignment the openings in the first housing.

An assembly according to claim 4 wherein the first and second housings are fixed to said opposed surface portions via fastenings concealed within said housings.

6. An assembly according to claim 5 wherein the locking bar is an elongated plate which advances and retracts in a line substantially parallel to the longitudinal axis of the second support member when moving between the Icking and unlocked modes under the influence of actuation of the lock.

7. An assembly according to claim 6 wherein when said locking bar is in the unlocked mode, the openings therein are in alignment with the openings in the second housing and when in the locked mode are in full or partial misalignment with the openings in the second housing.

8. An assembly according to claim 7 wherein the locking bar includes a plurality of like segments each of which include at least one opening which receives the second end of said bar or tube members wherein each segment has a frangible connection to an adjacent segment enabling adjustment to the length of said bar.

9. An assembly according to claim 8 wherein the lock is a barrel lock which drives a *Ga. cam lock pin upon key actuation, wherein said cam lock pin engages the elongated locking bar in order to effect advancing and retraction of the plate as the key is turned.

10. An assembly according to claim 9, wherein the cam lock pin engages the locking bar via fingers which downwardly depend from the locking bar wherein the locking pin locates between said fingers and upon actuation of the lock urge the locking bar longitudinally along the second support member.

11. An assembly according to any of the foregoing claims wherein the second support member includes opposing channels which each receive at least part of a fastening plate moveable along said channels said plate enabling selective fixation of the second member to S,-1 one of said opposed surface portions of said opening.

12. An assembly according to claim 11 wherein the first and second support members are generally channel shaped and conceal fastening means therewithin.

13. A security grill for fitting in an opening such as a window or the like of a structure; the grill comprising; first and second housing members fitted to respective opposing faces of S said opening; at least one tube or bar member which is releasably retained by said first and second housing members, said first housing member including openings which receive a first profiled part at a first end of said bar members, said second housing including openings which receive and retain a second end of each bar member, a locking assembly comprising a key actuated lock, with a locking pin and a locking bar wherein the locking bar moves between an unlocked mode in which openings in the locking bar substantially align with said openings in said second housing wherein the tube or bar member/s are releasable from said second housing and a locked mode in which the locking bar at least partially obstructs the openings in the second housing at the same time locking said bars.

14. A security grill assembly hereinbefore described and with reference to the accompanying illustrations.

15. A security grill hereinbefore described and with reference to the accompanying illustrations. DATED this 31st day of July, 1997. CHRISTOPHER TIMOTHY O'NEILL s 0 rney BY:. His Patent Attorneys