AU657386B2 - Security device - Google Patents

Description

657386 Regulation 3.2

AUSTRALIA

PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT

ORIGINAL

s r o o o 0 Name of Applicant: Actual Inventors: MICHAEL BOLTON and DEAN TIPPETT MICHAEL BOLTON Address for Service: Invention title: R K MADDERN ASSOCIATES, 345 King William Street, Adelaide, South Australia, Australia "Security Device" Details of Associated Provisional Application No: PL 0440 dated 17th January 1992 The following statement is a full description of this invention, including the best method of performing it known to us.

1 This invention relates to security devices and in particular to security lock devices used to inhibit the unauthorised opening of doors, windows and other access means to buildings and other places.

BACKGROUND

Doors and windows are common entrance points for thieves, burglars and other unauthorised persons when goods and valuables are to be stolen from homes, offices, caravans and other places.

There exist many types of security devices such as barrel type locks including deadlocks, bolts and padlocks, which are 15 suitable for securing doors and windows to the surrounding oeoo framework of the building.

o*o: These forms of security lock, by themselves, do provide a deterrent to unauthorised access. However, it is also known that the value of the deterrent effect is lowered if the door or window or wings, as they are also generically referred to herein, to which the security lock is attached, are of a poor or flimsy construction. In this situation the door itself for 9*° S example a fly-screen door rather than the lock becomes the 25 weakest point in the security of the home or building.

.:.io Beyond the broken security of an external fly-screen door the householder will have sometimes left the inner door unlocked, thereby, assuring easy access to the unauthorised intruder.

Therefore, it is an aspect of this invention to overcome the problem described and provide a means which can make fast, outer access doors, windows and the like, moveable inner access doors, windows and the like so as to improve t4& security of those types of building accesses.

2 BRIEF DESCRIPTION OF THE INVENTION In its broadest form the invention comprises a security lock for securing together two articles, a first one of said articles having an aperture therethrough, wherein said lock comprises a bridging member having an elongate body portion sized to pass through said aperture and an enlarged portion sized such that it does not pass through the aperture, and an engagement means attachable to said second article and adapted to engage with the body portion of said bridging member, such that when the body portion of said bridging member is inserted through the aperture in the first article and engaged with said engagement means, the first and second articles are fast with respect to each other and restrained 15 from movement in any direction with respect to each other.

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4 9 20 9 9 49 .9 9 999999 99999 In a further aspect of the invention the first article is a moveable wing located internally of a building.

In yet a further aspect of the invention the other article is also a moveable wing located on the outer side of the first aiticle.

In an aspect of the invention the engagement means is a recess in the second article having a thread on its inner surface adapted to threadingly engage with a thread of complementary shape on the body portion of said member.

In a further aspect of the invention a lock means is adapted for engagement with said bridging member at its enlarged portion end to secure the bridging member against its disengagement with said engagement means.

In yet a further aspect of the invention, a cover means is provided and adapted to encapsulate the bridging member at its enlarged portion end, said cover means also being adapted to be releasably engageable and lockable to the article adjacent the enlarged portion of the bridging member to secure the bridging member against unauthorised movement and 3 disengagement with the second article.

Another aspect of the invention comprises a security lock for securing together two moveable wings, a first of said wings having an aperture therethrough and being located internally with respect to the second of said wings, said wings being adapted to movably close an access to the building or other place to which they are operatively attached, wherein said lock comprises a bridging member having an elongate body portion sized to pass through said aperture and, said bridginlg member having an enlarged portion sized such that the enlarged portion does not pass through said aperture and which abuts the said first wing when in use, and an engagement means attached to the second of said wings adapted to engage with the elongate body portion of said bridging member such that when the elongate body portion of said S bridging member is inserted through said aperture in the first article and engaged with the said engagement means the first wing is made fast with the second wing and said wings .20 are restrained from movement in any direction with respect to each other.

0000 0. c 00 0 *Oo@ .000 *0 0.~ 000 .0 c 0 00 000 0 @0 0 00 0 *o 2 000000 BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail, by way of example only, with reference to the accompanying drawings in which: Fig 1 depicts a security lock arrangement as applied to the fastening of two doors shown in section view; and Fig 2 depicts a top plan view of the security lock arorangement as applied to the fastening of two doors.

DETAILED DESCRIPTION OF THE EMBODIMENT In order that the invention may be clearly understood reference will now be made to an example of an arrangement of elements which depict the principles of the invention.

4 However, these elements do not depict the only way of implementing those principles.

Throughout this description like numerals will be used to identify like elements depicted in each of the Figs.

In our example two doors an outer door 10, typically a flyscreen door, and an inner door 11, typically a timber or timber veneer door are shown in section view and spaced apart as they would be if they were fitted to a doorway of a house.

It will be apparent that the depiction of doors 10 and 11 could also equally be a depiction of windows or that one or other of the articles is fixed, that it forms a permanent part of the framework of the house, building or other place. The generic term wings will be understood to include doors and windows which are referred to in respect of the examples given in this explanation of the invention.

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It will also be apparent that a building is one example of a construction which has moveable wings which are preferably secured using the invention, whereas caravans which are not o strictly a building are another example of a construction upon which there are moveable wings to which the invention could be applied.

o* o In this example, an aperture 12 is located in the inner door 11 to allow a bridging riember 13 to pass its elongated body portion 14 therethrough. The body portion is preferably long 30 enough to extend from the inside wall 15 of the door 11 to at least a body portion engagement means attached to the outer door 10, which in this embodiment comprises a recessed and captured nut 16 to engage the threaded body portion.

The body portion 14 of this embodiment comprises a threaded shaft which needs to be, for a predetermined separation distance between doors, threaded only along a portion of its end nearest the captured nut 16. Otherwise, for convenience when installing between doors of varying separation, the 5 threaded portion should extend along the full length of the body portion 14.

The full length of the body of the bridging member 13 is selected so that the end of the body portion located internally of the outer door 10 does not interfere with the inside surface of the outer wall 17 of the outer door 10. A universal sized bridging member 13 may be cut to the appropriate length during the process of installation.

The engagement means comprises a captive nut 16 shown located inside the door 10. However, various other engagement means could, be placed external of the door 10 on the adjacent door 11. The arrangement depicted is more likely to be visually acceptable to the householder, since the only visible ~evidence of the security device being fitted are the outer door plates 18 and 19. The plate 18 is contoured about the aperture to guide the bridging member in to the captured nut 16. The aperture 20 in the outer door 10, used for attachment of the bridging member, is only visible to visitors when the outer door 10 is opened.

i* The engagement means is attachable to the outer door 10 by way of bolts 21 and 22 which have smooth heads 23 and 24 on the outer wall 17 of the outer door, and nuts 25 and 26 located on the inner face of plate 18. The plate 18 incorporates by any suitable means, but, preferably by welding, the nut 16 in svuch a manner that the nut does not rotate when being engage. with the bridging member.

A cavity 27 is provided in the outer door 10 to accommodate the threaded end. of the body portion 14.

Plates 28 and 29 are attachable to the inner door 11 and provide in the case of plate 28 a firm surface for the abutment of an enlarged portion 30 of the body portion 14 of the bridging member.

6 Each of the plates 28 and 29 have apertires 31 and 32 (not shown) which are horizontally separated and have coaxial axes. These apertures are sized, as is the body portion of the bridging member 13 to allow the body portion to be inserted therethrough.

Aperture 32, however, is sized as is the enlarged portion such that the enlarged portion cannot pass through the aperture and when firmly in place may abut the inner face 33 of plate 28.

Plates 28 and 29 are attached to the inner door by any convenient means. In this embodiment woodscrews are shown.

The end of the bridging member 13 shown on the left of the ~inside wall 15 of the inside door 11 is depicted having a.

hook shape. However, this end of the member 13 may have any shape which is suitable for assisting the user to firmly and conveniently engage the body portion with the engagement means.

In this embodiment repeated turning motion to threadingly 9 engage the body portion with the captured nut 16 is required.

An alternative coupling and engagement means may only require .25 a half or quarter turn to effect the engagement of the g*9** bridging member with the engagement means or a firm pushing 9 action of the bridging member towards the outer door 10 may suffice dependent upon the form of the engagement mechanism.

Referring now to Fig 2 the two doors 10 and 11 are depicted in plan view, showing the adjacent wall sections 34.

Both doors are hinged in the conventional manner to wall section 34 by hinges shown at 35 and 36 so that door 10 opens in the direction of arrow 37 and door 11 opens in the direction of arrow 38 when they are free to do so.

When the elements of the security device 39 are fitted as depicted and the device fastens the two doors 10 and 11 7 together, the doors in combination form a barrier of considerable strength. The combination of their joined bulk, joint fastening devices (locks etc. not shown) and hinged sides creates a parallelogram shaped structure of greater strength and resistance to forced attempts to access the building than that of a single door.

It will be apparent that the same principle can be applied to two windows, to a single door and a frame, to a single window and a frame, and furthermore the principle may be used to fasten together two doors in a similar configuration to that which is depicted in the embodiment, however, the doors are located inside a building between two rooms.

Fig 2 also depicts a cover means in this embodiment a single open ended box 40 engagable with the door 11 with engagement

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Smeans 41 and lockable thereto by lock assembly 42 and post 43. This additional form of security prevents unauthorised manipulation of the security lock as long as the security of tO the lock assembly 42 is maintained. In a typical application of the cover means, the security lock could be arranged to be fitted so that the bridging member is inserted into an aperture in the outside door and engages with the inside door *fe.

as the occupants of the building leave, therefore, the cover and lock assembly provides security for the security lock from unauthorised manipulation.

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Furthermore, an alternative to the cover means is a lock means adapted for engagement with the bridging member to secure the bridging member against its disengagement with the engagement means on the said second article.

Having now fully described the invention, it will be apparent to one of ordinary skill in the art that many changes and modifications can be made thereto without departing from the spirit or scope of the invention as set forth herein.

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Claims (6)

1. 2. A security lock according to claim 1 wherein said first article is a moveable wing located internally of a building.
2. 3. A security lock according to claim 1 wherein said second article is a moveable wing located adjacent said first article.
3. 4. A security lock according to claim 1 further comprising a lock means adapted for engagement with said bridging member at its enlarged portion end to secure the bridging member against its disengagement with said engagement means. A security lock according to claim 1 further comprising a cover means adapted to encapsulate said bridging member at its enlarged portion end, and said cover means also being adapted to be releasably engageable and lockable to the article adjacent the enlarged portion of the bridging member to secure the bridging member against unauthorised movement and disengagement with said second article.
4. 6. A security lock according to claim 1 wherein said body portion of said member has a portion of its length which is 9 threaded, and said engagement means comprises a recess in the second article having a thread on its inner surface adapted to threadingly engage with said body portion.
5. 7. A security lock for securing together two moveable wings being adapted to movably close an access to the building or other place to which they are operatively attached, wherein a first of said wings has an aperture therethrough and said first wing is internal with respect to the second of said wings, wherein said security lock comprises: a bridging member having an elongate body portion sized to pass through said aperture, and said bridging member having an enlarged portion sized such that the enlarged portion does not pass through said aperture and which abuts 15 the said first wing when in use, and an engagement means attached to the second of said wings adapted to engage with the elongate body portion of said bridging member such that when the elongate body portion of said bridging member is inserted through said aperture in the 20 first article and engaged with said engagement means the first wing is made fast with the second wing and said wings are restrained from movement in any direction with respect to each other. 0000 :C. *00 S O 0, 0 50 0 ,gO S~~o .00 '00 *OS 000 CO 0r 5 0 5* C 5 00 So 0* 00 S 500000 25 8. A security lock according to claim 7 wherein said bridging member has an engagement member adapted to engage with an engagement member attached to said first wing.
6. 9. A security lock substantially as hereinbefore described with reference to and as illustrated in the accompanying Figures 1 and 2. Dated this 12th day of December 1994. MICHAEL BOLTON and DEAN TIPPETT By their Patent Attorneys R K MADDERN ASSOCIATES 10 ABSTRACT A security lock is provided which is particularly suitable for securing two doors together which when in their fast arrangement make access through the doorway very difficult. Two face to face adjacent doors (10, 11), one having an aperture (12) therethrough and the other having an engagement means (16) thereon are made fast with one another by insertion of a bridging member (13) through the aperture (12) and then being engaged with the engagement means (16) on the second door. The bridging member (13) has an enlarged portion (30) thereon which can not pass through the aperture and the bridging member (13) is adapted to engage with the engagement means (16) of the other door, thereby fixing 'che doors together. The enlarged portion (30) of the bridging member (13) may be shaped so as to facilitate the easy turning or twisting of the bridging member so that the engagement of the member with the engagement means is made easy for the user of the 20 apparatus. O*