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(21) Application Number:KElP/ 2006/ 000483
       
(22) Filing Date:04/04/2006

(73) Owner:JOHN ALFRED MUTUMA MUGAMBI of P.O. Box 39525-00623,Nairobi, Kenya

(72) Inventor:JOHN ALFRED MUTUMA MUGAMBI of P.O. Box 39525-00623, Nairobi, Kenya
       
(54) Title:  DOUBLE LOCKING SECURITY FLAP

(57) Abstract:A Double Locking Security Flap fig. I (TYPE 'A') and fig. 2 (TYPE B'), where TYPE 'A' consists of a hinged rectangular tube (fig.l, I) inside which the locking hasp ann (fig.l, 5) slides against a spacer (fig.!, 7) to reduce play and a spacer (fig,1.13) at the bottom ensures sliding fit movement of the botton locking bolt (fig.!, 4). The locking hasp ann is joined to a linking rod (fig.!, 2).

Whereas TYPE 'B' consists of a tube (fig. 2, I and fig.3, 2) mouoted on a hinged flat bar (fig 3, 1). An upper rod (fig. 2, 3) slides inside the tube and is connected to a locking hasp arm (fig. 2, 5) and the other side is connected to a linking rod (fig. 2, 2). Both ends of the tube have dimples (figs 2, 7) pressed to reduce sliding play.

Lower ends of linking rods of both types are connected to the bottom locking bolts (fig.!, 4 and fig. 2, 4). Both tube types, have oil cups fitted (fig. I ,8 and fig. 2, 8) and linking rods Pass through them spreading oil to other sliding components and also pass through helical springs (fig. I, 6 and fig, 2, 6) anchored at the lower sections of both tubes. The springs normally push lightly the locking mechanisms upwards to uolocked position compressing to 10% of their lengths.
 
Title:    DOUBLE  LOCKING  SECURI1Y  FLAP
ABSTRACT: A Double Locking Security Flap fig. 1 (1YPE 'A') and fig. 2 (1YPE 'B'), where

5 1YPE 'A' consists of a hinged rectangular tube (fig.1, 1) inside which the locking hasp arm (fig.1, 5) slides against a spacer (fig.1, 7) to reduce play and a spacer (fig.1, 13) at the bottom ensures sliding fit movement of the bottom locking bolt (fig.1, 4). The locking hasp arm is joined to a linking rod (fig.1, 2).

10 Whereas 1YPE 'B' consists of a tube (fig.2, 1 and fig.3, 2) mounted on a hinged flat bar (fig.3, 1). An upper rod (fig.2, 3) slides inside the tube and is connected to a locking hasp arm (fig.2, 5) and the other side is connected to a linking rod (fig.2, 2).
Both ends of the tube have dimples (fig.2, 7) pressed to reduce sliding play.
15 Lower ends of linking rods of both types are connected to the bottom locking bolts (fig.1, 4 and fig.2, 4). Both tube types, have oil cups fitted (fig.1, 8 and fig.2, 8) and linking rods pass through them spreading oil to other sliding components and also pass through helical springs (fig.1, 6 and fig.2, 6) anchored at the lower sections of both
20    tubes. The springs normally push lightly the locking mechanisms upwards to unlocked position compressing to 10% of their lengths.

Field of the Invention

5    The present invention relates to a Double Locking Security Flap constituting a locking   
       
    mechanism built upon the conventional flap (flat or angle-bar) design to provide a   
    more efficient and more secure locking methods utilised as re-enforcements for shelves,   
    chests, steel or wooden cabinets etc in offices, banks, factories and homes.   
10       
    Description of Prior Art   

The use of the cabinet re-enforcement locking devices have been known in the prior art. More specifically, locking facilities heretofore devised and utilised for the purpose of

15    security re-enforcement locking devices are known to consist basically of familiar simple round bars and hinged flat bar or angle bar designs.

In this respect, the prior art exhibits a technical shortfall in locking processes.
The present invention substantially departs from the conventional concepts and designs
of prior art, and in doing so provides a device primarily developed for an effective
20    locking purposes in re-enforcing cabinets, shelves and chests.   
       


Objective of the Invention
25

It is generally accepted that a steel filing cabinet for example, is not quite secure with the in-built cabinet lock without an additional effective security re-enforcement. As an effort to make the filing cabinet more secure therefore, solid metal bars have been used. Unfortunately these metal bars which normally have to be removed and kept aside are

30    not only nuisance when they fall on the floor making a lot of noise but are also a bother where office ceilings are low because the bars have to be pulled upwards to withdraw them from their lockers.

Hinged flat bar or angle bar flaps have also been fitted to the steel filing cabinets and
are in use. But the problem with these flaps is that they have one single padlock-locking

35    provision at the top of the cabinet. This single locking facility is inadequate because with simple tools like pliers, one can easily twist the bottom of the flap and hence open the lower cabinet drawers, unless two padlocks are used, one at the top and the other at the bottom, which is cumbersome.

It can be appreciate therefore, that there exists a continuing need for new and improved 40 cabinet re-enforcing devices.

The double locking mechanism in the present invention, on the other hand makes the flap very effective because it locks a cabinet at the top and at the bottom simultaneously with only one padlock positioned at the top. This is an effective way of locking securely shelves, chests, steel or wooden cabinets etc in offices, banks, factories and homes.
45    In this regard, the present invention fulfils this need.

An object of the present invention is to provide a better locking mechanism that overcomes the shortcoming of the prior art by ensuring an effective re-enforcement device. Still yet another object of the present invention is to provide new and improved locking mechanism with advantages that overcome the shortcomings that are normally
so    associated with the prior art.

Summary Of The Invention

In view of the foregoing disadvantages inherent in the known types of cabinet security

5    re-enforcement devices now present in the prior art, the present invention provides an improved locking mechanism. AB such, the general purpose of the present invention, which will be described subsequently in greater detail, is to provide a new and improved locking mechanism and method which has all the advantages of the prior art.

10 To attain this, the present invention essentially comprises a double locking security assembly where Fig.l and fig.2 are shown as two types only differing slightly.

1YPE 'A' consists of a rectangular tube to which two hinges are mounted near both ends of the tube and the length of the locking hasp arm is guided and slides against a spacer fixed inside the hinged rectangular tube to offer minimum play. Another spacer at the

15    bottom of the hinged rectangular tube reduce play and therefore providing sliding fit movement of the bottom locking bolt. The end of the locking hasp arm is joined to a linking rod below the upper spacer.

Whereas, 1YPE 'B' consists of a tube mounted to a wide hinged flat bar. The tube houses or guides a double locking mechanism consisting of a linking rod to which one

20    end is connected to a upper rod which slides inside the tube and which is further connected to a locking hasp arm and to a finishing cap. The other side of the linking rod is connected to a bottom locking bolt.

Both ends of the tube have each dimples pressed to reduce inside diameter of the tube to
    lessen sliding play and therefore providing sliding fit movement of the upper rod and
25    bottom locking bolt.
    Double Locking Security Flap incorporates a double locking mechanism fixed on the
    hinged flat or hinged rectangular tube and as the hinged flat/tube swings around, the
    locking mechanism swings around with it needing the support of the hinged flat/tube to
30    bring it to the locking position.
    At the locking position, the locking mechanism is aligned to the locking mode and when
    pushed down against the spring action, via the locking hasp arm, the hasp engages the
    padlock wasp (fig-4, 1 and fig.s, 1) and the bottom locking bolt enters into the hole in the
    lower bracket fixed to the body ofthe cabinet (fig-4, 2 and fig.s, 2) and padlocking is
35    done at the wasp on the top of the cabinet.
    During the unlocked mode, when the padlock is opened and removed, internal springs
    spring up pushing both the bottom locking bolt and the top locking hasp arm up from
    their locking positions and the locking system is thus maintained at the open or
    unlocked position until and during the locking process when the unit is again pushed
40    down via the locking hasp arm.

There has been outlined, rather broadly, the more important features of the invention
    in order that the detailed description thereof that follows may be better understood and   
    in order that the present contribution to the art may be better appreciated. There are, of   
45    course, additional features of the invention that will be described hereinafter and which   
    form the subject matter of the claims appended hereto.   
       

In this respect, before explaining at one embodiment of the invention in detail, it is to be understood that the invention is not limited to in its application to the details of manufacture and to the arrangement of the components set forth in the following description or illustrated in the drawings. The invention is capable of other

50    embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting.


5 As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based, may readily be utilized to improve on the present invention. It is important, therefore, that the claims be regarded as including such improvements insofar as they do not depart from the spirit and scope of the present invention.

10 Further, the purpose of the foregoing abstract is to enable the Kenya Patent and Trademark Office and the public generally, and especially the engineers in the art who are not familiar with patent of legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The abstract is neither intended to define the invention of the application, which is

15    measured by the claims, nor is it intended to be limiting as to the scope of-the invention in anyway.

These together with other objects of the invention, along with the various features of novelty which characterize the invention, are pointed out with particularity in the claims

20    annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and the specific objects attained by its uses, reference should be had to the accompanying drawings and descriptive matter in which there is illustrated preferred embodiments of the invention.

25

Brief Description Of The Drawings

The invention will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description
30    thereof. Such description makes reference to the annexed drawings wherein:

FIG.t is a perspective illustration of the preferred embodiment of the new Double Locking Security Flap assembly, a TYPE 'A' configuration constructed in accordance
with the principles of the present invention.
35
FIG.2 is a perspective illustration of the preferred embodiment of the new Double Locking Security Flap assembly, a TYPE 'B' (fig.3, 2) configuration, a variation of TYPE 'A', a unit mounted onto a hinged flat bar (fig.3, 1), constructed in accordance with the principles of the present invention.
40

FIG.3 is a side view of a Double Locking Security Flap assembly profile fixed to a steel filing_cabinet -TYPE 'A'.

FIG.4 is a side view of a Double Locking Security Flap assembly profile fixed to a steel
45    filing cabinet - TYPE 'B'.

The same reference numerals refer to the same parts through the various Figures.

Description Of The Preferred Embodiment

With reference now to the drawings, the preferred embodiment of the new and

5    improved cabinet locking security device embodying the principles and concepts of the present invention will be described.
The present invention, the new and improved cabinet re-enforcement locking security
mechanism is a system comprised of a plurality of individual components. In their broadest context, such components include a tube or guide, a locking hasp arm, an
10    upper rod, linking rod, a bottom locking bolt, a helical coil spring, oil cups and spacers. Such components are individually configured and correlated with respect to each other to attain the desired objectives.

More specifically, Fig.1 and fig.2 are shown as two types of the cabinet double locking mechanism only differing slightly.

15 TYPE 'A' consists of a rectangular tube (fig.1, 1) to which two hinges (fig.1, 3) are mounted near both ends of the tube and the length of the locking hasp arm (fig.1, s) is guided and slides against a spacer (fig.1, 7) fixed inside the hinged rectangular tube to offer minimum play. Another spacer (fig.1, 13) at the bottom of the hinged rectangular tube reduce play and therefore ensure sliding fit movement of the bottom locking bolt

20    (fig.1, 4) and hence entire mechanism. The end of the locking hasp arm (fig.1, s) is joined to a linking rod (fig.1, 2) below the upper spacer (fig.1, 7).

TYPE 'B' (fig. 2) on the other hand, consists of a tube (fig.2, 1 and fig.3, 2) mounted to a wide hinged flat bar (fig.3, 1). A locking hasp arm (fig.2, 5) is connected to an upper rod (fig.2, 3) and to a finishing cap (fig.2, n). The other side of the upper rod is

25    connected to a linking rod (fig.2, 2). Dimples (fig.2, 7 and fig.3, 3) are pressed at both ends of the tube to reduce sliding play and therefore ensures sliding fit movement of the said upper rod and bottom locking bolt (fig.2, 4).

The lower ends of the linking rods ofboth TYPE 'A' and TYPE 'B' (fig.1, 2 and fig.2, 2)
30    are then connected to the bottom locking bolts (fig.1, 4 and fig.2, 4). Both tubes of the two types, have inside them oil cups (fig.1, 8 and fig.2, 8) through which linking rods
    pass releasing a little oil to spread to sliding locking hasp arm, upper rod, and bottom
    locking bolt reducing sliding friction. The linking rods also pass through helical springs
    (fig.1, 6 and fig.2, 6) and through the spring anchors (fig.1, 9 and fig.2, 9) situated below
35    the lower oil cups.
    When the locking hasp arm (fig.1, 5 and fig.2, 5) is pushed down against the spring
    force (fig.1, 6 and fig.2, 6), the motion is transmitted downwards through the linking rod
    (fig.1, 2- TYPE 'A') and through the upper rod fig.2, 5) and the linking rod- TYPE 'B', to
    the bottom locking bolts (fig.1, 4 and fig.2, 4) which enters into the lower bracket hole
40    (Fig-4, 2 and fig.s, 2).
    The spring, is a single piece, having a helical coil shape and the bottom end sitting on
    an anchor and the other end pushing lightly against a stop (fig.1, 10 and fig.2, 10) fixed
    on the linking rods.
45    The springs are normally compressed 10% of their lengths as they push the locking
    mechanisms upwards (the locking mechanisms comprising of a hasp, linking rod and
    bottom locking bolt- TYPE 'A', and a hasp, upper rod, linking rod and bottom locking
    bolt- TYPE 'B'), and withdrawing the hasp and the locking bolt from their locking
    position and hence, disengaging the locking mechanism from its locked position
so    enabling sideways movement of the locking mechanisms about their hinges.
 
5    The present invention builds upon the conventional flap (flat or angle-bar) design to   
    provide a more efficient cabinet re-enforcement locking system.   
       
    As to the manner of usage and operation of the present invention, the same should be   
    apparent from the above description.   
10    Simply put, a Double Locking Security Flap is a convenient, efficient and an effective   
    locking device, designed to be user friendly and time saving in locking processes.   
    When the double locking security flap is installed, the system locks both the top and the   
bottom of the equipment to the satisfaction of the user.
It is easy to use in that, once the hinged flap is swung into locking position, the steel or

15    wooden cabinet, chest, closed shelf etc in an office, bank, factory and at home, is securely locked both at the top and bottom simultaneously with no need at all of two separate padlocks one at the top and the other at the bottom.

The double locking security system is designed to specifications. Thick metal gauges

means heavy duty locking mechanisms and vice versa, according to needs and 20 requirements ofthe user.

With respect to the above description then, it is to be realized that the optimum dimensional relationships for the parts of the invention, to include variations in size, materials, shape, form, function and manner of operation, assembly and use, are

25    deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specifications are intended to be encompassed by the present invention.
Therefore, the foregoing is considered as illustrative only of the principles of the

invention. Further, since numerous modifications and changes will readily occur to
30    those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.

    Having therefore set forth a detailed embodiment of the present invention described
35    above, what is claimed is:
 
CLAIMS

1. A cabinet re-enforcement locking device characterised in that it utilises a double locking mechanism comprising of a hinged tube terminating with a finishing end-cap, housing and guiding the locking hasp arm controlled by play - reducing - spacer; the said locking hasp arm connected to a linking rod, passes through oil cups, helical springs to join a bottom locking bolt sliding against a bottom spacer.

2. The double locking mechanism in claim 1, wherein the said locking hasp arm fixed to the linking rod is joined to the bottom locking bolt.

3• The double locking mechanism in claim 1, wherein the linking rod fixed at one end to the locking hasp arm; the other end to the bottom locking bolt.

4• A cabinet re-enforcement locking device characterised in that it utilises a double locking mechanism comprising of a tube or guide mounted onto a hinged flat bar; the said tube housing and guiding the upper rod connected to the locking hasp arm, then terminating with finishing end-cap above the locking hasp arm joint with the said upper rod; other end of the upper rod joined to linking rod which passes through oil cups, helical springs to join a bottom locking bolt which sliding against dimples pressed on the said tube.

5• The double locking mechanism in claim 4, wherein the upper rod sliding inside a tube with dimples pressed at both ends; the said upper rod, one side connected to the locking hasp arm, other side joined to a linking rod.


6. The double locking mechanism in claim 4, wherein the locking hasp arm is connected to the upper rod joined to the linking rod connected to the bottom locking bolt.

7• The double locking mechanism in claim1 and 4, wherein the spacers are fitted inside the tube; dimples pressed on both ends of the tube.

8. The double locking mechanism in claim 1, wherein the oil cups are fitted inside the tubes.

9• The double locking mechanism in claim 1 and 4, wherein the helical springs are fitted sitting on anchors and against a stop.

10.  The double locking security flap characterised in claims 1 to 9•

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