A FINGER PRESSED SPECIAL KNOCK OUT

BACKGROUND ART

Knock outs are being used in various forms for various types of applications such as covers of electrical appliances and in separation plates of electrical panels and almost all of them have been always rigidly attached to the plated on which they are situated using micro joints to hold them in place.

The knock out designs which have been in existence for the purpose of creating access holes have so far been unable to make the removal of the joint easy and have often needed the use of heavy tools and huge effort to remove the knock out safely without distorting or harming the plate on which the knock out is situated.

Even the best models have had to avail the use of tools and high physical force for removal thereby making the process time consuming tedious and in some cases unsafe while solutions such as thinner plating for separation plates have resulted in reduced strength and inconveniences.

DESCRIPTION OF EXEMPLARY EMBODIMENT.

In the drawings each essential view and component of the finger pressed special knock out has been illustrated for comprehending purposes.

FIG.l and FIG.2 depict the knock out which is made by sheering the sheet of material from both front and back views where FIG.l shows the exact view that a user may see when handling the finger pressed special knock out where a depressed portion and a bulging portion along with a stopper which restricts the knock out from revolving out wards and towards the user has been depicted whereas FIG.2.depicts the reverse view of the knock out from an inside to out side point of view.

Referring to FIG.3.we can notice the three levels created by the sheering mechanism used to create the finger pressed special knockout where a larger portion has been separated to one level below the level of the sheet on which the knock out is situated while the other portion has risen above the level of the sheet creating three levels of equal thickness on the sheet.

FIG.4 and FIG.6 are perspective views of the finger pressed special knock out where indications towards the step which defines and separates the depression and bulge on the knock out itself have been indicated while also making clear the points which are connecting the knock out to the sheet on which it is situated and are situated slightly towards the side of the diameter of the knock out in order to get the desired effect of unhinged and unstuck free smooth removal of the knockout from the access hole it creates.

FIG.5.a perspective view of the knock out clearly depicts the stopper that restricts the finger pressed special knock out from rotating outwards towards the user while the figure also clearly indicates the three levels that depression, the bulge and the sheet on which the knock out lies occupy. Here the stopper is employed to reduce the risk of unintentional removal of the knock out due to the ultimate ease with which it can be done.

Referring to FIG.7.we can clearly see the rotation of the knock out and this also a gives an illustration of the joints on which the knock out pivots and rotates when pressure is applied to the larger portion of the knock out rotating in inwards and away from the user while the figure also reveals the disjointed edges along the circumference of the knockout which are caused by the shearing mechanism employed to create the knock out which is an inherent part of the design.

THE TECHNICAL FIELD.

The present invention relates to a easy to use finger pressed special knock out used for the purpose creating access holes or cavities.

INDUSTRIAL APPLICABILITY.

This invention carries huge potential in the spears of electrical enclosure and vertical separation plates where this finger pressed special knock out can present itself as a time saving ,safer and more efficient way of creating access cut outs for wiring and cabling purposes and other benefits that maybe accrued thereof.

DISCLOSURE OF THE INVENTION.

The special finger pressed knock out is an impression which consists of two levels one above and one below the level of the sheet of material it is situated and intended to create an opening on and can be easily removed by pushing on the larger depressed portion of the knockout which will lie below the level of the sheet of material on which the knock lies.

The continuous pressure applied on the larger depressed portion of the knockout will make the knock out pivot around the two points at which is connected to the sheet of material on which is situated on revolving with the line connecting the two joints which attach the knock out to the sheet on which it lies being the axis of rotation which will always be slightly offset from the diameter of the knock and the access hole.

Continuous pressure will rotate the disk shaped knock out even further eventually break the micro joints thereby detaching it completely from the sheet on which it was impressed initially resulting in smooth hassle free removal of the knock out with the main advantage being the slightly offset joints helping unstuck removal as opposed to the knock out being attached to two points on its diameter.

INTRODUCTION TO DRAWINGS

An example of the invention will be described by referring to the accompanying drawings.

FIG.l.Front view (outside) of the knock out in its complete form before removal attached to sheet of material.

FIG.2. Back view (inside) of the knock out in its complete form before removal attached to the sheet of material.

FIG.3. Bottom view of the finger pressed special knock out.

FIG.4.A Perspective view of the knock out in its initial state.

FIG.5.A Perspective view of the knock out in its initial state from an opposing angle.

FIG.6.A Perspective view of the knock out in its initial state from an upward angle.

FIG.7.The knock out being rotated for removal.

We Claim:
1. A special knockout 1 is characterized in such a way that it comprises a generally
circular impression with diameter M on a sheet of material 2 which may form a part
of a steel separation plate 2 or other material and when removed it creates access
cutouts or openings in the specific material and comprising:
a) two uneven portions separated by a step 5 on the surface of the knock out 1 where
the larger portion 3 is a depression 3 on the sheet of material 2 on which the knock out
1 is situated on while the remaining portion is a bulge 4 on the surface on which the
knock out 1 is situated ;
b) the knock out is disjoint from the surface it is situated on along its circumference 9
except for two points which when connected in a straight line form a line parallel to
the step 5 on the surface of the knock out 1 ;
c) generally the larger portion 3 of the knock out 1 forms the depression 3 on the
surface of the material the knock out 1 is situated on and this portion is blocked from
revolving outwards by a small stopper 7 situated on the circumference 9 of the access
cut out.
2. In accordance to claim 1 the two joints 8 connecting the knock out 1 to the sheet of
material 2 it is situated on is placed in such a way that the straight line connecting the
two joints 8 is parallel to the step 5 separating the two portions on the knock out 1 and
has a length equal to the length of the step 5 or a length less than the diameter M of
the knock out 1 or the access hole itself and when the larger portion 3 of the knock out
1 is pushed inwards the knock out 1 revolves pivoting on these two joints 8 until the
joint 8 breaks free to expose the access hole.
3. In accordance to claim 1 and 2 the knock out 1 has two levels, one lying below the
5
level of the sheet of material on which the knock out 1 is situated on while the other is
above the level of the sheet it is attached to and the two levels are separated by a step
5 defining the transition from one level to another and the straight line created by the
step 5 is of a length either less than or equal to the diameter M of the knock out 1.
4. In accordance to claim 1 the special knock out 1 generally has a circular shape and
consists of diameter M where M may vary according to the situation and requirement
at hand.
5. The use of the above mentioned special knock out 1 in accordance to claim 1-4 in
any form for the purpose of creating access holes or cavities.