FORM 2
THE PATENT ACT 1970
(39 of 1970)
&
The Patents Rules, 2003
COMPLETE SPECIFICATION
(See section 10 and rule!3)
1. TITLE OF THE INVENTION: IMPROVED CHILD RESISTANT CARTON
2. APPLICANT (S)

(a) NAME: WOCKHARDT RESEARCH CENTRE.
(b) NATIONALITY: INDIAN
(c) ADDRESS: D-4, M.I.D.C. Area, Chikalthana, Aurangabad - 431210 (M.S) India

3. PREAMBLE TO THE DESCRIPTION
The present invention relates to improved child resistant carton and methods for using the same. The improved child resistant carton comprises housing and an insert. The housing comprises a locking mechanism. The housing may be made from multiple panels. The panel may be of any shape and may be more than one. The housing may be made of card board.
The following specification particularly describes the invention and the manner in which it is to be performed.


4 Description :
Child resistant blisters are well known in the prior art. Many a times, child resistant blisters are prohibitively expensive. Instead, child resistant carton comprising the blisters are the emerging trends. These features are known in the prior art. The present invention relates to improved child resistant carton and methods for using the same. The child resistant features should be durable and reliable but nonetheless easily operated by adults. Preferably, the carton may be operated to repeatedly access the contents thereof. These are less expensive and yet are effective child resistant ones.
US Patent No 7,090,079 relates to produce a package, for example for pharmaceutical
preparations, in which the contents are better protected against children gaining access
which is as good after repeated openings and closings as on the first opening.
US patent No 6,491,211 relates to cartons, and, more particularly, to child resistant
cartons and method for using the same.
US Patent No 5,275,291 relates to Child resistant elderly friendly tablet dispensing
container.
US Patent No 6,047,829, 6,230,893, 6,412,636 relate to a unit dose packaging system
(UDPS) having a child resistant locking feature.
US Patent No 6,752,272 relates to a unit dose packaging system (UDPS) with exterior
pocket feature.
US Patent No 6,913,149 relates to a unit dose packaging system (UDPS) with molded
locking feature.
US Patent No 6,951,282 relates to peel away tab child resistant package.
US Patent No 7,216,776 relates to child resistant pill dispenser.
US Patent No 7,401,702, 5,437,371, 5,129,527, 6,409,020 relate to child resistant
blister package.
US Patent No 6,394,275 relates to child resistant package.
US Patent No 6,173,838 relates to child resistant medication compact.
US Patent No 6,523,691 relates to child resistant closure.
US application No 20040099565 relates to a carton package of fiber-based material
for pharmaceutical etc. that overcomes the structural weakness problem of the prior
art.

US application No 20070235368 and 20090045096 relate to a child resistant, senior friendly unit dose container.
US application No 20080093252 relates to blister card for child-resistant package. US application No 20080135606 relates to apparatus and method for holding and protecting drug delivery devices.
Summary of the invention
The present inventors while working for an improved child resistant carton comprising ordinary blister have found that there is a need for child resistant features which are durable and reliable. The child resistant features on the carton comprise an improved locking mechanism with the feature of engaging and releasing means for non access or access of the insert comprising pharmaceutically active ingredient in tablet or capsule form. The main features of the improved child resistant carton and locking mechanism may be (i) child resistant and yet easy to operate by an adult, (ii) Repeated opening and closing of the locking mechanism, (iii) Child resistant carton may be easier and less expensive to manufacture. The insert may be an ordinary blister. The blister may be located on the tray inside the housing of carton.
The pharmaceutically active ingredient refers to a therapeutically active compound, as well as any prodrugs thereof and pharmaceutically acceptable salts, hydrates and solvates of the compound and the prodrugs. It may include one or more of amlodipine, sertraline, Zolpidem, cetrizine, lisnopril, enalapril, terbinafine, phenytoin sodium, bupropion, diclofenac sodum, diltiazem hydrochloride, donepezil hydrochloride, duloxetine hydrochloride, famotidine, ropinirole, divalproex, entacapone, carbidopa, levodopa, eszopiclone, felodipine, fenofibrate, lansoprazole, metoprolol succinate, pantoprazole, pregabalin, vancomycin hydrochloride, mycophenolate, olanzapine, azithromycin, quetiapine, rabeprazole, ropinirole, fexofenadine, levetiracetam, ramipil, risperidone, ranitidine, tamsulosin hydrochloride, ziprasidone, topiramate, valacyclovir, venlafaxine, memantine and lamotrieine and the like.

The details of one or more embodiments of the inventions are set forth in the description below. Other features, objects and advantages of the invention will be apparent from the description and claims.
Detailed description of the drawings

Figure 1 Carton housing blank outline
Figure 2 Top view of the formed carton housing along with blister
Figure 3 Front view of carton housing detailing the various parts
Figure 4 Carton housing blank outline
Figure 5 Carton tray blank outline
Figure 6 Side view of carton housing detailing the function
Figure 7 Top view of carton housing
Figure 8 Carton blank outline
Figure 9 Perspective view of the locking mechanism
Figure 10 Front and side view detailing the carton function
Figure 11 Carton blank outline
Figure 12 Side view after insertion of the locking mechanism for carton
Figure 13 Top view of the carton after insertion of the locking mechanism
Embodiments of the improved child resistant carton may include one or more of the following features. An improved carton comprises housing and an insert. The housing comprises a locking mechanism. The housing may be made from multiple panels. The panel may be of any shape such as rectangular, square, trapezoid or any other combinations. The multiple panels may be more than one preferably 3 or 4 numbers. The housing may have an open end to let or take out the insert out of the housing. The housing may be made of card board.
The card board material for use in the invention may be folding box board of weight in the interval 170 to 500 g/m2 (Grams per square metre), preferably 200 to 400 g/m2. The card board used may be within the thickness range of 0.2 mm to 1 mm. The coating may provide a high degree of smoothness and superior graphic print surface.

All the above features regarding the carton, housing, insert, shape, material of construction, thickness of material and coating are applicable to all the embodiments of the improved child resistant carton detailed below.
One of the embodiments of the carton is shown in Figure 1, Figure 2 & Figure 3. The housing (la) may be made from cardboard materials blank comprising two panels known as carton housing blank outline as shown in Figure 1. The card board material may be a single blank. The blank may be of 200-400 gsm (Grams per square meter) with printable outer surface. Panel -1(1) may be the top panel comprising the part "press and hold" (8) on one side and vertical obstacle (8a) as shown in Figure 3 on the other. Panel -2 (2) is the back portion of the housing comprising the flexible support (6) as shown in Figure -3. Locking mechanism (3) comprises horizontal resting rack (3a) with notch (7) is shown in Figurel. This may act as a support to the insert (4) and may not allow it come out.
Filled insert (4) with groove may be inserted inside the housing properly. The insert (4) may get stuck in the vertical obstacle (8a) and may not come out on pulling.
To bring out the insert, the cut part "press and hold" (8) may need to be pressed which in turn may press the back portion of the insert (4). The bottom flexible support (6) may provide an opposite thrust while gripping the insert tightly.
While holding the cut paif'press and hold", the insert (4) may need to be pulled out. The pressing may allow the insert (4) to slip under the vertical obstacle (8a). The insert (4) then slides over the horizontal resting rack (3 a) while the notch (7) in the resting rack may not allow the insert (4) to come out of the housing.
Edges of the panel (1) & panel (2) may have to be folded as shown in the Figure 1. The various folding of panel-1 (1) and panel-2 (2) are either at 90° or 180° and the directions are shown by arrows. Panel 2 and panel 1 may be joined or bonded to form housing. Bonding between the two surfaces may be achieved by the glue. The various surfaces bonding are represented by glue-1 (9), glue -2 (10), glue-3 (11), glue-4 (12), glue-5 (13), glue-6 (14), glue-7 (15), glue-8 (16), glue-9 (8b) & glue-10 (17). An insert (4) may be a pack of blister (5) comprising one or more rows of tablet or

capsule. Insert (4) may be provided with a groove in between the rows of tablet or capsule.
When the "Press and hold" (8) may be pressed as shown n Figure 2, it may release the horizontal resting rack (3) facilitating easy withdrawal of the insert(4) when pulled, for removal of tablet or capsule. After removal of the tablet or capsule, the insert (4) may be pushed back into the housing and the above operation may be repeated. This locking and releasing mechanism of the carton facilitate improved child resistant character to the carton.
Another embodiment of the carton is shown in Figure 4, Figure 5, Figure 6 and Figure 7. The housing (la) may be made from cardboard materials, comprising multiple rectangular panels. The embodiment shown in Figure 4 comprises two panels namely panel-1 (1) and panel-2 (2) respectively. By affecting various folds either at 90° and 180° from the arrows as shown in Figure 4, panel (2) and panel (1) together form the housing. Bonding between the two surfaces may be achieved by the glue. The various surfaces bonding are represented by glue- 1 (5a), glue -2 (6), glue-3 (7), glue-4 (8), glue-5 (9), glue-6 (10). A flexible pull up (5) of the shape as shown in Figure 6 may be provided on the inside surface of panel (1) at the back end of the housing. A locking mechnism (3) which comprises groove (4a) is shown in Figure 4. Stoppers (11) may be provided on the panel-2 (2) as shown in Figure 4. Figure 5 shows the carton tray blank outline. Carton tray blank outline comprises three parts namely back part of the tray (14), front part of the tray (13) and tray card with cavities (12) to hold the blisters. The tray comprises card cold seal track (19) with cavities (12). Front part of tray (13) comprises locks (16) and locking grooves (15). The locking mechanism may be achieved by carrying out the various folds at 90° as shown by the arrows. Back part of the tray comprises various folds at 90° and 180° as shown by the arrows in Figure 5. Back part of the tray (14) may be smaller in height than the front part of tray (13). A carton tray blank outline as shown in Figure 5 may be provided inside the housing. The tray may be made of cardboard material and may be slid able one inside the housing. The tray may be the insert (4) or hold the insert (4) comprising the blisters. The insert (4) may be strip of blister.

An insert (4) may be placed inside the tray. The tray may be inserted into the housing from the front end to back end of the housing. The round shaped blister may be placed in the tray with raised part suitably jammed in the punched hole. The tray may be then closed and sealed. The filled tray may be pushed inside the housing. As shown in Figure 5, the glue -1 (17) and glue-2 (18) represent the various surfaces bonding of the back part of the tray (14).
When the flexible pull up (5) may be pulled upside, the inside locking mechanism (3) may be raised and may release the back portion of the inside tray card. When the front part of the tray (13) may be pulled outside by pull (13a), the whole tray card may come out. After obtaining the pharmaceutically active ingredient, the tray may again be pushed inside by (13a), which may result in the back part of the tray (14) pushing the locking mechnism (16) which may slip and may get locked. This operation may be repeated many times. This locking and releasing mechanism of the carton facilitate improved child resistant character to the carton.
Another embodiment of the carton is shown in Figure 8, Figure 9 & Figure 10 respectively. The housing (la) may be made from cardboard materials, comprising preferably panel-l(l), panel- (2) and panel-3 (3a) respectively. The carton of this embodiment may be made from 3 panels and each panel may be of rectangular shape. The carton may comprise the locking mechanism (3). The locking mechanism (3) may get into shape as the carton may be folded either by 90° or 180° along the arrows shown in Figure 8. The locking mechanism (3) may comprise the following part namely two silted grooves (5), one pull tab (6) and a press and hold tab (7).
The carton may get locked when the pull tab (6) passes through the grooves (5) and its edge may get stuck inside the locking mechanism (3). The carton may be opened by pressing the press and hold (7) tab and at the same time pulling the pull tab (6). By this operation lock may get released and may be positioned itself from the grooves. As the pull tab (6) may be pulled upward, the carton may get opened. This locking and releasing mechanism of the carton facilitate improved child resistant character to the carton. The insert may be accommodated in the extension of any of the three panels. Bonding between the two surfaces may be achieved by the glue. The various

surfaces bonding are represented by glue- 1 (8), glue -2 (9), and glue-3 (10) as shown in Figure 8 & Figure 9.
Another embodiment of the carton is shown in Figure 11, Figure 12 & Figure 13. The housing (la) may be made from cardboard materials, comprising preferably three or more rectangular panels. The embodiment shown in Figure 11 may be made from 4 panels and each panel may be of rectangular or any other shape. Panel-3 (3) has an extension which forms part of the locking mechanism (3) as shown in Figure 11. The fourth panel-4 (6) may be part of the embodiment of Figures 11, 12 & 13. Figure 11 shows the panel-1 (1), panel-2 (2), panel-3 (3a) and panel-4 (6) and their folding pattern either by 90 or 180 and their direction by arrows. The formation of the carton by this folding pattern may get the locking mechanism (3) into shape. Bonding between the two surfaces may be achieved by the glue. The various surfaces bonding are represented by glue- 1 (8), glue -2 (9), glue-3 (10) and glue-4 (11) as shown in Figure 11. Figure 12 & Figure 13 represents the carton functioning. Figure 12 depicts the locking mechanism (3) which comprises the component press and hold (5) and pulls (7). The insert (4) may be accommodated in the extension of the first three panels. The fourth panel-4 (6) may be an extension of the locking mechanism (3); the panel-4 (6) may house the press and hold (5) and the stopper (12).
The carton may get locked when the pull tab (7) slips inside the panel-4 (6) and may
get stuck with the stopper (12). The carton may be opened by pressing the press and
hold (5) tab. This operation may push the locking mechanism (3) which may get
released. At this juncture the pull (7) tab may be pulled outside and the carton may get
opened.
This locking and releasing mechanism of the carton facilitate improved child resistant
character to the carton.
While the present invention has been described in terms of its specific embodiments, certain modifications and equivalents will be apparent to those skilled in the art and are intended to be included within the scope of the present invention.

Claims :
1. A carton having improved child resistance characteristics comprising; housing (la) and an insert (4) shown in figures 1, 4, 5, 8 and 11; the housing (la) comprises a locking mechanism (3) shown in figures 1 tol3. The locking mechanism (3) of the carton shown in figures 1 to 3 comprises a horizontal resting rack (3a), notch (7), press and hold (8), vertical obstacle (8a) and bottom support (6); the locking mechanism (3) of carton shown in figures 4 to 7 comprises flexible pull up (5), grooves (4a), stopper (11), pull (13a), locks (16), locking grooves (15) and back part of the tray (14); the locking mechanism (3) of carton shown in figures 8 to 10 comprises groove (5), pull tab (6) and press and hold (7); the locking mechanism (3) of carton shown in figures 11 to 13 comprises press and hold (5) pull (7), stopper (12) and panel-4 (6); The locking mechanism comprises locking and releasing of the carton. The insert (4) comprises tray comprising blisters or blisters; the insert is inside the housing (la); the locking mechanism (3) is characterized in that the locking and releasing of the carton has improved child resistance characteristics.
2. The locking mechanism (3) of the carton shown in figures 1 to 3 as claimed in claim 1, wherein the horizontal resting rack (3 a) acts as a support and the insert (4) gets stuck on the vertical obstacle (8a) locking the insert (4).
3. The locking mechanism (3) of the carton shown in figures 1 to 3 as claimed in claim 1, wherein pressing the cut part press and hold (8) allows the insert (4) to slip under the vertical obstacle (8a) and slides over the horizontal resting rack (3 a) releasing the lock for access to the insert (4) and which insert (4) locking in the notch (7).
4. The locking mechanism (3) of the carton shown in figures 4 to 7 as claimed in claim 1 wherein the tray is pushed inside by pull (13a) resulting in the back part of the tray (14) pushing the locking mechanism (3) which slips and gets locked.
5. The locking mechanism (3) of the carton shown in figures 4 to 7 as claimed in claim 1, wherein the flexible pull up(5) is pulled upside which results in inside locking mechanism (3) being raised and releases the back portion of the inside tray card.

6. The locking mechanism (3) of the carton shown in figures 8 to 10 as claimed in claim 1, wherein the carton gets locked when the pull tab(6) passes through the grooves(5).
7. The locking mechanisms (3) of the carton shown in figures 8 to 10 as claimed in claim 1, wherein pressing the press and hold tab (7) and simultaneously pulling the pull tab (6) releases the lock and the carton gets opened.
8. The locking mechanism (3) of the carton shown in figures 11 to 13 as claimed in claim 1, wherein the locking mechanism gets locked when the pull tab (7) slips inside the panel-4 (6) and get stuck with the stopper (12).
9. The locking mechanism (3) of the carton shown in figures 11 to 13 as claimed in claim 1, wherein the lock is released by pressing the press and hold (5) tab and at the same time pulling outside the pull tab (7).
10. The blister as claimed in claim 1 comprises pharmaceutically active ingredients.