Title of Invention

"A TAMPERPROOF BACKSEAL FOR METAL WATCHES."

Abstract The present invention provides for a tamperproof back seal for watches especially metal watches. The seal is affixed to the back portion of the watch and is made with alternate weak and strong portions in such a way that any attempt to remove the seal would end up in breaking it thereby giving an indication of any tampering.
Full Text Field of the Invention:
This invention relates tamperproof backseal for metal watches. Background of the Invention:
In the watch industry, it is desirable to have a secure cover for the back of the watch case so as to prevent any unauthorised opening of the watch and possible replacement of genuine parts by duplicates or any other mischief.
In the watches made of plastic or other polymers the back cover is easy to secure as it can be heat sealed either directly to the case or through means of pins passing through both the parts.
In the case of watches made with metal case the difficulty arises in fool proof sealing such that once broken it can not be replaced. Sealing using ordinary glue and screws is possible but they have the drawback that they can be opened and then replaced thus serving just as means to lock but not to secure in a foolproof manner. Objective and Summary of the Invention:
It is an objective of the present invention to overcome the aforementioned drawback and provide a secure tamperproof backseal for metal watches.
To achieve the above objective, the invention provides for a tamper proof back seal for metal watches comprising:
- an injection molded sealing case made of plastic,
- said case being provided with weak portions at regular
intervals on its periphery and is applied to the back of the
watch with an adhesive such that on tampering, the said case
breaks into pieces at the weak portions.
This seal secures the back case and any attempt to open the seal would break thereby making it non-replaceable. The special seal is made through molding and is therefore difficult to make a new one, thus making the seal really tamperproof. Brief Description of the Accompanying Drawings:
Figure 1 shows the assembly of the molded case on to the back of the watch in accordance with the invention.
Figure 2 shows the backseal case as per the invention. Detailed Description of the Accompanying Drawings:
First step in the process is the making of back seal case using the injection molding process wherein the raw material Polymethyl Methacrylate (PMMA) is melted and made to flow in the mold cavity at high pressure. The design of the mold is such that it is provided with alternate strong and weak sections.
The said sealing case takes the shape of the back of the watch and can be circular, square, rectangular, or oval.
After the back seal case (1.1) is ready, it is affixed to the back of the watch (1.2) with the help of an adhesive layer (1.3) between the two. The adhesive layer used is UV curing 352 glue or any other known adhesive.
As shown in figure 2, the back seal case made up of alternate strong (2.1) and weak sections (2.2) at its periphery. Any attempt to remove the seal would result breaking it into pieces at weak sections thereby giving a foolproof indication of tampering.







We Claim:
1. A tamperproof backseal for metal watches comprising:
- an injection molded sealing case,
- said case being provided with alternate strong and weak portions at regular intervals on its periphery and is applied to the back of the watch with an adhesive
2. The tamperproof backseal for metal watches as claimed in claim 1 wherein said plastic is Polymethyl Methacrylate (PMMA).
3. The tamperproof backseal for metal watches as claimed in claim 1 wherein said sealing case has the shape of the back of the watch.
4. The tamperproof backseal for metal watches as claimed in claim 3 wherein said sealing case is a ring.
5. The tamperproof backseal for metal watches as claimed in claim 3 wherein said sealing case is a square or a rectangle.
6. The tamperproof backseal for metal watches as claimed in claim 1 wherein said adhesive is UV curing 352 glue or any other known adhesive.
7. A tamperproof backseal for metal watches as and herein described with reference to the accompanying figures.

Documents:

787-DEL-2003-Abstract-(22-02-2011).pdf

787-del-2003-abstract.pdf

787-DEL-2003-Claims-(22-02-2011).pdf

787-DEL-2003-Claims-(25-02-2011).pdf

787-del-2003-claims.pdf

787-del-2003-complete specification granted.pdf

787-DEL-2003-Correpondence-Others.pdf

787-del-2003-correpondence-po.pdf

787-DEL-2003-Correspondence-Others-(25-02-2011).pdf

787-DEL-2003-Description (Complete)-(22-02-2011).pdf

787-DEL-2003-Description (Complete)-(25-02-2011).pdf

787-del-2003-description (complete).pdf

787-del-2003-drawings.pdf

787-del-2003-form-1.pdf

787-del-2003-form-13.pdf

787-del-2003-form-19.pdf

787-DEL-2003-Form-2-(22-02-2011).pdf

787-DEL-2003-Form-2-(25-02-2011).pdf

787-del-2003-form-2.pdf

787-del-2003-form-3.pdf

787-DEL-2003-GPA.pdf


Patent Number 246918
Indian Patent Application Number 787/DEL/2003
PG Journal Number 12/2011
Publication Date 25-Mar-2011
Grant Date 21-Mar-2011
Date of Filing 06-Jun-2003
Name of Patentee HARBINDER SINGH PUREWAL
Applicant Address H-22, JANGPURA EXTN., NEW DELHI-110014
Inventors:
# Inventor's Name Inventor's Address
1 HARIBINDER SINGH PUREWAL H-22, JANPURA EXTN. NEW DELHI-110014, INDIA.
PCT International Classification Number B41M
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA