Title of Invention	A PROCESS FOR THE PREPARATION OF A LIGHT WEIGHT CERAMIC COMPOSITE MATERIAL FOR USE IN BULLET PROOF PANELS/SHELTERS"
Abstract	A process for the preparation of a light weight ceramic composite material for use in bullet proof panels/shelters comprising: (a) preparing a blend of alumina (2.5% approx.) and other additives (4.5% approx.) as herein described in the powder form, (b) compacting said powder blend in a die to obtain green compact, (c) sintering said green compact to obtain dense tiles, (d) bonding said sintered ceramic tiles to the sheets of impregnated fabric by covering under pressure, (e) overwrapping said sheets with a spall cover, followed by pressing/curing o obtain said ceramic composite material.

Title of Invention

A PROCESS FOR THE PREPARATION OF A LIGHT WEIGHT CERAMIC COMPOSITE MATERIAL FOR USE IN BULLET PROOF PANELS/SHELTERS"

Abstract

A process for the preparation of a light weight ceramic composite material for use in bullet proof panels/shelters comprising: (a) preparing a blend of alumina (2.5% approx.) and other additives (4.5% approx.) as herein described in the powder form, (b) compacting said powder blend in a die to obtain green compact, (c) sintering said green compact to obtain dense tiles, (d) bonding said sintered ceramic tiles to the sheets of impregnated fabric by covering under pressure, (e) overwrapping said sheets with a spall cover, followed by pressing/curing o obtain said ceramic composite material.

Full Text	DESCRIPTION (COMPLETE) OCR NOT PREPARE DUE TO PRINT PROBLEM CLAIM: 1. A process for the preparation of a light weight ceramic composite material for use in bullet proof panels/shelters comprising : a) preparing a blend of alumina (2.5% approx.) and other additives (4.5% approx.) as herein described in the powder form, b) compacting said powder blend in a die to obtain green compact, c) sintering said green compact to obtain dense tiles, d) bonding said sintered ceramic tiles to the sheets of impregnated fabric by covering under pressure, e) overwrapping said sheets with a spall cover, followed by pressing/curing to obtain said ceramic composite material. 2. A process as claimed in claim 1 wherein said powder blend consists of oxides, borides, carbides and/or nitrides of aluminium. 3. A process as claimed in claim 1 wherein said tiles at step d are bonded to the backing material using epoxy resin. 4. A process as claimed in claim 1 wherein said fabric comprises fibre glass sheets from preimpregnated fabric. 5. A process as claimed in claim 1 wherein said step of sintering is carried out at a temperature of 1600 to 1950°C. 6. A process for the preparation of a light weight ceramic composite material substantially as herein described and illustrated in the examples.

Full Text

DESCRIPTION (COMPLETE)
OCR NOT PREPARE DUE TO
PRINT PROBLEM

CLAIM:
1. A process for the preparation of a light weight ceramic composite material for use in bullet proof panels/shelters comprising :
a) preparing a blend of alumina (2.5% approx.) and other additives
(4.5% approx.) as herein described in the powder form,
b) compacting said powder blend in a die to obtain green compact,
c) sintering said green compact to obtain dense tiles,
d) bonding said sintered ceramic tiles to the sheets of impregnated
fabric by covering under pressure,
e) overwrapping said sheets with a spall cover, followed by
pressing/curing to obtain said ceramic composite material.

2. A process as claimed in claim 1 wherein said powder blend consists of
oxides, borides, carbides and/or nitrides of aluminium.
3. A process as claimed in claim 1 wherein said tiles at step d are bonded to
the backing material using epoxy resin.
4. A process as claimed in claim 1 wherein said fabric comprises fibre
glass sheets from preimpregnated fabric.
5. A process as claimed in claim 1 wherein said step of sintering is carried
out at a temperature of 1600 to 1950°C.
6. A process for the preparation of a light weight ceramic composite
material substantially as herein described and illustrated in the examples.

Documents:

720-del-1995-abstract.pdf

720-del-1995-claims.pdf

720-del-1995-correspondence-others.pdf

720-del-1995-correspondence-po.pdf

720-del-1995-description (complete).pdf

720-del-1995-form-1.pdf

720-del-1995-form-2.pdf

720-del-1995-form-3.pdf

720-del-1995-form-4.pdf

720-del-1995-form-9.pdf

720-del-1995-gpa.pdf

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Patent Number

190748

Indian Patent Application Number

720/DEL/1995

PG Journal Number

15/2010

Publication Date

09-Apr-2010

Grant Date

22-Mar-2004

Date of Filing

20-Apr-1995

Name of Patentee

THE CHIEF CONTROLLER RESEARCH & DEVELOPMENT, MINISTRY OF DEFENCE, MINISTRY OF DEFENCE, GOVERNMENT OF INDIA,

Applicant Address

B-314,, SENA BHAWAN, DHQ P.O., NEW DELHI-110011.

Inventors:

#	Inventor's Name	Inventor's Address
1	SARASWATI RANAGANATH	DEFENCE METALLURGICAL RESEARCH LABORATORY, HYDERABAD.

PCT International Classification Number

F41H 1/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA