Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
41 words
A laminated ceramic structure comprising a facing member bonded to a backing member the facing member being composed of a very hard ceramic and the backing member being a glass or glass-ceramic matrix having an enhanced capability of absorbing impact energy.
Claim 2
Dependent Claim
41 words
A laminated ceramic structure comprising a facing member bonded to a backing member the facing member being composed of a very hard ceramic and the backing member being a glass or glass-ceramic matrix having an enhanced capability of absorbing impact energy.
Claim 3
Dependent Claim
25 words
A laminated ceramic structure in accord with claim 1 wherein the facing and backing members are bonded by at least one layer of intermediate material.
Claim 4
Dependent Claim
16 words
A laminated ceramic structure in accord with claim 2 wherein the intermediate is a sealing glass.
Claim 5
Dependent Claim
27 words
A laminated ceramic structure in accord with claim 2 wherein the intermediate has a thermal coefficient of expansion intermediate to that of the facing and backing members.
Claim 6
Dependent Claim
38 words
A laminated ceramic structure in accordance with claim 1 wherein the facing member is composed of a carbide, boride, or alumina, and/or the backing member is a glass or glass-ceramic reinforced with graphite, carbon, or silicon carbide fibers.
Claim 7
Dependent Claim
63 words
A laminated ceramic structure in accordance with claim 1 wherein the facing member has a hardness such that the KHN 100 value is in excess of 700 kg./mm2 preferably 2000 to 3000 kg./mm , and/or the backing member has an impact energy absorbing capacity in excess of 10 KJ/m 2 in an unnotched condition, preferably in the range of 10-40 KJ/m 2 .
Claim 8
Dependent Claim
27 words
A laminated ceramic structure in accordance with claims 1, 5 or 6 wherein the facing member and backing member are bonded to each other by hot pressing.
Claim 9
Dependent Claim
33 words
A laminated ceramic structure in accordance with any of claims 1-7, wherein the faceplate and backing member have thermal coefficients of expansion that differ by no more than 20 x 10 -7 /°C.
Claim 10
Dependent Claim
22 words
A laminated ceramic structure in accordance with any of claims 1-8, wherein the backing member is reinforced with carbon or graphite fibers.
Claim 11
Dependent Claim
31 words
A laminated ceramic structure in accordance with any of claims 1-8, wherein the facing member is composed of a whisker reinforced glass-ceramic and the backing member is a fiber reinforced glass-ceramic.