Patent US667674A successfully refreshed from Google Patents.
US5114772A
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Protective material having a multilayer ceramic structure
Assignee: Societe Europeenne de Propulsion SEP SA
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Filing: 1991-08-15
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Granted: 1992-05-19
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Expires: 2011-08-15
Abstract
Abstract Sintered ceramic elements are associated to at least one composite material layer having a fibrous reinforcement arrangement and a ceramic matrix located behind the sintered ceramic elements.
Inventors
- 👤 Michel Vives
- 👤 Pierre Taveau
- 👤 Jacques Etienne
- 👤 Yves Remillieux
- 👤 Lucien Charbonnel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:31
CPC Classifications
B; B32; B32B; B32B18/00; C; C04; C04B; C04B37/00; C04B37/008; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C04B35/571; C04B35/71; C04B35/78; C04B35/80; F; F41; F41H; F41H5/00; F41H5/02; F41H5/04; F41H5/0414; F41H5/0428; F41H5/0435; B32B2305/00; B32B2305/08; B32B2305/34; B32B2305/80; C04B2235/00; C04B2235/02; C04B2235/50; C04B2235/52; C04B2235/5208; C04B2235/5216; C04B2235/522; C04B2235/5224; C04B2235/524; C04B2235/5244; C04B2235/5248; C04B2235/5268; C04B2235/70; C04B2235/74; C04B2235/77; C04B2237/00; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/36; C04B2237/361; C04B2237/365; C04B2237/38; C04B2237/50; C04B2237/64; C04B2237/78; Y; Y10; Y10T; Y10T428/00; Y10T428/16; Y10T428/163; Y10T428/164; Y10T428/166; Y10T428/249921; Y10T428/249924; Y10T428/249928; Y10T428/249953
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
77 words
A ceramic protective material comprising: a layer of composite material comprising a fibrous reinforcement arrangement densified by a ceramic matrix and having a residual porosity of approximately 10-15% by volume, and a plurality of sintered ceramic elements arranged at a front face of said layer of composite material, wherein said plurality of sintered ceramic elements bread up the core of a projectile upon impingement and said composite material absorbs residual kinetic energy of said projectile upon impingement.
Claim 2
Dependent Claim
77 words
A ceramic protective material comprising: a layer of composite material comprising a fibrous reinforcement arrangement densified by a ceramic matrix and having a residual porosity of approximately 10-15% by volume, and a plurality of sintered ceramic elements arranged at a front face of said layer of composite material, wherein said plurality of sintered ceramic elements bread up the core of a projectile upon impingement and said composite material absorbs residual kinetic energy of said projectile upon impingement.
Claim 3
Dependent Claim
28 words
A ceramic protective material as claimed in claim 1, wherein said fibrous reinforcement comprises fabric piles arranged parallel to said front face of said layer of composite material.
Claim 4
Dependent Claim
32 words
A ceramic protective material as claimed in claim 1, wherein said plurality of sintered ceramic elements comprises plates arranged side-by-side and adhered to said front face of said layer of composite material.
Claim 5
Dependent Claim
86 words
A ceramic protective material comprising: a layer of composite material comprising a fibrous reinforcement arrangement densified by a ceramic matrix and having a residual porosity, and a plurality of sintered ceramic elements each comprising elements comprising a sintered fiber reinforcement arrangement and a ceramic matrix and arranged at a front face of said layer of composite material, wherein said plurality of sintered ceramic elements break up the core of a projectile upon impingement and said composite material absorbs residual kinetic energy of said projectile upon impingement.
Claim 6
Dependent Claim
86 words
A ceramic protective material comprising: a layer of composite material comprising a fibrous reinforcement arrangement densified by a ceramic matrix and having a residual porosity, and a plurality of sintered ceramic elements each comprising elements comprising a sintered fiber reinforcement arrangement and a ceramic matrix and arranged at a front face of said layer of composite material, wherein said plurality of sintered ceramic elements break up the core of a projectile upon impingement and said composite material absorbs residual kinetic energy of said projectile upon impingement.
Claim 7
Dependent Claim
28 words
A ceramic protective material as claimed in claim 4, wherein said fibrous reinforcement comprises fabric piles arranged parallel to said front face of said layer of composite material.
Claim 8
Dependent Claim
32 words
A ceramic protective material as claimed in claim 4, wherein said plurality of sintered ceramic elements comprises plates arranged side-by-side and adhered to said front face of said layer of composite material.
Claim 9
Dependent Claim
22 words
A ceramic protective material as claimed in claim 4 wherein said residual porosity is in a range of approximately 10-15% by volume.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |