Patent US4142022A successfully refreshed from Google Patents.
US4142022A
Expired / Lapsed
US
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Ceramic-metal laminate
Assignee: Technetics Corp
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Filing: 1976-04-05
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Granted: 1979-02-27
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Expires: 1996-04-05
Abstract
Abstract A ceramic-metal composite laminate capable of exposure to high temperature differentials without damage, consisting of an inner ceramic layer, an outer metal layer and an intermediate interface layer of a low modulus metallic low density structure having a high melting point. The ceramic layer is secured to the low modulus structure directly or through an intermediate ceramic-metal composite, and the outer metal layer is brazed to the intermediate low modulus layer. Thermal strains caused by a temperature differential between the inner and outer layers are taken up without harmful effect by the intermediate low modulus layer.
Inventors
- 👤 Arnold R. Erickson
- 👤 Carlino Panzera
- 👤 Robert P. Tolokan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:12
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/02; B32B7/00; B32B7/04; C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/123; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/341; C04B2237/38; C04B2237/40; C04B2237/405; C04B2237/50; C04B2237/59; C04B2237/592; C04B2237/60; F; F02; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A composite structure comprising: (a) fired high temperature ceramic member having 2 opposing exterior surfaces; and (b) a plurality of bifurcated metal staples, the bifurcated portions of the staples being embedded in the ceramic member, the cross-piece connecting the biforcated portions of the staples being exterior one of the opposing exterior surfaces of the member, the distal ends of the staple projecting completely through the member and being on the outside of the other opposing exterior surface in a position approximately perpendicular to the bifurcated portions of the staple, the cross member and ends of the staple being arranged in such a manner to form a geometric bond with the ceramic member, there being no chemical interface formed between the staple and member.
Claim 2
Dependent Claim
123 words
A composite structure comprising: (a) fired high temperature ceramic member having 2 opposing exterior surfaces; and (b) a plurality of bifurcated metal staples, the bifurcated portions of the staples being embedded in the ceramic member, the cross-piece connecting the biforcated portions of the staples being exterior one of the opposing exterior surfaces of the member, the distal ends of the staple projecting completely through the member and being on the outside of the other opposing exterior surface in a position approximately perpendicular to the bifurcated portions of the staple, the cross member and ends of the staple being arranged in such a manner to form a geometric bond with the ceramic member, there being no chemical interface formed between the staple and member.
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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) | 1982-02-26 | 1982-08-28 | 1983-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-26 | 1986-08-28 | 1987-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-26 | 1990-08-28 | 1991-02-27 | $7700.00 | Window Closed / Lapsed |