US5147086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of capsule for use in isostatic pressing treatment
Assignee: Kobe Steel Ltd
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Filing: 1991-04-11
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Granted: 1992-09-15
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Expires: 2011-04-11
Abstract
Abstract A process for preparation of capsule for use in isostatic pressing treatment, the process comprising a first step of enclosing a material to be treated, such as ceramic, metal, resin, etc. with metallic foil having a thickness of from 30 to 300 μm, and a second step of welding the metallic foil so as to seal the material to be treated in the metallic foil thus welded, thereby preparing a capsule, wherein the welding is carried out by means of TIG welding. Alternatively, the welding may be carried out by means of seam resistance welding. It is posible, by the process, to seal the material to be treated in a capsule easily and economically. The capsule thus obtained is in a good sealed condition, permits effective isostatic pressing treatment, and enables the treated material to be taken out easily. A ceramic or metal layer covers the material to be treated to prevent adhesion between the material and the metallic foil.
Inventors
- 👤 Takao Fujikawa
- 👤 Yasuo Manabe
- 👤 Kazuhiko Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:00
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/001; B22; B22F; B22F3/00; B22F3/12; B22F3/14; B22F3/1208; B22F3/1258; B23; B23K; B23K11/00; B23K11/002; B23K9/00; B23K9/0026; B29; B29C; B29C43/00; B29C43/32; B29C43/36; B29C43/3642; C; C04; C04B; C04B35/00; C04B35/01; C04B35/10; C04B35/622; C04B35/64; C04B35/645; C04B35/6455; C04B2235/00; C04B2235/65; C04B2235/658; C04B2235/6581; C04B2235/70; C04B2235/74; C04B2235/77; C04B2235/95
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
A process for preparation of capsule for use in isostatic pressing treatment which comprises: a first step of enclosing a material to be treated with metallic foil having a thickness of from 30 to 300 μm, said material to be treated being covered with a ceramic or metal layer which prevents adhesion between the material to be treated and the metallic foil; and a second step of welding the metallic foil so as to seal the material to be treated in the metallic foil thus welded, thereby preparing a capsule, the welding being carried out by means of TIG welding.
Claim 2
Dependent Claim
100 words
A process for preparation of capsule for use in isostatic pressing treatment which comprises: a first step of enclosing a material to be treated with metallic foil having a thickness of from 30 to 300 μm, said material to be treated being covered with a ceramic or metal layer which prevents adhesion between the material to be treated and the metallic foil; and a second step of welding the metallic foil so as to seal the material to be treated in the metallic foil thus welded, thereby preparing a capsule, the welding being carried out by means of TIG welding.
Claim 3
Dependent Claim
101 words
A process for preparation of capsule for use in isostatic pressing treatment which comprises: a first step of enclosing a material to be treated with metallic foil having a thickness of from 30 to 300 μm, said material to be treated being covered with a ceramic or metal layer which prevents adhesion between the material to be treated and the metallic foil; and a second step of welding the metallic foil so as to seal the material to be treated in the metallic foil thus welded, thereby preparing a capsule, the welding being carried out by means of seam resistance welding.
Claim 4
Dependent Claim
101 words
A process for preparation of capsule for use in isostatic pressing treatment which comprises: a first step of enclosing a material to be treated with metallic foil having a thickness of from 30 to 300 μm, said material to be treated being covered with a ceramic or metal layer which prevents adhesion between the material to be treated and the metallic foil; and a second step of welding the metallic foil so as to seal the material to be treated in the metallic foil thus welded, thereby preparing a capsule, the welding being carried out by means of seam resistance welding.
Claim 5
Dependent Claim
18 words
The process of claim 1 wherein said first step comprises inserting the material into an existing metal foil.
Claim 6
Dependent Claim
18 words
The process of claim 2 wherein said first step comprises inserting the material into an existing metal foil.
Claim 7
Dependent Claim
14 words
The process of claim 3 including the further step of isostatically pressing the capsule.
Claim 8
Dependent Claim
14 words
The process of claim 4 including the further step of isostatically pressing the capsule.
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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) | 1995-09-15 | 1996-03-16 | 1996-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-15 | 2000-03-16 | 2000-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-15 | 2004-03-16 | 2004-09-15 | $7700.00 | Window Closed / Lapsed |