US4032335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making metallic, molded composite bodies
Assignee: Sintermetallwerk Krebsoege GmbH
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Filing: 1975-11-21
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Granted: 1977-06-28
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Expires: 1995-11-21
Abstract
Abstract A process for producing composite bodies consisting of discrete particles, embedded in a metallic embedding material, in which the particles are positioned relative to the embedding material and the resulting composite is subjected to isostatic compression at pressures which suffice to cause the particles to be embedded.
Inventors
- 👤 Gerhard Zapf
- 👤 Lothar Albano-Muller
- 👤 Horst Kiethe
- 👤 Rainer Rohlig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:00
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/20; F42B12/22; F42B12/32; B; B22; B22F; B22F7/00; B22F7/06
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
75 words
A process for making molded bodies comprising discrete particles incorporated in a metallic embedding material which comprises: fixedly positioning said discrete particles to a metallic substrate; enveloping said discrete particles in a metal powder thereby providing a metallic sheath for said particles; thereafter isostatically compressing said substrate, together with said metal powder sheath and said discrete particles to produce a molded body; and sintering said molded body after it has been produced by isostatic compression.
Claim 2
Dependent Claim
75 words
A process for making molded bodies comprising discrete particles incorporated in a metallic embedding material which comprises: fixedly positioning said discrete particles to a metallic substrate; enveloping said discrete particles in a metal powder thereby providing a metallic sheath for said particles; thereafter isostatically compressing said substrate, together with said metal powder sheath and said discrete particles to produce a molded body; and sintering said molded body after it has been produced by isostatic compression.
Claim 3
Dependent Claim
23 words
A process as defined in claim 1 wherein the particles are positioned in recesses of the substrate prior to said isostatic compressing step.
Claim 4
Dependent Claim
19 words
A process as defined by claim 1 wherein the particles are positioned magnetically prior to said isostatic compression step.
Claim 5
Dependent Claim
29 words
A process as defined by claim 1 wherein the particles are positioned between the substrate and a holding sleeve and then said sleeve is removed prior to isostatic compression.
Claim 6
Dependent Claim
21 words
A process as defined by claim 1 wherein the metal powder is compacted by vibration when being introduced around said particles.
Claim 7
Dependent Claim
17 words
A process as defined by claim 1 wherein the substrate is produced by a powder metallurgy process.
Claim 8
Dependent Claim
32 words
A process as defined by claim 1 and including in addition, surrounding the molded body by a metal powder, isostatically compressing the resulting product and thereafter sintering the product of said compression.
Claim 9
Dependent Claim
22 words
A process as defined by claim 4 wherein the particles and metal powder are compacted by vibration while said sleeve is removed.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |