US3923946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite materials
Assignee: Ugine Carbone
•
Filing: 1974-05-20
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Granted: 1975-12-02
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Expires: 1994-05-20
Abstract
Abstract A rigid composite material based on metal particles and a polymer binder present in an amount of between 5 and 20% by volume and adapted for use in the production of precision components.
Inventors
- 👤 Rene Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:06
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/0094
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
100 words
A PROCESS FOR MANUFACTURING A RIGID COMPOSITE MATERIAL, COMPRISING PREPARING AN INTIMATE MIXTURE OF PARTICLES OF NONPOROUS METAL OF HIGH MECHANICAL STRENGTH ANDHIGH DUCTILITY AND AN ORGANIC THEMOSETTING OR THERMOPLASTIC RESINOUS PLASTICS MATERIAL WHICH HAS HIGH MECHANICAL STRENGTH AND STRONG ADHESION TO THE METAL PARTICLES IN A PROPORTION BY VALUME CORRESPONDING TO 5 TO 20%, MOLDING THE RESULTING MIXTURE IN A CLOSED MOLD UNDER A PRESSURE OF AT LEAST TWICE THE ELASTIC LIMIT OF THE METAL, OPENING THE MOLD, HEATING THE COMPACT THUS OBTAINED TO A SUFFICIENT HIGH TEMPERATURE TO MELT AND, OPTIONALLY, POLYMERIZE THE PLASTIC BINDER, FOLLOWED BY COOLING.
Claim 2
Dependent Claim
100 words
A PROCESS FOR MANUFACTURING A RIGID COMPOSITE MATERIAL, COMPRISING PREPARING AN INTIMATE MIXTURE OF PARTICLES OF NONPOROUS METAL OF HIGH MECHANICAL STRENGTH ANDHIGH DUCTILITY AND AN ORGANIC THEMOSETTING OR THERMOPLASTIC RESINOUS PLASTICS MATERIAL WHICH HAS HIGH MECHANICAL STRENGTH AND STRONG ADHESION TO THE METAL PARTICLES IN A PROPORTION BY VALUME CORRESPONDING TO 5 TO 20%, MOLDING THE RESULTING MIXTURE IN A CLOSED MOLD UNDER A PRESSURE OF AT LEAST TWICE THE ELASTIC LIMIT OF THE METAL, OPENING THE MOLD, HEATING THE COMPACT THUS OBTAINED TO A SUFFICIENT HIGH TEMPERATURE TO MELT AND, OPTIONALLY, POLYMERIZE THE PLASTIC BINDER, FOLLOWED BY COOLING.
Claim 3
Dependent Claim
18 words
A process as claimed in claim 1, wherein compression is sufficient to subject the metal particles to cold-working.
Claim 4
Dependent Claim
17 words
A process as claimed in claim 1, wherein the molding pressure is between 100 and 1000 N/mm2.
Claim 5
Dependent Claim
14 words
A process as claimed in claim 1, wherein the binder is a thermosetting resin.
Claim 6
Dependent Claim
18 words
A process as claimed in claim 1 wherein the binder is introduced into the mixture in powder form.
Claim 7
Dependent Claim
19 words
A process as claimed in claim 1, wherein the mixture consists of metal particles coated with a liquid binder.
References Cited (Backward Citations)
US3341642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |