US3902892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous ferrous metal impregnated with magnesium metal
Assignee: Farley Inc
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Filing: 1974-03-26
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Granted: 1975-09-02
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Expires: 1994-03-26
Abstract
Abstract A composition of matter comprising a mass of ferrous scrap pieces compressed together in random orientation forming a network of interlocking pieces has been prepared. The ferrous metal network has a density of 1.2 to 4.0 g/cc, a porosity of 50% to 85% and a short transverse tensile strength (S.T.T.S.) of at least 2 psi, preferably at least 2.5 psi. This ferrous metal network may be impregnated with magnesium in amount from 18 to 55% by weight of the impregnated body. The magnesium impregnated body is useful for treating high melting metals such as ferrous metal to reduce the sulphur content or to produce nodular iron.
Inventors
- 👤 Jairaj Easwaran
- 👤 George S Foerster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:37
CPC Classifications
C; C21; C21C; C21C1/00; C21C1/02; C21C1/10; C21C7/00; C21C7/04; C21C7/064; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/248; Y; Y02; Y02P; Y02P10/00; Y02P10/20; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216; Y10T428/12222; Y10T428/12424; Y10T428/12444; Y10T428/12479
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
184 words
A composition of matter comprising a mass of scrap ferrous metal pieces and magnesium, said scrap pieces having individual sizes in which the length of the pieces is from one-eighth to 9 inches, the width is from one sixty-fourth to 1 inch and the thickness is from 1 to 100 mils, a mass of said scrap pieces having a bulk density before compression of from 0.1 to 1.0 g/cc, said scrap pieces compressed together in a haphazard order forming a metal network of interlocking pieces and voids between said pieces which forms a labyrinth of interstices throughout said network, said metal network having a density of from 1.2 to 4.0 g/cc, the interstices in said network before infiltration forming a porosity of from 50 to 85%, said metal network having a short transverse tensile strength of at least 2 psi, said magnesium filling said interstices, said magnesium being selected from the group consisting of magnesium metal and magnesium alloy, the amount of magnesium in said interstices being from 18 to 55% by weight of the total weight of said metal network containing the magnesium.
Claim 2
Dependent Claim
184 words
A composition of matter comprising a mass of scrap ferrous metal pieces and magnesium, said scrap pieces having individual sizes in which the length of the pieces is from one-eighth to 9 inches, the width is from one sixty-fourth to 1 inch and the thickness is from 1 to 100 mils, a mass of said scrap pieces having a bulk density before compression of from 0.1 to 1.0 g/cc, said scrap pieces compressed together in a haphazard order forming a metal network of interlocking pieces and voids between said pieces which forms a labyrinth of interstices throughout said network, said metal network having a density of from 1.2 to 4.0 g/cc, the interstices in said network before infiltration forming a porosity of from 50 to 85%, said metal network having a short transverse tensile strength of at least 2 psi, said magnesium filling said interstices, said magnesium being selected from the group consisting of magnesium metal and magnesium alloy, the amount of magnesium in said interstices being from 18 to 55% by weight of the total weight of said metal network containing the magnesium.
Claim 3
Dependent Claim
15 words
Composition according to claim 1 in which said metal network is impregnated with magnesium metal.
Claim 4
Dependent Claim
16 words
Composition according to claim 1 in which said metal network is impregnated with a magnesium alloy.
Claim 5
Dependent Claim
15 words
Composition according to claim 1 in which the scrap pieces employed are scrap steel turnings.
Claim 6
Dependent Claim
15 words
PRODUCT ACCORDING TO CLAIM 1 IN WHICH THE FERROUS METAL SCRAP PIECES ARE STEEL SCRAP.
Claim 7
Dependent Claim
14 words
Product according to claim 1 in which the ferrous metal pieces are steel turnings.
References Cited (Backward Citations)
US3459541A
Cited
US3634066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |