US4075027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Consolidation of particulate materials
Assignee: Charcon Products Ltd
•
Filing: 1976-02-11
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Granted: 1978-02-21
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Expires: 1996-02-11
Abstract
Abstract A method of producing briquettes comprising cold pressing at relatively low pressures of a homogeneous mixture consisting of at least a fibrous material which acts as both a filler and a binder together with metallic particles such as iron borings or other machine shop waste. The fibrous material is preferably paper in pulp form. The composition may include cement and/or additional material in pulverant form or dust form selected from coke, coal, limestone and fluospar.
Inventors
- 👤 Kenneth George Knill
- 👤 Michael Kendal Bowler
- 👤 Peter Hambleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:10
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/242; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
28 words
A briquette comprising a consolidated homogeneous mixture of metallic particles and 0.5-5.0% by weight of a fibrous material which acts both as a filler and as a binder.
Claim 2
Dependent Claim
28 words
A briquette comprising a consolidated homogeneous mixture of metallic particles and 0.5-5.0% by weight of a fibrous material which acts both as a filler and as a binder.
Claim 3
Dependent Claim
16 words
A briquette according to claim 1 including a further filler in addition to said fibrous material.
Claim 4
Dependent Claim
20 words
A briquette according to claim 2 wherein said additional filler includes metallic dust of the same material as the particles.
Claim 5
Dependent Claim
23 words
A briquette according to claim 3 comprising 1-5% by weight of fibrous material and 95-99% by weight of metallic particles and metallic dust.
Claim 6
Dependent Claim
31 words
A briquette comprising a consolidated mass consisting of a homogeneous mixture of metallic particles, at least 0.5% by weight of a fibrous material and at least 5.0% by weight of cement.
Claim 7
Dependent Claim
31 words
A briquette comprising a consolidated mass consisting of a homogeneous mixture of metallic particles, at least 0.5% by weight of a fibrous material and at least 5.0% by weight of cement.
Claim 8
Dependent Claim
25 words
A briquette according to claim 5 comprising 65-94% by weight of metallic particles, 1-5% by weight of fibrous material and 5-30% by weight of cement.
Claim 9
Dependent Claim
39 words
A briquette comprising a consolidated mass consisting of a homogeneous mixture of metallic particales, metallic dust of the same material as the particles, at least 0.5% by weight of fibrous material and at least 5.0% by weight of cement.
Claim 10
Dependent Claim
39 words
A briquette comprising a consolidated mass consisting of a homogeneous mixture of metallic particales, metallic dust of the same material as the particles, at least 0.5% by weight of fibrous material and at least 5.0% by weight of cement.
Claim 11
Dependent Claim
20 words
A briquette according to claim 7 wherein 80-95% by weight of the mixture consists of metallic borings and metallic dust.
Claim 12
Dependent Claim
19 words
A briquette according to claim 3 including additional non-metallic constituents selected from the group consisting of limestone and fluospar.
Claim 13
Dependent Claim
14 words
A briquette according to claim 9 wherein said additional constituents are in dust form.
Claim 14
Dependent Claim
19 words
A briquette according to claim 10 wherein said additional constituents have particle sizes from 1/8 inch to 10 microns.
Claim 15
Dependent Claim
30 words
A briquette according to claim 9 comprising 80-95% by weight of metallic particles and metallic dust, 0.5-3% by weight of fibrous material and 4.5-17% by weight of said additional constituents.
Claim 16
Dependent Claim
24 words
A briquette according to claim 12 wherein said additional constituents comprise 0.5-2% by weight of limestone and 4-15% by weight of coke or coal.
Claim 17
Dependent Claim
20 words
A briquette according to claim 9 wherein 5-20% by weight of the mixture comprises additional constituents, fibrous material and cement.
Claim 18
Dependent Claim
40 words
A briquette according to claim 14 wherein not more than 50% by weight of the mixture consists of metallic dust, said additional constituents and fibrous material of which from 0-5% comprises the additional constituents and from 0.5-3% the fibrous material.
Claim 19
Dependent Claim
17 words
A briquette according to claim 1 wherein said metallic particles comprises iron or steel borings or filings.
Claim 20
Dependent Claim
17 words
A briquette according to claim 7 wherein said metallic particles comprises iron or steel borings or filings.
Claim 21
Dependent Claim
15 words
A briquette according to claim 1 wherein said fibrous material comprises paper in pulp form.
Claim 22
Dependent Claim
15 words
A briquette according to claim 7 wherein said fibrous material comprises paper in pulp form.
Claim 23
Dependent Claim
19 words
A briquette according to claim 3 including additional non-metallic constituents selected from the group consisting of coke and coal.
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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |