US4163827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a wrapped innoculation rod suitable for modifying the composition of molten metals
Assignee: Caterpillar Inc
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Filing: 1978-01-23
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Granted: 1979-08-07
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Expires: 1998-01-23
Abstract
Abstract {PG,1 A method of making a filled tubular article for controlled insertion into a molten metal includes extruding a treating material through an apparatus to form an elongated core element and wrapping the core element in a protective casing. Preferably, the casing of the article includes a helically wrapped ribbon-like strip.
Inventors
- 👤 John R. Nieman
- 👤 S. David Sanders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:14
CPC Classifications
B; B65; B65H; B65H81/00; B65H81/06; B65H81/08; B22; B22D; B22D1/00; C; C21; C21C; C21C7/00; C21C7/0056; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2936; Y10T428/294; Y10T428/2951
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
141 words
A filled tubular inoculation rod (12) for controlled insertion into a molten metal for altering same, comprising: an extruded elongated core element means (16) for treating the molten metal, said core element means (16) including a particulate mixture of a treating agent (28) and a binding agent (30) consolidated in a preselected range of about 85% to 95% theoretical density, said treating agent (28) comprising about 90% or more of the total weight of said core element means (16) and said binding agent (30) comprising about 1% to not more than 10% of the total weight of said core element means (16); and casing means (20) for substantially covering the entire exterior surface of said core element means (16) and containing said core element means (16), said casing means (20) being intimately and helically wrapped about said core element means (16).
Claim 2
Dependent Claim
141 words
A filled tubular inoculation rod (12) for controlled insertion into a molten metal for altering same, comprising: an extruded elongated core element means (16) for treating the molten metal, said core element means (16) including a particulate mixture of a treating agent (28) and a binding agent (30) consolidated in a preselected range of about 85% to 95% theoretical density, said treating agent (28) comprising about 90% or more of the total weight of said core element means (16) and said binding agent (30) comprising about 1% to not more than 10% of the total weight of said core element means (16); and casing means (20) for substantially covering the entire exterior surface of said core element means (16) and containing said core element means (16), said casing means (20) being intimately and helically wrapped about said core element means (16).
Claim 3
Dependent Claim
29 words
The article (12) of claim 1 wherein said binding agent (30) is selected from the group consisting of beeswax, sodium silicate, resin, casein, and organic plastic material including polyurethane.
Claim 4
Dependent Claim
33 words
The article (12) of claim 1 wherein said casing means (20) includes a ribbon-like strip (52) of metal selected from the group consisting of a ferrous metal, aluminum, titanium, copper, and alloys thereof.
Claim 5
Dependent Claim
33 words
The article (12) of claim 1 wherein said core element means (16) further includes a lubricating agent (31) comprising about 0.3% to 2% of the total weight of said core element means (16).
Claim 6
Dependent Claim
14 words
The article (12) of claim 4 wherein said lubricating agent (31) is zinc stearate.
Claim 7
Independent Claim
85 words
A method of making a filled tubular inoculation rod (12) for controlled insertion into a molten metal for altering same, comprising: Step (a) mixing a particulate treating agent (28) and a binding agent (30) and forming a treating material (24); Step (b) extruding the treating material (24) from an extruding apparatus (14) and forming a continuously elongating core element (16); and Step (c) helically wrapping said elongating core element (16) in a protective casing as the core element (16) extends from the extruding apparatus (14).
Claim 8
Independent Claim
85 words
A method of making a filled tubular inoculation rod (12) for controlled insertion into a molten metal for altering same, comprising: Step (a) mixing a particulate treating agent (28) and a binding agent (30) and forming a treating material (24); Step (b) extruding the treating material (24) from an extruding apparatus (14) and forming a continuously elongating core element (16); and Step (c) helically wrapping said elongating core element (16) in a protective casing as the core element (16) extends from the extruding apparatus (14).
Claim 9
Dependent Claim
42 words
The method of claim 1 wherein Step (a) includes mixing a lubricating agent (31) with the particulate treating agent (28) and the binding agent (30) and forming said treating material (24) to promote extrusion of the treating material (24) in Step (b).
Claim 10
Dependent Claim
42 words
The method of claim 1 wherein Step (c) includes helically wrapping the elongating core element (16) by a rotatable wrapping device (18); and including supporting and guiding said elongating core element (16) between the extruding apparatus (14) and the wrapping device (18).
Claim 11
Dependent Claim
15 words
The method of claim 1 including heating the treating material (24) prior to Step (b).
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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) | 1982-08-06 | 1983-02-05 | 1983-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-06 | 1987-02-05 | 1987-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-06 | 1991-02-05 | 1991-08-07 | $7700.00 | Window Closed / Lapsed |