US3866664A - Mold for use in continuous-casting of metals - Google Patents
Mold for use in continuous-casting of metals Download PDFInfo
- Publication number
- US3866664A US3866664A US365872A US36587273A US3866664A US 3866664 A US3866664 A US 3866664A US 365872 A US365872 A US 365872A US 36587273 A US36587273 A US 36587273A US 3866664 A US3866664 A US 3866664A
- Authority
- US
- United States
- Prior art keywords
- passages
- strips
- mold
- liner
- backup plates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 title claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 19
- 238000009749 continuous casting Methods 0.000 title claims abstract description 12
- 150000002739 metals Chemical class 0.000 title abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000000717 retained effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000029154 Narrow face Diseases 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- -1 or Firm-Walter P Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/055—Cooling the moulds
Definitions
- the stri s carry studs hlCh 164/283 R 283 s 283 MS 82 s1 83 280 p 249/155 i extend through the backup plates. Nuts are threadedly engaged with the studs and drawn up tightly.
- the water-circulation passages are unobstructed and all [56] References C'ted have the same hydraulic diameters, which are constant UNITED STATES PATENTS throughout the length of the passages. Hence water 1,000,213 8/1911 Trimble 249/219 R X flowing through each passage has the same velocity.
- a conventional mold used in continuous-casting includes a liner of metal which conducts heat readily (usually copper) and backup plates (usually steel) fastened to the outside of the liner. Water-circulation passages are formed between the liner and backup plates. Both ends of the liner are open. Liquid metal is poured continuously into the upper end, and a casting, which at this stage has only a thin solidified skin and a liquid core, emerges from the lower end.
- a number of ways are known for fastening the backup plates to the liner. For example, studs may be welded or threaded into the liner, and nuts may be threadedly engaged with the studs outside the backup plates.
- An object of our invention is to provide a continuouscasting mold which embodies improved means fastening the backup plates to the liner.
- a further object is to provide, in a mold, a structurally sound connection between a copper liner and steel backup plates, which connection also enables a uniform unobstructed water flow to be maintained through the water-circulation passages.
- a more specific object is to provide a mold in which the water-circulation passages are formed between ribs in the liner faces, and the backup plates are fastened with metal strips inserted in certain of the passages and studs fixed to the strips, but in which all passages have equal hydraulic diameters constant throughout their lengths to afford uniform velocity of cooling water.
- FIG. 1 is a partially diagrammatic perspective view, not to scale, of a continuous-casting mold in which is incorporated our improved means fastening the backup plates to the liner;
- FIG. 2 is a fragmentary vertical section on line II-II of FIG. 1;
- FIG. 3 is a fragmentary horizontal section on line III- -III of FIG. 2.
- FIG. 1 shows a continuous-casting mold which may be conventional apart from our improved fastening means.
- the mold illustrated is for casting relatively wide slabs, and comprises an open-ended one-piece liner 10, a pair of relatively wide backup plates 12 fastened to the wide faces of the liner, and a pair of relatively narrow backup plates 13 fastened to the narrow faces.
- the backup plates have the usual water inlets and outlets 14 and 15 near the lower and upper edges respectively.
- the particular mold illustrated is only one example of a mold to which we may apply our fastening means.
- the mold could have a four-piece liner, or it could be of square cross section for casting billets, etc.
- the outside faces of the liner 10 have series of vertical ribs 18, 18a.
- the backup plate 12 abuts ribs 18 to define therewith a plurality of parallel unobstructed water-circulation passages 19.
- the ribs 18a have opposed laterally directed lips 20.
- the ribs 19a and strips 21 define additional unobstructed water-circulation passages 19a. Water flows through passages 19 and 19a to cool the liner and solidify a skin on the casting.
- the strip 21 in each passage may be continuous through the length of the passage, or it may be formed of a plurality of closely abutting segments, as FIG. 2 shows.
- the latter arrangement has an advantage that it affords less stiffness and allows the mold to expand and contract more readily.
- the strips carry studs 22, which may be welded thereto or threaded into tapped holes.
- the studs extend through the backup plates 12 or 13.
- Nuts 23 are threadedly engaged with the studs outside the backup plates and drawn up tightly to fasten the latter to the liner.
- the strips and studs may be of any suitable metal, such as steel, since the choice is not critical. Normally friction alone holds the strips in place, but optionally the strips may carry knife edges 24 which bite into the softer metal of the liner lips.
- the passages 19 are all of equal width and equal depth.
- the passages 19a which accommodate the strips 21, are wider than passages '19 and of less depth.
- the dimensions of passages 19a are chosen to provide the same hydraulic diameter as passages 19.
- the hydraulic diameters are constant throughout the length of each passage. Hence water flowing through each passage 19a has the same velocity as the water flowing through each passage 19.
- the hydraulic diameter is defined as follows:
- the fastening means of our invention is simple and economical.
- the strips 21 are retained in the passages 19a without welding. We obtain further economy by stud-welding the studs 22 to the strips, in preference to threading them in place. At the same time the fastening means retains the backup plates securely to the liner.
- a continuous-casting mold which includes an open-ended liner of heat conductive metal, and backup plates fastened to the outside faces of said liner, said liner having a series of vertical ribs in its outside faces defining with said backup plates a plurality of parallel unobstructed water-circulation passages, the combination therewith of improved means fastening said backup plates to said liner, said means comprising opposed laterally directed lips formed on certain of said ribs, metal strips inserted in these passages under said lips, the latter ribs defining with said strips additional unobstructed water-circulation passages, studs fixed to said strips and extending through said backup plates, and nuts threadedly engaged with said studs outside said backup plates.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims (6)
Priority Applications (20)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US365872A US3866664A (en) | 1973-06-01 | 1973-06-01 | Mold for use in continuous-casting of metals |
NL7406535A NL7406535A (en) | 1973-06-01 | 1974-05-15 | |
DE2423481A DE2423481C2 (en) | 1973-06-01 | 1974-05-15 | Continuous casting mold |
ZA00743118A ZA743118B (en) | 1973-06-01 | 1974-05-15 | Mold for use in continuous casting of metals |
AU69043/74A AU476639B2 (en) | 1973-06-01 | 1974-05-16 | Mold for use in continuous casting of metals |
AT409274A AT334557B (en) | 1973-06-01 | 1974-05-17 | CONTINUOUS CASTING GRILL |
IN1128/CAL/1974A IN141759B (en) | 1973-06-01 | 1974-05-23 | |
BE144745A BE815528A (en) | 1973-06-01 | 1974-05-24 | LINGOTIER FOR USE IN CONTINUOUS METAL CASTING |
FR7418369A FR2231452B1 (en) | 1973-06-01 | 1974-05-28 | |
BR4399/74A BR7404399D0 (en) | 1973-06-01 | 1974-05-30 | CASTING TEMPLATE CONTINUES |
CA201,291A CA1017924A (en) | 1973-06-01 | 1974-05-30 | Mold for use in continuous casting of metals |
AR254020A AR199155A1 (en) | 1973-06-01 | 1974-05-31 | MOLD TO BE USED IN THE CONTINUOUS EMPTYING OF METALS |
SU742033302A SU799632A3 (en) | 1973-06-01 | 1974-05-31 | Crystallizer for continuous metal casting |
IT68732/74A IT1011903B (en) | 1973-06-01 | 1974-05-31 | MOLD FOR CASTING MACHINES WITH METAL TINUE |
RO7479007A RO65531A (en) | 1973-06-01 | 1974-05-31 | CASTING MOLD CONTINUES METALS |
JP49061761A JPS5760105B2 (en) | 1973-06-01 | 1974-05-31 | |
ES426861A ES426861A1 (en) | 1973-06-01 | 1974-06-01 | Mold for use in continuous-casting of metals |
PL1974171602A PL89992B1 (en) | 1973-06-01 | 1974-06-01 | |
GB2449174A GB1449090A (en) | 1973-06-01 | 1974-06-03 | Mould for use in continuous casting of metals |
YU01507/74A YU150774A (en) | 1973-06-01 | 1974-06-30 | Device for fixing underlayer plates onto an insertion of an iron mold for continuously casting metal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US365872A US3866664A (en) | 1973-06-01 | 1973-06-01 | Mold for use in continuous-casting of metals |
Publications (1)
Publication Number | Publication Date |
---|---|
US3866664A true US3866664A (en) | 1975-02-18 |
Family
ID=23440722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US365872A Expired - Lifetime US3866664A (en) | 1973-06-01 | 1973-06-01 | Mold for use in continuous-casting of metals |
Country Status (20)
Country | Link |
---|---|
US (1) | US3866664A (en) |
JP (1) | JPS5760105B2 (en) |
AR (1) | AR199155A1 (en) |
AT (1) | AT334557B (en) |
AU (1) | AU476639B2 (en) |
BE (1) | BE815528A (en) |
BR (1) | BR7404399D0 (en) |
CA (1) | CA1017924A (en) |
DE (1) | DE2423481C2 (en) |
ES (1) | ES426861A1 (en) |
FR (1) | FR2231452B1 (en) |
GB (1) | GB1449090A (en) |
IN (1) | IN141759B (en) |
IT (1) | IT1011903B (en) |
NL (1) | NL7406535A (en) |
PL (1) | PL89992B1 (en) |
RO (1) | RO65531A (en) |
SU (1) | SU799632A3 (en) |
YU (1) | YU150774A (en) |
ZA (1) | ZA743118B (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2620656A1 (en) * | 1975-05-16 | 1976-12-02 | Siderurgie Fse Inst Rech | THIN-WALLED COCIL |
US4182397A (en) * | 1978-07-03 | 1980-01-08 | Allis-Chalmers Corporation | Continuous casting mold and means for securing mold liners therein |
US4518027A (en) * | 1980-03-29 | 1985-05-21 | Kabushiki Kaisha Kobe Seiko Sho | Mold adapted to house electromagnetic stirrer coil for continuous casting equipment |
US5117895A (en) * | 1987-12-23 | 1992-06-02 | Voest-Alpine Industrieanlagenbau Gesellschaft M.B.H. | Continuous casting mold arrangement |
US5931216A (en) * | 1996-06-14 | 1999-08-03 | Alusuisse Technology & Management Ltd. | Adjustable continuous casting mold |
EP0965401A1 (en) * | 1998-06-15 | 1999-12-22 | Sms Schloemann-Siemag Aktiengesellschaft | Mould wall for a continuous casting mould |
EP0987073A1 (en) * | 1998-09-17 | 2000-03-22 | Sms Schloemann-Siemag Aktiengesellschaft | Mould wall for a continuous casting machine |
US6173756B1 (en) * | 1998-07-02 | 2001-01-16 | Sms Schloemann-Siemag Ag | Broad side element for a slab mold |
US6419005B1 (en) | 2000-06-29 | 2002-07-16 | Vöest-Alpine Services and Technologies Corporation | Mold cassette and method for continuously casting thin slabs |
US6742571B2 (en) * | 2001-05-31 | 2004-06-01 | Japan Engineering Network Co., Ltd. | Build-up mold for continuous casting |
US20050150629A1 (en) * | 2004-01-14 | 2005-07-14 | Thomas Rolf | Liquid-cooled ingot mold |
CN105108084A (en) * | 2015-09-15 | 2015-12-02 | 西峡龙成特种材料有限公司 | Liquid cooling narrow-face copper plate for metal continuous casting crystallizer |
CN105108078A (en) * | 2015-09-15 | 2015-12-02 | 西峡龙成特种材料有限公司 | Fastening structure for copper plate of metal continuous casting crystallizer |
CN109909463A (en) * | 2019-04-19 | 2019-06-21 | 钢铁研究总院华东分院 | A kind of big cross section side, the assembly of rectangular thin-wall crystallizer copper pipe, application method |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3978910A (en) * | 1975-07-07 | 1976-09-07 | Gladwin Floyd R | Mold plate cooling system |
US4622043A (en) * | 1978-06-19 | 1986-11-11 | Rca Corporation | Textile dyeing process: multicolor pattern dyeing of tufted nylon carpet |
DE3411359A1 (en) * | 1984-03-28 | 1985-10-31 | Mannesmann AG, 4000 Düsseldorf | CONTINUOUS CHOCOLATE FOR ROUND OR BLOCK CROSS SECTIONS, ESPECIALLY FOR THE POURING OF LIQUID STEEL |
DE4131829C2 (en) * | 1990-10-02 | 1993-10-21 | Mannesmann Ag | Liquid-cooled mold for the continuous casting of steel strands in slab format |
JPH0518711A (en) * | 1991-07-16 | 1993-01-26 | Mitsubishi Electric Corp | Position detection method and its device |
FR2685229B1 (en) * | 1991-12-20 | 1995-05-24 | Peugeot | LOST MODEL MOLDING PROCESS AND REFRIGERANT ELEMENT FOR THE IMPLEMENTATION OF THIS PROCESS. |
US5513691A (en) * | 1994-02-02 | 1996-05-07 | Sms Concast Inc. | Mold for continuous casting and method of making the mold |
DE19835111A1 (en) * | 1998-08-04 | 2000-02-10 | Schloemann Siemag Ag | Mold wall of a continuous caster |
DE102010047392A1 (en) * | 2010-10-02 | 2012-04-05 | Egon Evertz Kg (Gmbh & Co.) | continuous casting |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1000213A (en) * | 1910-07-02 | 1911-08-08 | Charles P Trimble | Clamping device for building constructions. |
US2428660A (en) * | 1945-03-24 | 1947-10-07 | American Brass Co | Water-cooled slab mold |
US2767448A (en) * | 1952-06-27 | 1956-10-23 | Babcock & Wilcox Co | Continuous casting mold |
US3125786A (en) * | 1964-03-24 | Construction of moolbs used for the continuous | ||
US3464485A (en) * | 1966-05-10 | 1969-09-02 | Mannesmann Ag | Water-cooled plate mold for continuous casting |
US3473601A (en) * | 1966-07-05 | 1969-10-21 | Mannesmann Ag | Liquid-cooled plate mold for continuous casting of high-melting metals |
US3595302A (en) * | 1967-05-11 | 1971-07-27 | Schloemann Ag | Cooling structure for continuous-casting mold |
US3662814A (en) * | 1968-08-24 | 1972-05-16 | Concast Ag | Mold for continuous casting of metal |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU129304A1 (en) * | 1959-11-18 | 1959-11-30 | А.И. Векке | Molds for continuous casting of flat ingots |
-
1973
- 1973-06-01 US US365872A patent/US3866664A/en not_active Expired - Lifetime
-
1974
- 1974-05-15 DE DE2423481A patent/DE2423481C2/en not_active Expired
- 1974-05-15 NL NL7406535A patent/NL7406535A/xx not_active Application Discontinuation
- 1974-05-15 ZA ZA00743118A patent/ZA743118B/en unknown
- 1974-05-16 AU AU69043/74A patent/AU476639B2/en not_active Expired
- 1974-05-17 AT AT409274A patent/AT334557B/en not_active IP Right Cessation
- 1974-05-23 IN IN1128/CAL/1974A patent/IN141759B/en unknown
- 1974-05-24 BE BE144745A patent/BE815528A/en not_active IP Right Cessation
- 1974-05-28 FR FR7418369A patent/FR2231452B1/fr not_active Expired
- 1974-05-30 CA CA201,291A patent/CA1017924A/en not_active Expired
- 1974-05-30 BR BR4399/74A patent/BR7404399D0/en unknown
- 1974-05-31 SU SU742033302A patent/SU799632A3/en active
- 1974-05-31 AR AR254020A patent/AR199155A1/en active
- 1974-05-31 JP JP49061761A patent/JPS5760105B2/ja not_active Expired
- 1974-05-31 RO RO7479007A patent/RO65531A/en unknown
- 1974-05-31 IT IT68732/74A patent/IT1011903B/en active
- 1974-06-01 PL PL1974171602A patent/PL89992B1/pl unknown
- 1974-06-01 ES ES426861A patent/ES426861A1/en not_active Expired
- 1974-06-03 GB GB2449174A patent/GB1449090A/en not_active Expired
- 1974-06-30 YU YU01507/74A patent/YU150774A/en unknown
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125786A (en) * | 1964-03-24 | Construction of moolbs used for the continuous | ||
US1000213A (en) * | 1910-07-02 | 1911-08-08 | Charles P Trimble | Clamping device for building constructions. |
US2428660A (en) * | 1945-03-24 | 1947-10-07 | American Brass Co | Water-cooled slab mold |
US2767448A (en) * | 1952-06-27 | 1956-10-23 | Babcock & Wilcox Co | Continuous casting mold |
US3464485A (en) * | 1966-05-10 | 1969-09-02 | Mannesmann Ag | Water-cooled plate mold for continuous casting |
US3473601A (en) * | 1966-07-05 | 1969-10-21 | Mannesmann Ag | Liquid-cooled plate mold for continuous casting of high-melting metals |
US3595302A (en) * | 1967-05-11 | 1971-07-27 | Schloemann Ag | Cooling structure for continuous-casting mold |
US3662814A (en) * | 1968-08-24 | 1972-05-16 | Concast Ag | Mold for continuous casting of metal |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2620656A1 (en) * | 1975-05-16 | 1976-12-02 | Siderurgie Fse Inst Rech | THIN-WALLED COCIL |
US4009749A (en) * | 1975-05-16 | 1977-03-01 | Institut De Recherches De La Siderurgie Francaise (Irsid) | Thin-walled mold for the continuous casting of molten metal |
US4182397A (en) * | 1978-07-03 | 1980-01-08 | Allis-Chalmers Corporation | Continuous casting mold and means for securing mold liners therein |
US4518027A (en) * | 1980-03-29 | 1985-05-21 | Kabushiki Kaisha Kobe Seiko Sho | Mold adapted to house electromagnetic stirrer coil for continuous casting equipment |
US5117895A (en) * | 1987-12-23 | 1992-06-02 | Voest-Alpine Industrieanlagenbau Gesellschaft M.B.H. | Continuous casting mold arrangement |
US5931216A (en) * | 1996-06-14 | 1999-08-03 | Alusuisse Technology & Management Ltd. | Adjustable continuous casting mold |
EP0965401A1 (en) * | 1998-06-15 | 1999-12-22 | Sms Schloemann-Siemag Aktiengesellschaft | Mould wall for a continuous casting mould |
US6173756B1 (en) * | 1998-07-02 | 2001-01-16 | Sms Schloemann-Siemag Ag | Broad side element for a slab mold |
EP0987073A1 (en) * | 1998-09-17 | 2000-03-22 | Sms Schloemann-Siemag Aktiengesellschaft | Mould wall for a continuous casting machine |
US6419005B1 (en) | 2000-06-29 | 2002-07-16 | Vöest-Alpine Services and Technologies Corporation | Mold cassette and method for continuously casting thin slabs |
US6742571B2 (en) * | 2001-05-31 | 2004-06-01 | Japan Engineering Network Co., Ltd. | Build-up mold for continuous casting |
US20050150629A1 (en) * | 2004-01-14 | 2005-07-14 | Thomas Rolf | Liquid-cooled ingot mold |
US7143811B2 (en) * | 2004-01-14 | 2006-12-05 | Km Europa Metal Ag | Liquid-cooled ingot mold |
CN105108084A (en) * | 2015-09-15 | 2015-12-02 | 西峡龙成特种材料有限公司 | Liquid cooling narrow-face copper plate for metal continuous casting crystallizer |
CN105108078A (en) * | 2015-09-15 | 2015-12-02 | 西峡龙成特种材料有限公司 | Fastening structure for copper plate of metal continuous casting crystallizer |
CN105108078B (en) * | 2015-09-15 | 2017-04-05 | 西峡龙成特种材料有限公司 | The fastening structure of metal continuous casting crystallizer copper coin |
CN109909463A (en) * | 2019-04-19 | 2019-06-21 | 钢铁研究总院华东分院 | A kind of big cross section side, the assembly of rectangular thin-wall crystallizer copper pipe, application method |
Also Published As
Publication number | Publication date |
---|---|
YU150774A (en) | 1982-02-28 |
ATA409274A (en) | 1976-05-15 |
ES426861A1 (en) | 1976-09-01 |
JPS5760105B2 (en) | 1982-12-17 |
AU476639B2 (en) | 1976-09-30 |
NL7406535A (en) | 1974-12-03 |
JPS5053234A (en) | 1975-05-12 |
IT1011903B (en) | 1977-02-10 |
BE815528A (en) | 1974-11-25 |
DE2423481A1 (en) | 1975-01-02 |
AU6904374A (en) | 1975-11-20 |
FR2231452B1 (en) | 1979-09-28 |
IN141759B (en) | 1977-04-16 |
CA1017924A (en) | 1977-09-27 |
DE2423481C2 (en) | 1983-10-13 |
SU799632A3 (en) | 1981-01-23 |
GB1449090A (en) | 1976-09-08 |
AT334557B (en) | 1976-01-25 |
BR7404399D0 (en) | 1975-01-07 |
FR2231452A1 (en) | 1974-12-27 |
ZA743118B (en) | 1975-05-28 |
RO65531A (en) | 1980-02-15 |
AR199155A1 (en) | 1974-08-08 |
PL89992B1 (en) | 1976-12-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: USX CORPORATION, A CORP. OF DE, STATELESS Free format text: MERGER;ASSIGNOR:UNITED STATES STEEL CORPORATION (MERGED INTO);REEL/FRAME:005060/0960 Effective date: 19880112 |
|
AS | Assignment |
Owner name: ACUTUS MOLD, INC., A CORP. OF MI Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:USX CORPORATION;REEL/FRAME:005280/0828 Effective date: 19890731 |
|
AS | Assignment |
Owner name: AG INDUSTRIES, INC., PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ACUTUS MOLD, INC.;REEL/FRAME:008328/0942 Effective date: 19961104 |