US3953250A
Expired / Lapsed
US
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Method for producing wire with a small cross-sectional area
Assignee: Monsanto Co
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Filing: 1974-10-30
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Granted: 1976-04-27
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Expires: 1994-10-30
Abstract
Abstract A method for producing wire with a small cross-sectional area and good mechanical properties is disclosed. The method comprises the steps of providing metallic coil stock of blackplate thickness with a specific microstructure and an essentially uniform cross-section, positioning in engaging relationship a pair of monolithic cutting rolls, feeding the stock into the nip formed by the rolls and then slitting the stock by shear fracture into wire with an aspect ratio of less than about 25. The method is characterized by an extended life of the cutting rolls.
Inventors
- 👤 David I. Golland
- 👤 Bernhard T. Junker
- 👤 Gary E. O'Connor
- 👤 Charles J. Runkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:29
CPC Classifications
C; C21; C21D; C21D8/00; C21D8/06; B; B21; B21C; B21C37/00; B21C37/04; B26; B26D; B26D7/00; B26D7/08; C21D2211/00; C21D2211/002; C21D2211/008; C21D2211/009; C21D2261/00; Y; Y10; Y10S; Y10S83/00; Y10S83/929; Y10S83/949; Y10S83/95; Y10T; Y10T428/00; Y10T428/12; Y10T428/12333; Y10T83/00; Y10T83/04; Y10T83/0605
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
95 words
A method for producing wire with a small cross-sectional area and good mechanical properties by slitting steel strip wherein said slitting is characterized by an extended knife life, comprising the steps of: a. providing blackplate coil stock with a homogeneous microstructure, an essentially uniform cross-section and substantially free of proeutectoid ferrite; b. positioning in engaging relationship a pair of monolithic cutting rolls; c. feeding said stock into the nip formed by said cutting rolls; and d. slitting said stock by shear fracture into wire having an aspect ratio of less than about 25 to 1.
Claim 2
Independent Claim
95 words
A method for producing wire with a small cross-sectional area and good mechanical properties by slitting steel strip wherein said slitting is characterized by an extended knife life, comprising the steps of: a. providing blackplate coil stock with a homogeneous microstructure, an essentially uniform cross-section and substantially free of proeutectoid ferrite; b. positioning in engaging relationship a pair of monolithic cutting rolls; c. feeding said stock into the nip formed by said cutting rolls; and d. slitting said stock by shear fracture into wire having an aspect ratio of less than about 25 to 1.
Claim 3
Dependent Claim
24 words
The method as recited in claim 1 wherein step (a) further comprises providing a coil of blackplate wherein said microstructure is essentially fine pearlite.
Claim 4
Dependent Claim
23 words
The method as recited in claim 1 wherein step (a) further comprises providing a coil of blackplate wherein said microstructure is essentially bainitic.
Claim 5
Dependent Claim
24 words
The method as recited in claim 1 wherein step (a) further comprises providing a coil of blackplate wherein said microstructure is essentially tempered martensite.
Claim 6
Dependent Claim
28 words
The method as recited in claim 1 wherein step (d) further comprises slitting said stock into wire with an aspect ratio of less than about 15 to 1.
Claim 7
Dependent Claim
27 words
The method as recited in claim 1 wherein step (d) further comprises slitting said stock into wire with an aspect ratio of less than 10 to 1.
Claim 8
Dependent Claim
27 words
The method as recited in claim 1 wherein step (d) further comprises slitting said stock into wire with an aspect ratio of less than 5 to 1.
Claim 9
Dependent Claim
30 words
The method as recited in claim 7 wherein step (d) further comprises slitting said stock into wire with a cross-sectional area of less than 7 × 10.sup. -4 sq. in.
Claim 10
Independent Claim
104 words
A method for producing steel wire with a cross-sectional area of less than 7 × 10 - 4 sq. in. for reinforcing rubber articles by slitting steel strip wherein said slitting is characterized by an extended knife life, comprising the steps of: a. providing blackplate coil stock with a homogeneous microstructure, an essentially uniform cross-section and substantially free of proeutectoid ferrite; b. positioning in engaging relationship a pair of monolithic cutting rolls; c. feeding said strip into the nip formed by said cutting rolls; and d. slitting said strip by shear fracture into wire having an aspect ratio of less than 5 to 1.
Claim 11
Independent Claim
104 words
A method for producing steel wire with a cross-sectional area of less than 7 × 10 - 4 sq. in. for reinforcing rubber articles by slitting steel strip wherein said slitting is characterized by an extended knife life, comprising the steps of: a. providing blackplate coil stock with a homogeneous microstructure, an essentially uniform cross-section and substantially free of proeutectoid ferrite; b. positioning in engaging relationship a pair of monolithic cutting rolls; c. feeding said strip into the nip formed by said cutting rolls; and d. slitting said strip by shear fracture into wire having an aspect ratio of less than 5 to 1.
Claim 12
Dependent Claim
23 words
The method as recited in claim 9 wherein said coil stock contains at least 0.50% carbon and a microstructure of essentially fine pearlite.
Claim 13
Dependent Claim
13 words
The method as recited in claim 10 wherein said microstructure is essentially bainitic.
Claim 14
Dependent Claim
30 words
The method as recited in claim 9 wherein said step (d) further comprises slitting said coil stock into wire with an aspect ratio of less than about 3 to 1.
Claim 15
Dependent Claim
29 words
The method as recited in claim 9 wherein step (d) further comprises slitting said coil stock into wire with an aspect ratio of less than about 1.5 to 1.
Claim 16
Independent Claim
38 words
A method for producing wire with a small cross-sectional area comprising the steps of: a. providing steel coil stock with an essentially homogeneous microstructure and substantially free of proeutectoid ferrite; b. positioning a pair of monolithic cutting rolls;
Claim 17
Independent Claim
38 words
A method for producing wire with a small cross-sectional area comprising the steps of: a. providing steel coil stock with an essentially homogeneous microstructure and substantially free of proeutectoid ferrite; b. positioning a pair of monolithic cutting rolls;
Claim 18
Dependent Claim
30 words
c. feeding said stock into the nip formed by said cutting rolls; and d. slitting said stock into wire having an aspect ratio of less than about 25 to 1.
Claim 19
Dependent Claim
30 words
c. feeding said stock into the nip formed by said cutting rolls; and d. slitting said stock into wire having an aspect ratio of less than about 25 to 1.
Claim 20
Dependent Claim
38 words
A steel wire for reinforcing rubber articles, comprising: a cross-section having an aspect ratio less than 25 to 1, an essentially homogeneous microstructure substantially free of proeutectoid ferrite, a pair of slit edges and a small cross-sectional area.
Claim 21
Dependent Claim
38 words
A steel wire for reinforcing rubber articles, comprising: a cross-section having an aspect ratio less than 25 to 1, an essentially homogeneous microstructure substantially free of proeutectoid ferrite, a pair of slit edges and a small cross-sectional area.
Claim 22
Dependent Claim
13 words
The steel wire of claim 15 wherein said microstructure is essentially fine pearlite.
Claim 23
Dependent Claim
12 words
The steel wire of claim 15 wherein said microstructure is essentially bainitic.
Claim 24
Dependent Claim
12 words
The steel wire of claim 15 wherein said microstructure is essentially martensitic.
Claim 25
Dependent Claim
15 words
The steel wire of claim 15 having at least 0.50 percent by weight of carbon.
Claim 26
Independent Claim
59 words
A method for producing steel wire by slitting steel strip, comprising the steps of: a. providing coil stock with a homogeneous microstructure, substantially free of proeutectoid ferrite; b. feeding said stock into the nip formed by a pair of cutting rolls; and c. slitting said stock into wire having an aspect ratio of less than about 25 to 1.
Claim 27
Independent Claim
59 words
A method for producing steel wire by slitting steel strip, comprising the steps of: a. providing coil stock with a homogeneous microstructure, substantially free of proeutectoid ferrite; b. feeding said stock into the nip formed by a pair of cutting rolls; and c. slitting said stock into wire having an aspect ratio of less than about 25 to 1.
References Cited (Backward Citations)
US2074713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |