US3645805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of patented steel wire
Assignee: Schloemann AG
•
Filing: 1969-11-10
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Granted: 1972-02-29
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Expires: 1989-11-10
Abstract
Abstract A method for producing patented steel wire by depositing the wire in nonconcentric overlapping turns on a moving conveyor belt and controlling its temperature to convert its texture to ferrite and pearlite.
Inventors
- 👤 Bernd Hoffmann
- 👤 Georg Bollig
- 👤 Otto Dopper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
B; B21; B21C; B21C47/00; B21C47/26; B21C47/262; B21B; B21B39/00; B21B39/14; C; C21; C21D; C21D9/00; C21D9/52; C21D9/525; B21B45/00; B21B45/02; B21B2045/0236; B21B45/0203; B21B45/0209; B21B45/0215; B21B45/0224
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
33 words
A method for the production of patented steel wire as claimed in claim 1, comprising the further step of cooling the wire in air after the said size of grain has been reached.
Claim 2
Dependent Claim
33 words
A method for the production of air-patented steel wire as claimed in claim 2, the maintenance of the temperature of the wire above the austenite conversion temperature being effected in a nonoxidizing atmosphere.
Claim 3
Dependent Claim
36 words
A method for the production of air-patented steel wire as claimed in claim 2, the wire being deposited upon the conveying surface at a temperature of from 50* to 100* C. above the austenite conversion temperature.
Claim 4
Dependent Claim
32 words
A method for the production of air-patented steel wire as claimed in claim 2, comprising the step of protecting the wire from loss of heat on its way to the depositing means.
Claim 5
Dependent Claim
41 words
A method for the production of air-patented steel wire as claimed in claim 2, comprising the step of influencing the temperature of the turns of wire, in the range above the austenite conversion temperature, in the direction of keeping it constant.
Claim 6
Dependent Claim
32 words
A method for the production of air-patented steel wire as claimed in claim 2, comprising the step of counteracting any loss of heat from the turns of wire by thermally insulating them.
Claim 7
Dependent Claim
33 words
A method for the production of air-patented steel wire as claimed in claim 2, comprising the step of counteracting any loss of heat from the turns of wire by supplying heat to them.
Claim 8
Dependent Claim
54 words
A method for the production of patented steel wire as claimed in claim 1, comprising the steps of maintaining the temperature of the wire above the austenite conversion temperature in a nonoxidizing atmosphere, and depositing it upon the conveying surface at a temperature of from 50* to 100* C. above the austenite conversion temperature.
Claim 9
Dependent Claim
32 words
A method for the production of patented steel wire as claimed in claim 1, comprising the step of protecting the wire from loss of heat on its way to the depositing means.
Claim 10
Dependent Claim
40 words
A method for the production of patented steel wire as claimed in claim 1, comprising the step of supplying to the turns of wire above the austenite conversion temperature a sufficient amount of heat to counteract their loss of heat.
References Cited (Backward Citations)
US3231432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |