US3645123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making metallic wires and metallic wires prepared thereby
Assignee: Individual
•
Filing: 1969-09-02
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Granted: 1972-02-29
•
Expires: 1989-09-02
Abstract
Abstract Small watch springs are manufactured from wire rod by means of a cold-drawing operation whereby the final cross-sectional, strip dimension is obtained without cold-rolling. The cold-drawing operation aligns and maintains the alignment of the crystallographic axes lengthwise along the strip and thereby optimizes the spring properties of the cold-drawn strip.
Inventors
- 👤 Andre Auge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:50
CPC Classifications
G; G04; G04B; G04B17/00; G04B17/04; G04B17/06; G04B17/066; B; B21; B21C; B21C37/00; B21C37/04; B21C37/045; B21D; B21D53/00; B21D53/46; B21D53/50; B24; B24B; B24B19/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49579; Y10T29/49609
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
80 words
A process for manufacturing spring strip to be converted into watch springs from wire rod comprising: providing a Wire rod of cylindrical cross section preheat-treated to render it effective for use as watch spring material; cold flat drawing said wire rod to its final generally rectangular cross-sectional strip dimensions to align and maintain the alignment of its crystallographic axes in the longitudinal direction of the strip; and heat-treating the cold-drawn strip to further improve its effectiveness as a watch spring.
Claim 2
Dependent Claim
80 words
A process for manufacturing spring strip to be converted into watch springs from wire rod comprising: providing a Wire rod of cylindrical cross section preheat-treated to render it effective for use as watch spring material; cold flat drawing said wire rod to its final generally rectangular cross-sectional strip dimensions to align and maintain the alignment of its crystallographic axes in the longitudinal direction of the strip; and heat-treating the cold-drawn strip to further improve its effectiveness as a watch spring.
Claim 3
Dependent Claim
32 words
A process according to claim 1; wherein said wire rod is textural steel having a diameter between 0.8 and 2.0 mm. and a tenacity within the range of 150 to 190 kg./mm.2.
Claim 4
Dependent Claim
62 words
A process according to claim 1; wherein said wire rod is textural steel having a diameter greater than 2.0 mm. and a tenacity less than 150 kg./mm.2 and further including the step of cylindrically drawing said wire rod to a diameter of between 0.8 and 2.0 mm. and a tenacity within the range of 150 to 190 kg./mm.2 prior to said cold-drawing.
Claim 5
Dependent Claim
23 words
A process according to claim 3; wherein said cylindrical drawing decreases the cross-sectional area of said wire rod by 40 to 70 percent.
Claim 6
Dependent Claim
33 words
A process according to claim 1; wherein said wire rod is a nonoxidizable alloy having a diameter between 0.8 and 2.0 mm. and a tenacity within the range of 100 to 150 kg./mm.2.
Claim 7
Dependent Claim
63 words
A process according to claim 1; wherein said wire rod is a nonoxidizable alloy having a diameter greater than 2.0 mm. and a tenacity less than 100 kg./mm.2 and further including the step of cylindrically drawing said wire rod to a diameter of between 0.8 and 2.0 mm. and a tenacity within the range of 100 to 150 kg./mm.2 prior to said cold-drawing.
Claim 8
Dependent Claim
23 words
A process according to claim 6; wherein said cylindrical drawing decreases the cross-sectional area of said wire rod by 40 to 70 percent.
Claim 9
Dependent Claim
63 words
A process according to claim 1; further including both cylindrically drawing said wire rod to decrease its cross-sectional area by 30 to 60 percent and flat-rolling the cylindrically drawn wire rod to further decrease its cross-sectional area by 2 to 8 percent prior to said cold drawing; and wherein said cold drawing still further decreases the cross-sectional area by 30 to 60 percent.
Claim 10
Dependent Claim
23 words
A process according to claim 1; wherein said cold drawing decreases the cross-sectional area of said wire rod by 60 to 90 percent.
Claim 11
Dependent Claim
30 words
A process according to claim 1; wherein said cold drawing increases the width of said wire rod by an amount not greater than 25 percent of its precold drawn width.
Claim 12
Dependent Claim
15 words
A process according to claim 1; wherein said cold drawing is performed in several steps.
Claim 13
Dependent Claim
17 words
A process according to claim 11; further including heat treating the cold-drawn rod after each cold-drawing steps.
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) | 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 |