Patent US3737979A successfully refreshed from Google Patents.
US3737979A
Expired / Lapsed
US
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Method of manufacturing longitudinally welded strips of different thicknesses and widths
Assignee: American Brass Co
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Filing: 1971-08-05
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Granted: 1973-06-12
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Expires: 1991-08-05
Abstract
Abstract A composite flat metal strip having portions of different thicknesses is produced by welding together strips of the different thicknesses along their adjacent edges and by rolling both thicknesses of the composite welded strip to a final stepped cross-section.
Inventors
- 👤 A Rakich
- 👤 L Lozano
- 👤 J Nelmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:33
CPC Classifications
B; B21; B21B; B21B1/00; B21B1/08; B21B1/0805; B21B1/22; B21B15/00; B21B2015/0092; B21B2267/00; B21B2267/02; B21B2267/06; B21B2267/065
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
74 words
The method of continuously producing a composite metal strip having a stepped cross-section of at least two substantially different thicknesses which comprises placing two metal strips of different thicknesses in longitudinal edge to edge relationship, welding said strips together along their adjacent edges thus forming a strip of a first stepped cross-section, and rolling both thicknesses of the resulting composite welded strip to reduce the thickness of both strips to a final stepped crosssection.
Claim 2
Independent Claim
74 words
The method of continuously producing a composite metal strip having a stepped cross-section of at least two substantially different thicknesses which comprises placing two metal strips of different thicknesses in longitudinal edge to edge relationship, welding said strips together along their adjacent edges thus forming a strip of a first stepped cross-section, and rolling both thicknesses of the resulting composite welded strip to reduce the thickness of both strips to a final stepped crosssection.
Claim 3
Dependent Claim
28 words
The method according to claim 1 wherein each thickness of the composite welded strip is subjected to the same percentage reduction in cross-sectional area during the rolling operation.
Claim 4
Dependent Claim
68 words
The method according to claim 1 wherein the strip of greater thickness is formed with an edge portion of reduced thickness, said edge portion being in thickness at least half as thick and in width less than half the width of the remainder of the strip, and a separate strip of substantially the same thickness as said reduced edge portion is welded thereto in edge to edge relationship.
Claim 5
Dependent Claim
15 words
The method according to claim 1 wherein the two metal strips are of dissimilar compositions.
References Cited (Backward Citations)
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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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |