US3342648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of tubing
Assignee: Westinghouse Electric Corp
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Filing: 1963-04-22
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Granted: 1967-09-19
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Expires: 1983-04-22
Abstract
No abstract record available.
Inventors
- 👤 Zucker David
- 👤 Robert A Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:21
CPC Classifications
B; B21; B21B; B21B23/00; B21C; B21C1/00; B21C1/16; B21C1/22; B21C1/24; B21J; B21J5/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/49812; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12812; Y10T428/12861; Y10T428/12903; Y10T428/12951
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A METHOD OF PRODUCING RELATIVELY SMALLER SIZED TUBING OF A PREDETERMINED CROSS-SECTIONAL CONFIGURATION FROM A RELATIVELY LARGER SIZED TUBULAR STOCK SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM AND ITS ALLOYS AND TITANIUM AND ITS ALLOYS, THE STEPS COMPRISING CLADDING THE INTERIOR AND EXTERIOR SURFACES OF SAID TUBULAR STOCK WITH TUBULAR CLAD MEMBERS SELECTED FROM THE GROUP CONSISTING OF IRON AND ITS ALLOYS AND COPPER TO FORM A WORKPIECE, SWAGING SAID WORKPIECE TO CAUSE INTIMATE CONTACT OF ADJACENT SURFACE OF SAID STOCK AND SAID TUBULAR CLAD MEMBERS, PASSING SAID WORKPIECE THROUGH AN OPENING OF THE DESIRED CROSS-SECTIONAL CONFIGURATION, ANNEALING SAID WORKPIECE IN AIR AFTER PASSING SAID WORKPIECE THROUGH SAID OPENING AT LEAST ONCE, SAID ANNEALING STEP BEING PERFORMED AT A TEMPERATURE BETWEEN 1300 AND 1550*F. FOR A TIME FROM 5 TO 60 MINUTES, SAID ANNEALING TIME BEING DEPENDENT UPON THE ANNEALING TEMPERATURE, AND REMOVING SAID CLAD MATERIAL.
Claim 2
Dependent Claim
147 words
IN A METHOD OF PRODUCING RELATIVELY SMALLER SIZED TUBING OF A PREDETERMINED CROSS-SECTIONAL CONFIGURATION FROM A RELATIVELY LARGER SIZED TUBULAR STOCK SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM AND ITS ALLOYS AND TITANIUM AND ITS ALLOYS, THE STEPS COMPRISING CLADDING THE INTERIOR AND EXTERIOR SURFACES OF SAID TUBULAR STOCK WITH TUBULAR CLAD MEMBERS SELECTED FROM THE GROUP CONSISTING OF IRON AND ITS ALLOYS AND COPPER TO FORM A WORKPIECE, SWAGING SAID WORKPIECE TO CAUSE INTIMATE CONTACT OF ADJACENT SURFACE OF SAID STOCK AND SAID TUBULAR CLAD MEMBERS, PASSING SAID WORKPIECE THROUGH AN OPENING OF THE DESIRED CROSS-SECTIONAL CONFIGURATION, ANNEALING SAID WORKPIECE IN AIR AFTER PASSING SAID WORKPIECE THROUGH SAID OPENING AT LEAST ONCE, SAID ANNEALING STEP BEING PERFORMED AT A TEMPERATURE BETWEEN 1300 AND 1550*F. FOR A TIME FROM 5 TO 60 MINUTES, SAID ANNEALING TIME BEING DEPENDENT UPON THE ANNEALING TEMPERATURE, AND REMOVING SAID CLAD MATERIAL.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |