US3135856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for sealing tubes
Assignee: Individual
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Filing: 1962-06-27
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Granted: 1964-06-02
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Expires: 1982-06-27
Abstract
No abstract record available.
Inventors
- 👤 Cecil C Stone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:14
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/028; B23K9/0288
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
155 words
A METHOD OF SEALING THE INTERFACE BETWEEN A TUBE SHEET IN A VERTICAL POSITION AND A HORIZONTAL TUBE FITTING IN AN OPENING THROUGH THE SHEET, THE SAID OPENING BEING LOCATED A DISTANCE FROM THE CENTER OF SAID SHEET, COMPRISING ROTATING THE SHEET 360 DEGREES ABOUT ITS CENTER WHILE CAUSING THE TUBE HORIZONTALLY TO FOLLOW THE SAID OPENING ABOUT THE SAID CENTER WITHOUT EXERTING SUFFICIENT TORSION ON THE TUBE TO CAUSE IT TO SLIP WITHIN THE OPENING, SIMULTANEOUSLY FOLLOWING THE INTERFACE BETWEEN THE TUBE AND THE TUBE SHEET WITH A MOVABLE CONSUMABLE WIRE ELECTRODE WHILE PREVENTING ROTATION OF THE ELECTRODE AND HOLDING THE ELECTRODE PARALLEL TO THE TUBE AND DISPLACED FROM THE TOP OF THE TUBE ABOUT 30* TO 60* MEASURED IN A DIRECTION OPPOSED TO THE ROTATION OF THE TUBE, AND SIMULTANEOUSLY MAINTAINING A CONTINUOUS WELDING ARC BETWEEN THE ELECTRODE AND THE INTERFACE DURING THE ENTIRE 360-DEGREE ROTATION OF THE TUBE AND THE TUBE SHEET.
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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |