US3608173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for securing a tube in a tubesheet
Assignee: Gulf Energy and Environmental Systems Inc
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Filing: 1968-11-19
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Granted: 1971-09-28
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Expires: 1988-11-19
Abstract
Abstract A METHOD IS DESCRIBED FOR SECURING A TUBE IN A TUBE SHEET. THE TUBE IS INSERTED IN A HOLE IN THE TUBE SHEET AND IS EXPANDED WITH A TAPER INTO CONTACT WITH THE TUBE SHEET. THE TUBE IS THEN BONDED TO THE TUBE SHEET AT ITS END AND IS FURTHER EXPANDED WITH A TAPER SUBSEQUENT TO BONDING.
Inventors
- 👤 James F Watson
- 👤 Stanley L Koutz
- 👤 Lawrence J Hull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:04
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/028; B23K9/0288; B21; B21D; B21D39/00; B21D39/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373; Y10T29/49375
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |