US3605232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of lining flexible metal l's
Assignee: Individual
•
Filing: 1969-02-17
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Granted: 1971-09-20
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Expires: 1989-02-17
Abstract
Abstract THE METHOD OF LINING A 90* EBLOW MADE OF FLEXIBLE, METAL CONVOLUTE TUBING INITIALLY BENDS A LENGTH OF FLEXIBLE CONVOLUTE TUBING INTO A 90* L-SHAPE, A WIRE BRAID COVERING IS THEN STRETCHED OVER THE OUTSIDE OF THE L AND WELDED IN PLACE HOLDING THE TUBING IN THE L-SHAPE, FILLING THE INTERNAL CONVOLUTES WITH THE FLEXIBLE RESILIENT MATERIAL, REMOVING EXCESS FLEXIBLE MATERIAL TO EXPOSE THE APEX OF THE METAL CONVOLUTES, INSERTING A REMOVABLE MANDREL IN THE L, FILLING THE ANNULUS AROUND THE MANDREL WITH ADDITIONAL FLEXIBLE RESILIENT MATERIAL, AND THEN CURING ALL THE FLEXIBLE MATERIAL TO BOND THE TWO MATERIAL TOGETHER AND TO THE METAL.
Inventors
- 👤 Vernon C Hines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:09
CPC Classifications
F; F16; F16L; F16L43/00; F16L43/001; B; B05; B05D; B05D7/00; B05D7/22; B05D7/222; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/28; F16L11/00; F16L11/14; F16L11/15; B05D3/00; B05D3/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49428; Y10T29/49435; Y10T29/49444; Y10T29/49826; Y10T29/49888
Claims Analysis
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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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |