US3712841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible hose and method of making
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1968-02-06
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Granted: 1973-01-23
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Expires: 1988-02-06
Abstract
Abstract The invention relates to the process of making a flexible hose with a built-up body around a tubular metal bore support. The body of the hose made of elastomeric layers and intervening reinforcing layers, is built around the tubular metal bore support, which is flexibly and coherently constructed to serve as a mandrel, and the built-up assembly is then subjected to heat and pressure to cure the elastomeric layers, to consolidate all the layers into a unit and to permanently and inseparably bond the body to the bore support. The invention also related to a flexible hose made by the process described.
Inventors
- 👤 C Skinner
- 👤 P Sick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:11
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/088; B; B31; B31C; B31C3/00; F16L11/085; F16L11/087; F16L11/12
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |