Patent US3616818A successfully refreshed from Google Patents.
US3616818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crush resistant conduit
Assignee: Ilc Industries Inc
•
Filing: 1968-12-09
•
Granted: 1971-11-02
•
Expires: 1988-12-09
Abstract
Abstract DISCLOSED IS A CONDUIT OR DUCT FOR FEEDING LIFE SUPPORT GAS, SUCH AS OXYGEN, TO OR FROM PORTIONS OF ASPACEUNIT THE CONDUIT COMPRISES A PLURALITY OF SIDE-BY SIDE HELICAL COILS, EACH SURROUNDED BY A FLEXIBLE OPEN MESH SLEEVE. THE SLEEVE ARE JOINED BY LONGITUDINAL STITCHING AND ARE SECURED TO THE COILS BY MEANS OF AN ADHESIVE. SURROUNDING THE COILS AND SLEEVES IS A FLEXIBLE GAS IMPERMEABLE COVER. THE CONDUIT OR DUCT, WHILE QUITE FLEXIBLE, IS EXTREMELY RESISTANT TO BEING CRUSHED.
Inventors
- 👤 Melvin C Case
- 👤 George P Durney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:49
CPC Classifications
B; B64; B64G; B64G6/00; F; F16; F16L; F16L11/00; F16L11/04; F16L11/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |