US3552781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe or hose coupling
Assignee: Raufoss Ammunisjonsfabrikker AS
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Filing: 1969-05-26
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Granted: 1971-01-05
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Expires: 1989-05-26
Abstract
Abstract A FLUID COUPLING FOR THE END OF A PIPE OR HOSE. A NIPPLE MOUNTED ON THE END OF THE PIPE OR HOSE FORMS AN OPENENDED ANNULAR SPACE, WITHIN WHICH IS LOCATED A SEALING GASKET AND CLAMPING SLEEVE. A TIGHTENING NUT, WHEN THREADEDLY ENGAGED INTO THE ANNULAR SPACE, ACTS DIRECTLY (A) ON THE CLAMPING SLEEVE CAUSING IT TO GRIP THE HOSE OR PIPE AND (B) ON THE GASKET, BYPASSING THE CLAMPING SLEEVE, THE COMPRESS THE GASKET.
Inventors
- 👤 Arvid Frimann Helland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:25
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/02; F16L19/00; F16L19/06; F16L19/065; F16L19/08; F16L19/083; F16L19/086; F16L19/10; F16L19/12
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |