US3883384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hose manufacture
Assignee: Day International Corp
•
Filing: 1973-02-08
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Granted: 1975-05-13
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Expires: 1993-02-08
Abstract
Abstract A hose having an outer layer of readily deformable and vulcanizable material is protected during its manufacture by extruding a relatively thick soft flexible non-vulcanizable sheath made, for example, of rubber around the outer layer and vulcanizing the hose while the sheath remains thereon with the sheath then being removed after vulcanization of the hose.
Inventors
- 👤 Paul Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:04
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/08; F16L11/085; B; B29; B29C; B29C48/00; B29C48/15; B29C48/151; B29C48/152; B29C48/153; B29C48/03; B29C48/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
IN A METHOD OF PROTECTING A FLEXIBLE HOSE DURING ITS MANUFACTURE WHEREIN THE HOSE INCLUDES AN OUTER LAYER OF READILY DEFORMABLE VULCANIZABLE MATERIAL, THE IMPROVEMENT COMPRISING PASSING THE HOSE THROUGH AN EXTRUDING MACHINE, EXTRUDING AROUND THE HOSE A RELATIVELY THICK SOFT FLEXIBLE SHEATH MADE FROM A RUBBER MATERIAL WHICH LACKS THE NECESSARY VULCANIZING AGENTS TO RENDER THE SHEATH NON-VULCANIZABLE AND REUSEABLE, THE SHEATH BEING EXTRUDED DIRECTLY ON THE HOSE WITHOUT ANY STRUCTURAL ELEMENT THEREBETWEEN, PLACING THE HOSE CARRYING SHEATH IN A STEAM AUTOCLAVE BY COILING A PLURALITY OF LAYERS OF THE SHEATH CARRYING HOSE ATOP EACH OTHER WITHOUT ANY TEMPORARY WRAPPING AS A MEANS OF PROTECTION, VULCANIZING THE HOSE WITH THE USE OF HEAT AND EXTERNAL PRESSURE APPLIED AGAINST BOTH THE SHEATH AND THE HOSE BY UTILIZING THE PRESSURE DEVELOPED IN THE STEAM AUTOCLAVE TO ACT AGAINST THE EXTERNAL HOSE SURFACE BY BEING TRANSMITTED THROUGH THE SHEATH, MAINTAINING THE SHEATH
Claim 2
Dependent Claim
150 words
IN A METHOD OF PROTECTING A FLEXIBLE HOSE DURING ITS MANUFACTURE WHEREIN THE HOSE INCLUDES AN OUTER LAYER OF READILY DEFORMABLE VULCANIZABLE MATERIAL, THE IMPROVEMENT COMPRISING PASSING THE HOSE THROUGH AN EXTRUDING MACHINE, EXTRUDING AROUND THE HOSE A RELATIVELY THICK SOFT FLEXIBLE SHEATH MADE FROM A RUBBER MATERIAL WHICH LACKS THE NECESSARY VULCANIZING AGENTS TO RENDER THE SHEATH NON-VULCANIZABLE AND REUSEABLE, THE SHEATH BEING EXTRUDED DIRECTLY ON THE HOSE WITHOUT ANY STRUCTURAL ELEMENT THEREBETWEEN, PLACING THE HOSE CARRYING SHEATH IN A STEAM AUTOCLAVE BY COILING A PLURALITY OF LAYERS OF THE SHEATH CARRYING HOSE ATOP EACH OTHER WITHOUT ANY TEMPORARY WRAPPING AS A MEANS OF PROTECTION, VULCANIZING THE HOSE WITH THE USE OF HEAT AND EXTERNAL PRESSURE APPLIED AGAINST BOTH THE SHEATH AND THE HOSE BY UTILIZING THE PRESSURE DEVELOPED IN THE STEAM AUTOCLAVE TO ACT AGAINST THE EXTERNAL HOSE SURFACE BY BEING TRANSMITTED THROUGH THE SHEATH, MAINTAINING THE SHEATH
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US3049762A
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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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |