Patent US3222728A successfully refreshed from Google Patents.
US3222728A
Expired / Lapsed
US
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Apparatus for making molded flexible hose
Assignee: Fred T Roberts and Co
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Filing: 1962-07-18
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Granted: 1965-12-14
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Expires: 1982-07-18
Abstract
No abstract record available.
Inventors
- 👤 Fred T Roberts
- 👤 Robert E Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:54
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/20; B29D; B29D23/00; B29D23/18; F; F16; F16L; F16L11/00; F16L11/04; F16L11/11; F16L11/115; B29K; B29K2021/00; B29L; B29L2023/00; B29L2023/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
APPARATUS FOR MAKING MOLDED CORRUGATED FLEXIBEL HOSE WHICH COMPRISES A TRANSVERSELY CORRUGATED MANDREL HAVING LONGITUDINALLY FLUTED AREAS OF REDUCED DIAMETER ADAPTED TO BE POSITIONED WITHIN A TUBULAR HOSE BODY TO BE CURED, A MOLD HAVING A COMPLEMENTARY, TRANSVERELY CORRUGATED CAVITY FORMED IN A PLURALITY OF LONITUDINAL SECTIONS, SAID MANDREL WITH SAID HOSE BODY THEREON BEING POSITIONED IN MOLDING RELATION WITHIN SAID MOLD WITH THE TRANSVERSE CORRUGATIONS ON THE MANDREL NESTED IN THE COMPLEMENTARY CORRUGATIONS IN SAID CAVITY AND WITH ITS FLUTED AREAS ADJACENT TO AND ALIGNED WITH THE JUNCTIONS OF SAID MOLD SECTIONS.
Claim 2
Dependent Claim
93 words
APPARATUS FOR MAKING MOLDED CORRUGATED FLEXIBEL HOSE WHICH COMPRISES A TRANSVERSELY CORRUGATED MANDREL HAVING LONGITUDINALLY FLUTED AREAS OF REDUCED DIAMETER ADAPTED TO BE POSITIONED WITHIN A TUBULAR HOSE BODY TO BE CURED, A MOLD HAVING A COMPLEMENTARY, TRANSVERELY CORRUGATED CAVITY FORMED IN A PLURALITY OF LONITUDINAL SECTIONS, SAID MANDREL WITH SAID HOSE BODY THEREON BEING POSITIONED IN MOLDING RELATION WITHIN SAID MOLD WITH THE TRANSVERSE CORRUGATIONS ON THE MANDREL NESTED IN THE COMPLEMENTARY CORRUGATIONS IN SAID CAVITY AND WITH ITS FLUTED AREAS ADJACENT TO AND ALIGNED WITH THE JUNCTIONS OF SAID MOLD SECTIONS.
References Cited (Backward Citations)
US2903744A
Cited
US2780273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |