US3258384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming tubular plastic members
Assignee: BABBITT PIPE CO Inc
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Filing: 1963-02-14
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Granted: 1966-06-28
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Expires: 1983-02-14
Abstract
No abstract record available.
Inventors
- 👤 Charles H Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:06
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/44; B29C33/00; B29C33/44; B29C33/48; B29C33/50; B29C33/505; B29C49/24; B29C49/26; B29C63/00; B29C63/26; B29C63/28; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/44; B29C70/446; G; G08; G08C; G08C15/00; G08C15/06; G08C15/12; B29C2949/00; B29C2949/07; B29C2949/079; B29C2949/08; B29C43/00; B29C43/02; B29C43/10; B29C43/12; B29K; B29K2061/00; B29K2061/04; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0809; B29K2105/25; B29K2105/253; B29K2105/258; B29K2309/00; B29K2309/12; B29L; B29L2023/00; B29L2023/22; B29L2031/00; B29L2031/30; B29L2031/3097; Y; Y10; Y10S; Y10S425/00; Y10S425/044
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN AN APPARATUS FOR MOLDING PLASTIC TUBULAR MEMBERS OF THE TYPE COMPRISING A TUBULAR MOLD AND AN EXPANSIBLE MANDREL INSERTABLE INTO THE MOLD, THE IMPROVEMENT WHEREIN THE MOLD HAS A RIGID NON-ROTATABLE OUTER TUBULAR CASING HAVING A FLUID INLET, AN INNER TUBULAR FLEXIBLE CASING, CLOSURE MEMBERS FOR THE ENDS OF THE OUTER CASING MEMBER, SAID CLOSURE MEMBERS HAVING CENTRAL OPENINGS THEREIN IN WHICH THE INNER CASING MEMBER IS SUPPORTED WHEREBY A PRESSURE CHAMBER IS DEFINED BETWEEN SAID CASINGS, THE MANDREL BEING POSITIONED WITHIN AND NORMALLY SPACED FROM THE INNER SURFACE OF SAID INNER CASING.
Claim 2
Dependent Claim
94 words
IN AN APPARATUS FOR MOLDING PLASTIC TUBULAR MEMBERS OF THE TYPE COMPRISING A TUBULAR MOLD AND AN EXPANSIBLE MANDREL INSERTABLE INTO THE MOLD, THE IMPROVEMENT WHEREIN THE MOLD HAS A RIGID NON-ROTATABLE OUTER TUBULAR CASING HAVING A FLUID INLET, AN INNER TUBULAR FLEXIBLE CASING, CLOSURE MEMBERS FOR THE ENDS OF THE OUTER CASING MEMBER, SAID CLOSURE MEMBERS HAVING CENTRAL OPENINGS THEREIN IN WHICH THE INNER CASING MEMBER IS SUPPORTED WHEREBY A PRESSURE CHAMBER IS DEFINED BETWEEN SAID CASINGS, THE MANDREL BEING POSITIONED WITHIN AND NORMALLY SPACED FROM THE INNER SURFACE OF SAID INNER CASING.
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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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |