Patent US3170970A successfully refreshed from Google Patents.
US3170970A
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Method for making plastic articles
Assignee: OI Glass Inc
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Filing: 1962-01-23
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Granted: 1965-02-23
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Expires: 1982-01-23
Abstract
No abstract record available.
Inventors
- 👤 Wanda J Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:03
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/58; B29C2949/00; B29C2949/07; B29C2949/0715; B29C49/02; B29C49/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN A METHOD OF MAKING A PLASTIC ARTICLE FROM A PARISON SURROUNDING AN AIR PERMEABLE CORE HAVING A CENTRAL AXIAL RECESS, THE STEPS OF DISPOSING THE CORE AND THE PARISON INTERIORLY OF A BLOW MOLD, SAID CORE RECESS HAVING AN AXIALLY MOVABLE AIR TUBE INSERTED THEREINTO AND HAVING TRANSVERSE OPENINGS, AND SIMULTANEOUSLY INJECTING AIR INTO THE TUBE AND MOVING THE AIR TUBE IN SAID RECESS TO PROGRESSIVELY INFLATE THE PARISON BY AIR PASSING THROUGH THE TUBE OPENINGS AND HENCE RADIALLY THROUGH SAID CORE.
Claim 2
Dependent Claim
83 words
IN A METHOD OF MAKING A PLASTIC ARTICLE FROM A PARISON SURROUNDING AN AIR PERMEABLE CORE HAVING A CENTRAL AXIAL RECESS, THE STEPS OF DISPOSING THE CORE AND THE PARISON INTERIORLY OF A BLOW MOLD, SAID CORE RECESS HAVING AN AXIALLY MOVABLE AIR TUBE INSERTED THEREINTO AND HAVING TRANSVERSE OPENINGS, AND SIMULTANEOUSLY INJECTING AIR INTO THE TUBE AND MOVING THE AIR TUBE IN SAID RECESS TO PROGRESSIVELY INFLATE THE PARISON BY AIR PASSING THROUGH THE TUBE OPENINGS AND HENCE RADIALLY THROUGH SAID CORE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |