US3126797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic lined fiber containers
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
•
Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:06
CPC Classifications
B; B65; B65D; B65D3/00; B65D3/22; B29; B29C; B29C49/00; B29C49/24; B29C63/00; B29C63/26; B65D3/10; B29C2949/00; B29C2949/07; B29C2949/0715; B29C49/02; B29C49/06; B31; B31B; B31B2105/00; B31B2120/00; B31B2120/40; B31B2120/402; B31B2120/404; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1313
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN THE METHOD OF MANUFACTURING PLASTIC LINED DRUMS THE STEPS OF: INITIALLY FORMING A TUBULAR SHELL HAVING TOP AND BOTTOM OPEN ENDS; CONFINING SAID SHELL SUCH THAT A PASSAGEWAY IS PROVIDED INTO THE SHELL INTERIOR; EXTRUDING A TUBULAR PLASTIC PARISON INTO SAID PASSAGEWAY; SEALING THE PARISON BOTTOM END AND TOP END WHILE MAINTAINING AN AIR INLET OPENING EXPOSED TO THE INTERIOR OF THE PARISON; INTRODUCING AIR UNDER PRESSURE THROUGH SAID AIR INLET OPENING INTO THE INTERIOR OF SAID PARISON TO BLOW THE PARISON OUTWARDLY AND EXPAND IT INTO ENGAGEMENT WITH THE INTERIOR OF THE SHELL; AND THEN COMPLETING THE BOTTOM AND TOP CLOSURES SELECTED FOR SAID SHELL.
Claim 2
Dependent Claim
107 words
IN THE METHOD OF MANUFACTURING PLASTIC LINED DRUMS THE STEPS OF: INITIALLY FORMING A TUBULAR SHELL HAVING TOP AND BOTTOM OPEN ENDS; CONFINING SAID SHELL SUCH THAT A PASSAGEWAY IS PROVIDED INTO THE SHELL INTERIOR; EXTRUDING A TUBULAR PLASTIC PARISON INTO SAID PASSAGEWAY; SEALING THE PARISON BOTTOM END AND TOP END WHILE MAINTAINING AN AIR INLET OPENING EXPOSED TO THE INTERIOR OF THE PARISON; INTRODUCING AIR UNDER PRESSURE THROUGH SAID AIR INLET OPENING INTO THE INTERIOR OF SAID PARISON TO BLOW THE PARISON OUTWARDLY AND EXPAND IT INTO ENGAGEMENT WITH THE INTERIOR OF THE SHELL; AND THEN COMPLETING THE BOTTOM AND TOP CLOSURES SELECTED FOR SAID SHELL.
References Cited (Backward Citations)
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US2727673A
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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) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |