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Patent US3198683A successfully refreshed from Google Patents.
US3198683A
Expired / Lapsed
US
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Apparatus for sealing and folding flanged edges of containers
Assignee: Dow Chemical Co
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Filing: 1964-09-08
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Granted: 1965-08-03
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Expires: 1984-09-08
Abstract
No abstract record available.
Inventors
- 👤 Richard J Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:12
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C66/00; B29C66/003; B29C66/01; B29C66/03; B29C66/032; B29C66/0324; B29C66/034; B29C66/0342; B29C66/05; B29C66/10; B29C66/13; B29C66/131; B29C66/1312; B29C66/50; B29C66/51; B29C66/54; B29C66/542; B29C66/63; B29C66/632; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81427; B29C66/81431; B29C66/818; B29C66/8181; B29C66/81811; B29C66/8182; B29C66/81821; B29C66/83; B29C66/832; B29C66/8322; B29C65/48; B29C66/11; B29C66/112; B29C66/135; B29C66/81411; B29C66/81415; B29C66/81417; B29L; B29L2031/00; B29L2031/712
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
180 words
APPARATUS FOR SEALING AND FOLDING FLANGED EDGES OF A THERMOPLASTIC CONTAINER COMPRISING AN UPPER DIE AND A LOWER DIE ASSEMBLAGE, SAID UPPER DIE ASSEMBLAGE BEING PROVIDED WITH A CIRCULAR OPENING OF A LARGER DIAMETER THAN SAID CONTAINER AND HAVING A REDUCED DIAMETER JAW STRUCTURE ON ITS LOWER EXTREMITY, AND MEANS TO HEAT SUCH STRUCTURE, SAID LOWER DIE ASSEMBLAGE BEING PROVIDED WITH AN UPPER HEAT SEALING DIE HAVING A SIMILAR OPENING AS AND AXIAL TO SAID CIRCULAR OPENING OF SAID UPPER DIE ASSEMBLY AND HAVING A REDUCED DIAMETER JAW STRUCTURE ON ITS UPPER EXTREMITY AND MEANS TO HEAT SUCH DIE AND JAW STRUCTURE, SAID LOWER DIE ASSEMBLAGE ALSO BEING PROVIDED WITH A COOLING DIE AND AN INSULATING SECTION INTERPOSED BETWEEN SAID COOLING DIE AND SAID HEAT SEALING DIE, EACH HAVING A CIRCULAR OPENING WITH A LARGER DIAMETER THAN SAID CONTAINER THEREIN AND MEANS TO COOL SAID COOLING DIE, AND MEANS FOR CAUSING RELATIVE MOVEMENT BETWEEN THE UPPER DIE ASSEMBLAGE AND THE LOWER DIE ASSEMBLAGE WHEREBY THE FLANGED EDGES OF SAID CONTAINER MAY BE PRESSED TOGETHER TO FORM A HEAT SEALED JOINT.
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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |