Patent US3153374A successfully refreshed from Google Patents.
US3153374A
Expired / Lapsed
US
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Carton forming machine
Assignee: Primerica Inc
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Filing: 1962-07-31
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Granted: 1964-10-20
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Expires: 1982-07-31
Abstract
No abstract record available.
Inventors
- 👤 Borkmann Frank Frederick
- 👤 Jakob John Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:54
CPC Classifications
B; B31; B31B; B31B50/00; B31B50/004; B31B2100/00; B31B2120/00; B31B2120/30; B31B50/74; B31B50/76; B31B50/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A MACHINE FOR FOLDING AND BOTTOM SEALING A COLLAPSED CARTON HAVING BOTTOM CLOSURE PANELS WHICH ARE COATED ON BOTH SURFACES THEREOF WITH A THERMOPLASTIC MATERIAL COMPRISING MEANS FOR OPENING SAID CARTON, MEANS FOR HEATING ONLY SELECTED PORTIONS OF SAID BOTTOM CLOSURE PANELS ON BOTH SURFACES THEREOF WHICH ARE TO BE BROUGHT INTO FACE-TO-FACE CONTACT IN THE SEALED BOTTOM CLOSURE TO THEREBY SOFTEN THE THERMOPLASTIC COATING THEREON, MEANS FOR FOLDING SAID BOTTOM CLOSURE PANELS ACROSS THE BOTTOM END OF SAID OPENED CARTON, AND MEANS FOR PRESSING SAID FOLDED BOTTOM CLOSURE PANELS TOGETHER TO BRING SAID SELECTED HEATED PORTIONS INTO MUTUAL ENGAGEMENT AND FOR HOLDING THEM IN PRESSURED ENGAGEMENT UNTIL SAID HEATED THERMOPLASTIC MATERIAL HAS SET TO FORM A SEALED BOTTOM CLOSURE.
Claim 2
Dependent Claim
120 words
A MACHINE FOR FOLDING AND BOTTOM SEALING A COLLAPSED CARTON HAVING BOTTOM CLOSURE PANELS WHICH ARE COATED ON BOTH SURFACES THEREOF WITH A THERMOPLASTIC MATERIAL COMPRISING MEANS FOR OPENING SAID CARTON, MEANS FOR HEATING ONLY SELECTED PORTIONS OF SAID BOTTOM CLOSURE PANELS ON BOTH SURFACES THEREOF WHICH ARE TO BE BROUGHT INTO FACE-TO-FACE CONTACT IN THE SEALED BOTTOM CLOSURE TO THEREBY SOFTEN THE THERMOPLASTIC COATING THEREON, MEANS FOR FOLDING SAID BOTTOM CLOSURE PANELS ACROSS THE BOTTOM END OF SAID OPENED CARTON, AND MEANS FOR PRESSING SAID FOLDED BOTTOM CLOSURE PANELS TOGETHER TO BRING SAID SELECTED HEATED PORTIONS INTO MUTUAL ENGAGEMENT AND FOR HOLDING THEM IN PRESSURED ENGAGEMENT UNTIL SAID HEATED THERMOPLASTIC MATERIAL HAS SET TO FORM A SEALED BOTTOM CLOSURE.
References Cited (Backward Citations)
US2181816A
Cited
US2669815A
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US2770175A
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US2887021A
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US2989827A
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US3002328A
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US3064542A
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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) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |