Patent US471610A successfully refreshed from Google Patents.
Patent US3240845A successfully refreshed from Google Patents.
US3240845A
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Method for the production of container blanks
Assignee: Honeywell International Inc
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Filing: 1962-11-23
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Granted: 1966-03-15
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 Walter D Voelker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:30
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/20; B29C44/30; B29C44/306; B29L; B29L2007/00; B29L2009/00; Y; Y10; Y10S; Y10S220/00; Y10S220/902; Y10S229/00; Y10S229/93; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/24512
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A METHOD FOR THE PRODUCTION OF CONTAINER BLANKS FORMED OF SEMI-RIGID POLYURETHANE FOAM SANDWICH MATERIAL WHICH METHOD COMPRISES FORMING A SANDWICH OF PARTIALLY CURED SEMI-RIGID POLYURETHANE FOAM BETWEEN A PAIR OF FACING SHEETS, SCORING A CLOSELY SPACED APART PAIR OF GROOVES IN EACH FACE OF THE FOAM SANDWICH, EACH OF SAID GROOVES BEING DISPOSED OPPOSITE A CORRESPONDING GROOVE ON THE OPPOSING SANDWICH FACE AND EXTENDED TO PROVIDE A GROOVE DEPTH LESS THAN ABOUT ONE THIRD OF THE THICKNESS OF THE FULLY CURED SANDWICH, AND SUBSEQUENTLY HEATING THE THUS SCORED FOAN SANDWICH TO COMPLETE THE CURING OF THE POLYURETHANE FOAM; SAID GROOVES SERVING AS FOLD LINES FOR THE BLANK SO THAT UPON FOLDING OF THE BLANK THE SAID GROOVES FROM A BEAD CONTAINER CORNER INTEGRALLY CONNECTED TO THE POLYURETHANE SANDWICH CONTAINER WALS BY A BRIDGE OF THE POLYURETHANE FOAM REMAINING BETWEEN THE OPPOSING GROOVES.
Claim 2
Independent Claim
143 words
A METHOD FOR THE PRODUCTION OF CONTAINER BLANKS FORMED OF SEMI-RIGID POLYURETHANE FOAM SANDWICH MATERIAL WHICH METHOD COMPRISES FORMING A SANDWICH OF PARTIALLY CURED SEMI-RIGID POLYURETHANE FOAM BETWEEN A PAIR OF FACING SHEETS, SCORING A CLOSELY SPACED APART PAIR OF GROOVES IN EACH FACE OF THE FOAM SANDWICH, EACH OF SAID GROOVES BEING DISPOSED OPPOSITE A CORRESPONDING GROOVE ON THE OPPOSING SANDWICH FACE AND EXTENDED TO PROVIDE A GROOVE DEPTH LESS THAN ABOUT ONE THIRD OF THE THICKNESS OF THE FULLY CURED SANDWICH, AND SUBSEQUENTLY HEATING THE THUS SCORED FOAN SANDWICH TO COMPLETE THE CURING OF THE POLYURETHANE FOAM; SAID GROOVES SERVING AS FOLD LINES FOR THE BLANK SO THAT UPON FOLDING OF THE BLANK THE SAID GROOVES FROM A BEAD CONTAINER CORNER INTEGRALLY CONNECTED TO THE POLYURETHANE SANDWICH CONTAINER WALS BY A BRIDGE OF THE POLYURETHANE FOAM REMAINING BETWEEN THE OPPOSING GROOVES.
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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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |