US3258386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosealing device
Assignee: Millennium Petrochemicals Inc
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Filing: 1963-01-30
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Granted: 1966-06-28
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Expires: 1983-01-30
Abstract
No abstract record available.
Inventors
- 👤 James E Blythe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:34
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/76; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/21; B29C66/23; B29C66/232; B29C66/234; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/71; B29C66/73; B29C66/737; B29C66/7371; B29C66/73711; B29C66/73713; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/812; B29C66/8126; B29C66/81261; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/814; B29C66/8141; B29C66/81433; B29C66/81435; B29C66/832
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A THERMOSEALING DEVICE FOR PRODUCING PEELABLE SEALS THROUGH TWO OR MORE LAYERS OF THERMOPLASTIC FILM, SAID DEVICE INCLUDING A SEALING SURFACE CONSISTING OF A PLURALITY OF RELATIVELY CLOSELY SPACED PROJECTIONS, EACH OF SAID PROJECTIONS BEING IN THE FORM OF A PYRAMID HAVING AN ENLARGED BASE PORTION, UPWARDLY INCLINED SIDE WALLS AND A FLAT UPPER EXTREMITY OF SHARPLY REDUCED AREA, THE HEIGHT OF EACH PYRAMID BEING ON THE ORDER OF .037", THE FLAT UPPER EXTREMITIES BEING ON THE ORDER OF .005" SQUARE, SAID PYRAMIDS BEING SPACED APART ON THE ORDER OF 1/32" FROM CENTER TO CENTER OF ADJACENT FLAT UPPER EXTREMITIES AND THE SIDE WALLS OF EACY PYRAMID SLOPING UPWARDLY AT AN ANGLE OF APPROXIMATELY 30* FROM THE VERTICAL THE SPACES BETWEEN SAID PROJECTIONS BEING FILLED WITH A MATERIAL OF SUBSTANTIALLY LOWER THERMAL CONDUCTIVITY THAN THAN OF SAID PROJECTIONS, SAID FILLER MATERIAL CONSTITUTING A CONTINUOUS SMOOTH SURFACE FLUSH WITH THE UPPER EXTREMITIES OF SAID SPACED PROJECTIONS.
Claim 2
Dependent Claim
155 words
A THERMOSEALING DEVICE FOR PRODUCING PEELABLE SEALS THROUGH TWO OR MORE LAYERS OF THERMOPLASTIC FILM, SAID DEVICE INCLUDING A SEALING SURFACE CONSISTING OF A PLURALITY OF RELATIVELY CLOSELY SPACED PROJECTIONS, EACH OF SAID PROJECTIONS BEING IN THE FORM OF A PYRAMID HAVING AN ENLARGED BASE PORTION, UPWARDLY INCLINED SIDE WALLS AND A FLAT UPPER EXTREMITY OF SHARPLY REDUCED AREA, THE HEIGHT OF EACH PYRAMID BEING ON THE ORDER OF .037", THE FLAT UPPER EXTREMITIES BEING ON THE ORDER OF .005" SQUARE, SAID PYRAMIDS BEING SPACED APART ON THE ORDER OF 1/32" FROM CENTER TO CENTER OF ADJACENT FLAT UPPER EXTREMITIES AND THE SIDE WALLS OF EACY PYRAMID SLOPING UPWARDLY AT AN ANGLE OF APPROXIMATELY 30* FROM THE VERTICAL THE SPACES BETWEEN SAID PROJECTIONS BEING FILLED WITH A MATERIAL OF SUBSTANTIALLY LOWER THERMAL CONDUCTIVITY THAN THAN OF SAID PROJECTIONS, SAID FILLER MATERIAL CONSTITUTING A CONTINUOUS SMOOTH SURFACE FLUSH WITH THE UPPER EXTREMITIES OF SAID SPACED PROJECTIONS.
References Cited (Backward Citations)
US2730161A
Cited
US3017315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |