Patent US3348474A successfully refreshed from Google Patents.
US3348474A
Expired / Lapsed
US
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Heatsealing machines
Assignee: Triangle Package Machinery Co
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Filing: 1965-02-02
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Granted: 1967-10-24
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Expires: 1985-02-02
Abstract
No abstract record available.
Inventors
- 👤 Norman A Virta
- 👤 Richard E Zanotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:41
CPC Classifications
B; B65; B65B; B65B51/00; B65B51/10; B65B51/26; B65B51/30; B65B51/303; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C66/00; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/818; B29C66/8181; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91421; B29C66/91431; B29C66/9161; B29C66/91651; B29C66/91653; B29C66/91655; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/71; B29C66/919; B29C66/94; B29C66/944; B65B2051/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A MACHINE FOR HEATSEALING THERMOSPLASTIC SHEETS AND HAVING SEALING CYCLES AND SKIP CYCLES OF OPERATION, SAID MACHINE COMPRISING (A) MEANS FOR APPLYING PRESSURE TO SUCH SHEETS, (B) SAID MEANS INCLUDING (1) A PAIR OF PRESSURE JAWS MOVABLE DURING SEALING CYCLES OF SAID MACHINE BETWEEN (A) ONE POSITION EFFECTIVE TO CLAMP SUCH SHEETS THEREBETWEEN, AND (B) ANOTHER POSITION WHEREIN SAID JAWS ARE SPACED FROM EACH OTHER AND INEFFECTIVE TO CLAMP SAID SHEETS THEREBETWEEN, (C) SAID JAWS REMAINING IN SAID SKIP POSITION DURING OTHER CYCLES OF OPERATION OF SAID MACHINE, (D) A HEATER ELEMENT MOUNTED ON ONE OF SAID JAWS IN POSITION TO ENGAGE THE PORTION OF SAID SHEETS DISPOSED BETWEEN SAID JAWS WHEN SAID JAWS ARE DISPOSED IN SAID ONE POSITION, (E) MEANS FOR HEATING SAID HEATER ELEMENT TO A PREDETERMINED TEMPERATURE DURING EACH OF SAID SEALING CYCLES OF OPERATION, AND (F) MEANS FOR HEATING SAID HEATER ELEMENT TO A LOWER TEMPERATURE THAN SAID FIRST-MENTIONED TEMPERATURE DURING EACH OF SAID SKIP CYCLES OF OPERATION.
Claim 2
Dependent Claim
163 words
A MACHINE FOR HEATSEALING THERMOSPLASTIC SHEETS AND HAVING SEALING CYCLES AND SKIP CYCLES OF OPERATION, SAID MACHINE COMPRISING (A) MEANS FOR APPLYING PRESSURE TO SUCH SHEETS, (B) SAID MEANS INCLUDING (1) A PAIR OF PRESSURE JAWS MOVABLE DURING SEALING CYCLES OF SAID MACHINE BETWEEN (A) ONE POSITION EFFECTIVE TO CLAMP SUCH SHEETS THEREBETWEEN, AND (B) ANOTHER POSITION WHEREIN SAID JAWS ARE SPACED FROM EACH OTHER AND INEFFECTIVE TO CLAMP SAID SHEETS THEREBETWEEN, (C) SAID JAWS REMAINING IN SAID SKIP POSITION DURING OTHER CYCLES OF OPERATION OF SAID MACHINE, (D) A HEATER ELEMENT MOUNTED ON ONE OF SAID JAWS IN POSITION TO ENGAGE THE PORTION OF SAID SHEETS DISPOSED BETWEEN SAID JAWS WHEN SAID JAWS ARE DISPOSED IN SAID ONE POSITION, (E) MEANS FOR HEATING SAID HEATER ELEMENT TO A PREDETERMINED TEMPERATURE DURING EACH OF SAID SEALING CYCLES OF OPERATION, AND (F) MEANS FOR HEATING SAID HEATER ELEMENT TO A LOWER TEMPERATURE THAN SAID FIRST-MENTIONED TEMPERATURE DURING EACH OF SAID SKIP CYCLES OF OPERATION.
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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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |