US2735797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of heat sealing and severing
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:55
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/13; B29C66/137; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C65/74; B29C66/03; B29C66/034; B29C66/0346; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C66/47; B29C66/472; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24488
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
88 words
THE METHOD OF REINFORCING AND SERVING A PREVIOUSLY FORMED NARROW TRANSVERSE HEAT SEAL ACROSS A PLURALITY OF THERMOPLASTIC FUSIBLE SHEETS WHICH CONSISTS IN BRINGING INTO CONTACT LONGITUDINALLY OF SAID HEAT SEAL AND WITHIN ITS SIDE EDGES A HEATED SHARP EDGED TOOL, MELTING THROUGH THE PLURALITY OF SHEETS AT SAID SEAL TO SERVE THE SHEETS AND SINULTANEOUSLY FORM A MOLTEN BEADED EDGE EACH EDGE OF THE LINE OF SEVER, AND REMOVING THE SHARP EDGES TOOL FROM THE LINE OF SEVER AND ALLOWING SAID MOLTEN BEADED EDGES TO COOL SOLIDIFY.
Claim 2
Independent Claim
88 words
THE METHOD OF REINFORCING AND SERVING A PREVIOUSLY FORMED NARROW TRANSVERSE HEAT SEAL ACROSS A PLURALITY OF THERMOPLASTIC FUSIBLE SHEETS WHICH CONSISTS IN BRINGING INTO CONTACT LONGITUDINALLY OF SAID HEAT SEAL AND WITHIN ITS SIDE EDGES A HEATED SHARP EDGED TOOL, MELTING THROUGH THE PLURALITY OF SHEETS AT SAID SEAL TO SERVE THE SHEETS AND SINULTANEOUSLY FORM A MOLTEN BEADED EDGE EACH EDGE OF THE LINE OF SEVER, AND REMOVING THE SHARP EDGES TOOL FROM THE LINE OF SEVER AND ALLOWING SAID MOLTEN BEADED EDGES TO COOL SOLIDIFY.
Claim 3
Dependent Claim
67 words
IN A PLASTIC PRODUCT HAVING A PLURALITY OF THERMOPLASTIC SHEETS, AN EDGE WELD COMPRISING A FUSED BAND ADJACENT THE OUTER EDGE OF SAID WELD, SAID BAND HAVING A THICKNESS SLIGHTLY LESS THAN THE COMPOSITE THICKNESS OF SAID PLURALITY OF PLASTIC SHEETS, AND A FURTHER SEAL AT THE EXTREME OUTER EDGE OF SAID WELD HAVING A BEADED CONFIGURATION OF THICKNESS GREATER THAN THE FIRST MENTIONED NARROW BAND SEAL.
Claim 4
Dependent Claim
67 words
IN A PLASTIC PRODUCT HAVING A PLURALITY OF THERMOPLASTIC SHEETS, AN EDGE WELD COMPRISING A FUSED BAND ADJACENT THE OUTER EDGE OF SAID WELD, SAID BAND HAVING A THICKNESS SLIGHTLY LESS THAN THE COMPOSITE THICKNESS OF SAID PLURALITY OF PLASTIC SHEETS, AND A FURTHER SEAL AT THE EXTREME OUTER EDGE OF SAID WELD HAVING A BEADED CONFIGURATION OF THICKNESS GREATER THAN THE FIRST MENTIONED NARROW BAND SEAL.
References Cited (Backward Citations)
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Cited
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Cited
US2430496A
Cited
US2638963A
Cited
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Cited
US2682910A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |