Patent US2530221A successfully refreshed from Google Patents.
US2530221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for pressure and heat sealing of plastics
Assignee: Individual
•
Filing: 1945-03-03
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Granted: 1950-11-14
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Expires: 1965-03-03
Abstract
No abstract record available.
Inventors
- 👤 Sydney E Bender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:07
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/432; B29C66/4322; B29C66/433; B29C66/47; B29C66/472; B29C66/81; B29C66/818; B29C66/8182; B29C66/81821; B29C66/8187; B29C66/81871
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN A DEVICE FOR PERMANENTLY HEAT-SEALING TWO OR MORE ITEMS OF THERMOPLASTIC MATERIAL, TWO COOPERATING PRESSURE MEMBERS HAVING PRECISELY COACTING PRESSURE SURFACES, THE PRESSURE SURFACE OF ONE OF THE MEMBERS BEING SUBSTANTIALLY AN EXACT NEGATIVE REPRODUCTION OF THE PRESSURE SURFACE OF THE OTHER MEMBER, HEAT ABSORBING AND HEAT DISSIPATING ELEMENTS FOR INTERPOSITION BETWEEN THE PRESSURE SURFACES AND THE OUTER FACES OF THE THERMOPLASTIC ITEMS TO BE HEAT-SEALED, AND MEANS FOR APPLYING HEAT TO THESE ITEMS WHILE BEING HELD BETWEEN SAID ELEMENTS UNDER PRESSURE BY SAID SURFACES.
Claim 2
Dependent Claim
86 words
IN A DEVICE FOR PERMANENTLY HEAT-SEALING TWO OR MORE ITEMS OF THERMOPLASTIC MATERIAL, TWO COOPERATING PRESSURE MEMBERS HAVING PRECISELY COACTING PRESSURE SURFACES, THE PRESSURE SURFACE OF ONE OF THE MEMBERS BEING SUBSTANTIALLY AN EXACT NEGATIVE REPRODUCTION OF THE PRESSURE SURFACE OF THE OTHER MEMBER, HEAT ABSORBING AND HEAT DISSIPATING ELEMENTS FOR INTERPOSITION BETWEEN THE PRESSURE SURFACES AND THE OUTER FACES OF THE THERMOPLASTIC ITEMS TO BE HEAT-SEALED, AND MEANS FOR APPLYING HEAT TO THESE ITEMS WHILE BEING HELD BETWEEN SAID ELEMENTS UNDER PRESSURE BY SAID SURFACES.
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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) | 1953-11-13 | 1954-05-15 | 1954-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-13 | 1958-05-15 | 1958-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-13 | 1962-05-15 | 1962-11-14 | $7700.00 | Window Closed / Lapsed |