Patent US3198685A successfully refreshed from Google Patents.
US3198685A
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US
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Apparatus for heat sealing
Assignee: THERMOPIASTIC IND Inc
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Filing: 1961-06-16
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Granted: 1965-08-03
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Expires: 1981-06-16
Abstract
No abstract record available.
Inventors
- 👤 Kopito Louis
- 👤 Henry D Swartz
- 👤 Altman Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:08
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C65/22; B29C65/221; B29C65/222; B29C65/223; B29C65/228; B29C65/229; B29C65/38; B29C65/74; B29C65/743; B29C65/7433; B29C65/7441; B29C65/78; B29C65/7858; B29C65/7888; B29C65/7891; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/24; B29C66/244; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/70; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/812; B29C66/8122; B29C66/8126; B29C66/81264; B29C66/814; B29C66/8141; B29C66/81427; B29C66/8145; B29C66/81457; B29C66/81463; B29C66/81465; B29C66/82; B29C66/824; B29C66/8242; B29C66/83; B29C66/832; B29C66/8322; B29C66/84; B29C66/841; B29C66/843; B29C66/8432; B29C66/71; B29C66/81411; B29C66/81421; B29C66/81422; B29C66/90; B29C66/91; B29C66/914; B29C66/9141; B29C66/91421; B29C66/919; B29C66/92; B29C66/929; B29C66/94; B29C66/949; B29K; B29K2995/00; B29K2995/0037; B29K2995/007; B29L; B29L2031/00; B29L2031/48; B29L2031/4807; B29L2031/4814; B29L2031/4842; B29L2031/4864; B29L2031/712; B29L2031/7128; B29L2031/7129; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A DEVICE FOR WELDING TOGETHER REGISTERED PORTIONS OF THERMOPLASTIC SHEETS, SAID DEVICE CMPRISING A PAIR OF ELASTOMERIC PRESSURE FACES DIRECTED TOWARD EACH OTHER, A PAIR OF RIGID BACKING PLATENS ON OPPOSITE SIDES OF SAID PRESSURE FACES, ONE OF SAID BACKING PLATENS BEING CONSTRAINED FOR MOVEMENT WITH RESPECT TO THE OTHER OF SAID BACKING PLATENS FOR COMPRESSING SAID PRESSURE FACES TOWARD AND RELEASING SAID PRESSURE FACES FROM EACH OTHER, AN ENDLESS BELT INCLUDING THE OTHER OF SAID FACES AS ONE OF A SUCCESSION OF INCREMENTS, SAID ENDLESS BELT BEING CONSTRAINED FOR CYCLIC MOVEMENT, AND A HEAT SEALING ELEMENT MOVABLE WITH SAID ONE OF SAID BACKING PLATENS POSITIONED BETWEEN SAID FACES IN ORDER TO HEAT TO WELDING TEMPERATURE REGISTERED PORTIONS OF SAID THERMOPLASTIC SHEETS COMPRESSED BETWEEN SAID FACES IN CONTACT WITH SAID HEAT SEALING ELEMENT.
Claim 2
Independent Claim
133 words
A DEVICE FOR WELDING TOGETHER REGISTERED PORTIONS OF THERMOPLASTIC SHEETS, SAID DEVICE CMPRISING A PAIR OF ELASTOMERIC PRESSURE FACES DIRECTED TOWARD EACH OTHER, A PAIR OF RIGID BACKING PLATENS ON OPPOSITE SIDES OF SAID PRESSURE FACES, ONE OF SAID BACKING PLATENS BEING CONSTRAINED FOR MOVEMENT WITH RESPECT TO THE OTHER OF SAID BACKING PLATENS FOR COMPRESSING SAID PRESSURE FACES TOWARD AND RELEASING SAID PRESSURE FACES FROM EACH OTHER, AN ENDLESS BELT INCLUDING THE OTHER OF SAID FACES AS ONE OF A SUCCESSION OF INCREMENTS, SAID ENDLESS BELT BEING CONSTRAINED FOR CYCLIC MOVEMENT, AND A HEAT SEALING ELEMENT MOVABLE WITH SAID ONE OF SAID BACKING PLATENS POSITIONED BETWEEN SAID FACES IN ORDER TO HEAT TO WELDING TEMPERATURE REGISTERED PORTIONS OF SAID THERMOPLASTIC SHEETS COMPRESSED BETWEEN SAID FACES IN CONTACT WITH SAID HEAT SEALING ELEMENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |