US2711779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for severing and joining layers of thermoplastic material
Assignee: General Mills Inc
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Filing: 1950-04-17
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Granted: 1955-06-28
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Expires: 1970-04-17
Abstract
No abstract record available.
Inventors
- 👤 Alton H Carland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:23
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; B29C65/74; B29C65/743; B29C65/7439; B29C66/11; B29C66/112; B29C66/1122; B29C66/135; B29C66/40; B29C66/41; B29C66/43; B29C66/80; B29C66/83; B29C66/836; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T156/12; Y10T156/1313
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE METHOD OF CUTTING AND WELDING SUPERIMPOSED LAYERS OF THIN THERMOPLASTIC SHEET MATERIAL WHICH COMPRISES SUPERIMPOSING TWO SAID LAYERS WITH THEIR SURFACES IN PARALLEL FACE-TO-FACE ENGAGEMENT AND WITH THEIR FREE EDGES PROJECTING IN THE SAME DIRECTION, AND SIMULTANEOUSLY CUTTING SAID LAYERS ALONG A PREDETERMINED PATH SPACED INWARDLY OF SAID EDGES AND SEAMING THE UPPER AND LOWER LAYERS TO EACH OTHER ALONG THE EDGE OF SAID PATH BY MOVING A LONGITUDINAL SECTION OF ELECTRICALLY HEATED RESISTANCE WIRE LONGITUDINAL OF THE WIRE THROUGH BOTH LAYERS OF THE MATERIAL WHILE MAINTAINING THE WIRE IN THE PLANE OF SAID LAYERS AND SUBSTANTIALLY COINCIDENT WITH SAID PATH.
Claim 2
Independent Claim
102 words
THE METHOD OF CUTTING AND WELDING SUPERIMPOSED LAYERS OF THIN THERMOPLASTIC SHEET MATERIAL WHICH COMPRISES SUPERIMPOSING TWO SAID LAYERS WITH THEIR SURFACES IN PARALLEL FACE-TO-FACE ENGAGEMENT AND WITH THEIR FREE EDGES PROJECTING IN THE SAME DIRECTION, AND SIMULTANEOUSLY CUTTING SAID LAYERS ALONG A PREDETERMINED PATH SPACED INWARDLY OF SAID EDGES AND SEAMING THE UPPER AND LOWER LAYERS TO EACH OTHER ALONG THE EDGE OF SAID PATH BY MOVING A LONGITUDINAL SECTION OF ELECTRICALLY HEATED RESISTANCE WIRE LONGITUDINAL OF THE WIRE THROUGH BOTH LAYERS OF THE MATERIAL WHILE MAINTAINING THE WIRE IN THE PLANE OF SAID LAYERS AND SUBSTANTIALLY COINCIDENT WITH SAID PATH.
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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) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |