US3140971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat sealing channel
Assignee: Package Machinery Co
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Filing: 1962-03-14
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Granted: 1964-07-14
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Expires: 1982-03-14
Abstract
No abstract record available.
Inventors
- 👤 Crescenzo Francis
- 👤 Earle J Fredette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:26
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/80; B29C66/83; B29C66/834; B29C66/8341; B29C66/83421; B29C66/83423; B29C65/00; B29C65/02; B29C65/18; B29C65/78; B29C65/7858; B29C65/7861; B29C65/787; B29C65/7873; B29C66/004; B29C66/0042; B29C66/0044; B29C66/00441; B29C66/01; B29C66/03; B29C66/034; B29C66/0342; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/81; B29C66/812; B29C66/8122; B29C66/814; B29C66/8141; B29C66/81431; B29C66/84; B29C66/843; B29C66/849; B65; B65B; B65B51/00; B65B51/10; B65B51/18; B29C66/70; B29C66/71; B29C66/818; B29C66/8181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A SEALING CHANNEL COMPRISING A PAIR OF VERTICALLY DISPOSED PULLEYS, A HEATED PLATE AND A REFRIGERATED PLATE DISPOSED BETWEEN SAID PULLEYS, SAID PLATES BEING IN SIDEBY-SIDE RELATION AND EACH HAVING A VERTICAL SURFACE DISPOSED IN A COMMON PLANE, A POLYTETRAFLUOROETHYLENE IMPREGNATED GLASS FIBER BELT TRAINED AROUND SAID PULLEYS, SAID PULLEYS BEING DISPOSED SO THAT THE BELT LIES AGAINST SAID VERTICAL SURFACES, SAID BELT BEING ADVANCEABLE ACROSS SAID SURFACES, SAID PLATES HAVING ALIGNED HORIZONTAL GROOVES IN SAID VERTICAL SURFACES AND SAID BELT HAVING GUIDE MEANS PROJECTING THEREFROM AND ENTERING SAID GROOVES TO MAINTAIN THE BEST IN A GIVEN PATH OF TRAVEL RELATIVE TO SAID PLATES REGARDLESS OF TEMPERATURE GRADIENTS EXISTING LONGITUDINALLY AND LATERALLY OF SAID BELT.
Claim 2
Dependent Claim
115 words
A SEALING CHANNEL COMPRISING A PAIR OF VERTICALLY DISPOSED PULLEYS, A HEATED PLATE AND A REFRIGERATED PLATE DISPOSED BETWEEN SAID PULLEYS, SAID PLATES BEING IN SIDEBY-SIDE RELATION AND EACH HAVING A VERTICAL SURFACE DISPOSED IN A COMMON PLANE, A POLYTETRAFLUOROETHYLENE IMPREGNATED GLASS FIBER BELT TRAINED AROUND SAID PULLEYS, SAID PULLEYS BEING DISPOSED SO THAT THE BELT LIES AGAINST SAID VERTICAL SURFACES, SAID BELT BEING ADVANCEABLE ACROSS SAID SURFACES, SAID PLATES HAVING ALIGNED HORIZONTAL GROOVES IN SAID VERTICAL SURFACES AND SAID BELT HAVING GUIDE MEANS PROJECTING THEREFROM AND ENTERING SAID GROOVES TO MAINTAIN THE BEST IN A GIVEN PATH OF TRAVEL RELATIVE TO SAID PLATES REGARDLESS OF TEMPERATURE GRADIENTS EXISTING LONGITUDINALLY AND LATERALLY OF SAID BELT.
References Cited (Backward Citations)
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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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |