Heat sealing device
Abstract
Abstract IN A MACHINE FOR BONDING SELECTED SURFACES OF A CONTAINER FORMED FROM PAPER, A DEVICE FOR SUPPLYING HEATED AIR AGAINST A SELECTED SURFACE TO BE BONDED COMPRISES NOZZLE MEANS FOR DIRECTING HEATED AIR AGAINST SUCH SURFACE, MEANS FOR SUPPLYING HEATED AIR TO THE NOZZLE MEANS, A CONDUIT CONNECTED AT ONE END TO THE NOZZLE MEANS AND HAVING A NORMALLY CLOSED VALVE SPACED FROM THAT END, A CONVEYOR FOR CARRYING THE CONTAINERS PAST SAID NOZZLE MEANS, AND MEANS RESPONSIVE TO STOPPING THE CONVEYOR FOR OPENING THE VALVE TO DIVERT HEATED AIR FROM SAID NOZ- ZLE MEANS THROUGH SAID CONDUIT INTO THE ATMOSPHERE THEREBY PREVENTING OVERHEATING OF CONTAINERS POSITIONED ON THE CONVEYOR ADJACENT THE NOZZLE MEANS.
Inventors
- 👤 Ralph O Vuilleumier
- 👤 Giulio B Bagnatori
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |