Apparatus for liquefying a thermoplastic plastic
Abstract
Abstract An apparatus for liquefying a thermoplastic plastic, in particular an adhesive on the basis of polyurethane, comprises a heatable sealed supply container having an upper portion for receiving a downwardly open transport container for the thermoplastic plastic and a lower portion serving as buffer volume, a heating means for heating the thermoplastic plastic disposed in the transport container, a base portion arranged beneath the supply container and thus beneath the transport container and accommodating a collecting trough for the liquefied thermoplastic plastic and a cover at the upper end of the supply container. In addition, a heating device, either a heat radiator or a contact heating means, is integrated into the cover to heat the bottom of the transport container and thus increase the discharge rate. Expediently, a resiliently mounted heating plate which comes to bear on the bottom of the transport container is provided in the cover.
Inventors
- 👤 Henning J. Claassen
Bibliographic Details
Claims Analysis
Total Claims: 7References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-13 | 1992-09-12 | 1993-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-13 | 1996-09-12 | 1997-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-13 | 2000-09-12 | 2001-03-14 | $7700.00 | Window Closed / Lapsed |