Apparatus for producing hot and cold insulating sheet
Abstract
Abstract APPARATUS FOR PRODUCING HOT AND COLD INSULATING SHEET CONSISTING, AT LEAST IN PART, OF FOAMED PLASTIC. AT LEAST ONE BASIC CONSTITUENTS OF A PLASTIC ARE MIXED WITH AT LEAST ONE ACTIVATING AGENT AND DIRECTED INTO A GAP FORMED BY AT LEAST TWO SPACED APART SURFACES. THE MIXTURE FORMS A SHEET OF FOAMED PLASTIC, THE THICKNESS OF WHICH IS DETERMINED BY THE SIZE OF THE GAP. THE GAP SURFACES MAY BE FORMED OF SHEETS OF FLEXIBLE FOIL MOVED OVER GUIDES OR ROLLERS AND MAY BE MADE OF MATERIAL TO WHICH THE FOAMED PLASTIC WILL ADHERE. THE RESULTING INSULATING SHEET MAY THUS HAVE ONE OR MORE LAYERS OF THIS FOIL AS A PROTECTIVE COATING OVER THE FOAMED PLASTIC. THE INSULATING SHEET PRODUCED ACCORDING TO THE PRESENT INVENTION CAN BE MADE THIN AND FLEXIBLE IF DESIRED, AND MAY BE USED IN THE MANUFACTURE OF PRODUCTS, SUCH AS CONTAINERS OF ALL KINDS, WHICH FIND NEED FOR ITS HOT AND COLD INSULATING AS WELL AS SHOCK ENERGY ABSORBING QUALITIES.
Inventors
- 👤 Willy Eyberg
- 👤 Josef Fulber
- 👤 Helmut Habig
Bibliographic Details
Claims Analysis
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |