Apparatus and method for producing composite materials
Abstract
Abstract An apparatus and method for producing composite materials and the materials made thereof are provided. In one form, one or more sheet metal materials are continuously extruded to shape and are combined with a core material in a rolling mill to provide a composite structure having improved characteristics imparted thereto by both core and encapsulating materials. The core material may comprise a plurality of reinforcing elements such as filaments, wires, whiskers or a grid fed to the bite of two extruded sheets or otherwise formed shapes which are made to flow over and around the reinforcing elements and to encapsulate same therebetween as the two sheets are roll bonded or welded together and reduced in thickness to form a third composite sheet formation thereof. In another form, individual articles are disposed on top of a first freshly extruded sheet and are encapsulated in a composite sheet formed of said first sheet and a second sheet disposed thereagainst and roll bonded thereto in a rolling mill. The oxide free, high-temperature condition of the two sheets, as extruded, is utilized to fabricate improved composite sheet materials without the difficulties normally experienced in fabricating sheet materials from cold stock.
Inventors
- 👤 Jerome H Lemelson
Bibliographic Details
Claims Analysis
Total Claims: 8References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |