Casting apparatus with slidably mounted branch runners
Abstract
Abstract Apparatus for simultaneously casting a plurality of aluminum ingots comprises a vertically swinging metal frame of substantially zero coefficient of thermal expansion, supported above an elongated series of molds. A main runner for molten aluminum extends lengthwise of the frame and the series of molds. A container supplies molten aluminum to the main runner. To solve the problems of thermal expansion of the main runner, branch runners, one individual to each mold, are supported not by the main runner but rather by the frame and are movable relative to the main runner. Downward vertical swinging movement of the assembly feeds molten aluminum to the runners, while upward swinging movement of the assembly returns excess aluminum to the container. As a result, ingots of uniform size, good surface quality and uniform crystalline properties are achieved.
Inventors
- 👤 P Palovits
- 👤 T Laar
- 👤 E Mucsy
- 👤 J Harmath
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |