Self-balancing positive displacement casting system
US4019670A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1974 |
| Grant date | Apr 26, 1977 |
| Priority date | — |
| Expiry date | Jan 21, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Improved methods and apparatus for positive displacement casting and/or for positive displacement bonding and, more particularly, for automatically forming, on a continuous, reproducible basis, fusion bonds devoid of structural, electrical and cosmetic defects between two or more workpieces by moving a heated electrode into the area to be bonded so as to uniformly heat and melt the portions of the workpieces to be bonded while, at the same time, displacing substantially all of the molten material from the area to be bonded into a storage area or reservoir surrounding the heated electrode where such molten material is maintained in its uniformly heated molten state, and then retracting the electrode so as to permit the molten material to return to the cavity formed by the electrode in the workpieces where such molten material is allowed to cool and solidify, thus forming a flawless bond between the workpieces--thermal or fusion bonds are made in accordance with the methods of the invention and with the apparatus of the invention by a combination of 1) elevated temperature levels sufficient to melt the material to be bonded, and 2) displacement of the molten material; as contrasted w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.