Casting pattern seam tool and method for its use
US6652794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2001 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Dec 13, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1798
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Embodiment of a disclosed seam tool comprise a rigid backing configured to be positioned about a seam region defined by at least two adjacent pattern segments. The rigid backing further includes an injection port and, typically, a gas outlet port, fluidly coupled to the seam region. The disclosed device may further include a resilient liner which contacts and forms a seal with surfaces of the pattern segments. Compensating grooves may be formed in the resilient material to allow complete filling of the seam region by weld-forming material. An injection fitting may be operably coupled to an injection port to provide an improved ability to receive weld-forming material to form welds. A method for forming a weld between plural, adjacently positioned pattern segments also is disclosed. The method comprises positioning the disclosed embodiments of the seam tool about a seam region defined between adjacent pattern segments. A weld-forming material is introduced into an injection port fluidly coupled to the seam region, and allowed to solidify to form a weld. In other embodiments, a seam tool may include an air bladder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.