Metal deforming – By relatively receding work-engaging tool-faces – Embodying three or more tools
Patent
1985-10-23
1988-10-11
Terapane, John F.
Metal deforming
By relatively receding work-engaging tool-faces
Embodying three or more tools
376449, 292835, 29523, 29723, B21D 4102
Patent
active
047761989
ABSTRACT:
An insert for providing a reduced inside diameter for a structural tube, specifically an instrumentation guide tube, of a nuclear fuel assembly. The insert has forming lobes which coact with the structural tube to plastically deform the structural tube and mechanically lock it with respect to grid straps of a grid assembly. The insert also has centering lobes to prevent it from being expanded in other than a coaxial alignment with the structural tube. An expansion tool is provided for sequentially registering with and expanding sequential forming lobes in a simplified manner whereby all of the operations necessary to assemble the structural tube in the fuel assembly can be easily and accurately performed.
REFERENCES:
patent: 3024051 (1962-03-01), Hullinger
patent: 3358492 (1967-12-01), Richter
patent: 3831413 (1974-08-01), Glatthorn
patent: 4182152 (1980-01-01), Vaill et al.
patent: 4229259 (1980-10-01), Vaill et al.
patent: 4242893 (1981-01-01), Diller
Maples John S.
Terapane John F.
Westinghouse Electric Corp.
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