Metal fusion bonding – Process – With supplementary mechanical joining
Reexamination Certificate
2007-09-06
2010-10-26
Ward, Jessica L (Department: 1793)
Metal fusion bonding
Process
With supplementary mechanical joining
C428S670000, C065S374120
Reexamination Certificate
active
07819303
ABSTRACT:
The present invention provides a new method for airtightly joining a hollow tube made of a reinforced platinum and a flange made of platinum or a platinum alloy, which prevents decreasing of mechanical strength of the hollow tube made of a reinforced platinum due to its joining with a flange.A method for airtightly joining a hollow tube made of a reinforced platinum with a flange made of platinum or a platinum alloy, which is a method for airtightly joining the outer periphery of a hollow tube made of a reinforced platinum produced by dispersing metal oxides in platinum or a platinum alloy, with a flange made of platinum or a platinum alloy, the method comprising a step of shrink-fitting a ring made of platinum or a platinum alloy to the outer periphery of the hollow tube, a step of heating the hollow tube to which the ring is shrink-fit at from 1,150 to 1,450° C. for from 1 to 10 hours, and a step of welding the flange made of platinum or a platinum alloy to the outer periphery of the ring.
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Machine Translation of JP 2000-302457, published Oct. 31, 2000.
European search report dated Jul. 29, 2010 in Application No. 06713218, 5 pages.
Hamashima Kazuo
Sasaki Michito
Asahi Glass Company Limited
D'Aniello Nicholas P
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ward Jessica L
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