Heat activated closure

Details Heat activated closure Heat activated closure

1994-04-26

1995-08-29

Ramsey, Kenneth J.

Metal fusion bonding

Process

With protecting of work or filler or applying flux

228124l6, 445 43, B23K 1008, H01J 722

Patent

active

054453127

ABSTRACT:
A desired environment is entrapped inside a hollow workpiece by placing a meltable filler adjacent a plurality of capillaries in the wall of the workpiece. The workpiece is then placed in the desired controlled environment (e.g. a vacuum). The workpiece is then heated to melt the filler material which then through capillary action flows into and closes all of the capillaries thereby entrapping the controlled environment within the workpiece.

REFERENCES:
patent: 2934392 (1960-04-01), De Santis et al.
patent: 3924792 (1975-12-01), Vrijssen

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