Method for manufacturing a heat pipe having an enlarged portion

Details Method for manufacturing a heat pipe having an enlarged portion Method for manufacturing a heat pipe having an enlarged portion

2007-10-02

2007-10-02

Banks, Derris H. (Department: 3725)

Metal deforming

Process

Tube making or reshaping

C072S370100, C072S370240, C029S890032

Reexamination Certificate

active

11404791

ABSTRACT:
A method for manufacturing a heat pipe having an enlarged portion includes the steps of: preparing a hollow tubular material having a uniform outer diameter; forming the tubular material with an enlarged portion having a different or larger outer diameter by narrowing or enlarging the tubular material; arranging a capillary structure into the tubular material; filling a working fluid into the tubular material after sealing one end of the tubular material; sealing the end to form a heat pipe after performing a degassing operation; and pressing the enlarged portion obtained in the previous step to form a flattened enlarged portion on the heat pipe.

REFERENCES:
patent: 3680189 (1972-08-01), Noren
patent: 2005/0235494 (2005-10-01), Chuang et al.
patent: 01181935 (1989-07-01), None

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