Deformable end cap for heat pipe

Heat exchange – Intermediate fluent heat exchange material receiving and... – Liquid fluent heat exchange material

Reexamination Certificate

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Details

C165S046000, C165S081000, C165S104210, C220S213000

Reexamination Certificate

active

06907918

ABSTRACT:
A heat pipe is provided having a vessel with a closed first end, a second end, and a wick on an inner surface that defines a passageway. A convex wall is positioned at the second end so as to block the passageway. The convex wall is deformable so as to move from a first position wherein a portion of the wall is convex to a second position wherein the portion of the wall is concave. The convex wall may include at least one stress concentrator so that upon an application of a force to the convex wall, the stress concentrator causes the convex wall to buckle. A method for forming a heat pipe is also provided comprising coating the interior surface of the vessel with a wicking material and partially saturating the wick with a working fluid. The vessel is then partially evacuated. A portion of the vessel is pinched-off so as to seal the vessel. Then, the pinched-off portion of the vessel is pressed so as to move it from a first position wherein the portion is convex to a second position wherein the portion is concave.

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