Patent ID: 7845394

Claim:
A heat pipe comprising: an elongated casing having an evaporating section and a condensing section; a wick disposed on an inner wall of the evaporating section of the casing; at least one artery mesh disposed in the casing, the at least one artery mesh having a large portion and a small portion with an outer diameter smaller than that of the large portion, the small portion located within the evaporating section of the casing and being in direct physical contact with an inner surface of the wick, the large portion being in direct physical contact with an inner wall of the condensing section of the casing; and working medium filled in the casing and saturating the wick and the at least one artery mesh; wherein a bottom of the wick extends to the condensing section of the heat pipe, an axis of the large portion of the at least one artery mesh being offset from that of the small portion, a top of the large portion being in direct physical contact with the inner wall of the condensing section, and a bottom of the large portion being in direct physical contact with the wick.