Patent · US Expired

Heat pipe of aluminum, steel or gray cast iron

US4773476A · kind A · utility

7Cited by

0References

25Claims

0Family size

Assignee

Daimler-Benz AG · DE

Inventors

Friedrich Baehrle · Waiblingen, DE
Helmut Wulf · Esslingen am Neckar, DE
Helmut Kreeb · Meersburg, DE

Key dates

Filing date	Nov 24, 1986
Grant date	Sep 27, 1988
Priority date	—
Expiry date	Nov 24, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49353
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

A heat pipe of aluminum is provided on the inside on all sides thereof with a completely closed fluid-tight coating of a water-resistant nickel in order to make the same resistant against water as heat carrier medium or to make the same vacuum-tight for long periods of time. Also, a coating of hard solder material is possible. The coating thickness is no less than 10 .mu.m and no more than 15 .mu.m. Individual parts of the heat pipe, prior to the soldering, are coated with the nickel material, each by itself, completely up to the joint areas. A process of making the heat pipe is also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.