Method of making a heat pipe with improved end cap
Patent 5029389 Issued on July 9, 1991. Estimated Expiration Date: 
July 9, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 9, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3680189 3769674 Heat pipes, process and apparatus for manufacturing same Heat pipes and thermal siphons Patent #: 4353415 InventorApplicationNo. 132850 filed on 12/14/1987US Classes:29/890.032, Heat pipe device making29/422, Shaping container end to encapsulate material165/104.21, Utilizing change of state165/104.26Utilizing capillary attractionExaminersPrimary: Cuda, IreneAttorney, Agent or FirmForeign Patent References
International ClassB23P 015/26AbstractA method of purging and sealing a heat pipe includes brazing an end cap to the end of a heat pipe. The end cap has a hole therethrough, through which the heat pipe is charged. After charging, the heat pipe can be sealed simply by pinching the end cap to cold weld the hole shut, and at the same time any excess portion of the end cap can be severed off. Using this process the end cap takes up less of the condensor zone, providing for more efficient heat exchange. Additionally, the seal is more reliable. | |
