The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 01, 1994
Filed:
Jul. 08, 1993
Alois Koeppl, Moordeich, DE;
Robert Mueller, Moordeich, DE;
ERNO Raumfahrttechnik GmbH, Bremen, DE;
Abstract
A heat pipe has at least one liquid flow channel and one vapor flow channel for the movement of the heat carrier fluid from the evaporator end to the condenser end and vice versa. The liquid flow channel is so constructed that the capillary radius of its cross-sectional area increases from the evaporator end to the condenser end of the heat pipe, preferably in a continuous manner. Further, the evaporator end of the pipe is provided with a closure member for communicating the liquid flow channel with the vapor flow channel for replenishing the liquid in the evaporating end if necessary. Opening of the closure member also permits gas and/or vapor bubbles that have been collected in the liquid flow channel to pass into the vapor channel. The closure member may be operated by an electromagnetic valve.