Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shinichi Yatsuzuka0
Shuzo Oda0
Katsuya Komaki0
Date of Patent
February 24, 2009
0Patent Application Number
117177950
Date Filed
March 13, 2007
0Patent Primary Examiner
Patent abstract
In a steam engine 1, an inner wall face 22a of a connecting tube portion 22 is entirely formed out of a water repellent finish face 22b. Accordingly, when liquid located in a portion close to a heater 30 in a vertical direction extending tube 12 is heated, boiled and liquefied, a liquid level of the liquid in the vertical direction extending tube 12 is pushed down from a top dead center Lu to a bottom dead center Lb. At this time, a quantity of liquid drops attached onto the inner wall face 22a of the connecting tube portion 22 can be reduced as compared with a case in which the entire inner wall face 22a of the connecting tube portion 22 is not formed out of a water repellent finish face 22b.
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