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:
Mar. 31, 1987
Filed:
Aug. 27, 1985
Heikichi Kuwahara, Ibaraki, JP;
Kenji Takahashi, Abiko, JP;
Takehiko Yanagida, Tsuchiura, JP;
Wataru Nakayama, Kashiwa, JP;
Shigeo Sugimoto, Ibaraki, JP;
Yoshihiko Nakayama, Ibaraki, JP;
Hiromichi Yoshida, Hitachi, JP;
Kiyoshi Oizumi, Tsuchiura, JP;
Toshi Sasaki, Hitachiota, JP;
Shigeho Fukuda, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Abstract
A method of producing a heat transfer wall, including a plurality of minute tunnels parallelly extending and spaced a minuscule distance from each other under an outer surface of the wall in contact with liquid, and a plurality of tiny hole portions formed at the outer surface of the wall above the tunnels and located at regular intervals along the tunnels to maintain same in communication with the outside. Each hole portion includes a projection located in the hole portion including a hole itself and extending from the vicinity of the hole portion into the hole portion in a manner to traverse same, so that a flow of liquid into the tunnels and a flow of vapor out of the tunnels can be optimally regulated by the projections to enable the heat transfer wall to exhibit a high heat transfer performance.