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. 23, 2021
Filed:
Nov. 07, 2017
Applicant:
Marelli Cabin Comfort Japan Corporation, Saitama, JP;
Inventor:
Hiroyuki Oono, Saitama, JP;
Assignee:
Marelli Cabin Comfort Japan Corporation, Saitama, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28F 1/14 (2006.01); F28F 1/40 (2006.01); F28F 21/08 (2006.01); B21D 7/12 (2006.01); F28D 9/00 (2006.01); F28F 13/12 (2006.01);
U.S. Cl.
CPC ...
F28F 1/40 (2013.01); F28F 21/08 (2013.01); B21D 7/12 (2013.01); F28D 9/0062 (2013.01); F28F 13/12 (2013.01); F28F 2215/10 (2013.01);
Abstract
A fin-assembled tube includes a helical fin arranged in an interior of a tube, wherein the tube has: a straight tube portion the center line of which extends in a substantially straight line; and a bent portion the center line of which is curved, and the helical fin is formed such that a helical pitch in an axial direction is longer in a portion positioned in the bent portion relative to the helical pitch in a portion positioned in the straight tube portion, the helical pitch being a pitch of a plate-shaped fin material twisted by a certain angle about the center line.