US 11,719,494 B2
Arrowhead fin for heat exchange tubing
Thomas W. Bugler, Frederick, MD (US); Jean-Pierre Libert, Frederick, MD (US); Mark Huber, Sykesville, MD (US); and Aaron Reilly, Taneytown, MD (US)
Assigned to Evapco Inc., Taneytown, MD (US)
Filed by Evapco, Inc., Taneytown, MD (US)
Filed on Nov. 2, 2020, as Appl. No. 17/86,827.
Application 17/086,827 is a continuation of application No. 15/425,454, filed on Feb. 6, 2017, granted, now 10,823,513.
Claims priority of provisional application 62/291,196, filed on Feb. 4, 2016.
Prior Publication US 2021/0116187 A1, Apr. 22, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. F28F 1/16 (2006.01); F28F 13/12 (2006.01); F28F 1/40 (2006.01); F28F 1/12 (2006.01); F28B 1/06 (2006.01); F28F 1/04 (2006.01); F28F 1/26 (2006.01); F28F 3/02 (2006.01); F28F 1/02 (2006.01)
CPC F28F 1/16 (2013.01) [F28B 1/06 (2013.01); F28F 1/04 (2013.01); F28F 1/126 (2013.01); F28F 1/26 (2013.01); F28F 1/40 (2013.01); F28F 13/12 (2013.01); F28F 1/02 (2013.01); F28F 3/025 (2013.01); F28F 2215/10 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A fin for a heat exchange tube comprising a plurality of fin segments each fin segment comprising arrowhead shapes arranged along a length of said fin segment, said length parallel to an air flow direction along said fin segment; wherein said arrowhead shapes are arranged into arrowhead pairs, each arrowhead pair comprising an indented arrowhead shape and a raised arrowhead shape, where a pointed end of one arrowhead shape of a pair shares a point on the fin segment with a forked end of a second arrowhead shape of the pair, and wherein said pairs of arrowhead shapes are spaced apart along said length, the pointed end of each arrowhead pair separated from the forked end of an adjacent arrowhead pair by a portion of said fin segment that is flat.