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:
Jun. 11, 2013
Filed:
Aug. 10, 2007
Michael J. O'donnell, Avon, OH (US);
Terrance C. Slaby, North Royalton, OH (US);
Michael J. O'Donnell, Avon, OH (US);
Terrance C. Slaby, North Royalton, OH (US);
Beckett Gas, Inc., North Ridgeville, OH (US);
Abstract
A heat exchanger tube having an integral restricting and turbulating structure consisting of dimples formed by confronting indentations pressed into the sides of the heat exchanger tube. The dimples are comprised of indentations disposed in pairs which extend into the tube to such a depth as is necessary to significantly reduce the cross sectional area of the heat exchanger tube. The dimples of a pair are staggered or offset, longitudinally with respect to each other such that a restrictive passage is defined between each pair of offset dimples. The turbulence characteristics of the tube can be controlled by varying the depth to which the dimples project into the tube and the longitudinal spacing between the dimples that comprise the pair. Adjacent pairs of dimples may be rotated 90° with respect to each other or alternately can be arranged in a helix pattern.