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. 01, 1988
Filed:
Mar. 30, 1987
Applicant:
Inventor:
Donald C Duncan, Pomona, CA (US);
Assignee:
Dunham-Bush, Riverside, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
F15D / ; F28F / ;
U.S. Cl.
CPC ...
138 38 ; 1651091 ; 165174 ;
Abstract
A turbulator for insertion in a heat exchange pipe in the form of a flattened hollow cylindrical metal tube with adjacent flats offset by 90.degree. and separated by integral tubular transition portions of generally triangular plane configuration. An elongated tab is partially struck out of each flat forming a fluid passage hole leading from one side of the turbulator to the other side.