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:
Nov. 22, 1977
Filed:
Jan. 09, 1974
Applicant:
Inventor:
John K Thorne, Decatur, AL (US);
Assignee:
Universal Oil Products Company, Des Plaines, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28F / ; F28F / ; F28F / ; F28F / ;
U.S. Cl.
CPC ...
165133 ; 165179 ;
Abstract
Heat transfer tubing adapted to be submerged in a liquid to be boiled as a result of transfer of heat from the interior of the tube to the liquid. The exterior of the tubing has elongated circumferentially extending confined spaces of substantially uniform cross-section and provided with effectively continuous circumferentially extending elongated restricted openings provided at circumferentially spaced zones with substantial enlargements.