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:
Aug. 21, 1990
Filed:
Mar. 20, 1989
Applicant:
Inventor:
Jan S Porowski, Pittsburgh, PA (US);
Assignee:
SMC O'Donnell Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28D / ; F28F / ;
U.S. Cl.
CPC ...
165 111 ; 165 81 ; 1651341 ; 165180 ; 266172 ; 75595 ;
Abstract
A cooling apparatus that comprises a first elongated metal tube, a second elongated metal tube longitudinally disposed within the first elongated metal tube having a substantial portion of its outer surfaces out of contact with the inner surface of the first elongated metal tube, with the inner metal tube being adapted to provide passage through it of a hot fluid, and means for cooling the outer surface of the first elongated metal tube, whereby at ambient temperatures the tubes can be easily separated for inspection and at operating temperatures the tubes are substantially in contact with each other.