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:
Feb. 28, 1984
Filed:
May. 20, 1981
Harris W Smith, Chagrin Falls, OH (US);
Hunter Investment Company, Cleveland, OH (US);
Abstract
A heat exchanger includes elongated inner and outer tubular members defining an elongated generally annular passage therebetween. A burner mounted adjacent one end of the tubular members discharges hot gases into the inner tubular member for axial flow therealong and entry into the annular passage adjacent the ends of the tubular members remote from the burner. The gases then flow back through the annular passage for discharge through a lateral exhaust outlet in the outer tubular member adjacent the one end thereof. The annular passage has a varying cross-sectional shape along its length such that a major portion of the gases enter the annular passage at a location diagonally opposite from the exhaust outlet and then flow both longitudinally and circumferentially along the annular passage toward the exhaust outlet. The heat exchanger is particularly useful in heating diesel engine coolant to facilitate more rapid engine starting.