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:
Sep. 30, 2014
Filed:
Dec. 22, 2009
Applicants:
Jim C. Smelcer, Hermitage, TN (US);
Brian J. Iske, Murfreesboro, TN (US);
Neil W. Rolph, Lebanon, TN (US);
Inventors:
Jim C. Smelcer, Hermitage, TN (US);
Brian J. Iske, Murfreesboro, TN (US);
Neil W. Rolph, Lebanon, TN (US);
Assignee:
Lochinvar, LLC, Lebanon, TN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F24H 1/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
A fire tube heater apparatus includes a shell, with a tube bundle received in the shell and a burner section communicated with the tube bundle. The tubes in the tube bundle have circular inlet and outlet end portions with a flattened, serpentine intermediate portion. The intermediate portion has a width greater than the inlet outside diameter and a tube thickness transverse to the width less than the inlet outside diameter.