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:
Jun. 13, 1989
Filed:
Jul. 07, 1988
Applicant:
Inventor:
Richard H Kirby, Arlington, VT (US);
Assignee:
Burnham Corporation, Lancaster, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F22B / ;
U.S. Cl.
CPC ...
122149 ; 122 75 ; 1221 / ;
Abstract
A boiler having a first pass furnace and a set of second pass tubes, a reversing recess proximate to the furnace and tubes for reversing the flow of gases between the furnace and tubes, and a rear access door providing access to the recess, in which there is an integral, self-sustaining reversing chamber sized and configured to fit within and be removably held within recess. The chamber is enclosed by walls on all sides thereof except the side facing the recess which is open and concave. The chamber is formed of loosely-packed ceramic fibers with air entrapped between said fibers to provide greater insulation.