Heat exchanger for fuel fired furnaces

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Description

FIG. 1 is a front perspective view of the heat exchanger for fuel fired furnaces;

FIG. 2 is a right side elevational view thereof, which is a mirror image of its left side elevational view;

FIG. 3 is a rear end elevational view thereof;

FIG. 4 is a front end elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
2353606 July 1944 Watts
2525400 October 1950 Crawford
2527937 October 1950 Klug
2589555 March 1952 King et al.
3358672 December 1967 Dirk et al.
4308990 January 5, 1982 Borovina et al.
4478206 October 23, 1984 Ahn
4682579 July 28, 1987 Bigham
4738307 April 19, 1988 Bentley et al.
4807588 February 28, 1989 Bentley et al.
4926840 May 22, 1990 Shellenberger et al.
Patent History
Patent number: D335337
Type: Grant
Filed: May 18, 1990
Date of Patent: May 4, 1993
Assignee: Rheem Manufacturing Company (New York, NY)
Inventor: Timothy J. Shellenberger (Fort Smith, AR)
Primary Examiner: James M. Gandy
Law Firm: Konneker & Bush
Application Number: 7/525,477
Classifications
Current U.S. Class: Radiator, E.g., Spaced Enclosed Heat Exchangers (D23/330)