Heat exchanger

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Description

FIG. 1 is a front view of the heat exchanger of the claimed design.

FIG. 2 is a back view of the heat exchanger.

FIG. 3 is a left side view of the heat exchanger.

FIG. 4 is a right side view of the heat exchanger.

FIG. 5 is a top view of the heat exchanger.

FIG. 6 is a bottom view of the heat exchanger.

FIG. 7 is a front perspective view of the heat exchanger.

FIG. 8 is a back perspective view of the heat exchanger; and,

FIG. 9 is a cut-away perspective view of the heat exchanger.

The broken lines are included for the purpose of illustrating portions of the heat exchanger that form no part of the claimed design.

The product “heat exchanger” is positioned within a boiler or burner such that after heating, the heat storage can facilitate the transfer of heat to the boiler or burner in a delayed and uniform manner.

Claims

I claim the ornamental design for heat exchanger, as shown and described.

Referenced Cited
U.S. Patent Documents
3315739 April 1967 Kearney
7168481 January 30, 2007 Ishiyama et al.
7981168 July 19, 2011 Ishiyama et al.
D686710 July 23, 2013 Towiwat
D686711 July 23, 2013 Towiwat
D686712 July 23, 2013 Towiwat
20050056410 March 17, 2005 Ishiyama et al.
20070107888 May 17, 2007 Ishiyama et al.
20090025919 January 29, 2009 Ishiyama et al.
Patent History
Patent number: D696756
Type: Grant
Filed: May 3, 2013
Date of Patent: Dec 31, 2013
Inventor: Dhiti Towiwat (Bangkok)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Ania Aman
Application Number: 29/453,860
Classifications
Current U.S. Class: Heat Exchange Unit, E.g., Coil, Etc. (D23/323)