Flue pipe heat exchanger

Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a perspective view of a flue pipe heat exchanger, showing my new design;

FIG. 2 is a front elevational view, the rear elevational view being substantially identical thereto;

FIG. 3 is a top plan view, thereof;

FIG. 4 is an elevational view of one side, the opposite side view being substantially identical thereto;

FIG. 5 is a bottom plan view; and,

FIG. 6 is a perspective view as FIG. 1, but taken to a reduced scale, the broken line representation of the flue damper handle and the stove being included solely for illustrative purposes, forming no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D264499 May 18, 1982 Lundy
D271238 November 1, 1983 Valencia
D300076 February 28, 1989 Evans
D346020 April 12, 1994 Kellogg et al.
D358204 May 9, 1995 Ferrier
5357686 October 25, 1994 Jensen
Patent History
Patent number: D414257
Type: Grant
Filed: Jul 2, 1998
Date of Patent: Sep 21, 1999
Inventor: Rosalio Estrada (Stockton, CA)
Primary Examiner: Mitchell Siegel
Law Firm: Lothrop & West
Application Number: 0/90,197
Classifications
Current U.S. Class: Vent, Ductwork, Or Element Thereof (D23/393); Game Piece (D21/386)
International Classification: 2399;