Keith Greg Hansen
Land Surveyors in Perry, UT
License number
Utah 167819-2201
Issued Date
Apr 21, 1986
Expiration Date
Mar 31, 2017
Category
Engineer/Land Surveyor
Type
Professional Land Surveyor
Address
Address
Perry, UT
Professional information
Heat Saving Device For Space Heating Furnace
US Patent:
4155699, May 22, 1979
Filed:
Jun 20, 1977
Appl. No.:
5/807904
Inventors:
Keith A. Hansen - Brigham City UT
International Classification:
F23N 300
US Classification:
431 20
Abstract:
An improvement in space heating furnaces fueled by gas or liquid for saving heat ordinarily lost through the draft system of such a furnace, comprises a means of automatically closing the air inlet to the combustion chamber as well as the air inlet to the diverter air opening at the flue immediately after cessation of the main burner flame, and also for opening both of the air inlets immediately prior to the ignition of the main burners.