Abstract: A method and apparatus that applies corrections to the mass flow rate of combustion air into a gas or oil-fired, forced-draft burner, and thus provides for correcting the air-fuel ratio, by directly measuring the combustion air temperature and/or the barometric pressure of the combustion air, and using these measurements to develop a fan speed drive signal that corrects the volume of air inlet to the burner system without the use of the complex and expensive fully metered control systems, or elaborate feedback systems, or systems that require real-time combustion analysis, and the like.

Abstract: A method and apparatus that applies corrections to the mass flow rate of combustion air into a gas or oil-fired, forced-draft burner, and thus provides for correcting the air-fuel ratio, by directly measuring the combustion air temperature and/or the barometric pressure of the combustion air, and using these measurements to develop a fan speed drive signal that corrects the volume of air inlet to the burner system without the use of the complex and expensive fully metered control systems, or elaborate feedback systems, or systems that require real-time combustion analysis, and the like.

Abstract: A cart having a plurality of spaced upper skid members supported by a lower bracing member to which two wheels are rotatably attached, side bracing members connected between the lower bracing member and the plurality of spaced upper skid members, and upper bracing members connected between side bracing members is described. Two detachable handles, a shelf, and a box for use with such a cart are also described, as is a method of using such a cart to enable one person to move a small water craft along a support surface.