Removable fireplace heater

Claim 2

A portable air heater for heating air with heat generated in a fireplace comprising: a hollow body having a first section and a pair of second sections rigidly and airtightly secured to respective ends of the first section, each section having a fluid passage therethrough, the second sections being in fluid communication with ends of the first section and extending laterally therefrom, the sections being constructed of a heat conductive material and defining outer surfaces for placement adjacent walls of the fireplace and inner surfaces for partially surrounding a fire in the fireplace, the height of the fluid passages of the sections being sufficient to extend throughout at least a major portion of the height of the fireplace, a hollow extension for each second section, respectively, the extensions being rigidly and airtightly secured to and extending laterally from respective second sections and projecting in opposite directions with respect to each other, each extension having a fluid passage and outer end provided with an opening, the height of the fluid passage of each extension and its opening being substantially equal to the height of the fluid passage of the adjacent section, the extensions, second sections and the first section defining an unobstructed, horizontal fluid passage extending from the outer end of one extension to the outer end of the other extension, elongated fan means disposed in one extension adjacent to and extending longitudinally of the opening thereof for inducing a flow of air through said one extension and the interior of the body to the opening in the other extension so that air in said flow is heated and the heated air is directed into the space adjacent to the fireplace.

Claim 3

A portable hot air heater for heating air with heat generated in a fireplace comprising: a hollow body having a first section and a pair of second sections rigidly and airtightly secured to respective ends of the first section, the second sections being in fluid communication with ends of the first section and extending laterally therefrom, the sections being constructed of a heat conductive material and defining outer surfaces for placement adjacent walls of the fireplace and inner surfaces for partially surrounding a fire in the fireplace, the inner surfaces being at least in part corrugated to increase the surface area thereof, a hollow extension for each second section, the extension being rigidly and airtightly secured to and extending laterally from respective second sections and projecting in opposite direction with respect to each other, the extension extending over the full height of the second sections, the outer end of each extension being open over its full height, the extensions, second sections and the first section defining an unobstructed, horizontal fluid passage extending from the open end of one extension to the open end of the other extension, the height to the fluid passages and the open ends of the extensions being sufficient to extend throughout at least a major portion to the height of the fireplace, elongated fan means disposed in one extension adjacent the end of such extension for inducing a substantially even airflow in the form of a curtain of air distributed over substantially the full height of the extensions and the interior of the body from the opening adjacent the fan through the extension, the sections, and to the opening in the other extension for discharge of air heated during the circulation through the interior of the body at a point remote from the air intake opening to thereby heat the air in a room surrounding the fireplace, and further including decorative means vertically adjustably secured to the extensions adjacent the respective ends of the second sections for defining a visible outer fireplace edge which has a vertically adjustable dimension for adapting the heater for use with fireplaces of differing heights.

Claim 4

A portable hot air heater for heating air with heat generated in a fireplace comprising: a hollow body having a first section and a pair of second sections rigidly and airtightly secured to respective ends of the first section, the second sections being in fluid communication with ends of the first section and extending laterally therefrom, the sections being constructed of a heat conductive material and defining outer surfaces for placement adjacent walls of the fireplace and inner surfaces for partially surrounding a fire in the fireplace, the inner surfaces being at least in part corrugated to increase the surface area thereof, a hollow extension for each second section, the extension being rigidly and airtightly secured to and extending laterally from respective second sections and projecting in opposite direction with respect to each other, the extension extending over the full height of the second sections, the outer end of each extension being open over its full height, the extensions, second sections and the first section defining an unobstructed, horizontal fluid passage extending from the open end of one extension to the open end of the other extension, the height to the fluid passages and the open ends of the extensions being sufficient to extend throughout at least a major portion to the height of the fireplace, elongated fan means disposed in one extension adjacent the end of such extension for inducing a substantially even airflow in the form of a curtain of air distributed over substantially the full height of the extensions and the interior of the body from the opening adjacent the fan through the extension, the sections, and to the opening in the other extension for discharge of air heated during the circulation through the interior of the body at a point remote from the air intake opening to thereby heat the air in a room surrounding the fireplace, and further including decorative means vertically adjustably secured to the extensions adjacent the respective ends of the second sections for defining a visible outer fireplace edge which has a vertically adjustable dimension for adapting the heater for use with fireplaces of differing heights.