Ice fishing heater

A device for preventing water in an ice hole from freezing, said device being adapted for support and disposition on ice above and in a surrounding relation to a hole and comprising an annular base forming a center opening, an annular housing connected to said base and forming in combination therewith an annular chamber, said housing being provided with inner grille work, an annular tubular heater provided with ports and substantially surrounding said opening and supported in said chamber in spaced relation to said base and housing, and means whereby the heater may be readily operatively connected to a supply of energy, and said means is constructed to distribute heat in opposite directions in said heater and through said ports for flow generally toward the center of the device via said grille work.

A device for preventing water in an ice hole from freezing, said device being adapted for support and disposition on ice and in a surrounding relation to a hole and comprising an annular base forming a center opening, an annular housing connected to said base and forming in combination therewith an annular chamber, an annular heater substantially surrounding said opening and supported in said chamber in spaced relation to said base and housing, an annular partition disposed in said chamber between and in spaced relation to said heater and base whereby to provide a lower chamber, said housing being provided with openings through which air may freely circulate in and out of said lower chamber whereby to assist in insulating said heater from said base, and means whereby the heater may be readily operatively connected to a supply of energy.

A device comprising an annular base, said base being adapted for disposition on ice above a hole therein and forming an unobstructed opening, an annular housing carried by said base and having an inner wall provided with grille work, an annular partition disposed in said housing and dividing the interior of the latter into an upper chamber and a lower chamber, said chambers being open to the atmosphere, annular tubular heater means forming an unobstructed opening, means for supporting said heater means in said upper chamber above said lower chamber and locating said unobstructed opening above said base opening, and said heater means being provided with at least one inner outlet port through which heat may be caused to emanate for circulation through said grille work and generally toward the center of the device when connected to means for supplying heat.

A device for preventing water in a hole in a layer of ice from freezing, said device comprising an annular base for disposition on ice above and about a hole and forming an opening, an annular tubular heater means forming an unobstructed opening, means for supporting said heater means above and in spaced relation to said base for locating said unobstructed opening above said base opening, and said heater means being provided with at least one inner outlet port through which heat may be caused to emanate generally toward the center of the device when connected to means for supplying heat.

A device for preventing water in an ice hole from freezing, said device comprising a hollow annular structure adapted for support on ice above and in a surrounding relation to a hole therein and having a base forming an opening, an annular tubular heater means forming an unobstructed opening, means for supporting said annular heater means within the confines of said structure to substantially locate its unobstructed opening above said base opening, said structure having an inner wall provided with inner openings open to the atmosphere, and said heater means being provided with inner outlet ports through which heat from the heater means when connected to a source of energy may be caused to flow and radiate through said inner openings generally toward the center of the device.

A device for preventing water in an ice hole from freezing, said device being adapted for support on ice above and in a surrounding relation to a hole and comprising an annular base for disposition on ice and forming an opening, an annular heater supported above said base in a surrounding relation to said opening and provided with means whereby heat may be caused to flow through the heater and around said opening, means interposed between said heater and base whereby to substantially prevent heating of the latter, and a plurality of locating means of which each comprises an upper leg adjustably secured to said base and a depending leg for disposition in a hole for stabilizing and holding the device in correct relation to a hole.

A substantially annular device for disposition upon a layer of ice above and in a surrounding relation to a hole therein, said device comprising an annular base provided with means for adjusting the device in relation to such a hole and forming an opening, a pair of annular walls having lower edges secured to said base for locating said walls in an upstanding concentric spaced relation, an annular cover disposed over and secured to said walls to provide an annular substantially hollow housing, an annular heater supported in said housing in a surrounding relation to said opening and in concentrically spaced relation to said walls, and said housing being provided with a plurality of circumferentially spaced openings through which heat from the heater may flow toward the center of the device.