Electric heating assemblies

Claim 2

An electric heating assembly, comprising a frame formed of a plurality of strips which are connected in laterally spaced relation, conductor terminals carried by one strip and adapted to be connected to a power supply source, an open coil heating element formed in simuous fashion to provide a plurality of reaches held in position extending crosswise of said strips, the end of the reach at one end of said heating element being electrically connected to one terminal, a thermostatic switch disposed between a pair of strips and carried thereby, said switch having contacts movable to various positions to control passage of electrical current, one side of said switch being electrically connected in series relation with the other of said conductor terminals and the other end of said heating element, said thermostatic switch having a bimetallic disc operably connected with said switch contacts, the major surface of said disc facing and being disposed in close proximity to an adjoining reach of said heating element so as to be quickly affected by changes of heat generated by said element, and said disc being adapted to move said switch contacts to a position wherein current supply to said heating element is interrupted when the heat generated by the latter reaches a predetermined temperature.

Claim 3

An electric heating assembly, comprising: a frame an electric heating element supported by said frame and formed to provide a pair of heater lengths in spaced, side-by-side relation, one length being adapted for electrical connection with one side of a power source, the other length being shorter than said one length, a thermostatic switch having contacts movable to various positions to control passage of electrical current, one terminal of said switch being electrically connected to said shorter length and the other terminal of said switch being adapted to be electrically connected to the other side of said power source, said thermostatic switch having a heat sensor facing and in close proximity to a portion of said one length of said heating element so as to be quickly affected by the changes of heat generated by said element, said sensor being operably connected to said switch contacts to move the latter to a position wherein current supply to said heating element is interrupted when heat generated by the latter reaches a predetermined temperature.

Claim 4

An electric heating assembly, comprising: a frame an electric heating element supported by said frame and formed to provide a pair of heater lengths in spaced, side-by-side relation, one length being adapted for electrical connection with one side of a power source, the other length being shorter than said one length, a thermostatic switch having contacts movable to various positions to control passage of electrical current, one terminal of said switch being electrically connected to said shorter length and the other terminal of said switch being adapted to be electrically connected to the other side of said power source, said thermostatic switch having a heat sensor facing and in close proximity to a portion of said one length of said heating element so as to be quickly affected by the changes of heat generated by said element, said sensor being operably connected to said switch contacts to move the latter to a position wherein current supply to said heating element is interrupted when heat generated by the latter reaches a predetermined temperature.

Claim 5

The construction according to claim 2 wherein said heating element is an open coil formed to provide a plurality of heater lengths in spaced, side-by-side relation, said shorter length constituting one end of said heating element and said one length being disposed immediately adjacent said shorter length.

Claim 6

The construction according to claim 2 wherein said heat sensor is a bimetallic disc with its major surface facing and in close proximity to said one length.

Claim 7

An electric heating assembly, comprising: a frame formed of a plurality of strips which are connected in laterally spaced relation, an open coil heating element formed in sinuous fashion to provide a plurality of reaches extending crosswise of said strips and held in spaced, side-by-side relation, the end of the reach at one end of said heating element being adapted to be electrically connected to one side of a power source, the reach at the other end of said heating element being shorter than the adjoining reach, a thermostatic switCh disposed between a pair of strips and carried thereby to occupy a space in juxtaposition with a portion of said adjoining reach, said switch having contacts movable to various positions to control passage of electrical current through said switch, one terminal of said switch being electrically connected to the end of said shorter reach and the other terminal of said switch being adapted to be electrically connected to the other side of said power source, said thermostatic switch having a heat sensor facing and in close proximity to said adjoining reach portion so as to be quickly affected by changes of heat in said portion, said sensor being adapted to move said switch contacts to a position wherein current supply to said heating element is interrupted when the heat from said adjoining reach portion reaches a predetermined temperature.

Claim 8

An electric heating assembly, comprising: a frame formed of a plurality of strips which are connected in laterally spaced relation, an open coil heating element formed in sinuous fashion to provide a plurality of reaches extending crosswise of said strips and held in spaced, side-by-side relation, the end of the reach at one end of said heating element being adapted to be electrically connected to one side of a power source, the reach at the other end of said heating element being shorter than the adjoining reach, a thermostatic switCh disposed between a pair of strips and carried thereby to occupy a space in juxtaposition with a portion of said adjoining reach, said switch having contacts movable to various positions to control passage of electrical current through said switch, one terminal of said switch being electrically connected to the end of said shorter reach and the other terminal of said switch being adapted to be electrically connected to the other side of said power source, said thermostatic switch having a heat sensor facing and in close proximity to said adjoining reach portion so as to be quickly affected by changes of heat in said portion, said sensor being adapted to move said switch contacts to a position wherein current supply to said heating element is interrupted when the heat from said adjoining reach portion reaches a predetermined temperature.

Claim 9

The construction according to claim 5, wherein said heat sensor is a bimetallic disc with its major surface directed toward said adjoining reach portion.