Carburetor deicer

Claim 2

A heater for fuel supply systems, said heater comprising: an electrically inert core having an aperture therein for the passage of a fuel-air mixture therethrough; and at least one PTC heater disposed within a cavity in said core, said PTC heater being disposed upon an electrically conductive heat transmitting metal stratum, whereby to conduct current from one side of a power supply to one side of said PTC heater; and means connecting the other side of said PTC heater to the source of the electricity and means electrically insulating said connecting means from the other elements of said heater; and a graphite stratum disposed against said electrically conductive heat transmitting metal stratum whereby to act as a heat transmitting gasket for attachment of the heater to a carburetor.

Claim 3

The heater according to claim 1 further including a cellulosic gasket member disposed between said conducting means and said inert core.

Claim 4

The heater according to claim 1 wherein the sheet of metal is copper.

Claim 5

The heater according to claim 1 further including aperture means in said sheet whereby to provide an opening for the passage of the fuel-air mixture.

Claim 6

The heater according to claim 1 wherein an array of PTC heaters is disposed around said aperture means and upon said electrically conductive stratum and a plurality of cavities are disposed within said core to receive said PTC heaters.

Claim 7

The heater according to claim 5 further including an electrically conductive ring disposed within said core and attached to an external power supply and further including spring means which urge against the PTC heaters.

Claim 8

The heater according to claim 1 or 5 wherein said graphite stratum includes a layer of fibrous graphite disposed upon a sheet of foil.

Claim 9

The heater according to claim 7 wherein the graphite layer is sandwiched between two foil layers.

Claim 10

In combination with a manifold and a carburetor of an internal combustion engine, a heater for heating fuel supply systems disposed between said manifold and said carburetor, said heater comprising: an electrically inert core having an aperture therein for the passage of a fuel-air mixture therethrough; and at least one PTC heater disposed within a cavity in said core, said PTC heater being disposed upon an electrically conductive heating transmittal metal stratum whereby to conduct electricity to one side of a power supply to one side of said PTC heater; and means connecting the other side of said PTC heater to the source of electricity and means electrically insulating said connecting means from other elements of said heater, said manifold, and said carburetor; and a graphite gasket stratum disposed between said carburetor and said conductive heating transmittal metal stratum, whereby heat from said PTC heater is carried to said carburetor from said PTC heater.

Claim 11

In combination with a manifold and a carburetor of an internal combustion engine, a heater for heating fuel supply systems disposed between said manifold and said carburetor, said heater comprising: an electrically inert core having an aperture therein for the passage of a fuel-air mixture therethrough; and at least one PTC heater disposed within a cavity in said core, said PTC heater being disposed upon an electrically conductive heating transmittal metal stratum whereby to conduct electricity to one side of a power supply to one side of said PTC heater; and means connecting the other side of said PTC heater to the source of electricity and means electrically insulating said connecting means from other elements of said heater, said manifold, and said carburetor; and a graphite gasket stratum disposed between said carburetor and said conductive heating transmittal metal stratum, whereby heat from said PTC heater is carried to said carburetor from said PTC heater.

Claim 12

The heater according to claim 9 further including a cellulosic gasket member disposed between said conducting means and said inert core.

Claim 13

The heater according to claim 9 wherein the sheet of metal is copper.

Claim 14

The heater according to claim 10 further including aperture means in said sheet whereby to provide an opening for the passage of the fuel-air mixture in communication with the aperture in the electrically inert core.

Claim 15

The heater according to claim 9 wherein an array of PTC heaters is disposed around said aperture means and upon said electrically conductive stratum and a plurality of cavities are disposed within said core to receive said PTC heaters.

Claim 16

The heater according to claim 13 further including an electrically conductive ring disposed within said core and attached to an external power supply and further including spring means which urge against the PTC heaters.

Claim 17

The heater according to claim 9 wherein said graphite stratum includes a layer of fibrous graphite disposed upon a sheet of foil.

Claim 18

The heater according to claim 15 wherein the graphite layer is sandwiched between two foil layers.