Temperature responsive resistance element for a temperature sensitive control sensor

Claim 2

A temperature sensitive control sensor for use in sensing temperature in a solid liquid or gas mass, said sensor comprising metal sheath means, a temperature sensitive resistance element having a lead at each end, terminal wire means extending from the sheath means and electrically connected to said element, and ceramic insulant material packed between the terminal wire means and sheath means by swaging of said sheath means, said temperature sensitive resistance element including a ceramic core, a temperature sensitive resistance wire wound on said core, said wire having a high coefficient of resistance change with temperature increase, means electrically connecting said leads to opposite ends of said resistance wire and said leads having a low coefficient of resistance change with temperature, and an electrically non-conductive heat resistive coating over the entire element except the ends of the leads.

Claim 3

The sensor as defined in claim 1, wherein said sheath means includes two side-by-side sheath assemblies including sheaths having terminals extending therethrough and protruding from opposite ends, ceramic insulant material between the sheaths and terminals and packed by swaging of the sheaths, means electrically connecting the leads of said element to adjacent ends of said terminals at one end of the sheaths, ceramic insulating means encapsulating the element, leads, and terminal ends, and rigid cover plates secured over the element and to the sheaths.

Claim 4

The sensor as defined in claim 1, wherein said sheath means includes a single continuous sheath, said terminal wire means including terminals extending from said sheath and inwardly from opposite ends and terminating short of each other, ceramic insulant material packed between the terminals and the sheath by swaging of the sheath in the area of the terminals, said resistance element being disposed within the sheath between the adjacent ends of the terminals, resilient conductor means in the form of coil springs connected between the terminals and the leads of said elements, and said sheath being U-shaped.

Claim 5

The sensor as defined in claim 1, wherein said sheath means includes a straight continuous sheath, said terminal wire means including a single terminal extending from the sheath and inwardly from one end and terminating short of the other end, ceramic insulant material packed between the terminal and sheath by swaging of the sheath in the area of the terminal, said resistance element being disposed within the sheath adjacent the inner end of the terminal and the adjacent end of the sheath, means connecting one lead of the element to the sheath, resilient conductor means in the form of a coil spring connecting the other lead to the terminal, and said terminal wire means including a second terminal connected to the exterior of said sheath.

Claim 6

A temperature sensitive control sensor for use in sensing temperature in a solid, liquid or gas mass, said sensor comprising metal sheath means, a temperature sensitive resistance element having a lead at each end, terminal wire means extending from the sheath means and electrically connected to said element, and ceramic insulant material packed between the terminal wire means and sheath means by swaging of said sheath means, said sheath means including a single continuous sheath, said terminal wire means including terminals extending from said sheath and inwardly from opposite ends and terminating short of each other, ceramic insulant material packed between the terminals and the sheath by swaging of the sheath in the area of the terminals, said resistance element being disposed within the sheath between the adjacent ends of the terminals, resilient conductor means in the form of coil springs connected between the terminals and the leads of said elements, and said sheath being U-shaped.

Claim 7

A temperature sensitive control sensor for use in sensing temperature in a solid, liquid or gas mass, said sensor comprising metal sheath means, a temperature sensitive resistance element having a lead at each end, terminal wire means extending from the sheath means and electrically connected to said element, and ceramic insulant material packed between the terminal wire means and sheath means by swaging of said sheath means, said sheath means including a single continuous sheath, said terminal wire means including terminals extending from said sheath and inwardly from opposite ends and terminating short of each other, ceramic insulant material packed between the terminals and the sheath by swaging of the sheath in the area of the terminals, said resistance element being disposed within the sheath between the adjacent ends of the terminals, resilient conductor means in the form of coil springs connected between the terminals and the leads of said elements, and said sheath being U-shaped.

Claim 8

A temperature sensitive control sensor for use in sensing temperature in a solid, liquid or gas mass, said sensor comprising metal sheath means, a temperature sensitive resistance element having a lead at each end, terminal wire means extending from the sheath means and electrically connected to said element, and ceramic insulant material packed between the terminal wire means and sheath means by swaging of said sheath means, said sheath means including a straight continuous sheath, said terminal wire means including a single terminal extending from the sheath and inwardly from one end and terminating short of the other end, ceramic insulant material packed between the terminal and sheath by swaging of the sheath in the area of the terminal, said resistance element being disposed within the sheath adjacent the inner end of the terminal and the adjacent end of the sheath, means connecting one lead of the element to the sheath, resilient conductor means in the form of a coil spring connecting the other lead to the terminal, and said terminal wire mean including a second terminal connected to the exterior of said sheath.

Claim 9

A temperature sensitive control sensor for use in sensing temperature in a solid, liquid or gas mass, said sensor comprising metal sheath means, a temperature sensitive resistance element having a lead at each end, terminal wire means extending from the sheath means and electrically connected to said element, and ceramic insulant material packed between the terminal wire means and sheath means by swaging of said sheath means, said sheath means including a straight continuous sheath, said terminal wire means including a single terminal extending from the sheath and inwardly from one end and terminating short of the other end, ceramic insulant material packed between the terminal and sheath by swaging of the sheath in the area of the terminal, said resistance element being disposed within the sheath adjacent the inner end of the terminal and the adjacent end of the sheath, means connecting one lead of the element to the sheath, resilient conductor means in the form of a coil spring connecting the other lead to the terminal, and said terminal wire mean including a second terminal connected to the exterior of said sheath.

Claim 10

A temperature sensitive resistance element for sensing temperature comprising a rigid core of electrical insulating material, a temperature sensitive resistance wire spatially wound on said core, said wire having a high coefficient of resistance change with temperature increase, lead means having a low coefficient of resistance change with temperature electrically connected to the opposite ends of said resistance wire, each lead means including an integral cap and lead wherein the cap is fittable over the end of the core, means connecting said lead meaNs to said resistance wire, and electrically non-conductive heat resisting ceramic cement encapsulating said wire and core and said connecting means.

Claim 11

A temperature sensitive resistance element for sensing temperature comprising a rigid core of electrical insulating material, a temperature sensitive resistance wire spatially wound on said core, said wire having a high coefficient of resistance change with temperature increase, lead means having a low coefficient of resistance change with temperature electrically connected to the opposite ends of said resistance wire, each lead means including an integral cap and lead wherein the cap is fittable over the end of the core, means connecting said lead meaNs to said resistance wire, and electrically non-conductive heat resisting ceramic cement encapsulating said wire and core and said connecting means.