Insulated conductor with arc propagation resistant properties and method of manufacture
AssigneeTensolite Company
InventorsSutherland, Jack E., Donald S. Dombrowsky
Life of this patent
Estimating the term…
Abstract
An insulated conductor having improved arc propagation resistant properties. The insulation consists of a first layer of a composite tape of polyimide between two layers of polytetrafluoroethylene. The second overlaying tape layer is unsintered polytetrafluoroethylene. Further disclosed is a process for manufacturing a sintered wire product having a tin plated electrical conductor.
Claims13
An insulated electrical conductor having arc propagation resistant properties comprising:
- a conductor of electrical current;
- a first film overlaying said conductor, said first film comprised of a composite of a polyimide layer between two layers of polytetrafluoroethylene;
- and
- a second film overlaying said first film, said second film comprised of unsintered polytetrafluoroethylene.
An insulated conductor having arc propagation resistant properties comprising:
- a conductor of electrical current;
- a first film overlaying said conductor, said first film comprised of a composite of a polyimide layer between two layers of polytetrafluoroethylene, said polytetrafluoroethylene layers including a sealable component;
- and
- a second film overlaying said first film, said second layer comprised of unsintered polytetrafluoroethylene.
An insulated conductor having arc propagation resistant properties, comprising:
- a conductor of electrical current;
- a first film overlaying said conductor, said first film comprised of a composite of a polyimide layer between two layers of polytetrafluoroethylene, said polytetrafluoroethylene layer including a sealable component;
- and
- a second film overlaying said first film, said second film comprised of unsintered polytetrafluoroethylene, further wherein said first and second films are heat treated at a temperature sufficient to activate said sealable component of said first film and to sinter said polytetrafluoroethylene of said second film.
A method of manufacturing an insulated conductor having arc propagation resistant properties, comprising:
- applying to a conductor of electrical current having a tin plating a first overlapping tape film, said first tape film comprised of a composite of a polyimide layer between two layers of polytetrafluoroethylene;
- applying over said first overlapping tape film a second overlapping tape film of sintered polytetrafluoroethylene;
- and
- heating said conductor covered with said first and second tape films to a temperature sufficient to sinter said polytetrafluoroethylene and insufficient to degrade said tin coating.
Dependencies are inferred from the claim text.