Hermetic lead wire
AssigneeBelden Inc.
InventorDuane E. Torgerson
Life of this patent
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Abstract
A hermetic lead wire for use in conducting electricity to a motor in a hermetically sealed system such as a refrigeration system is formed with an electrically wound, laminated flexible foil tape surrounding an internal stranded conductor. The laminated tape is formed with an inner nonwoven fibrous layer of polyester fibers for interlocking with the conductor when melted by a hot stripping tool. An outer impervious foil layer of polyester on said laminated tape provides a dielectric shield for the wire. Preferably, the laminated tape is helically wound about the conductor and is covered with an outer flexible braided sheath of polyester filaments.
Claims6
A hermetic lead wire for use in hermetically sealed electrical apparatus comprising an elongated central flexible conductor having a plurality of metallic strands extending longitudinally of the wire for carrying an electric current,
- an inner flexible layer of meltable non-woven polyester fibers composed of fiber forming polymers of polyethylene terphthalate surrounding said central stranded conductor and disposed in direct engagement with said central stranded conductor for interlocking with the conductor when melted with a heated stripping tool during the manufacture of said apparatus,
- an outer flexible layer of plastic film surrounding said inner layer of meltable non-woven polyester fibers and providing a dielectric shield for the wire, said non-woven polyester fibers being secured to and carried by said plastic film layer and being applied to said metallic strands by said plastic film layer, and
- an outer braided flexible sheath of polyester surrounding said plastic film and providing a protective shield for said plastic film layer.
A hermetic lead wire for connection to an electric motor in a hermetically sealed refrigeration system comprising an elongated central flexible conductor having a plurality of metallic strands extending longitudinally of the wire for carrying an electical current, a helically wound laminated flexible tape surrounding said internal conductor and providing a dielectric shield for the wire, said laminated tape comprising an inner fibrous layer of meltable non-woven polyester fibers composed of fiber forming polymers of polyethylene terephthalate helically disposed about said conductor for interlocking with said conductor when melted by a hot stripping tool and an outer impervious film of plastic helically wrapped about said metallic strands, and an outer flexible braided sheath of polyester surrounding said laminated tape and extending longitudinally of the wire to provide an abrasion resistant sheath for said wire.
Dependencies are inferred from the claim text.