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Fluoropolymer Insulator Stripper

IP.com Disclosure Number: IPCOM000087692D
Original Publication Date: 1977-Mar-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Hufford, DS: AUTHOR [+2]

Abstract

Certain fluoropolymer resins e.g. TEFZEL* are used for electrical insulation. Stripper 1 removes such insulation.

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Fluoropolymer Insulator Stripper

Certain fluoropolymer resins e.g. TEFZEL* are used for electrical insulation. Stripper 1 removes such insulation.

Stripper 1 (Fig. 1) includes a pair of movable inclined stainless steel plates or strips 2, 3. Juxtaposed on each side of the plates 2, 3 in a compatible inclined manner is one of the torch heads 4, 5. These feed a combustible gas mixture G of excess oxygen and propane (e.g., in the ratio of 5 or 6 units of oxygen to one unit of propane) the apex of the plates 2, 3.

Flat insulated cable 6 has a conductive core 7 (Fig. 1a) such as copper and fluoropolymer resin insulation 8, e.g., TEFZEL. It is positioned between plates 2, 3 so that its lower end protrudes through their apex a desired distance D along which the insulation 8 is to be removed. Plates 2, 3 are moved towards each other, arrows 9, 10, clamping the cable 6 therebetween and masking the remainder of cable 6 beyond the direction D. The edge faces 2a, 3a of strips 2, 3, respectively, are contoured to fit snugly against the flat surfaces of cable 6. Torch heads 4, 5 are turned on and ignited for a time period, e.g.,5 to 7 seconds, sufficient to remove the insulation 8 and expose the core 7 along the length D. A cooling air stream is passed between the facing surfaces S of plates 2, 3 and the surfaces of the cable 6, in a direction normal to the view of Fig. 1, to remove excess heat. * Trademark of E. I. du Pont de Nemours & Co.

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