Claims
- 1. An improved plastic coated pipe coupling, the improvement comprising:
- a coupling nut having an end face and an exterior plastic coating, the coating forming an integral collar;
- a coupling body having a plastic coating, the body coating having an integral upstanding flange, the body threadedly engaging said nut; and
- a resilient annular moisture barrier adhered to said integral upstanding flange and engaging the plastic coating on the coupling nut at the end face of the coupling nut.
- 2. The pipe coupling of claim 1, further comprising a thin polymeric abrasion resistant anti-frictional element located adjacent to the moisture barrier opposite the upstanding flange.
- 3. An improved plastic coated pipe coupling, the improvement comprising:
- a threaded metallic coupling nut having an end face and polymer coating having an integral collar thereon;
- a threaded metallic body having a plastic coating with an integral upstanding flange thereon, the flange having at least one face perpendicular to the axis of the body, the body threadedly engaging the nut;
- a resilient annular moisture barrier having a face of thin polymeric abrasion resistant and anti-frictional material; and
- the flange and end face adapted to engage the moisture barrier therebetween.
- 4. An improved plastic coated pipe coupling, the improvement comprising:
- a threaded metallic coupling nut having an end face and an exterior polymeric coating, the end face being uncoated;
- a threaded metallic body having a plastic coating with an integral upstanding flange formed thereon, the flange having at least one face perpendicular to the axis of the body, the body threadedly engaging the nut;
- a resilient annular moisture barrier;
- the flange and end face adapted to engage the moisture barrier therebetween;
- the resilient annular moisture barrier having a face of thin polymeric abrasion resistant and anti-frictional material.
- 5. The improved plastic coated pipe coupling of claim 4 wherein said abrasion resistant and anti-friction material is mylar.
- 6. An improved plastic coated pipe coupling, the improvement comprising:
- a mandrel;
- a metallic coupling nut located on the mandrel having an end face, and an exterior polymeric coating;
- a metallic body located on the mandrel having a plastic coating and a flange having at least one face perpendicular to the axis of the body;
- a spacer for locating the nut on the mandrel with respect to the body; and
- a means for separating the nut from the body between the end face and flange.
- 7. An improved plastic coated pipe coupling, the improvement comprising:
- a mandrel for aligning said couplings end to end;
- a metallic coupling nut located on the mandrel having an end face, and an exterior polymeric coating having an integral collar;
- a metallic body having a plastic coating having an integral upstanding flange, the flange having at lest one face perpendicular to the axis of the body;
- a resilient moisture barrier;
- a spacer for repositioning the nut with respect to the body; and
- a means for separating a nut and body between the end face and flange whereby said flange and end face are adapted to engage the moisture barrier therebetween.
Parent Case Info
This application is a continuation of application Ser. No. 301,831, filed 1/26/89 now abandoned, which is a division of Ser. No. 088,426 filed 8/24/87 now U.S. Pat. No. 4,827,596.
US Referenced Citations (15)
Non-Patent Literature Citations (1)
Entry |
Sketches, provided by the inventor's assignee, showing Previous Coating Method, p. 1. |
Divisions (1)
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Number |
Date |
Country |
Parent |
88426 |
Aug 1987 |
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Continuations (1)
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Number |
Date |
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Parent |
301831 |
Jan 1989 |
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