PVC pipe coupling

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8020899
APP PUB NO 20100001520A1
SERIAL NO

12165753

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A threaded coupling for connecting a threaded first connecting drop pipe to a second connecting drop pipe. The coupling has a first female end having an enlarged exterior diameter and an interior diameter defining a lead in section which provides strength to resist lateral forces exerted on the threaded drop pipe connection. Adjacent the lead in section, internal threads are located in the first female end of the coupling. A second female end having an interior diameter substantially the same size as the lead in section of the first female end is located adjacent the internal threads, opposite the first female end. A male connecting end of a first connecting drop pipe having external threads is inserted into the lead in section and screwed into the coupling. A male connecting end of a second connecting drop pipe is coated with an adhesive and inserted into the second female end.

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Patent Owner(s)

Patent OwnerAddress
JOHNSON SCREENS INC1950 OLD HWY 8 NEW BRIGHTON MN 55112

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hanna, Thom M Evergreen, US 1 10
Hennemann, Thomas L Cottage Grove, US 12 167
Valliere, James E Toms River, US 1 10

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Patent Citation Ranking

  • 6 Citation Count
  • F16L Class
  • 5.80 % this patent is cited more than
  • 14 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges4345616646118531201 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 80100 +0255075100125150175200225250275300325350375400425450475500

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