Pipe coupling for well casing
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United States of America Patent
Stats
-
Apr 5, 1988
Grant Date -
N/A
app pub date -
Apr 7, 1987
filing date -
Apr 7, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pipe coupling for a stainless steel well casing includes a square threaded male member which is received within a square threaded female member so that the coupling is initially loose. O-ring seals are provided to prevent the fluid being pumped from corroding threaded portions of the male and female members. Each member has a shoulder which is abutted by the end of the other member in order to lock the members in rigid relationship.
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Family
International Classification(s)
- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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