Pipe joints or couplings – With indicator – alarm or inspection means
Patent
1992-01-06
1993-06-15
Arola, Dave W.
Pipe joints or couplings
With indicator, alarm or inspection means
285319, 285921, 285 39, A16L 3500
Patent
active
052191885
ABSTRACT:
Prevention of incomplete connection of pipes, and easy and visual checking for incomplete connection between the male and female members from the outside, and the prevention of dirt and dust from entering the connection are aimed. To attain these objects, provided is a construction for preventing incomplete connection of pipes which connects the male member having a flange-like projection at its external periphery to the female member having a retainer disposed at its internal periphery for locking the flange-like projection on the male member by inserting the male member a specified distance into the female member, the construction comprising a cylindrical member mounted on the male member for covering the external periphery at the opening side of female member and locking means disposed on the cylindrical member and the female member to lock the members, whereby the cylindrical member is locked to the female member by the locking means so that the cylindrical member covers the external periphery on the opening side of the female member when the male member is inserted the specified distance into the female member.
REFERENCES:
patent: 3569903 (1971-03-01), Brishka
patent: 4035005 (1977-07-01), De Vincent et al.
patent: 4730856 (1988-03-01), Washizu
patent: 4923228 (1990-05-01), Laipply
patent: 4944536 (1990-07-01), Bartholomew
patent: 5069424 (1991-12-01), Dennany
Abe Takeshi
Kaishio Mitsuo
Arola Dave W.
Sanoh Kogyo Kabushiki Kaisha
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