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Duct coupler apparatus
ApplicationNo. 055079 filed on 01/25/2002
US Classes:285/139.1, Plate clamped between flanged nipple and separate fastener285/139.2, Nipple includes seal285/903CORRUGATED
ExaminersPrimary: Nicholson, Eric K.
Attorney, Agent or Firm
International ClassF16L 005/02
AbstractA grout vent for a tendon-receiving duct having a tubular fitting with an interior passageway, a nut secured around an exterior surface of the tubular fitting, and a seal extending around the tubular fitting and residing against a surface of the nut. The tubular fitting has a connector at an end thereof for engaging an interior surface of the duct. The tubular fitting extends through a hole formed in a corrugation of the duct so that a shoulder of the connector will abut an interior surface of a wall of the duct. The nut is threadedly engaged with an exterior surface of the tubular fitting so as to exert a compressive force against the seal. A grout line extends through the interior passageway of the tubular fitting so as to allow grout to be injected into an interior passageway of the duct.