PIPE CONNECTOR CONSISTING OF SLEEVE AND INSERT FOR PLASTIC PIPES Russian patent published in 1997 - IPC

FIELD: pipe line fittings. SUBSTANCE: sleeve of connector has inlet guide portion, end guide portion and widened section which is provided with mounting groove for locking ring and sealing chamber for sealing jaw connected with holding ring and funnel-shaped in uncoupled state in direction of insert which has closing jaw conically widening relative to sealing jaw and adjoining the inner wall of sealing chamber in uncoupled state. Sealing chamber is provided with compression fin running on its inner surface over circumference; this fin has skew which extends as surface inclined at oblique angle to lateral surface of holding ring. Holding ring is provided with groove for relieving compression which runs over circumference; it is open on side opposite to side of mounting; it extends to area of cross section where compression fin is located. Area under compression relief groove is made as extension of sealing jaw to compression fin. EFFECT: enhanced efficiency. 4 cl, 4 dwg