(under subclass 335) Subject matter including a spigot carried packing with means to expand the packing into sealing relationship with a surrounding member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
95+, for fluid pressure expanded packings.
140.1, for an expanding spigot in a pipe-to-pipe-to-plate joint system.
148.5, for an intermediate joint with expansible spigots.
196, for an expansible spigot carried packing in an end to side or plate joint. 322, for a coupling including a movable jaw portion on the spigot or bell.
339+, for couplings with wedge controlled packings.
346, for packing expanding means in a coupling providing frictional retention with insertion.
348, for couplings including a separable follower between the tightener and packing.
356+, for a packed coupling with a screw gland.
SEE OR SEARCH CLASS
138, Pipes and Tubular Conduits,
90, for similar structure in test plug combination.
