(under subclass 84) Joints made to be capable of moving or adjusting the sections connected by the joint to an out-of-line relation.
(1) Note. See Class 138, Pipes and Tubular Conduits, subclass 120 for pipes having movable or adjustable sections.
(2) Note. See Class 285, Pipe Joints or Couplings, subclasses 121.3+ for concentric joints with relative motion, subclasses 121.6+ for coupling for plural noncommunicating lines with relatively motion, subclasses 144.1+ for serial relatively movable joints, and subclasses 184+ for a coupling providing an adjustable angle between the members.
(3) Note. See Class 403, Joints and Connections, subclasses 52+ for articulated joints in general.
