(under the class definition) Devices in which the device, or parts of the device, are equipped with means to restore, or aid in restoring the device to its former condition after decay, injury or partial destruction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
31+, for coupling means insertable between two fixed pipe ends.
148.6+, for compound joints, which include an external packing and compressor therefor.
337, for external packing means, generally disclosed to stop leakage around an existing joint.
SEE OR SEARCH CLASS
137, Fluid Handling, 315+, for repair features in fluid material handling systems and valves and see the Search Notes thereunder.
138, Pipes and Tubular Conduits,
97+, for pipe repair devices, especially subclass 99 for external patches with means for stopping leaks in a pipe or joint but which are not structurally related to the joint.
