(under subclass 75.11) Above ground apparatus comprising an enclosure or deflecting member, other than the casing head, placed about a section of well pipe so that the liquid contents of the pipe may be prevented from being indiscriminately emitted.
(1) Note. Pipe wipers or cleaners are not properly classifiable here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
80.1, for a retractable pipe section to allow closing of gate valve or flapper valve for rod or pipe.
82.1, for a releasable seal or cleaner for an inner member.
SEE OR SEARCH CLASS
285, Pipe Joints or Couplings,
13+, for enclosures about pipe couplings for collecting leakage from the couplings and subclasses 148.6+ for a leak-gland type coupling.
