Releasable seal or cleaner disengaged by projection on inner member:
(under subclass 75.11) Above ground apparatus comprising a detachably connected flow preventing or enclosure device for tubing, pipe, rod, or wireline within a casing opened by a lug, movable rod, collar, trip member, or protuberance on the tubing, pipe, rod, or wireline to cause the device to be detached from the well.
SEE OR SEARCH CLASS
15, Brushing, Scrubbing, and General Cleaning,
220.4, for fabric type wiper for rods, pipes or cables, subclass 236.01 for a scraper, and subclass 236.1 for a rotary scraper.
277, Joint Packing,
5+, for a packing which opens or yields to allow a projection on the rod to pass, subclasses 19+, for sealing means with external fluid receiver usually between a casing and an inner rod, pipe or cable, subclass 31 for rotatable packing for axially moving rod, subclass 33 for axially biased rod.
