(under subclass 162) Devices under the class definition comprising a receptacle so constructed and arranged that the receptacle or a part thereof is left in the well and separated from its lowering means, if any, when performing or after performing its intended function.
(1) Note. The part left in the well must comprise more than a mere knock out or frangible closure.
(2) Note. These devices are usually intended to plug the well by rupturing, breaking up or parting the receptacle while releasing its contents.
SEE OR SEARCH THIS CLASS, SUBCLASS:
205, and 227+, for well screens or well screen parts which may be lifted from the well after sediment collects therein.
