(under subclass 273) Devices, wherein the fastener is in the form of a ring which surrounds the receptacle mouth and closure binding them together. A ring of this type would not, in and of itself, form a closure.
(1) Note. An example of a ring type fastener is the screw threaded ring which holds the closure in place on the standard "Mason" jar. This note is meant purely as an example as the inclusion of a screw thread would place the patent in indented subclass 276.
SEE OR SEARCH CLASS
220, Receptacles,
319+, for closure fasteners for metallic receptacles in the form of a ring.
