(under subclass 700) Apparatus for inserting or removing a piston ring in the receiving groove of a piston, (e.g., for an internal combustion engine) or for facilitating such an operation.
(1) Note. This subclass includes, for example: (a) a piston ring compressor for compressing a piston ring around a piston or for contracting and holding a single ring for the reception of a mandrel holder. (b) apparatus for expanding a ring for removal or application to a piston.(c) a guide through which a piston with a ring(s) is moved, the guide compressing the ring during such movement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
229, for a circular spring applier or remover.
269, for apparatus for compressing and holding a group of piston rings.
SEE OR SEARCH CLASS
81, Tools, 3.4+, for a similarly constructed tool for use in removing receptacle closures.
