.~ By axially relatively moving vane or abutment sections
DEFINITION
Classification: 418/111
(under subclass 104) Apparatus wherein a vane or an abutment comprises a plurality of axially movable portions of substantial dimension having end surfaces movable into sealing relationships with respective cylinder sides.
(1) Note. A vane or abutment provided with axially movable seal means at its ends to engage the cylinder sides is not considered to comprise a plurality of axially movable portions of substantial dimension and is classified in the appropriate sealing subclasses below.
