.~.~ Cooperating valve ports in cylinder and fixed member {3}
214
.~.~.~ Ported arcuate slide face on which cylinder moves
DEFINITION
Classification: 91/214
(under subclass 211) Apparatus in which the stationary member has an arcuate surface, an arcuate surface on the cylinder engaging therewith, fluid ports in the surfaces, the oscilation of the cylinder causing relative sliding motion between the two surfaces to align the ports and valve the motive fluid.