F01B7/00 - CPC Classification Index

ClassID:

136417 ⎘

F01B7/00 - CPC Classification

Classification description:

Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders

Sub-classes:

F01B7/02 » with oppositely reciprocating pistons 75
F01B7/16 » with pistons synchronously moving in tandem arrangement 25
F01B7/18 » with differential piston 7
F01B7/20 » with two or more pistons reciprocating one within another, e.g. one piston forming cylinder of the other 16

Recent Application in this class:

20210040852

Cylinder actuator

20150059681

Polygon oscillating piston engine

20150000514

Rotary drive system having a cam follower with detachable wheel support

20110061631

Engine with a variable volume chamber

13633097

Opposed piston engine and elements thereof