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PCE
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DIFF Subgroup
F01B 7/18

with differential piston (F01B7/20 takes precedence)

Introduced: September 1968

Title

Titles differ between systems:

IPC: with differential piston

CPC: with differential piston (F01B7/20 takes precedence)

Full Title

Full titles differ between systems:

IPC:

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

CPC:

Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders (in opposite arrangement relative to main shaft F01B1/08) > with differential piston (F01B7/20 takes precedence)

No child classifications to compare. This is a leaf node in both IPC and CPC.