F01B 7/00 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)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
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)
Full Title
Full titles differ between systems:
Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
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)
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- F01B 7/20 with two or more pistons reciprocating one within another, e.g. one piston forming cylinder of the other IPC+CPC Available in IPC and CPC