(0)F02F:0/0:
IPC6
SECTION F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS;BLASTING
CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES;...
F02F
1/1

F 02 F

 CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES (specially adapted for rotary-piston or oscillating-piston internal-combustion engines F 02 B; specially adapted for gas-turbine plants F 02 C; specially adapted for jet-propulsion plants F 02 K ) [2]
 

Notes

(1)

 Attention is drawn to the Notes preceding class F 01.

(2)

 Class F 16 takes precedence over this subclass, except for subject matter specific to combustion engines.

 

 

 
 

 1
/ 00 Cylinders; Cylinder heads (in general F 16 J)

1
/ 02 • having cooling means (cylinder heads F 02 F 1/26)  

1
/ 04 • • for air cooling  

1
/ 06 • • • Shape or arrangement of cooling fins; Finned cylinders  

1
/ 08 • • • • running-liner and cooling-part of cylinder being different parts or of different material  

1
/ 10 • • for liquid cooling  

1
/ 12 • • • Preventing corrosion of liquid-swept surfaces  

1
/ 14 • • • Cylinders with means for directing, guiding, or distributing liquid stream  

1
/ 16 • • • Cylinder liners of wet type  

1
/ 18 • Other cylinders  

1
/ 20 • • characterised by constructional features providing for lubrication  

1
/ 22 • • characterised by having ports in cylinder wall for scavenging or charging  

1
/ 24 • Cylinder heads  

1
/ 26 • • having cooling means  

1
/ 28 • • • for air cooling  

1
/ 30 • • • • Finned cylinder heads  

1
/ 32 • • • • • the cylinder heads being of overhead-valve type  

1
/ 34 • • • • • with means for directing or distributing cooling medium (F 02 F 1/32 takes precedence)  

1
/ 36 • • • for liquid cooling  

1
/ 38 • • • • the cylinder heads being of overhead-valve type  

1
/ 40 • • • • cylinder heads with means for directing, guiding, or distributing liquid stream (F 02 F 1/38 takes precedence)  

1
/ 42 • • Shape or arrangement of intake or exhaust channels in cylinder heads  
 

 3
/ 00 Pistons (in general F 16 J)

3
/ 02 • having means for accomodating or controlling heat expansion  

3
/ 04 • • having expansion-controlling inserts  

3
/ 06 • • • the inserts having bimetallic effect  

3
/ 08 • • • the inserts being ring-shaped  

3
/ 10 • having surface coverings (F 02 F 3/02 takes precedence)  

3
/ 12 • • on piston heads  

3
/ 14 • • • within combustion chambers  

3
/ 16 • having cooling means  

3
/ 18 • • the means being a liquid or solid coolant, e.g. sodium, in a closed chamber in piston  

3
/ 20 • • the means being a fluid flowing through or along piston  

3
/ 22 • • • the fluid being liquid  

3
/ 24 • having means for guiding gases in cylinders, e.g. for guiding scavenging charge in two-stroke engines  

3
/ 26 • having combustion chamber in piston head (the surface thereof being covered F 02 F 3/14)  

3
/ 28 • Other pistons with specially-shaped head  
 

 5
/ 00 Piston rings, e.g. associated with piston crown
 

 7
/ 00 Casings, e.g. crankcases (engine casings in general F 16 M)
 

 11
/ 00 Arrangements of sealings in combustion engines (piston rings F 02 F 5/00; sealings per se F 16 J)