F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
ENGINES AND PUMPS
 F02
COMBUSTION ENGINES (cyclically operating valves therefor, lubricating, exhausting, or silencing engines F01); HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
 F02F
CYLINDERS, PISTONS, CASINGS OR CRANKCASE VENTILATION FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES (specially adapted for rotary-piston or oscillating-piston internal-combustion engines F02B; specially adapted for gas-turbine plants F02C; specially adapted for jet-propulsion plants F02K)
 F02F

Note(s)

  1. Attention is drawn to the notes preceding class F01.
  2. In considering the relationship between class F16 and sub-class F02F, class F16 will take precedence unless the subject-matter is specific to combustion engines.
 F02F 1/00
Cylinders; Cylinder heads (in general F16J)
 F02F 1/02
·  having cooling means (cylinder heads F02F 1/26)
 F02F 1/04
·  ·  for air cooling
 F02F 1/06
·  ·  ·  Shape or arrangement of cooling fins; Finned cylinders
 F02F 1/08
·  ·  ·  ·  running-liner and cooling-part of cylinder being different parts or of different material
 F02F 1/10
·  ·  for liquid cooling
 F02F 1/12
·  ·  ·  Preventing corrosion of liquid-swept surfaces
 F02F 1/14
·  ·  ·  Cylinders with means for directing, guiding, or distributing liquid stream
 F02F 1/16
·  ·  ·  Cylinder liners of wet type
 F02F 1/18
·  Other cylinders
 F02F 1/20
·  ·  characterised by constructional features providing for lubrication
 F02F 1/22
·  ·  characterised by having ports in cylinder wall for scavenging or charging
 F02F 1/24
·  Cylinder heads
 F02F 1/26
·  ·  having cooling means
 F02F 1/28
·  ·  ·  for air cooling
 F02F 1/30
·  ·  ·  ·  Finned cylinder heads
 F02F 1/32
·  ·  ·  ·  ·  the cylinder heads being of overhead-valve type
 F02F 1/34
·  ·  ·  ·  ·  with means for directing or distributing cooling medium (F02F 1/32 takes precedence)
 F02F 1/36
·  ·  ·  for liquid cooling
 F02F 1/38
·  ·  ·  ·  the cylinder heads being of overhead-valve type
 F02F 1/40
·  ·  ·  ·  Cylinder heads with means for directing, guiding, or distributing liquid stream (F02F 1/38 takes precedence)
 F02F 1/42
·  ·  Shape or arrangement of intake or exhaust channels in cylinder heads
 F02F 3/00
Pistons (in general F16J)
 F02F 3/02
·  having means for accommodating or controlling heat expansion
 F02F 3/04
·  ·  having expansion-controlling inserts
 F02F 3/06
·  ·  ·  the inserts having bimetallic effect
 F02F 3/08
·  ·  ·  the inserts being ring-shaped
 F02F 3/10
·  having surface coverings (F02F 3/02 takes precedence)
 F02F 3/12
·  ·  on piston heads
 F02F 3/14
·  ·  ·  within combustion chambers
 F02F 3/16
·  having cooling means
 F02F 3/18
·  ·  the means being a liquid or solid coolant, e.g. sodium, in a closed chamber in piston
 F02F 3/20
·  ·  the means being a fluid flowing through or along piston
 F02F 3/22
·  ·  ·  the fluid being liquid
 F02F 3/24
·  having means for guiding gases in cylinders, e.g. for guiding scavenging charge in two-stroke engines
 F02F 3/26
·  having combustion chamber in piston head (the surface thereof being covered F02F 3/14)
 F02F 3/28
·  Other pistons with specially-shaped head
 F02F 5/00
Piston rings, e.g. associated with piston crown
 F02F 7/00
Casings, e.g. crankcases (engine casings in general F16M)
 F02F 9/00
Crankcase ventilating or breathing
 F02F 9/02
·  by means of additional source of positive or negative pressure
 F02F 9/04
·  having means for purifying air before leaving crankcase, e.g. removing oil
 F02F 9/06
·  specially adapted for submersible engines, e.g. of armoured cars
 F02F 11/00
Arrangements of sealings in combustion engines (piston rings F02F 5/00; sealings per se F16J)