Skip over navigation
Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
Collapse
CYLINDERS, PISTONS OR CASINGS, 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 )
NOTE
-
Attention is drawn to the notes preceding class F01 .

In considering the relationship between class F16 and subclass F02F , class F16 will take precedence unless the subject-matter is specific to combustion engines.

Collapse
Cylinders ; Cylinder heads( in general F16J )
.
{
Integrally formed cylinders and cylinder heads
}
F02F 1/004
.
{
Cylinder liners( F02F 1/08 , F02F 1/16 take precedence )
}
F02F 2001/006
.
{
having a ring at the inside of a liner or cylinder for preventing the deposit of carbon oil particles, e.g. oil scrapers
}
F02F 2001/008
.
{
Stress problems, especially related to thermal stress
}
Collapse
.
having cooling means( cylinder heads F02F 1/26 )
Collapse
. .
for air cooling
F02F 1/045
. . .
{
Attachment of cylinders to crankcase
}
Collapse
F02F 1/06
. . .
Shape or arrangement of cooling fins ; Finned cylinders
F02F 1/065
. . . .
{
with means for directing or distributing cooling medium
}
. . . .
running-liner and cooling-part of cylinder being different parts or of different material
Collapse
. .
for liquid cooling
. . .
{
Attachment of cylinders to crankcase
}
F02F 2001/104
. . .
{
using an open deck, i.e. the water jacket is open at the block top face
}
F02F 2001/106
. . .
{
using a closed deck, i.e. the water jacket is not open at the block top face
}
. . .
{
Siamese-type cylinders, i.e. cylinders cast together
}
. . .
Preventing corrosion of liquid-swept surfaces
F02F 1/14
. . .
Cylinders with means for directing, guiding or distributing liquid stream
Collapse
F02F 1/16
. . .
Cylinder liners of wet type
F02F 1/163
. . . .
{
the liner being midsupported
}
F02F 1/166
. . . .
{
Spacer decks
}
Collapse
F02F 1/18
.
Other cylinders
F02F 1/183
. .
{
Oval or square cylinders
}
F02F 1/186
. .
{
for use in engines with two or more pistons reciprocating within same cylinder( such engines per se F02B 75/28 )
}
F02F 1/20
. .
characterised by constructional features providing for lubrication
F02F 1/22
. .
characterised by having ports in cylinder wall for scavenging or charging
Collapse
F02F 1/24
.
Cylinder heads
F02F 2001/241
. .
{
specially adapted to pent roof shape of the combustion chamber
}
F02F 1/242
. .
{
Arrangement of spark plugs or injectors
}
F02F 1/243
. .
{
Cylinder heads and inlet or exhaust manifolds integrally cast together
}
Collapse
F02F 2001/244
. .
{
Arrangement of valve stems in cylinder heads
}
Collapse
F02F 2001/245
. . .
{
the valve stems being orientated at an angle with the cylinder axis
}
F02F 2001/246
. . . .
{
and orientated radially from the combustion chamber surface
}
F02F 2001/247
. . .
{
the valve stems being orientated in parallel with the cylinder axis
}
F02F 2001/248
. .
{
Methods for avoiding thermal stress-induced cracks in the zone between valve seat openings
}
F02F 2001/249
. .
{
with flame plate, e.g. insert in the cylinder head used as a thermal insulation between cylinder head and combustion chamber
}
Collapse
F02F 1/26
. .
having cooling means
Collapse
F02F 1/28
. . .
for air cooling
Collapse
F02F 1/30
. . . .
Finned cylinder heads
F02F 1/305
. . . . .
{
the cylinder heads being of side valve type
}
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 )
Collapse
F02F 1/36
. . .
for liquid cooling
F02F 1/365
. . . .
{
the cylinder heads being of side valve type
}
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 )
Collapse
F02F 1/42
. .
Shape or arrangement of intake or exhaust channels in cylinder heads
F02F 2001/4207
. . .
{
Arrangements with one conduit connected with two valves; Arrangements connecting one valve with two conduits
}
Collapse
F02F 1/4214
. . .
{
specially adapted for four or more valves per cylinder
}
F02F 1/4221
. . . .
{
particularly for three or more inlet valves( mechanisms for driving such valves F01L 1/265 )
}
F02F 1/4228
. . .
{
Helically-shaped channels
}
( F02B 31/00 takes precedence )]
Collapse
F02F 1/4235
. . .
{
of intake channels
}
F02F 1/4242
. . . .
{
with a partition wall inside the channel
}
. . . .
{
with a separate deviation element inside the channel
}
F02F 1/4257
. . . .
{
with an intake liner
}
Collapse
F02F 1/4264
. . .
{
of exhaust channels
}
F02F 1/4271
. . . .
{
with an exhaust liner
}
F02F 2001/4278
. . . .
{
Exhaust collectors
}
Collapse
F02F 1/4285
. . .
{
of both intake and exhaust channel
}
. . . .
{
with liners( F02F 1/4257 , F02F 1/4271 take precedence )
}
Collapse
Pistons( in general F16J )
F02F 2003/0007
.
{
Monolithic pistons; One piece constructions; Casting of pistons
}
Collapse
F02F 3/0015
.
{
Multi-part pistons
}
F02F 3/0023
. .
{
the parts being bolted or screwed together
}
Collapse
F02F 3/003
. .
{
the parts being connected by casting, brazing, welding or clamping
}
F02F 2003/0038
. . .
{
by brazing
}
F02F 2003/0046
. . .
{
by crimping
}
F02F 2003/0053
. . .
{
by soldering
}
F02F 2003/0061
. . .
{
by welding
}
F02F 3/0069
. .
{
the crown and skirt being interconnected by the gudgeon pin
}
F02F 3/0076
.
{
the inside of the pistons being provided with ribs or fins
}
Collapse
F02F 3/0084
.
{
the pistons being constructed from specific materials
}
F02F 3/0092
. .
{
the material being steel-plate
}
Collapse
F02F 3/02
.
having means for accomodating or controlling heat expansion
F02F 3/022
. .
{
the pistons having an oval circumference or non-cylindrical shaped skirts, e.g. oval( F02F 3/025 , F02F 3/027 take precedence )
}
F02F 3/025
. .
{
having circumferentially slotted piston skirts, e.g. T-slots
}
F02F 3/027
. .
{
the skirt wall having cavities
}
Collapse
F02F 3/04
. .
having expansion-controlling inserts
F02F 3/042
. . .
{
the inserts consisting of reinforcements in the skirt interconnecting separate wall parts, e.g. rods or strips
}
F02F 3/045
. . .
{
the inserts being located in the crown
}
F02F 3/047
. . .
{
the inserts being located around the gudgeon pin bearings
}
F02F 3/06
. . .
the inserts having bimetallic effect
F02F 3/08
. . .
the inserts being ring-shaped
Collapse
F02F 3/10
.
having surface coverings( F02F 3/02 takes precedence )
F02F 3/105
. .
{
the coverings forming a double skirt
}
Collapse
F02F 3/12
. .
on piston heads
F02F 3/14
. . .
within combustion chambers
Collapse
.
having cooling means
F02F 3/18
. .
the means being a liquid or solid coolant, e.g. sodium, in a closed chamber in piston
Collapse
F02F 3/20
. .
the means being a fluid flowing through or along piston
Collapse
. . .
the fluid being liquid
F02F 3/225
. . . .
{
the liquid being directed into blind holes
}
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 )
Collapse
F02F 3/28
.
Other pistons with specially-shaped head
F02F 3/285
. .
{
the head being provided with an insert located in or on the combustion-gas-swept surface
}
Piston rings, e.g. associated with piston crown
{
not used see F16J 9/00
}
Collapse
Casings, e.g. crankcases( engine casings in general F16M )
{
or frames
}
Collapse
F02F 7/0002
.
{
Cylinder arrangements
}
F02F 7/0004
. .
{
Crankcases of one-cylinder engines
}
F02F 7/0007
. .
{
Crankcases of engines with cylinders in line
}
F02F 7/0009
. .
{
Crankcases of opposed piston engines
}
F02F 7/0012
. .
{
Crankcases of V-engines
}
F02F 7/0014
. .
{
Crankcases of W-, deldic, or quadratic engines, or the like
}
F02F 7/0017
. .
{
Crankcases of radial engines
}
F02F 7/0019
. .
{
Cylinders and crankshaft not in one plane (deaxation)
}
Collapse
F02F 7/0021
.
{
Construction
}
Collapse
F02F 7/0024
. .
{
Casings for larger engines
}
F02F 7/0026
. . .
{
Casings for horizontal engines
}
F02F 7/0029
. .
{
Space-frames
}
F02F 7/0031
. .
{
Construction kit principle( modular engines )
}
F02F 7/0034
. .
{
Built from sheet material and welded casings
}
F02F 7/0036
. .
{
Casings for two-stroke engines with scavenging conduits
}
F02F 7/0039
. .
{
Casings for small engines, especially with crankcase pumps
}
F02F 2007/0041
. .
{
Fixing Bolts
}
Collapse
F02F 7/0043
.
{
Arrangements of mechanical drive elements
}
F02F 7/0046
. .
{
Shape of casings adapted to facilitate fitting or dismantling of engine parts
}
F02F 7/0048
. .
{
Tunnel-type frames
}
F02F 7/0051
. .
{
Crankcase pump engines
}
Collapse
F02F 7/0053
. .
{
Crankshaft bearings fitted in the crankcase
}
F02F 2007/0056
. . .
{
using bearing beams, i.e. bearings interconnected by a beam or multiple beams
}
F02F 7/0058
. .
{
Longitudially or tranversely separable crankcases
}
Collapse
F02F 7/006
.
{
Camshaft or pushrod housings( oil sumps F01M 11/0004 )
}
F02F 2007/0063
. .
{
Head bolts; Arrangements of cylinder head bolts
}
Collapse
F02F 7/0065
.
{
Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
}
F02F 7/0068
. .
{
Adaptations for other accessories
}
F02F 7/007
. .
{
Adaptations for cooling
}
Collapse
F02F 7/0073
. .
{
Adaptations for fitting the engine, e.g. front-plates or bell-housings
}
F02F 2007/0075
. . .
{
Front covers
}
F02F 2007/0078
. . .
{
Covers for belt transmissions
}
F02F 7/008
. .
{
Sound insulation( see also F02B 77/13 )
}
F02F 7/0082
.
{
Mounting of engine casings
}
Collapse
F02F 7/0085
.
{
Materials for constructing engines or their parts
}
F02F 7/0087
. .
{
Ceramic materials
}
F02F 2007/009
. .
{
Hypereutectic aluminum, e.g. aluminum alloys with high SI content
}
F02F 2007/0092
. .
{
Transparent materials
}
F02F 7/0095
.
{
Constructing engine casings( welded casings F02F 7/0034 )
}
F02F 2007/0097
.
{
for large diesel engines
}
Collapse
Arrangements of sealings in combustion engines( piston rings F02F 5/00
{
not used, see F16J 9/00
}
; sealings per se F16J )
F02F 11/002
.
{
involving cylinder heads
}
F02F 11/005
.
{
involving cylinder liners
}
F02F 11/007
.
{
involving rotary applications
}
Collapse
F02F 2200/00
Manufacturing
F02F 2200/02
.
Riveting
F02F 2200/04
.
Forging of engine parts
Collapse
F02F 2200/06
.
Casting( casting of pistons F02F 2003/0007 )
F02F 2200/08
. .
using a lost model, e.g. foam casting
F02F 2200/11
.
using wrought materials, e.g. wrought steels
F02F 2547/00
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013