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CPC
COOPERATIVE PATENT CLASSIFICATION
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F16J
PISTONS
{
(specially adapted for dampers F16F 9/32)
}
; CYLINDERS; SEALINGS
NOTE
-
Attention is drawn to the following places:

A47J 27/08 Pressure cookers
E04B 1/68 Sealing building joints
E05C 9/00 Multi-point fastening of wings in general
F01B Machines or engines in general or of reciprocating
type, e.g. cylinders peculiar to steam engines
F01B 31/28
F02F 1/00 Cylinders for combustion engines
F02F 3/00 Pistons for combustion engines
F04D 29/08 Sealings of non-positive displacement pumps
F17B 1/04 Sealing devices for sliding parts of gas holders
of variable capacity
F28F 9/04 Arrangements for sealing elements into header
boxes or end plates of heat-exchangers.

WARNING
-
The following IPC groups are not used in the CPC scheme. Subject matter covered by these groups is classified in the following CPC groups:

F16J15/53 covered by F16J 15/43

Collapse
F16J 1/00
Pistons; Trunk pistons; Plungers (bellows pistons F16J 3/06; piston-rings or seats therefor F16J 9/00;
{
manufacture of pistons B23P 15/10
}
; rotary pistons, e.g. for "Wankel" type engines F01C; specific for combustion engines, i.e. constructed to withstand high temperature or modified for guiding, igniting, vaporising or otherwise treating the charge F02F;
{
pistons for hydraulic engines F03C
}
; pumps F04B; floats F16K 33/00)
Collapse
F16J 1/001
.
{
One-piece pistons
}
F16J 1/003
. .
{
with integral sealing lips
}
Collapse
F16J 1/005
.
{
obtained by assembling several pieces
}
Collapse
F16J 1/006
. .
{
of different materials
}
F16J 1/008
. . .
{
with sealing lips
}
F16J 1/01
.
characterised by the use of particular materials (F16J 1/02 takes precedence)
F16J 1/02
.
Bearing surfaces
Collapse
F16J 1/04
.
Resilient guiding parts, e.g. skirts, particularly for trunk pistons
F16J 1/06
. .
with separate expansion members; Expansion members
F16J 1/08
.
Constructional features providing for lubrication
F16J 1/09
.
with means for guiding fluids (F16J 1/08 takes precedence)
Collapse
F16J 1/10
.
Connection to driving members
F16J 1/12
. .
with piston-rods, e.g. rigid connections
Collapse
F16J 1/14
. .
with connecting-rods, i.e. pivotal connections
Collapse
F16J 1/16
. . .
with gudgeon-pin; Gudgeon-pins
F16J 1/18
. . . .
Securing of gudgeon-pins
F16J 1/20
. . .
with rolling contact, other than in ball or roller bearings
F16J 1/22
. . .
with universal joint, e.g. ball-joint
F16J 1/24
. .
designed to give the piston some rotary movement about its axis
Collapse
F16J 3/00
Diaphragms; Bellows; Bellows pistons (connection of valves to inflatable elastic bodies B60C 29/00; bellows or the like used in instruments G12B 1/04; diaphragms for electromechanical transducers H04R 7/00)
F16J 3/02
.
Diaphragms
Collapse
F16J 3/04
.
Bellows
Collapse
F16J 3/041
. .
{
Non-metallic bellows
}
F16J 3/042
. . .
{
Fastening details
}
F16J 3/043
. . .
{
with particular means for limiting wear
}
F16J 3/045
. . .
{
Split bellows
}
F16J 3/046
. . .
{
Lubrication or venting arrangements
}
F16J 3/047
. .
{
Metallic bellows
}
F16J 3/048
. .
[with guiding or supporting means]
F16J 3/06
.
Bellows pistons
F16J 7/00
Piston-rods
Collapse
F16J 9/00
Piston-rings,
{
e.g. non-metallic piston-rings
}
, seats therefor; Ring sealings of similar construction in general (other sealings between pistons and cylinders F16J 3/06, F16J 15/16;
{
manufacture of piston-rings B23P 15/06, B23P 15/08
}
; tools for mounting or removing piston-rings or the like B25B; piston sealing arrangements on brake master cylinders B60T 11/236;
{
sealing provided on pump pistons F04B 53/143
}
)
F16J 9/02
.
L-section rings
F16J 9/04
.
Helical rings
Collapse
F16J 9/06
.
using separate springs
{
or elastic elements
}
 expanding the rings; Springs therefor;
{
Expansion by wedging
}
Collapse
F16J 9/061
. .
{
using metallic coiled or blade springs (F16J 9/145 takes precedence)
}
F16J 9/062
. . .
{
Coiled spring along the entire circonference
}
F16J 9/063
. . .
{
Strip or wire along the entire circonference
}
Collapse
F16J 9/064
. .
{
Rings with a flat annular side rail
}
F16J 9/065
. . .
{
Spring expander with massive cross-section
}
Collapse
F16J 9/066
. . .
{
Spring expander from sheet metal
}
F16J 9/067
. . . .
{
corrugated in the radial direction
}
F16J 9/068
. . . .
{
corrugated in the axial direction
}
F16J 9/069
. . . .
{
with a "C"-shaped cross section along the entire circumference
}
F16J 9/08
.
with expansion obtained by pressure of the medium
F16J 9/10
.
Special members for adjusting the rings
Collapse
F16J 9/12
.
Details
Collapse
F16J 9/14
. .
Joint-closures
F16J 9/145
. . .
{
of spring expanders
}
F16J 9/16
. . .
obtained by stacking of rings
F16J 9/18
. . .
with separate bridge-elements
Collapse
F16J 9/20
. .
Rings with special cross-section (L-section rings F16J 9/02); Oil-scraping rings
{
(F16J 9/06 takes precedence)
}
F16J 9/203
. . .
{
Oil-scraping rings
}
WARNING
-
The group F16J 9/203 is no longer used for the classification of new documents from August 1st, 2002. The backlog of this group is being continuously reclassified to F16J 9/206, and to F16J 9/06 and sub-groups

F16J 9/206
. . .
{
One-piece oil-scraping rings
}
F16J 9/22
. .
Rings for preventing wear of grooves or like seatings
F16J 9/24
. .
Members preventing rotation of rings in grooves
F16J 9/26
.
characterised by the use of particular materials
F16J 9/28
.
of non-metals
Collapse
F16J 10/00
Engine or like cylinders (pressure vessels in general F16J 12/00; cylinders for engines or other apparatus of particular kinds, see the appropriate subclasses, e.g. for combustion engines F02F); Features of hollow, e.g. cylindrical, bodies in general
Collapse
F16J 10/02
.
Cylinders designed to receive moving pistons or plungers
F16J 10/04
. .
Running faces; Liners
F16J 12/00
Pressure vessels in general (covers therefor F16J 13/00; for particular applications, see the relevant subclasses, e.g. B01J, F17C, G21C)
Collapse
F16J 13/00
Covers or similar closure members for pressure vessels in general (for engines or like cylinders F16J 10/00; sealings F16J 15/02; covers for box-like containers B65D 43/00; devices for securing or retaining closure members B65D 45/00; closures for containers not otherwise provided for B65D 51/00; manholes, covers for large containers B65D 90/10; gates or closures for large containers B65D 90/54; for vessels for containing or storing compressed, liquefied or solidified gases F17C 13/06; steam boilers F22B)
Collapse
F16J 13/02
.
Detachable closure members; Means for tightening closures (F16J 13/16, F16J 13/22 take precedence)
F16J 13/04
. .
attached with a bridge member
Collapse
F16J 13/06
. .
attached only by clamps along the circumference
F16J 13/065
. . .
{
the clamp comprising a ring encircling the flange
}
F16J 13/08
. .
attached by one or more members actuated to project behind a part or parts of the frame (similar constructions for doors or windows E05C 9/00)
F16J 13/10
. .
attached by means of a divided ring
F16J 13/12
. .
attached by wedging action by means of screw-thread, interrupted screw-thread, bayonet closure, or the like
F16J 13/14
. .
attached exclusively by spring action or elastic action
Collapse
F16J 13/16
.
Pivoted closures (F16J 13/22 takes precedence)
F16J 13/18
. .
pivoted directly on the frame
F16J 13/20
. .
mounted by mobile fastening on swinging arms
F16J 13/22
.
with movement parallel to the plane of the opening
F16J 13/24
.
with safety devices, e.g. to prevent opening prior to pressure release
Collapse
F16J 15/00
Sealings (sealing arrangements for vehicle windows, windscreens, non-fixed roofs, doors, or similar devices B60J 10/00; sealing or packing elements for container closures B65D 53/00; sealing arrangements in rotary-piston machines or engines F01C 19/00; sealings in non-positive-displacement machines or engines F01D 11/00; arrangements of sealings in combustion engines F02F 11/00; sealing arrangements in rotary-piston pumps F04C 27/00; sealing lead-in or lead-through insulators H01B 17/30)
Collapse
F16J 15/002
.
{
comprising at least two sealings in succession (F16J 15/162, F16J 15/40 take precedence)
}
F16J 15/004
. .
{
forming or recuperation chamber for the leaking fluid
}
F16J 15/006
. .
{
with division of the pressure (F16J 15/44 takes precedence)
}
F16J 15/008
. .
{
with provision to put out of action at least one sealing; One sealing sealing only on standstill; Emergency or servicing sealings (F16J 15/164 takes precedence)
}
Collapse
F16J 15/02
.
between relatively-stationary surfaces (F16J 15/46, F16J 15/48 take precedence)
Collapse
F16J 15/021
. .
{
with elastic packing (F16J 15/08 takes precedence)
}
Collapse
F16J 15/022
. . .
{
characterised by structure or material
}
Collapse
F16J 15/024
. . . .
{
the packing being locally weakened in order to increase elasticity
}
F16J 15/025
. . . . .
{
and with at least one flexible lip
}
F16J 15/027
. . . . .
{
and with a hollow profile
}
F16J 15/028
. . .
{
the packing being mechanically expanded against the sealing surface
}
F16J 15/04
. .
without packing between the surfaces, e.g. with ground surfaces, with cutting edge
Collapse
F16J 15/06
. .
with solid packing compressed between sealing surfaces
F16J 15/061
. . .
{
with positioning means (F16J 15/0831 takes precedence)
}
F16J 15/062
. . .
{
characterised by the geometry of the seat
}
Collapse
F16J 15/064
. . .
{
the packing combining the sealing function with other functions
}
F16J 15/065
. . . .
{
fire resistant
}
F16J 15/067
. . .
{
Split packings
}
F16J 15/068
. . .
{
the packing swelling under working conditions
}
Collapse
F16J 15/08
. . .
with exclusively metal packing
Collapse
F16J 15/0806
. . . .
{
characterised by material or surface treatment
}
F16J 15/0812
. . . . .
{
with a braided or knitted body
}
Collapse
F16J 15/0818
. . . .
{
Flat gaskets
}
Collapse
F16J 15/0825
. . . . .
{
laminated
}
F16J 15/0831
. . . . . .
{
with mounting aids
}
F16J 15/0881
. . . .
{
the sealing effect being obtained by plastic deformation of the packing
}
Collapse
F16J 15/0887
. . . .
{
the sealing effect being obtained by elastic deformation of the packing
}
F16J 15/0893
. . . . .
{
the packing having a hollow profile
}
Collapse
F16J 15/10
. . .
with non-metallic packing
F16J 15/102
. . . .
{
characterised by material
}
Collapse
F16J 15/104
. . . .
{
characterised by structure
}
F16J 15/106
. . . . .
{
homogeneous
}
F16J 15/108
. . . .
{
Special methods for making a non-metallic packing
}
Collapse
F16J 15/12
. . . .
with metal reinforcement or covering
Collapse
F16J 15/121
. . . . .
{
with metal reinforcement
}
Collapse
F16J 15/122
. . . . . .
{
generally parallel to the surfaces
}
F16J 15/123
. . . . . . .
{
Details relating to the edges of the packing
}
F16J 15/125
. . . . . .
{
generally perpendicular to the surfaces
}
F16J 15/126
. . . . . .
{
consisting of additions, e.g. metallic fibres, metallic powders, randomly dispersed in the packing
}
F16J 15/127
. . . . . .
{
the reinforcement being a compression stopper
}
F16J 15/128
. . . . .
{
with metal covering
}
F16J 15/14
. .
by means of granular or plastic material, or fluid
Collapse
F16J 15/16
.
between relatively moving surfaces (F16J 15/50, F16J 15/52 take precedence; bellows pistons F16J 3/06; piston-rings or ring sealing of similar construction in general F16J 9/00; spindle sealings for valves F16K 41/00)
F16J 15/162
. .
{
Special parts or details relating to lubrication or cooling of the sealing itself (F16J 15/324, F16J 15/3404, F16J 15/40 take precedence)
}
F16J 15/164
. .
{
the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid
}
F16J 15/166
. .
{
with means to prevent the extrusion of the packing
}
F16J 15/168
. .
{
which permits material to be continuously conveyed
}
Collapse
F16J 15/18
. .
with stuffing-boxes for elastic or plastic packings
F16J 15/181
. . .
{
for plastic packings
}
Collapse
F16J 15/182
. . .
{
with lubricating, cooling or draining means
}
F16J 15/183
. . . .
{
using a lantern ring
}
Collapse
F16J 15/184
. . .
{
Tightening mechanisms
}
Collapse
F16J 15/185
. . . .
{
with continuous adjustment of the compression of the packing
}
F16J 15/186
. . . . .
{
using springs
}
F16J 15/187
. . .
{
Self-aligning stuffing-boxes
}
F16J 15/188
. . .
{
Split assemblies
}
F16J 15/189
. . .
{
Means for facilitating the removal of the packing
}
Collapse
F16J 15/20
. . .
Packing materials therefor
F16J 15/22
. . . .
shaped as strands, ropes, threads, ribbons, or the like
F16J 15/24
. . .
with radially or tangentially compressed packing
Collapse
F16J 15/26
. .
with stuffing-boxes for rigid sealing rings
F16J 15/28
. . .
with sealing rings made of metal
F16J 15/30
. . .
with sealing rings made of carbon
Collapse
F16J 15/32
. .
with elastic sealing lip
{
with elastic sealing, e.g. "O" ring; F16J 15/34 takes precedence
}
Collapse
F16J 15/3204
. . .
{
with at least one lip
}
Collapse
F16J 15/3208
. . . .
{
provided with a spring-tension element
}
F16J 15/3212
. . . . .
{
with a metal spring
}
F16J 15/3216
. . . .
{
supported in a direction parallel to the surfaces
}
F16J 15/322
. . . .
{
supported in a direction perpendicularly to the surfaces
}
F16J 15/3224
. . . .
{
protected against changes in distances between the surfaces
}
F16J 15/3228
. . . .
{
formed by deforming a flat annular ring
}
Collapse
F16J 15/3232
. . . .
{
with a plurality of lips (F16J 15/3208 to F16J 15/3228 take precedence)
}
F16J 15/3236
. . . . .
{
with at least one lip for each surface, i.e. "U" cup packings
}
F16J 15/324
. . .
{
Details relating to lubrication or cooling of the sealing itself (in general F16J 15/162)
}
F16J 15/3244
. . .
{
with hydro-dynamic pumping action
}
Collapse
F16J 15/3248
. . .
{
provided with a casing
}
Collapse
F16J 15/3252
. . . .
{
with a rigid casing
}
Collapse
F16J 15/3256
. . . . .
{
comprising two elements fixed respectively on each surface
}
F16J 15/326
. . . . . .
{
with means for detecting the relative rotation of the two elements
}
F16J 15/3264
. . . . . .
{
the elements being separable
}
Collapse
F16J 15/3268
. . . .
{
Mounting of sealing lips
}
F16J 15/3272
. . . . .
{
The sealing having a break, e.g. permitting the radial mounting around a shaft
}
F16J 15/3276
. . . .
{
Static sealing round the fixation on one of the surfaces
}
F16J 15/328
. . .
{
Special methods for making elastic sealings (moulding or like operations, see the relevant classes)
}
Collapse
F16J 15/3284
. . .
{
Structural composition; Use of special materials
}
F16J 15/3288
. . . .
{
Filamentary structures, e.g. brush seal
}
F16J 15/3292
. . . .
{
Lamellar structures
}
F16J 15/3296
. . .
{
Measuring or controlling equipment specially adapted for elastic sealings (measuring in general G01; Controlling in general G05)
}
Collapse
F16J 15/34
. .
with slip-ring pressed against a more or less radial face on one member
Collapse
F16J 15/3404
. . .
{
and characterised by parts or details relating to lubrication, cooling or venting of the seal
}
Collapse
F16J 15/3408
. . . .
{
at least one ring having an uneven slipping surface
}
Collapse
F16J 15/3412
. . . . .
{
with cavities (F16J 15/3424 takes precedence)
}
F16J 15/3416
. . . . . .
{
with at least one continuous groove
}
F16J 15/342
. . . . . .
{
with means for feeding fluid directly to the face
}
F16J 15/3424
. . . . .
{
with micro-cavities
}
F16J 15/3428
. . . . .
{
with a wavy surface
}
F16J 15/3432
. . . . .
{
the geometry of the surface being able to vary during operation
}
Collapse
F16J 15/3436
. . .
{
Pressing means
}
F16J 15/344
. . . .
{
the pressing force being applied by means of an elastic ring supporting the slip-ring
}
F16J 15/3444
. . . .
{
by magnetic attraction
}
F16J 15/3448
. . . .
{
the pressing force resulting from fluid pressure
}
F16J 15/3452
. . . .
{
the pressing force resulting from the action of a spring
}
F16J 15/3456
. . . .
{
without external means for pressing the ring against the face, e.g. slip-ring with a resilient lip
}
F16J 15/346
. . . .
{
the pressing force varying during operation
}
Collapse
F16J 15/3464
. . .
{
Mounting of the seal
}
F16J 15/3468
. . . .
{
Means for controlling the deformations of the contacting faces
}
F16J 15/3472
. . . .
{
Means for centering or aligning the contacting faces
}
F16J 15/3476
. . . .
{
Means for minimising vibrations of the slip-ring
}
Collapse
F16J 15/348
. . . .
{
Pre-assembled seals, e.g. cartridge seals
}
F16J 15/3484
. . . . .
{
Tandem seals
}
F16J 15/3488
. . . .
{
Split-rings
}
F16J 15/3492
. . .
{
with monitoring or measuring means associated with the seal
}
F16J 15/3496
. . .
{
use of special materials
}
Collapse
F16J 15/36
. . .
connected by a diaphragm
{
or bellow
}
 to the other member
Collapse
F16J 15/363
. . . .
{
the diaphragm or bellow being made of metal
}
F16J 15/366
. . . . .
{
and comprising vibration-damping means
}
F16J 15/38
. . .
sealed by a packing
Collapse
F16J 15/40
. .
by means of fluid
F16J 15/403
. . .
{
by changing the state of matter
}
F16J 15/406
. . .
{
by at least one pump
}
F16J 15/42
. . .
kept in sealing position by centrifugal force
F16J 15/43
. . .
kept in sealing position by magnetic force
Collapse
F16J 15/44
.
Free-space packings
Collapse
F16J 15/441
. .
{
with floating ring
}
F16J 15/442
. . .
{
segmented
}
F16J 15/443
. .
{
provided with discharge channels
}
F16J 15/444
. .
{
with facing materials having honeycomb-like structure
}
F16J 15/445
. .
{
with means for adjusting the clearance
}
Collapse
F16J 15/447
. .
Labyrinth packings
Collapse
F16J 15/4472
. . .
{
with axial path
}
F16J 15/4474
. . . .
{
Pre-assembled packings
}
Collapse
F16J 15/4476
. . .
{
with radial path
}
F16J 15/4478
. . . .
{
Pre-assembled packings
}
F16J 15/453
. . .
characterised by the use of particular materials
{
(F16J 15/444 takes precedence)
}
Collapse
F16J 15/46
.
with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings (connection of valves to inflatable elastic bodies B60C 29/00;
{
for sealing arrangements in vehicles B60J 10/0037; for sealing arrangements of openings in buildings E06B 7/2318
}
; for tube connections F16L)
F16J 15/48
. .
influenced by the pressure within the member to be sealed
Collapse
F16J 15/50
.
between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall
Collapse
F16J 15/52
. .
by means of sealing bellows or diaphragms (connection of valves to inflatable elastic bodies B60C 29/00)
F16J 15/525
. . .
{
fixed to a part of a transmission performing a wobbling or a circular translatory movement
}
Collapse
F16J 15/54
.
Other sealings for rotating shafts
F16J 15/545
. .
{
submitted to unbalanced pressure in circumference; seals for oscillating actuator
}
F16J 15/56
.
Other sealings for reciprocating rods
Collapse
F16J 2015/00
Sealings (sealing arrangements for vehicle windows, windscreens, non-fixed roofs, doors, or similar devices B60J 10/00; sealing or packing elements for container closures B65D 53/00; sealing arrangements in rotary-piston machines or engines F01C 19/00; sealings in non-positive-displacement machines or engines F01D 11/00; arrangements of sealings in combustion engines F02F 11/00; sealing arrangements in rotary-piston pumps F04C 27/00; sealing lead-in or lead-through insulators H01B 17/30)
Collapse
F16J 2015/02
.
between relatively-stationary surfaces (F16J 15/46, F16J 15/48 take precedence)
Collapse
F16J 2015/06
. .
with solid packing compressed between sealing surfaces
Collapse
F16J 2015/08
. . .
with exclusively metal packing
Collapse
F16J 2015/0818
. . . .
{
Flat gaskets
}
F16J 2015/0837
. . . . .
with an edge portion folded over a second plate or shim
F16J 2015/0843
. . . . .
with an edge portion folded over the plate itself
F16J 2015/085
. . . . .
without fold over
F16J 2015/0856
. . . . .
with a non-metallic coating or strip
F16J 2015/0862
. . . . .
with a bore ring
F16J 2015/0868
. . . . .
Aspects not related to the edges of the gasket
F16J 2015/0875
. . . . .
comprising welds
This page is owned by Office of Patent Classification.
Last Modified: 04/16/2013 4:31:16 PM