F16J

PISTONS

specially adapted for dampers F16F9/32

CYLINDERS

SEALINGS

Attention is drawn to the following places:

A47J27/08

Pressure cookers

E04B1/68

Sealing building joints

E05C9/00

Multi-point fastening of wings in general

F01B

Machines or engines in general or of reciprocating type, e.g. cylinders peculiar to steam engines

F01B31/28

F02F1/00

Cylinders for combustion engines

F02F3/00

Pistons for combustion engines

F04D29/08

Sealings of non-positive displacement pumps

F17B1/04

Sealing devices for sliding parts of gas holders of variable capacity

F28F9/04

Arrangements for sealing elements into header boxes or end plates of heat-exchangers.

The following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups:

F16J15/53

covered by

F16J15/43

In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.

F16J1/00

Pistons

Trunk pistons

Plungers bellows pistons F16J3/06; piston-rings or seats therefor F16J9/00;

manufacture of pistons B23P15/10

; 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 F16K33/00

F16J1/001

One-piece pistons

F16J1/003

with integral sealing lips

F16J1/005

obtained by assembling several pieces

F16J1/006

of different materials

F16J1/008

with sealing lips

F16J1/01

characterised by the use of particular materials F16J1/02 takes precedence

F16J1/02

Bearing surfaces

F16J1/04

Resilient guiding parts, e.g. skirts, particularly for trunk pistons

F16J1/06

with separate expansion members

Expansion members

F16J1/08

Constructional features providing for lubrication

F16J1/09

with means for guiding fluids F16J1/08 takes precedence

F16J1/10

Connection to driving members

F16J1/12

with piston-rods, e.g. rigid connections

F16J1/14

with connecting-rods, i.e. pivotal connections

F16J1/16

with gudgeon-pin

Gudgeon-pins

F16J1/18

Securing of gudgeon-pins

F16J1/20

with rolling contact, other than in ball or roller bearings

F16J1/22

with universal joint, e.g. ball-joint

F16J1/24

designed to give the piston some rotary movement about its axis

F16J3/00

Diaphragms

Bellows

Bellows pistons connection of valves to inflatable elastic bodies B60C29/00; bellows or the like used in instruments G12B1/04; diaphragms for electromechanical transducers H04R7/00

F16J3/02

Diaphragms

F16J3/04

Bellows

F16J3/041

Non-metallic bellows

F16J3/042

Fastening details

F16J3/043

with particular means for limiting wear

F16J3/045

Split bellows

F16J3/046

Lubrication or venting arrangements

F16J3/047

Metallic bellows

F16J3/048

with guiding or supporting means

F16J3/06

Bellows pistons

F16J7/00

Piston-rods

F16J9/00

Piston-rings

, e.g. non-metallic piston-rings

, seats therefor

Ring sealings of similar construction other sealings between pistons and cylinders F16J3/06, F16J15/16

; manufacture of piston-rings B23P15/06, B23P15/08

; tools for mounting or removing piston-rings or the like B25B; piston sealing arrangements on brake master cylinders B60T11/236

; sealing provided on pump pistons F04B53/143

F16J9/02

L-section rings

F16J9/04

Helical rings

F16J9/06

using separate springs

or elastic elements

expanding the rings

Springs therefor

; Expansion by wedging

F16J9/061

using metallic coiled or blade springs F16J9/145 takes precedence

F16J9/062

Coiled spring along the entire circumference

F16J9/063

Strip or wire along the entire circumference

F16J9/064

Rings with a flat annular side rail

F16J9/065

Spring expander with massive cross-section

F16J9/066

Spring expander from sheet metal

F16J9/067

corrugated in the radial direction

F16J9/068

corrugated in the axial direction

F16J9/069

with a "C"-shaped cross section along the entire circumference

F16J9/08

with expansion obtained by pressure of the medium

F16J9/10

Special members for adjusting the rings

F16J9/12

Details

F16J9/14

Joint-closures

F16J9/145

of spring expanders

F16J9/16

obtained by stacking of rings

F16J9/18

with separate bridge-elements

F16J9/20

Rings with special cross-section L-section rings F16J9/02

Oil-scraping rings

F16J9/06 takes precedence

F16J9/203

Oil-scraping rings

The group F16J9/203 is no longer used for the classification of new documents from August 1st, 2002. The backlog of this group is being continuously reclassified to F16J9/206, and to F16J9/06 and sub-groups

F16J9/206

One-piece oil-scraping rings

F16J9/22

Rings for preventing wear of grooves or like seatings

F16J9/24

Members preventing rotation of rings in grooves

F16J9/26

characterised by the use of particular materials

F16J9/28

of non-metals

F16J10/00

Engine or like cylinders pressure vessels in general F16J12/00; 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

F16J10/02

Cylinders designed to receive moving pistons or plungers

F16J10/04

Running faces

Liners

F16J12/00

Pressure vessels in general covers therefor F16J13/00; for particular applications, see the relevant subclasses, e.g. B01J, F17C, G21C

F16J13/00

Covers or similar closure members for pressure vessels in general for engines or like cylinders F16J10/00; sealings F16J15/02; covers for box-like containers B65D43/00; devices for securing or retaining closure members B65D45/00; closures for containers not otherwise provided for B65D51/00; manholes, covers for large containers B65D90/10; gates or closures for large containers B65D90/54; for vessels for containing or storing compressed, liquefied or solidified gases F17C13/06; steam boilers F22B

F16J13/02

Detachable closure members

Means for tightening closures F16J13/16, F16J13/22 take precedence

F16J13/04

attached with a bridge member

F16J13/06

attached only by clamps along the circumference

F16J13/065

the clamp comprising a ring encircling the flange

F16J13/08

attached by one or more members actuated to project behind a part or parts of the frame similar constructions for doors or windows E05C9/00

F16J13/10

attached by means of a divided ring

F16J13/12

attached by wedging action by means of screw-thread, interrupted screw-thread, bayonet closure, or the like

F16J13/14

attached exclusively by spring action or elastic action

F16J13/16

Pivoted closures F16J13/22 takes precedence

F16J13/18

pivoted directly on the frame

F16J13/20

mounted by mobile fastening on swinging arms

F16J13/22

with movement parallel to the plane of the opening

F16J13/24

with safety devices, e.g. to prevent opening prior to pressure release

F16J15/00

Sealings

F16J15/002

comprising at least two sealings in succession F16J15/162, F16J15/40 take precedence

F16J15/004

forming of recuperation chamber for the leaking fluid

F16J15/006

with division of the pressure F16J15/44 takes precedence

F16J15/008

with provision to put out of action at least one sealing; One sealing sealing only on standstill; Emergency or servicing sealings F16J15/164 takes precedence

F16J15/02

between relatively-stationary surfaces F16J15/46, F16J15/48 take precedence

F16J15/021

with elastic packing F16J15/08 takes precedence

F16J15/022

characterised by structure or material

F16J15/024

the packing being locally weakened in order to increase elasticity

F16J15/025

and with at least one flexible lip

F16J15/027

and with a hollow profile

F16J15/028

the packing being mechanically expanded against the sealing surface

F16J15/04

without packing between the surfaces, e.g. with ground surfaces, with cutting edge

F16J15/06

with solid packing compressed between sealing surfaces

F16J15/061

with positioning means F16J15/0831 takes precedence

F16J15/062

characterised by the geometry of the seat

F16J15/064

the packing combining the sealing function with other functions

F16J15/065

fire resistant

F16J15/067

Split packings

F16J15/068

the packing swelling under working conditions

F16J15/08

with exclusively metal packing

F16J15/0806

characterised by material or surface treatment

F16J15/0812

with a braided or knitted body

F16J15/0818

Flat gaskets

F16J15/0825

laminated

F16J15/0831

with mounting aids

F16J2015/0837

with an edge portion folded over a second plate or shim

F16J2015/0843

with an edge portion folded over the plate itself

F16J2015/085

without fold over

F16J2015/0856

with a non-metallic coating or strip

F16J2015/0862

with a bore ring

F16J2015/0868

Aspects not related to the edges of the gasket

F16J2015/0875

comprising welds

F16J15/0881

the sealing effect being obtained by plastic deformation of the packing

F16J15/0887

the sealing effect being obtained by elastic deformation of the packing

F16J15/0893

the packing having a hollow profile

F16J15/10

with non-metallic packing

F16J15/102

characterised by material

F16J15/104

characterised by structure

F16J15/106

homogeneous

F16J15/108

Special methods for making a non-metallic packing

F16J15/12

with metal reinforcement or covering

F16J15/121

with metal reinforcement

F16J15/122

generally parallel to the surfaces

F16J15/123

Details relating to the edges of the packing

F16J15/125

generally perpendicular to the surfaces

F16J15/126

consisting of additions, e.g. metallic fibres, metallic powders, randomly dispersed in the packing

F16J15/127

the reinforcement being a compression stopper

F16J15/128

with metal covering

F16J15/14

by means of granular or plastic material, or fluid

F16J15/16

between relatively-moving surfaces F16J15/50, F16J15/52 take precedence; bellows pistons F16J3/06; piston-rings or ring sealings of similar construction F16J9/00

F16J15/162

Special parts or details relating to lubrication or cooling of the sealing itself F16J15/324, F16J15/3404, F16J15/40 take precedence

F16J15/164

the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid

F16J15/166

with means to prevent the extrusion of the packing

F16J15/168

which permits material to be continuously conveyed

F16J15/18

with stuffing-boxes for elastic or plastic packings

F16J15/181

for plastic packings

F16J15/182

with lubricating, cooling or draining means

F16J15/183

using a lantern ring

F16J15/184

Tightening mechanisms

F16J15/185

with continuous adjustment of the compression of the packing

F16J15/186

using springs

F16J15/187

Self-aligning stuffing-boxes

F16J15/188

Split assemblies

F16J15/189

Means for facilitating the removal of the packing

F16J15/20

Packing materials therefor

F16J15/22

shaped as strands, ropes, threads, ribbons, or the like

F16J15/24

with radially or tangentially compressed packing

F16J15/26

with stuffing-boxes for rigid sealing rings

F16J15/28

with sealing rings made of metal

F16J15/30

with sealing rings made of carbon

F16J15/32

with elastic sealings, e.g. O-rings

F16J15/3204

with at least one lip

F16J15/3208

provided with tension elements, e.g. elastic rings

F16J15/3212

with metal springs

F16J15/3216

supported in a direction parallel to the surfaces

F16J15/322

supported in a direction perpendicular to the surfaces

F16J15/3224

capable of accommodating changes in distances or misalignment between the surfaces, e.g. able to compensate for defaults of eccentricity or angular deviations

F16J15/3228

formed by deforming a flat ring

F16J15/3232

having two or more lips

F16J15/3236

with at least one lip for each surface, e.g. U-cup packings

F16J15/324

Arrangements for lubrication or cooling of the sealing itself

F16J15/3244

with hydrodynamic pumping action

F16J15/3248

provided with casings or supports

F16J15/3252

with rigid casings or supports

F16J15/3256

comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals

F16J15/326

with means for detecting or measuring relative rotation of the two elements

F16J15/3264

the elements being separable from each other

F16J15/3268

Mounting of sealing rings

F16J15/3272

the rings having a break or opening, e.g. to enable mounting on a shaft otherwise than from a shaft end

F16J15/3276

with additional static sealing between the sealing, or its casing or support, and the surface on which it is mounted

F16J15/328

Manufacturing methods specially adapted for elastic sealings moulding B29C

F16J15/3284

characterised by their structure

Selection of materials

F16J15/3288

Filamentary structures, e.g. brush seals

F16J15/3292

Lamellar structures

F16J15/3296

Arrangements for monitoring the condition or operation of elastic sealings F16J15/326 takes precedence

Arrangements for control of elastic sealings, e.g. of their geometry or stiffness

F16J15/34

with slip-ring pressed against a more or less radial face on one member

F16J15/3404

and characterised by parts or details relating to lubrication, cooling or venting of the seal

F16J15/3408

at least one ring having an uneven slipping surface

F16J15/3412

with cavities F16J15/3424 takes precedence

F16J15/3416

with at least one continuous groove

F16J15/342

with means for feeding fluid directly to the face

F16J15/3424

with microcavities

F16J15/3428

with a wavy surface

F16J15/3432

the geometry of the surface being able to vary during operation

F16J15/3436

Pressing means

F16J15/344

the pressing force being applied by means of an elastic ring supporting the slip-ring

F16J15/3444

by magnetic attraction

F16J15/3448

the pressing force resulting from fluid pressure

F16J15/3452

the pressing force resulting from the action of a spring

F16J15/3456

without external means for pressing the ring against the face, e.g. slip-ring with a resilient lip

F16J15/346

the pressing force varying during operation

F16J15/3464

Mounting of the seal

F16J15/3468

Means for controlling the deformations of the contacting faces

F16J15/3472

Means for centering or aligning the contacting faces

F16J15/3476

Means for minimising vibrations of the slip-ring

F16J15/348

Pre-assembled seals, e.g. cartridge seals

F16J15/3484

Tandem seals

F16J15/3488

Split-rings

F16J15/3492

with monitoring or measuring means associated with the seal

F16J15/3496

use of special materials

F16J15/36

connected by a diaphragm

or bellow

to the other member

F16J15/363

the diaphragm or bellow being made of metal

F16J15/366

and comprising vibration-damping means

F16J15/38

sealed by a packing

F16J15/40

by means of fluid

F16J15/403

by changing the state of matter

F16J15/406

by at least one pump

F16J15/42

kept in sealing position by centrifugal force

F16J15/43

kept in sealing position by magnetic force

F16J15/44

Free-space packings

F16J15/441

with floating ring

F16J15/442

segmented

F16J15/443

provided with discharge channels

F16J15/444

with facing materials having honeycomb-like structure

F16J15/445

with means for adjusting the clearance

F16J15/447

Labyrinth packings

F16J15/4472

with axial path

F16J15/4474

Pre-assembled packings

F16J15/4476

with radial path

F16J15/4478

Pre-assembled packings

F16J15/453

characterised by the use of particular materials

F16J15/444 takes precedence

F16J15/46

with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings connection of valves to inflatable elastic bodies B60C29/00;

for sealing arrangements in vehicles B60J10/244; for sealing arrangements of openings in buildings E06B7/2318

; for tube connections F16L

F16J15/48

influenced by the pressure within the member to be sealed

F16J15/50

between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall

F16J15/52

by means of sealing bellows or diaphragms connection of valves to inflatable elastic bodies B60C29/00

F16J15/525

fixed to a part of a transmission performing a wobbling or a circular translatory movement

F16J15/54

Other sealings for rotating shafts

F16J15/545

submitted to unbalanced pressure in circumference; seals for oscillating actuator

F16J15/56

Other sealings for reciprocating rods