CPC Definition - Subclass F16L

Last Updated Version: 2019.08
PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
Definition statement

This place covers:

  • Methods and machines for laying pipes (F16L 1/00)
  • Devices to support, fix or hold pipes (F16L 3/00)
  • Pipes: conduits of closed cross-section which are specially adapted to convey fluids, material or objects (F16L 9/00 and F16L 11/00)
  • Joints between pipes (F16L 13/00 - F16L 41/00, F16L 47/00, F16L 49/00)
  • Energy and noise absorbers associated with pipes (F16L 55/02-F16L 55/055)
  • Means for stopping flow from or in pipes (F16L 55/10-F16L 55/136)
  • Devices for covering leaks in pipes (F16L 55/16-F16L 55/179)
  • Pipe pigs primarily for repairing pipes (F16L 55/26-F16L 55/48)
  • Protection of pipes against wear, heat, cracking, buckling and corrosion (F16L 57/00 and F16L 58/00)
  • Thermal insulation of pipes, or in general, e.g. when no other special application of the insulation is given (F16L 59/00)
  • Tubular bodies that are not used to carry fluid, material or objects, e.g. pipes for scaffoldings, or furniture are only classified in the associated field, e.g. scaffoldings or furniture.
  • If the pipe or connection is adapted for a specific use, it is only classified in the use field (e.g. medical connectors, microconnectors or vacuum cleaners)
  • Documents that concern the specific material or a specific use for thermal insulation are classified in the specific fields for the material or use (e.g. fridges, building panels or motor compartments)

The class is divided in the following main groups

F16L 1/00 Laying of pipes

F16L 3/00 Fixation of pipes

F16L 5/00 Pipes passing through walls

F16L 7/00 Pipe support inside other pipes

F16L 9/00 Rigid pipes

F16L 11/00 Hoses (the product)

F16L 13/00 Non-disconnectable pipe-joints (not made of plastic material)

F16L 15/00 Screw-threaded joints

F16L 17/00 Sealing by fluid pressure

F16L 19/00 Connection of pipes with swivel nuts

F16L 21/00 Male-female couplings

F16L 23/00 Flanged joints

F16L 25/00 Special types of connections for pipes (not in F16L 13/00-F16L 23/00)

F16L 27/00 Adjustable joints (e.g. for allowing movements)

F16L 29/00 Joints with cut-off means

F16L 31/00 Connection of two hoses or two flexible sleeves

F16L 33/00 Connection of hoses to rigid members

F16L 35/00 Safety connections of hoses

F16L 37/00 Quick-acting couplings

F16L 39/00 Multiple/double-walled joints of fittings for pipes or hoses

F16L 41/00 Branching pipes or joining pipes to walls or pipes

F16L 45/00 Pipe units with apertures

F16L 47/00 Connection of plastic pipes; Connectors made of plastic

F16L 49/00 Connection of pipes or to pipes of brittle material

F16L 51/00 Expansion compensation devices (e.g. thermal expansion)

F16L 53/00 Heating/cooling pipes or pipe-systems

F16L 55/00 Energy absorbers, noise absorbers, means for plugging pipes, pigs, repairing pipes etc.

F16L 57/00 Protection of pipes, e.g. against external/internal damage or wear

F16L 58/00 Protection of pipes against corrosion of incrustation (e.g. by coatings)

F16L 59/00 Thermal insulations

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Watering gardens, fields, sports grounds, or the like, e.g. perforated pipe-lines

A01G 25/00

Vacuum cleaners, e.g. corrugated hoses; leaning machines, e.g. hose connections combined with electrical contacts, steam hoses with cables for steam ironing

A47L

Connectors in the medical field, e.g. catheters

A61M

Fire fighting; fire fighting hoses; sprinkler systems

A62C

Micro/macro connectors, e.g. for lab on chip

B01L

Sprayers

B05B

Cleaning of pipes

B08B

Air conditioning ducts in vehicles

B60H

Fuel conduits in vehicles, connections to LPG tank

B60K 15/00

Fixing of hoses or cables in motors vehicles

B60R

Arrangement of piping or air hoses for brake systems

B60T 17/04

Pipe laying ships

B63B

Containers/bags/vessels/tanks Connections to containers in general; Closing straps

B65D

Bends for conveying concrete

B65G

Wear protection for bends for conveying concrete

B65G 53/52

LPG couplings/filling nozzles/ Transferring fluids, e.g. fuel from bulk to vehicles or portable containers

B67D

Dispensing fluids, e.g. filling bottles or cans

B67D 1/00

Fastening of pipes or cables to bridges

E01D 19/00

Couplings for dredgers

E02F 3/3609

Domestic plumbing: shower hoses; toilet installations; drainage; Sewage

E03C, E03D, E02B, E03F

Downpipes for roof drainage, fixing means therefore

E04D

Vertical ducts, channels in buildings, e.g. chimneys

E04F

Fluid concrete transport

E04G

Air ducts for ventilation of mines or tunnels, connections therefore

E21F 1/04

Suspension devices for tubes or the like in mines or tunnels

E21F 17/00

Exhaust pipes

F01N

Air intake in motor engines, e.g. ducts between motor and filter

F02M

Fixing devices, e.g. hollow screws

F16B

Valves

F16K

Conduits, junctions for lubrication systems

F16N 21/00

Connections to gas tanks

F17C

Pipelines/pipe systems

F17D

Water tubes of steam boilers

F22B 37/00

Joints, connection for chimneys or flues

F23J 13/00

Hot water systems, central heating, e.g. distributors for heating built up from modules

F24D

Ducting arrangements for air-conditioning

F24F 13/02

Heat exchangers

F28D

Sealing elements into header boxes or end plates of heat-exchangers

F28F 9/00

Pipes in nuclear reactors

G21C 15/00

Installation of electric cables, e.g. cable or pipe binders, cable or pipe channels

H02G

Special rules of classification
  • Classification is not allocated when the features in the document concerning this subclass are obviously of no technical value, or a mere reference (e.g. if in a document it is mentioned that the connection can be also made by gluing, welding, screwing... without a further relevant technical information)
  • Documents mainly concerning the material of the pipe or hose are classified in main groups F16L 9/00 or F16L 11/00
  • There is a horizontal indexing scheme for further details not related to a specific CPC group:

Uses or applications of pigs or moles F16L 2101/00

Special arrangements for pipe couplings F16L 2201/00

Laying or reclaiming pipes; Repairing or joining pipes on or under water
References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Laying sewer pipes

E03F 3/06

Laying sewer pipes in earth boreholes or wells

E21B

Informative references

Attention is drawn to the following places, which may be of interest for search:

Lining of pipes, replacement of damaged part of a pipe, replacing an existing pipe with a new pipe, wherein the old pipe is being ruptured

F16L 55/16

Soldering or welding

B23K

Pipe laying ships

B63B

Lifting-gear and load-engaging elements

B66

Hydraulic installations, soil drainage

E02B

Excavations or underwater constructions

E02D

Machines for digging trenches in combination with pipe-assembly

E02F

Tunnelling

E21D

Laying electric, or combined optical and electric, cables

H02G

{at a certain height off the ground}
Definition statement

This place covers:

Pipes passing over streets or bodies of water

the pipes being made in situ
Definition statement

This place covers:

Methods of laying pipes wherein the material which forms the pipe later, takes the pipe-shape at the building site, e.g. concrete

References
Limiting references

This place does not cover:

Pipe laying methods wherein the pipe is made by connecting together short pipe pieces

F16L 1/036

Laying or reclaiming pipes on or under water
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Buoyant hoses

F16L 11/133

{Devices for the protection of pipes under water}
Definition statement

This place covers:

protection against fishing, cortex induced vibrations

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Protection of pipes in general

F16L 57/00

vertically
Definition statement

This place covers:

pipes that stay vertically, for example: riser pipes

{the pipe being composed of sections of short length}
Definition statement

This place covers:

e.g.pipe laying methods wherein the pipe segments are joined together on the bottom of the body of water.

Accessories therefor, e.g. floats, weights
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Stingers
Definition statement

This place covers:

media0.jpg

Pipe tensioning apparatus
Definition statement

This place covers:

clamping devices holding the pipe during laying

Apparatus for controlling the pipe during laying
Definition statement

This place covers:

e.g. checking welding seams or coatings just before laying of the pipe

Floats; Weights
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Floats per se

B63B 22/00

Salvaging sunken vessels or underwater object

B63C 7/00

Repairing or joining pipes on or under water
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Buoyant hoses

F16L 11/133

Joints per se

F16L 13/00F16L 49/00

Joining pipes to underwater installations

E21B

Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets (anchors for holding pipes on or under the ground F16L 1/06; {sound-damping supports F16L 55/035; supports for insulated pipes F16L 59/135})
References
Limiting references

This place does not cover:

Anchors for holding pipes on or under the ground

F16L 1/06

Sound-damping supports

F16L 55/035

Supports for insulated pipes

F16L 59/135

Informative references

Attention is drawn to the following places, which may be of interest for search:

Holders for pipes passing through walls or partitions

F16L 5/00

for supporting or guiding the pipes, cables or protective tubing, between relatively movable points, e.g. movable channels
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Hauling- or hoisting-chains with arrangements for holding electric cables, hoses or the like

F16G 13/16

using articulated- or supple-guiding elements
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Cranes with means for transmitting pneumatic, hydraulic or electric power to movable parts or devices

B66C 13/12

and pressing it against a wall or other support
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

{with two members engaging the pipe, cable or tubing, the two members being joined only on one side of the pipe}
Definition statement

This place covers:

e.g. pipe clamps made of two parts, the parts being connected on one side and the opposite side stays open

{with a pair of arms moved automatically to closed position by overcenter spring}
Definition statement

This place covers:

media1.jpg

{the pipe being fixed by rotation of an element}
Definition statement

This place covers:

media2.jpg

and extending along the attachment surface
Definition statement

This place covers:

media3.jpg

the transverse movement being converted to a rotational movement (F16L 3/215 takes precedence)
Definition statement

This place covers:

media39.jpg

References
Limiting references

This place does not cover:

Movement of the pipes being hydraulically or electrically controlled

F16L 3/215

{the axis of each spring being parallel with the direction of the movement of the pipe}
Definition statement

This place covers:

media5.jpg

{having brackets connected together by means of a common support}
Definition statement

This place covers:

Support for supporting a number of parallel pipes at intervals, wherein the brackets and support are originally two different parts

media6.jpg

{having single supports directly connected together}
Definition statement

This place covers:

media7.jpg

each support having one transverse base for supporting the pipes (F16L 3/23, F16L 3/237 take precedence)
Definition statement

This place covers:

one integral support for all pipes

media40.jpg

References
Limiting references

This place does not cover:

Supports for a bundle of pipes or a plurality of pipes placed side by side in contact with each other

F16L 3/23

Supports for two pipes only

F16L 3/237

Devices for use where pipes, cables or protective tubing pass through walls or partitions ({passing insulated pipes through walls F16L 59/121;} arrangements for leading electric cables or lines through walls, floors or ceilings H02G 3/22)
References
Limiting references

This place does not cover:

Passing insulated pipes through walls

F16L 59/121

Arrangements for leading electric cables or lines through walls, floors or ceilings

H02G 3/22

Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

For steam boilers

F22B 37/105

Informative references

Attention is drawn to the following places, which may be of interest for search:

Joining pipes to walls

F16L 41/00

Joining plastic pipes to walls

F16L 47/26

Sealing elements into header boxes or end plates of heat-exchangers

F28F 9/00

Holders for pipes passing through walls or partitions

Supporting of pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic (sleeves for supporting pipes, cables or protective tubing, between relatively movable points F16L 3/01, {fixation devices of optical cables in ducts G02B 6/508, installation of electric cables H02G 1/08})
References
Limiting references

This place does not cover:

Sleeves for supporting pipes, cables or protective tubing, between relatively movable points

F16L 3/01

Fixation devices of optical cables in ducts

G02B 6/508

Installation of electric cables

H02G 1/08

Rigid pipes
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Steam boiler tubes

F22B 37/10

of metal (F16L 9/16 - F16L 9/22 take precedence)
References
Limiting references

This place does not cover:

Rigid pipes wound from sheets or strips, with or without reinforcement

F16L 9/16

Rigid pipes obtained by bending a sheet longitudinally and connecting the edges

F16L 9/17

Double-walled pipes; Multi-channel pipes or pipe assemblies

F16L 9/18

Rigid pipes made of sound-absorbing materials or with sound-absorbing structure

F16L 9/21

Rigid pipes composed of a plurality of segments

F16L 9/22

Informative references

Attention is drawn to the following places, which may be of interest for search:

Finned pipes

F28F

Corrugated pipes
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Corrugated flexible pipes

F16L 11/15

of concrete, cement, or asbestos cement, with or without reinforcement (F16L 9/16 - F16L 9/22 take precedence)
References
Limiting references

This place does not cover:

Rigid pipes wound from sheets or strips, with or without reinforcement

F16L 9/16

Rigid pipes obtained by bending a sheet longitudinally and connecting the edges

F16L 9/17

Double-walled pipes; Multi-channel pipes or pipe assemblies

F16L 9/18

Rigid pipes made of sound-absorbing materials or with sound-absorbing structure

F16L 9/21

Rigid pipes composed of a plurality of segments

F16L 9/22

Informative references

Attention is drawn to the following places, which may be of interest for search:

Shaping clay or other ceramic compositions, slag or mixtures containing cementitious material

B28B

wound from sheets or strips, with or without reinforcement
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Making wound paper articles

B31C

Double-walled pipes; Multi-channel pipes or pipe assemblies
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Joints therefor

F16L 39/00

Pipes composed of a plurality of segments
Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

The term "segments" means radial segments, not axial segments

This group covers e.g.

media9.jpg

Hoses, i.e. flexible pipes
References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Suction-cleaner hoses

A47L 9/24

Informative references

Attention is drawn to the following places, which may be of interest for search:

Hose-like supports for pipes, cables or protective tubing, between relatively movable points

F16L 3/01

{two layers}
Definition statement

This place covers:

e.g. hoses with two layers of helically wound cord or wire

{three or more layers}
Definition statement

This place covers:

e.g. hoses with three or more layers of helically wound cord or wire

{two layers}
Definition statement

This place covers:

e.g. hoses with two braided layers

{three or more layers}
Definition statement

This place covers:

e.g. hoses with three of more braided layers

with corrugated wall {(F16L 11/24 takes precedence)}
Definition statement

This place covers:

corrugated hoses made from elastic material

References
Limiting references

This place does not cover:

Corrugated hoses wound from strips or bands

F16L 11/24

having reinforcements not embedded in the wall
Definition statement

This place covers:

e.g.

media10.jpg

Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints (joints for rigid pipes of plastics F16L 47/00; {non-disconnectible pipe-joints to walls or other pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of the other pipe F16L 41/082})
References
Limiting references

This place does not cover:

Non-disconnectible pipe-joints to walls or other pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of the other pipe

F16L 41/082

Non-disconnectible joints for rigid pipes of plastics

F16L 47/00

specially adapted for joining pipes of dissimilar materials {(joints between metal and plastic pipes F16L 47/24)}
References
Limiting references

This place does not cover:

Joints between metal and plastic pipes

F16L 47/24

Informative references

Attention is drawn to the following places, which may be of interest for search:

Disconnectible joints for pipes of dissimilar materials

F16L 25/0072

Welded joints
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Arc welding of curved planar seams

B23K 9/028

Soldered joints {(specially adapted for connecting metal hoses to rigid members F16L 33/26)}
References
Limiting references

This place does not cover:

Joints specially adapted for connecting metal hoses to rigid members

F16L 33/26

Informative references

Attention is drawn to the following places, which may be of interest for search:

Soldering metal

B23K 1/00

made by plastically deforming the material of the pipe, e.g. by flanging, rolling
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Working of metal tubes without essentially removing material

B21D

Screw-threaded joints {(hose connections with parts screwed directly on or into the hose F16L 33/24; joining pipes to wall F16L 41/00)}; Forms of screw-threads for such joints
References
Limiting references

This place does not cover:

Hose connections with parts screwed directly on or into the hose

F16L 33/24

Joining pipes to walls

F16L 41/00

Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Screw threaded connections for drilling rods (drill hammer)

E21B 17/042

Casing joints used in deep-drilling

E21B 17/08

Informative references

Attention is drawn to the following places, which may be of interest for search:

Lubricating compositions

C10M

with supplementary elements (F16L 15/04, {F16L 41/00 and F16L 43/02} take precedence)
Definition statement

This place covers:

screw threaded connections with supplementary elements, e.g. additional locking elements. Not covered are screw threaded connections with supplementary elements which form a sealing.

References
Limiting references

This place does not cover:

Screw-threaded joints with additional sealings

F16L 15/04

Branching pipes; Joining pipes to walls

F16L 41/00

Bends or siphons adapted to make use of special securing means

F16L 43/02

Joints with packing adapted to sealing by fluid pressure ({for hoses F16L 33/16} compensating devices F16L 51/00)
References
Limiting references

This place does not cover:

Sealing by fluid pressure for hoses

F16L 33/16

Compensating devices

F16L 51/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Sealing by fluid pressure for universal joints with partly spherical engaging surfaces

F16L 27/067

Joints allowing adjustment or movement only about the axis of one pipe

F16L 27/08

Joints comprising a flexible connection only

F16L 27/10

Joints allowing substantial longitudinal adjustment or movement

F16L 27/12

Couplings of the quick acting type

F16L 37/00

Sealings tightened by external pressure, inflatable packings

F16J 15/00

the sealing rings having radially directed ribs
Definition statement

This place covers:

media11.jpg

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

the term "radially directed ribs" also includes the ribs which are deformed in axial direction upon connection

the sealing rings having two lips parallel to each other
Definition statement

This place covers:

media12.jpg

with longitudinally split or divided sleeve
Definition statement

This place covers:

media13.jpg

the packing being sealed by the pressure of a fluid other than the fluid in or surrounding the pipe
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Expansion-compensation arrangements for pipe-lines

F16L 51/00

Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts ({screw-threaded joints F16L 15/00;} F16L 17/00 takes precedence; if using bolts or equivalent connecting means F16L 23/00; {electrically insulating F16L 25/02; adjustable joints, joints allowing movement F16L 27/00; specially adapted for pipes of brittle material F16L 49/06})
References
Limiting references

This place does not cover:

Screw threaded joints

F16L 15/00

Joints with packing adapted to sealing by fluid pressure

F16L 17/00

Flanged joints with sealing surfaces pressed together by bolts or equivalent connecting means

F16L 23/00

Electrically insulating joints

F16L 25/02

Adjustable joints, joints allowing movement

F16L 27/00

Specially adapted for pipes of brittle material

F16L 49/06

Special rules of classification

Looping references between F16L 19/00 and F16L 23/00 have been identified. Until this inconsistency is resolved, the current classification practice in CPC is as follows:

Flanged joints with sealing surfaces pressed together by means other than bolts or equivalent are classified only in F16L 19/00.

Flanged joints with sealing surfaces pressed together by bolts or equivalent are classified only in F16L 23/00.

{the collar not being integral with the pipe}
Definition statement

This place covers:

Joints with flanges not forming part of the pipe body. This includes welded or screwed on flanges which are not considered to be integral with the pipe

{a pressure ring being arranged between the clamping ring and the threaded member or the connecting member}
Definition statement

This place covers:

connections having two rings

the wedging action being effected by means of a ring
Definition statement

This place covers:

connections having one ring

{the ring being rotatably connected to one of the connecting parts}
Definition statement

This place covers:

connections wherein the ring rotates with the nut during the fastening

{the longitudinal cross-section of the ring not being modified during clamping}
Definition statement

This place covers:

connections wherein the ring being a split ring

the profile of the ring being altered
Definition statement

This place covers:

connection wherein the ring being no split ring

Joints with sleeve or socket (F16L 13/00, {F16L 15/00}, F16L 17/00, F16L 19/00, {F16L 25/0027, F16L 27/00, F16L 37/00} take precedence {; specially adapted to be made of plastics or to be used with pipes made of plastics F16L 47/06; specially adapted for pipes of brittle material F16L 49/02})
References
Limiting references

This place does not cover:

Non-disconnectable pipe-joints

F16L 13/00

Screw-threaded joints

F16L 15/00

Joints adapted to sealing by fluid pressure

F16L 17/00

Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut

F16L 19/00

Joints for pipes made of reinforced concrete

F16L 25/0027

Adjustable joints

F16L 27/00

Couplings of the quick-acting type

F16L 37/00

Joints with sleeve and socket specially adapted to be used with pipes of plastic

F16L 47/06

Joints with sleeve and socket specially adapted to be used with pipes of brittle material

F16L 49/02

Informative references

Attention is drawn to the following places, which may be of interest for search:

Devices for covering leaks in pipes or hoses

F16L 55/16

Flanged joints (F16L 13/00, F16L 17/00, F16L 19/00 take precedence; adjustable joints F16L 27/00; for hoses F16L 33/00; couplings of the quick-acting type F16L 37/00; for double-walled or multi-channel pipes or assemblies F16L 39/00; connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L 47/00; specially adapted for pipes of brittle material pipe F16L 49/00)
References
Limiting references

This place does not cover:

Non-disconnectable pipe joints

F16L 13/00

Joints adapted to sealing by fluid pressure

F16L 17/00

Flanged joints with sealing surfaces pressed together by means other than bolts or equivalent

F16L 19/00

Adjustable joints

F16L 27/00

For hoses

F16L 33/00

Couplings of the quick-acting type

F16L 37/00

For double-walled or multi-channel pipes or assemblies

F16L 39/00

Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics

F16L 47/00

Specially adapted for pipes of brittle material

F16L 49/00

Special rules of classification

Looping references between F16L 19/00 and F16L 23/00 have been identified. Until this inconsistency is resolved, the current classification practice in CPC is as follows:

Flanged joints with sealing surfaces pressed together by means other than bolts or equivalent are classified only in F16L 19/00.

Flanged joints with sealing surfaces pressed together by bolts or equivalent are classified only in F16L 23/00.

{Auxiliary devices}
Definition statement

This place covers:

devices for aligning, separating or locking of the flange connection

{Attachments}
Definition statement

This place covers:

Attachments to the joints having no sealing or connection function e.g. measuring devices or valves that are attached to, or integrated in the flange

media14.jpg

{the shoulder not being formed from the pipe}
Definition statement

This place covers:

media15.jpg

References
Limiting references

This place does not cover:

Joints with sleeve and socket, where the pipe ends are overlapping:

F16L 21/08

{the pipe ends abutting each other}
Definition statement

This place covers:

Joints where "pipe ends are abutting each other", which should be interpreted in the way that no extra sealing rings are present and there is surface to surface contact between the flanges

media16.jpg

Constructive types of pipe joints not provided for in groups F16L 13/00 - F16L 23/00 (adjustable or allowing movement F16L 27/00; with fluid cut-off means F16L 29/00; quick-acting F16L 37/00; for double-walled or multi-channel pipes F16L 39/00; connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L 47/00; specially adapted for pipes of brittle material F16L 49/00 ){; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means}
References
Limiting references

This place does not cover:

Adjustable joints

F16L 27/00

Joints with fluid cut-off means

F16L 29/00

Couplings of the quick-acting type

F16L 37/00

Joints or fittings for double-walled or multi-channel pipes or pipe assemblies

F16L 39/00

Specially adapted to be made of plastics or to be used with pipes made of plastics

F16L 47/00

Specially adapted for pipes of brittle material

F16L 49/00

References out of a residual place

Examples of places in relation to which this place is residual:

Non-disconnectable pipe joints

F16L 13/00

Screw-threaded joints

F16L 15/00

Joints adapted to sealing by fluid pressure

F16L 17/00

Joints in which sealing surfaces are pressed together by means of a member, e.g. swivel nut

F16L 19/00

Joints with sleeve or socket

F16L 21/00

Flanged joints

F16L 23/00

{Combination of a quick-acting type coupling and a conventional one}
Definition statement

This place covers:

media17.jpg

specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electrically-conductive connections between or with tubular conductors

F16L 47/00

Electrically insulating joints or couplings
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Insulating bodies in general

H01B

comprising a collar or ring having a threaded pin rigid with the pipe-encircling member
Definition statement

This place covers:

media18.jpg

Sleeveless joints between two pipes, one being introduced into the other
Definition statement

This place covers:

media19.jpg

Adjustable joints, Joints allowing movement (of the quick-acting type F16L 37/50; for double-walled or multi-channel pipe assemblies F16L 39/04; {connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L 47/00; connecting arrangements specially adapted for pipes of brittle material F16L 49/00})
References
Limiting references

This place does not cover:

Couplings of the quick-acting type

F16L 37/50

For double-walled or multi-channel pipes or assemblies

F16L 39/04

Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics

F16L 47/00

Specially adapted to be used with pipes of brittle material

F16L 49/00

Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Connections between hoses and sprayers

B05B

Informative references

Attention is drawn to the following places, which may be of interest for search:

Branching pipes, wherein the branch pipes are moveable

F16L 41/18

Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Articulated hoses made of rigid material

F16L 11/18

with partly spherical engaging surfaces
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Joints with, between the surfaces, a flexible element which undergoes shear and flexure

F16L 27/103

held in place by a screwed member having an internal spherical surface
Definition statement

This place covers:

joints held together with a swivel nut

allowing adjustment or movement only about the axis of one pipe
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Swivel joints in hose lines for flushing boreholes

E21B 21/02

{Arrangements of joints with one another and with pipes or hoses}
Definition statement

This place covers:

e.g.

media20.jpg

allowing substantial longitudinal adjustment or movement (by use of screw-thread F16L 15/02)
References
Limiting references

This place does not cover:

Joint allowing movement by use of screw-threads

F16L 15/02

Informative references

Attention is drawn to the following places, which may be of interest for search:

Telescopic bends

F16L 43/006

Joints with fluid cut-off means (quick-acting joints with cut-off means F16L 37/28)
Definition statement

This place covers:

The fluid cut off means must be a part of, or functionally associated with the connection, not just a valve in a pipe, otherwise its classified only with the valves F16K

References
Limiting references

This place does not cover:

Couplings of the quick-acting type with cut-off means

F16L 37/28

Informative references

Attention is drawn to the following places, which may be of interest for search:

Valves, taps and cocks in general

F16K

with a cut-off device in one of the two pipe ends, the cut-off device being automatically opened when the coupling is applied
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Screw joints without cut-off devices

F16L 19/00

with a cut-off device in each of the two pipe ends, the cut-off devices being automatically opened when the coupling is applied
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Screw joints without cut-off devices

F16L 19/00

Arrangements for connecting hoses to one another or to flexible sleeves (F16L 33/00 takes precedence)
Definition statement

This place covers:

hoses directly connected to each other

References
Limiting references

This place does not cover:

Arrangements for connecting hose to rigid members

F16L 33/00

Rigid hose connectors, i.e. single members engaging both hoses

F16L 33/00

Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Hose couplings specially adapted for suction cleaners

A47L 9/24

Informative references

Attention is drawn to the following places, which may be of interest for search:

Hand tools per se for inserting fittings into hoses

B25B 27/10

Hose-clips
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Covering leaks in pipes or hoses

F16L 55/16

tightened by deforming radially extending loops or folds
Definition statement

This place covers:

e.g. Oetiker ears

with a taping-bolt, i.e. winding up the end of the hose-encircling member
Definition statement

This place covers:

e.g. fastening means working like a sardine-can opener

specially adapted for hoses of metal
Definition statement

This place covers:

corrugated hoses

Special arrangements used in connection with end fittings of hoses, e.g. safety or protecting devices
Definition statement

This place covers:

safety housings; devices against unauthorized use, anti-kink devices for pipe ends; pressure relief devices

Couplings of the quick-acting type (radially binding sleeves F16L 17/04, F16L 21/06; connecting hoses to rigid members F16L 33/00; connections made automatically when vehicles are brought together B60D, B61G; specially adapted for lubricating devices F16N 21/00)
Definition statement

This place covers:

Joints wherein the connection is established by one or two simple quick movements

References
Limiting references

This place does not cover:

Radially binding sleeves

F16L 17/04, F16L 21/06

Connecting hoses to rigid members

F16L 33/00

Connections made automatically when vehicles are brought together

B60D, B61G

Specially adapted for lubricating devices

F16N 21/00

Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Connections between hoses and sprayers

B05B

Informative references

Attention is drawn to the following places, which may be of interest for search:

Welded connections or screwed connections

F16L 13/00, F16L 15/00

in which the connection is maintained only by friction of the parts being joined (F16L 37/22 takes precedence)
Definition statement

This place covers:

Couplings that can be separated by force, e.g. pulling strongly

References
Limiting references

This place does not cover:

Connections maintained by means of balls, rollers or helical springs under radial pressure between the parts

F16L 37/22

combined with automatic locking
Definition statement

This place covers:

Joints wherein the connection is established by one simple quick movement: simply push the two pipe ends together: "click"

{by means of a ring pivoting so as to lie against the tube}
Definition statement

This place covers:

media21.jpg

{rocking freely}
Definition statement

This place covers:

Couplings with rigid hook members which can pivot

media22.jpg

by means of latching members pushed radially by spring-like elements
Definition statement

This place covers:

media23.jpg

References
Limiting references

This place does not cover:

Radially moved latching members forming a ring

F16L 37/0841

by means of hooks hinged about an axis
Definition statement

This place covers:

media24.jpg

using a rotary external sleeve or ring on one part
Definition statement

This place covers:

Joints wherein the connection is established by two simple quick movements: Pushing the two pipe ends together plus an additional second action; an action to achieve the locking

{using hooks hinged about an axis placed behind a flange and which act behind the other flange}
Definition statement

This place covers:

media25.jpg

Joints tightened by the action of a wedge-shaped hinged hooks
Definition statement

This place covers:

media26.jpg

GB607402

Joints tightened by eccentrics or rotatable cams
Definition statement

This place covers:

media27.jpg

US5904380

Bayonet-type couplings
Definition statement

This place covers:

Joints wherein the locking pins are visible in closed position

the male part having lugs on its periphery penetrating in the corresponding slots provided in the female part
Definition statement

This place covers:

Bayonet type couplings with male part having external lugs, wherein the locking pins are not visible in closed position

adjustable; allowing movement of the parts joined
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Adjustable joints in general

F16L 27/00

Joints for double-walled or multi-channel pipes or pipe assemblies

F16L 37/56

Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
References
Limiting references

This place does not cover:

Joints of the quick acting type

F16L 37/56

allowing adjustment or movement {(of the multiline swivel type F16L 39/06)}
Definition statement

This place covers:

Connections wherein the different lines turn together

media28.png

References
Limiting references

This place does not cover:

Joints of the multiple swivel type

F16L 39/06

Informative references

Attention is drawn to the following places, which may be of interest for search:

Joints allowing adjustment or movement in general

F16L 27/00

of the multiline swivel type, e.g. comprising a plurality of axially mounted modules
Definition statement

This place covers:

Connections wherein the different lines are independently turnable

media29.jpg

FR2538875

Branching pipes; Joining pipes to walls (F16L 39/00 takes precedence {; characterised by couplings of the quick-acting type F16L 37/008; specially adapted to be made of plastics or to be used with pipes made of plastics F16L 47/26 })
Definition statement

This place covers:

joining pipes to walls of other pipes

References
Limiting references

This place does not cover:

The branch pipe being joint to the main pipe or the wall by a coupling of the quick acting type

F16L 37/008

Joints or fittings for double-walled or multi-channel pipes or pipe assemblies

F16L 39/00

Specially adapted to be made of plastics or to be used with pipes made of plastics

F16L 47/26

Informative references

Attention is drawn to the following places, which may be of interest for search:

Pipes passing through walls

F16L 5/00

Connectors not designed for conveying fluid

F16B 9/00

{adjustable and comprising a hollow threaded part in an opening}
Definition statement

This place covers:

media30.jpg

FR2538875

{adjustable and comprising a bend}
Definition statement

This place covers:

media31.jpg

DE1475792

comprising junction pieces for four or more pipe members
Definition statement

This place covers:

e.g. manifolds

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Manifolds for hydraulics and pneumatics

F15B 13/0807

Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor
References
Limiting references

This place does not cover:

Tapping means specially adapted for plastic pipes

F16L 47/34

{without removal of material (F16L 41/065 takes precedence)}
Definition statement

This place covers:

e.g. the tapping means piercing the wall

{without removal of material}
Definition statement

This place covers:

e.g. the tapping means piercing the wall by using guidance on attaching means embracing the pipe

{Non-disconnectible joints, e.g. soldered, adhesive or caulked joints}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Non-disconnectible pipe joints in general

F16L 13/00

Bends; Siphons (with cleaning apertures F16L 45/00)
References
Limiting references

This place does not cover:

Bends with cleaning apertures

F16L 45/00

Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Expansion-compensation arrangements making use of bends

F16L 51/04

Odour seals for basins

E03C 1/18

Siphons for water-closets

E03D 11/18

Siphons in general

F04F 10/00

adapted to make use of special securing means
Definition statement

This place covers:

e.g. stress relief devices holding the pipe on both sides of the bend

media32.jpg

US2010244437

Pipe units with cleaning aperture and closure therefor
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Means for stopping flow from or in pipes or hoses

F16L 55/10

Launching or retrieval of pigs or moles

F16L 55/46

Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics {(connections for hoses of plastics F16L 33/006)}
Relationships with other classification places

Not covered are fittings made of plastic or which are used with plastic pipes, but are not specially adapted therefor, e.g. if they could be made of any other material without any adaptations. These fittings are classified in the general groups for the respective connections.

References
Limiting references

This place does not cover:

Connections for hoses of plastics

F16L 33/006

Informative references

Attention is drawn to the following places, which may be of interest for search:

Rigid pipes of plastics

F16L 9/12

Bends or siphons

F16L 43/008

Welded joints; Adhesive joints
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Non-disconnnectible pipe-joints in general

F16L 13/00

with a swivel nut or collar engaging the pipe
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Joints in which sealing surfaces are pressed together by means of a member screwed on or into one of the joint parts, in general

F16L 19/00

with sleeve or socket formed by or in the pipe end
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Joints with sleeves or socket, in general

F16L 21/00

using shrink-down material
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

In other than plastics

F16L 13/004

Connecting arrangements, e.g. joints, specially adapted for pipes of brittle material, e.g. glass, earthenware
Relationships with other classification places

Not covered are joints of pipes of brittle material when the connection is not specially adapted therefor, e.g. if they could be made of any other material without any adaptations. These fittings are classified in the general groups for the respective connections.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Sleeves, nipples of reduction pieces made of elastic material

F16L 21/005

Joints in which sealing surfaces are pressed together by means of a member, e.g. swivel nut, screwed on, or into, one of the joint parts
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Joints in which sealing surfaces are pressed together by means of a member screwed on or into one of the joint parts, in general

F16L 19/00

Adjustable joints; Joints allowing movement
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Adjustable joints, in general

F16L 27/00

Expansion-compensation arrangements for pipe-lines (telescopic pipes F16L 27/12)
References
Limiting references

This place does not cover:

Telescopic pipes

F16L 27/12

Informative references

Attention is drawn to the following places, which may be of interest for search:

Hangers or supports for pipes with special provision allowing movement of the pipes

F16L 3/16

making use of bellows or an expansible folded or corrugated tube
References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Bellows that are intended to provide adjustment or movement to the coupling

F16L 27/107

Informative references

Attention is drawn to the following places, which may be of interest for search:

Rigid corrugated pipes

F16L 9/06

Corrugated hoses made of rigid material

F16L 11/15

{with the expansion or contraction of each corrugation being limited}
Definition statement

This place covers:

media33.jpg

US6422611

comprising two or more bellows
Definition statement

This place covers:

media34.jpg

DE102007052243

Heating of pipes or pipe systems; Cooling of pipes or pipe systems
References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Heating or cooling of hoses

F16L 11/12

Devices for preventing freezing of pipes in water main or service pipe systems

E03B 7/12

Devices for thawing frozen pipes in water main or service pipe systems

E03B 7/14

Informative references

Attention is drawn to the following places, which may be of interest for search:

Heating or cooling of valves

F16K 31/002

Pipe-line systems, pipe-lines

F17D

Heat exchangers

F28D

Devices or appurtenances for use in, or in connection with, pipes or pipe systems (the preceding groups and groups F16L 57/00, F16L 59/00 take precedence; repairing or joining pipes on or under water F16L 1/26; nozzles B05B; cleaning of pipes B08B 9/02; {arrangements of draining devices for water main or service pipe systems E03B 7/08;} devices for preventing bursting of water pipes by freezing E03B 7/10; {draining devices for hydrants E03B 9/14;} for domestic plumbing installations E03C 1/00; {steam traps for draining of liquids from enclosures containing gases or vapours F16T}; arrangements for sealing leaky tubes or conduits of heat-exchangers F28F 11/00)
Definition statement

This place covers:

Devices for use in, or in connection with pipes or pipe systems that are not covered by groups F16L 1/00F16L 53/00, F16L 57/00, F16L 59/00, e.g. damping devices, means for stopping flow, devices for covering leaks, pigs or moles, preventing accumulation of dirt.

References
Limiting references

This place does not cover:

Repairing or joining pipes on or under water

F16L 1/26

Cleaning of pipes

B08B 9/02

Devices for preventing bursting of water pipes by freezing

E03B 7/10

Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Arrangements of draining devices for water main or service pipe systems

E03B 7/08

Draining devices for hydrants

E03B 9/14

Devices for domestic plumbing installations

E03C 1/00

Arrangements for sealing leaky tubes or conduits of heat-exchangers

F28F 11/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Nozzles

B05B

Energy absorbers; Noise absorbers (in valves F16K 47/00)
References
Limiting references

This place does not cover:

Means in valves for absorbing fluid energy

F16K 47/00

Informative references

Attention is drawn to the following places, which may be of interest for search:

Springs, shock absorbers, means for damping vibration in general

F16F

Throttle passages
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Influencing flow of fluids

F15D 1/00

Control of fluid flow

G05D 7/00

{using transversal baffles defining a tortuous path}
Definition statement

This place covers:

media35.jpg

FR2942018

This group covers

media36.jpg

FR2447069

Devices damping pulsations or vibrations in fluids {(F16L 55/02 takes precedence)}
References
Limiting references

This place does not cover:

Energy absorbers; Noise absorbers

F16L 55/02

Informative references

Attention is drawn to the following places, which may be of interest for search:

Counter-acting cavitation in pumps

F04B 39/00

Springs, shock absorbers, means for damping vibration in general

F16F

Means in valves for absorbing fluid energy

F16K 47/00

Buffers therefor
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Accumulators

F15B 1/04

the gas in the reservoir being separated from the fluid in the pipe
Definition statement

This place covers:

pneumatic reservoirs having a membrane

Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining (apparatus for draining F16T)
References
Limiting references

This place does not cover:

Apparatus for draining

F16T

Informative references

Attention is drawn to the following places, which may be of interest for search:

Arrangement of draining devices in water supply systems

E03B 7/08

Venting or aerating devices per se

F16K 24/00

Air conditioning, e.g. de-watering, in pneumatic systems
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Air conditioning in general

F24F

Plugs {(F16L 55/128 takes precedence)}
Definition statement

This place covers:

Closing means which can be fixed inside the pipe end

References
Limiting references

This place does not cover:

In situ expandable members introduced axially into pipes or hoses

F16L 55/128

Caps {(F16L 55/1286 takes precedence)}
Definition statement

This place covers:

Closing means which can be fixed on the outside of the pipe end

References
Limiting references

This place does not cover:

In situ expandable caps introduced axially into pipes or hoses

F16L 55/1286

a pipe {or flexible liner} being inserted in the damaged section
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Protection against corrosion

F16L 58/10

by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose
Definition statement

This place covers:

also two half sleeves for covering leaks in pipes from outside the pipe

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Hose-clips for connecting hoses to rigid members

F16L 33/02

specially adapted for bends, branch units, branching pipes or the like
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Pigs or moles specially adapted to work at or near a junction between a main and a lateral pipe

F16L 55/265

Appliances for use in repairing pipes (F16L 55/10 takes precedence)
References
Limiting references

This place does not cover:

Means for stopping flow from or in pipes or hoses

F16L 55/10

Informative references

Attention is drawn to the following places, which may be of interest for search:

Pigs or moles for pipes, in general

F16L 55/26

Preventing accumulation of dirt or other matter in the pipes, e.g. by traps, by strainers
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Cleaning of pipes

B08B

Preventing accumulation in pneumatic conveyors

B65G 53/521

Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
Definition statement

This place covers:

General features of pigs or moles for use in pipes or pipe systems

Relationships with other classification places

Special adaptations of pigs or moles for the use in pipes or pipe systems as defined in Note 1. are classified only in the corresponding place of the Note.

General features of pigs or moles, e.g. propulsion means, not specially adapted to the use in pipes or pipe systems as defined in Note 1. are classified in F16L 55/26 and subgroups.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Tunnel railway systems

B61B 13/10

Conveying articles through pipes or tubes, e.g. tube mail systems

B65G 1/00

Protection of pipes or objects of similar shape against external or internal damage or wear ({protection under water F16L 1/123;} supporting of pipes inside other pipes or sleeves F16L 7/00; used in connection with end fittings of hoses F16L 35/00; protection thereof during transport B65D 59/00)
References
Limiting references

This place does not cover:

Protection under water

F16L 1/123

Supporting of pipes inside other pipes or sleeves

F16L 7/00

Used in connection with end fittings or hoses

F16L 35/00

Protecting of pipes during transport

B65D 59/00

Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

For steam boilers

F22B 37/107

Informative references

Attention is drawn to the following places, which may be of interest for search:

For tubular articles not conveying fluid

B65D 59/02

against wear (F16L 57/04 takes precedence)
References
Limiting references

This place does not cover:

Protection against fire or sources of extreme heat

F16L 57/04

Informative references

Attention is drawn to the following places, which may be of interest for search:

Wear protection of pipes conveying material in bulk, e.g. concrete

B65G 53/523

Protection of pipes or pipe fittings against corrosion or incrustation (compound tubes F16L 9/14)
References
Limiting references

This place does not cover:

Compound tubes

F16L 9/14

Informative references

Attention is drawn to the following places, which may be of interest for search:

Supporting of pipes inside other pipes or sleeves

F16L 7/00

Cleaning pipes or tubes

B08B 9/02

Cathodic corrosion protection

C25F

by means of internal or external coatings
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Coatings for thermal insulation

F16L 59/00

Methods or machines for applying coatings

B28B 11/04, B28B 21/94

Coatings characterised by the materials used (F16L 58/16 takes precedence)
References
Limiting references

This place does not cover:

Coatings in the form of a bandage

F16L 58/16

Informative references

Attention is drawn to the following places, which may be of interest for search:

Compositions of coatings

C04B

the coating being in the form of a bandage
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Apparatus for covering cores by winding

B65H 81/00

specially adapted for pipe fittings
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Non-disconnectible joints of coated pipes

F16L 13/0254

Screw joints for coated pipes comprising pipes with collars or flanges

F16L 19/0243

Thermal insulation in general
Definition statement

This place covers:

Thermal insulation for pipes or hoses or pipe cover elements, or in general, e.g. when no other special application of the insulation is given. This group does not cover materials for thermal insulation, which are classified in the specific groups for the materials.

References
Application-oriented references

Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Heat, sound insulation in buildings

E04B

Heat insulation of steam engines

F01B 31/08

Heat insulation in rotary piston machines

F01C 21/06

Thermal or acoustic insulation for combustion engines

F02B 77/11

Heat insulation of pumps

F04C 29/04

Thermal insulation of pressure vessels

F17C 1/12

Vessels not under pressure, with provision for insulation

F17C 3/02

For refrigerators

F25D

{with a hinge opposite the slit}
Definition statement

This place covers:

media37.jpg

DE202005004339U

Arrangements using an air layer or vacuum
Definition statement

This place covers:

Arrangements using an air layer or vacuum, air meaning any type of gas

Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Pipe supports allowing movement in axial direction

F16L 3/18

{for pipes passing through walls or partitions}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Devices for use where pipes, cables or protective tubing pass through walls or partition in general

F16L 5/00

{in which the temperature of the medium is below that of the ambient temperature (rigid pipes of wood F16L 9/006; vacuum insulation F16L 59/065)}
Definition statement

This place covers:

insulation for pipes conveying cryogenic fluids

Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Means in or on valves for heating or cooling

F16K 49/00

{covering the end of an insulated section}
Definition statement

This place covers:

media38.jpg

US6752176

adapted for expansion-compensation devices
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Expansion-compensation arrangements for pie-lines

F16L 51/00