CPC Definition - Subclass F16L
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)
- 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 43/00 Bends
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
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 | |
Vacuum cleaners, e.g. corrugated hoses; leaning machines, e.g. hose connections combined with electrical contacts, steam hoses with cables for steam ironing | |
Connectors in the medical field, e.g. catheters | |
Fire fighting; fire fighting hoses; sprinkler systems | |
Micro/macro connectors, e.g. for lab on chip | |
Sprayers | |
Cleaning of pipes | |
Air conditioning ducts in vehicles | |
Fuel conduits in vehicles, connections to LPG tank | |
Fixing of hoses or cables in motors vehicles | |
Arrangement of piping or air hoses for brake systems | |
Pipe laying ships | |
Containers/bags/vessels/tanks Connections to containers in general; Closing straps | |
Bends for conveying concrete | |
Wear protection for bends for conveying concrete | |
LPG couplings/filling nozzles/ Transferring fluids, e.g. fuel from bulk to vehicles or portable containers | |
Dispensing fluids, e.g. filling bottles or cans | |
Fastening of pipes or cables to bridges | |
Couplings for dredgers | |
Domestic plumbing: shower hoses; toilet installations; drainage; Sewage | |
Downpipes for roof drainage, fixing means therefore | |
Vertical ducts, channels in buildings, e.g. chimneys | |
Fluid concrete transport | |
Air ducts for ventilation of mines or tunnels, connections therefore | |
Suspension devices for tubes or the like in mines or tunnels | |
Exhaust pipes | |
Air intake in motor engines, e.g. ducts between motor and filter | |
Fixing devices, e.g. hollow screws | |
Valves | |
Conduits, junctions for lubrication systems | |
Connections to gas tanks | |
Pipelines/pipe systems | |
Water tubes of steam boilers | |
Joints, connection for chimneys or flues | |
Hot water systems, central heating, e.g. distributors for heating built up from modules | |
Ducting arrangements for air-conditioning | |
Heat exchangers | |
Sealing elements into header boxes or end plates of heat-exchangers | |
Pipes in nuclear reactors | |
Installation of electric cables, e.g. cable or pipe binders, cable or pipe channels |
- 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
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:
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 | |
Soldering or welding | |
Pipe laying ships | |
Lifting-gear and load-engaging elements | |
Hydraulic installations, soil drainage | |
Excavations or underwater constructions | |
Machines for digging trenches in combination with pipe-assembly | |
Tunnelling | |
Laying electric, or combined optical and electric, cables |
This place covers:
Pipes passing over streets or bodies of water
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
This place does not cover:
Pipe laying methods wherein the pipe is made by connecting together short pipe pieces |
Attention is drawn to the following places, which may be of interest for search:
Buoyant hoses |
This place covers:
protection against fishing, cortex induced vibrations
Attention is drawn to the following places, which may be of interest for search:
Protection of pipes in general |
This place covers:
pipes that stay vertically, for example: riser pipes
This place covers:
e.g.pipe laying methods wherein the pipe segments are joined together on the bottom of the body of water.
Attention is drawn to the following places, which may be of interest for search:
Buoys |
This place covers:
clamping devices holding the pipe during laying
This place covers:
e.g. checking welding seams or coatings just before laying of the pipe
Attention is drawn to the following places, which may be of interest for search:
Floats per se | |
Salvaging sunken vessels or underwater object |
Attention is drawn to the following places, which may be of interest for search:
Buoyant hoses | |
Joints per se | |
Joining pipes to underwater installations |
This place does not cover:
Anchors for holding pipes on or under the ground | |
Sound-damping supports | |
Supports for insulated pipes |
Attention is drawn to the following places, which may be of interest for search:
Holders for pipes passing through walls or partitions |
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 |
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 |
Attention is drawn to the following places, which may be of interest for search:
Staples |
This place covers:
e.g. pipe clamps made of two parts, the parts being connected on one side and the opposite side stays open
This place covers:
This place covers:
This place does not cover:
Movement of the pipes being hydraulically or electrically controlled |
This place covers:
This place covers:
Support for supporting a number of parallel pipes at intervals, wherein the brackets and support are originally two different parts
This place covers:
This place covers:
one integral support for all pipes
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 | |
Supports for two pipes only |
This place does not cover:
Passing insulated pipes through walls | |
Arrangements for leading electric cables or lines through walls, floors or ceilings |
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 |
Attention is drawn to the following places, which may be of interest for search:
Joining pipes to walls | |
Joining plastic pipes to walls | |
Sealing elements into header boxes or end plates of heat-exchangers |
Holders for pipes passing through walls or partitions
This place does not cover:
Sleeves for supporting pipes, cables or protective tubing, between relatively movable points | |
Fixation devices of optical cables in ducts | |
Installation of electric cables |
Attention is drawn to the following places, which may be of interest for search:
Steam boiler tubes |
This place does not cover:
Rigid pipes wound from sheets or strips, with or without reinforcement | |
Rigid pipes obtained by bending a sheet longitudinally and connecting the edges | |
Double-walled pipes; Multi-channel pipes or pipe assemblies | |
Rigid pipes made of sound-absorbing materials or with sound-absorbing structure | |
Rigid pipes composed of a plurality of segments |
Attention is drawn to the following places, which may be of interest for search:
Finned pipes |
Attention is drawn to the following places, which may be of interest for search:
Corrugated flexible pipes |
This place does not cover:
Rigid pipes wound from sheets or strips, with or without reinforcement | |
Rigid pipes obtained by bending a sheet longitudinally and connecting the edges | |
Double-walled pipes; Multi-channel pipes or pipe assemblies | |
Rigid pipes made of sound-absorbing materials or with sound-absorbing structure | |
Rigid pipes composed of a plurality of segments |
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 |
Attention is drawn to the following places, which may be of interest for search:
Joints therefor |
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.
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 |
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 |
This place covers:
e.g. hoses with two layers of helically wound cord or wire
This place covers:
e.g. hoses with three or more layers of helically wound cord or wire
This place covers:
e.g. hoses with three of more braided layers
This place covers:
corrugated hoses made from elastic material
This place does not cover:
Corrugated hoses wound from strips or bands |
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 | |
Non-disconnectible joints for rigid pipes of plastics |
This place does not cover:
Joints between metal and plastic pipes |
Attention is drawn to the following places, which may be of interest for search:
Disconnectible joints for pipes of dissimilar materials |
Attention is drawn to the following places, which may be of interest for search:
Arc welding of curved planar seams |
This place does not cover:
Joints specially adapted for connecting metal hoses to rigid members |
Attention is drawn to the following places, which may be of interest for search:
Soldering metal |
Attention is drawn to the following places, which may be of interest for search:
Working of metal tubes without essentially removing material |
This place does not cover:
Hose connections with parts screwed directly on or into the hose | |
Joining pipes to walls |
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) | |
Casing joints used in deep-drilling |
Attention is drawn to the following places, which may be of interest for search:
Lubricating compositions |
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.
This place does not cover:
Screw-threaded joints with additional sealings | |
Branching pipes; Joining pipes to walls | |
Bends or siphons adapted to make use of special securing means |
This place does not cover:
Sealing by fluid pressure for hoses | |
Compensating devices |
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 | |
Joints allowing adjustment or movement only about the axis of one pipe | |
Joints comprising a flexible connection only | |
Joints allowing substantial longitudinal adjustment or movement | |
Couplings of the quick acting type | |
Sealings tightened by external pressure, inflatable packings |
This place covers:
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
This place covers:
Attention is drawn to the following places, which may be of interest for search:
Expansion-compensation arrangements for pipe-lines |
This place does not cover:
Screw threaded joints | |
Joints with packing adapted to sealing by fluid pressure | |
Flanged joints with sealing surfaces pressed together by bolts or equivalent connecting means | |
Electrically insulating joints | |
Adjustable joints, joints allowing movement | |
Specially adapted for pipes of brittle material |
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.
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
This place covers:
connections having two rings
This place covers:
connections having one ring
This place covers:
connections wherein the ring rotates with the nut during the fastening
This place covers:
connections wherein the ring being a split ring
This place covers:
connection wherein the ring being no split ring
This place does not cover:
Non-disconnectable pipe-joints | |
Screw-threaded joints | |
Joints adapted to sealing by fluid pressure | |
Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut | |
Joints for pipes made of reinforced concrete | |
Adjustable joints | |
Couplings of the quick-acting type | |
Joints with sleeve and socket specially adapted to be used with pipes of plastic | |
Joints with sleeve and socket specially adapted to be used with pipes of brittle material |
Attention is drawn to the following places, which may be of interest for search:
Devices for covering leaks in pipes or hoses |
This place does not cover:
Non-disconnectable pipe joints | |
Joints adapted to sealing by fluid pressure | |
Flanged joints with sealing surfaces pressed together by means other than bolts or equivalent | |
Adjustable joints | |
For hoses | |
Couplings of the quick-acting type | |
For double-walled or multi-channel pipes or assemblies | |
Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics | |
Specially adapted for pipes of brittle material |
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.
This place covers:
devices for aligning, separating or locking of the flange connection
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
This place covers:
This place does not cover:
Joints with sleeve and socket, where the pipe ends are overlapping: |
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
This place does not cover:
Adjustable joints | |
Joints with fluid cut-off means | |
Couplings of the quick-acting type | |
Joints or fittings for double-walled or multi-channel pipes or pipe assemblies | |
Specially adapted to be made of plastics or to be used with pipes made of plastics | |
Specially adapted for pipes of brittle material |
Examples of places in relation to which this place is residual:
Non-disconnectable pipe joints | |
Screw-threaded joints | |
Joints adapted to sealing by fluid pressure | |
Joints in which sealing surfaces are pressed together by means of a member, e.g. swivel nut | |
Joints with sleeve or socket | |
Flanged joints |
This place covers:
Attention is drawn to the following places, which may be of interest for search:
Electrically-conductive connections between or with tubular conductors |
Attention is drawn to the following places, which may be of interest for search:
Insulating bodies in general |
This place covers:
This place covers:
This place does not cover:
Couplings of the quick-acting type | |
For double-walled or multi-channel pipes or assemblies | |
Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics | |
Specially adapted to be used with pipes of brittle material |
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 |
Attention is drawn to the following places, which may be of interest for search:
Branching pipes, wherein the branch pipes are moveable |
Attention is drawn to the following places, which may be of interest for search:
Articulated hoses made of rigid material |
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 |
This place covers:
joints held together with a swivel nut
Attention is drawn to the following places, which may be of interest for search:
Swivel joints in hose lines for flushing boreholes |
This place covers:
e.g.
This place does not cover:
Joint allowing movement by use of screw-threads |
Attention is drawn to the following places, which may be of interest for search:
Telescopic bends |
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
This place does not cover:
Couplings of the quick-acting type with cut-off means |
Attention is drawn to the following places, which may be of interest for search:
Valves, taps and cocks in general |
Attention is drawn to the following places, which may be of interest for search:
Screw joints without cut-off devices |
Attention is drawn to the following places, which may be of interest for search:
Screw joints without cut-off devices |
This place covers:
hoses directly connected to each other
This place does not cover:
Arrangements for connecting hose to rigid members | |
Rigid hose connectors, i.e. single members engaging both hoses |
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 |
Attention is drawn to the following places, which may be of interest for search:
Hand tools per se for inserting fittings into hoses |
Attention is drawn to the following places, which may be of interest for search:
Covering leaks in pipes or hoses |
This place covers:
e.g. Oetiker ears
This place covers:
e.g. fastening means working like a sardine-can opener
This place covers:
corrugated hoses
This place covers:
safety housings; devices against unauthorized use, anti-kink devices for pipe ends; pressure relief devices
This place covers:
Joints wherein the connection is established by one or two simple quick movements
This place does not cover:
Radially binding sleeves | |
Connecting hoses to rigid members | |
Connections made automatically when vehicles are brought together | |
Specially adapted for lubricating devices |
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 |
Attention is drawn to the following places, which may be of interest for search:
Welded connections or screwed connections |
This place covers:
Couplings that can be separated by force, e.g. pulling strongly
This place does not cover:
Connections maintained by means of balls, rollers or helical springs under radial pressure between the parts |
This place covers:
Joints wherein the connection is established by one simple quick movement: simply push the two pipe ends together: "click"
This place covers:
This place covers:
Couplings with rigid hook members which can pivot
This place covers:
This place does not cover:
Radially moved latching members forming a ring |
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
This place covers:
This place covers:
GB607402
This place covers:
US5904380
This place covers:
Joints wherein the locking pins are visible in closed position
This place covers:
Bayonet type couplings with male part having external lugs, wherein the locking pins are not visible in closed position
Attention is drawn to the following places, which may be of interest for search:
Adjustable joints in general | |
Joints for double-walled or multi-channel pipes or pipe assemblies |
This place does not cover:
Joints of the quick acting type |
This place covers:
Connections wherein the different lines turn together
This place does not cover:
Joints of the multiple swivel type |
Attention is drawn to the following places, which may be of interest for search:
Joints allowing adjustment or movement in general |
This place covers:
Connections wherein the different lines are independently turnable
FR2538875
This place covers:
joining pipes to walls of other pipes
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 | |
Joints or fittings for double-walled or multi-channel pipes or pipe assemblies | |
Specially adapted to be made of plastics or to be used with pipes made of plastics |
This place covers:
FR2538875
This place covers:
e.g. manifolds
Attention is drawn to the following places, which may be of interest for search:
Manifolds for hydraulics and pneumatics |
This place does not cover:
Tapping means specially adapted for plastic pipes |
This place covers:
e.g. the tapping means piercing the wall
This place covers:
e.g. the tapping means piercing the wall by using guidance on attaching means embracing the pipe
Attention is drawn to the following places, which may be of interest for search:
Non-disconnectible pipe joints in general |
This place does not cover:
Bends with cleaning apertures |
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 | |
Odour seals for basins | |
Siphons for water-closets | |
Siphons in general |
This place covers:
e.g. stress relief devices holding the pipe on both sides of the bend
US2010244437
Attention is drawn to the following places, which may be of interest for search:
Means for stopping flow from or in pipes or hoses | |
Launching or retrieval of pigs or moles |
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.
This place does not cover:
Connections for hoses of plastics |
Attention is drawn to the following places, which may be of interest for search:
Rigid pipes of plastics | |
Bends or siphons |
Attention is drawn to the following places, which may be of interest for search:
Non-disconnnectible pipe-joints in general |
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 |
Attention is drawn to the following places, which may be of interest for search:
Joints with sleeves or socket, in general |
Attention is drawn to the following places, which may be of interest for search:
In other than plastics |
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.
Attention is drawn to the following places, which may be of interest for search:
Sleeves, nipples of reduction pieces made of elastic material |
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 |
Attention is drawn to the following places, which may be of interest for search:
Adjustable joints, in general |
This place does not cover:
Telescopic pipes |
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 |
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 |
Attention is drawn to the following places, which may be of interest for search:
Rigid corrugated pipes | |
Corrugated hoses made of rigid material |
This place covers:
US6422611
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 | |
Devices for preventing freezing of pipes in water main or service pipe systems | |
Devices for thawing frozen pipes in water main or service pipe systems |
Attention is drawn to the following places, which may be of interest for search:
Heating or cooling of valves | |
Pipe-line systems, pipe-lines | |
Heat exchangers |
This place covers:
Devices for use in, or in connection with pipes or pipe systems that are not covered by groups F16L 1/00 – F16L 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.
This place does not cover:
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 | |
Draining devices for hydrants | |
Devices for domestic plumbing installations | |
Arrangements for sealing leaky tubes or conduits of heat-exchangers |
Attention is drawn to the following places, which may be of interest for search:
Nozzles |
This place does not cover:
Means in valves for absorbing fluid energy |
Attention is drawn to the following places, which may be of interest for search:
Springs, shock absorbers, means for damping vibration in general |
This place covers:
FR2942018
This group covers
FR2447069
This place does not cover:
Energy absorbers; Noise absorbers |
Attention is drawn to the following places, which may be of interest for search:
Counter-acting cavitation in pumps | |
Springs, shock absorbers, means for damping vibration in general | |
Means in valves for absorbing fluid energy |
Attention is drawn to the following places, which may be of interest for search:
Accumulators |
This place covers:
pneumatic reservoirs having a membrane
This place does not cover:
Apparatus for draining |
Attention is drawn to the following places, which may be of interest for search:
Arrangement of draining devices in water supply systems | |
Venting or aerating devices per se |
Attention is drawn to the following places, which may be of interest for search:
Air conditioning in general |
This place covers:
Closing means which can be fixed inside the pipe end
This place does not cover:
In situ expandable members introduced axially into pipes or hoses |
This place covers:
Closing means which can be fixed on the outside of the pipe end
This place does not cover:
In situ expandable caps introduced axially into pipes or hoses |
Attention is drawn to the following places, which may be of interest for search:
Protection against corrosion |
This place covers:
also two half sleeves for covering leaks in pipes from outside the pipe
Attention is drawn to the following places, which may be of interest for search:
Hose-clips for connecting hoses to rigid members |
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 |
This place does not cover:
Means for stopping flow from or in pipes or hoses |
Attention is drawn to the following places, which may be of interest for search:
Pigs or moles for pipes, in general |
Attention is drawn to the following places, which may be of interest for search:
Cleaning of pipes | |
Preventing accumulation in pneumatic conveyors |
This place covers:
General features of pigs or moles for use in pipes or pipe systems
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.
Attention is drawn to the following places, which may be of interest for search:
Tunnel railway systems | |
Conveying articles through pipes or tubes, e.g. tube mail systems |
This place does not cover:
Protection under water | |
Supporting of pipes inside other pipes or sleeves | |
Used in connection with end fittings or hoses | |
Protecting of pipes during transport |
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 |
Attention is drawn to the following places, which may be of interest for search:
For tubular articles not conveying fluid |
This place does not cover:
Protection against fire or sources of extreme heat |
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 |
This place does not cover:
Compound tubes |
Attention is drawn to the following places, which may be of interest for search:
Coatings for thermal insulation | |
Methods or machines for applying coatings |
This place does not cover:
Coatings in the form of a bandage |
Attention is drawn to the following places, which may be of interest for search:
Compositions of coatings |
Attention is drawn to the following places, which may be of interest for search:
Apparatus for covering cores by winding |
Attention is drawn to the following places, which may be of interest for search:
Non-disconnectible joints of coated pipes | |
Screw joints for coated pipes comprising pipes with collars or flanges |
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.
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 | |
Heat insulation of steam engines | |
Heat insulation in rotary piston machines | |
Thermal or acoustic insulation for combustion engines | |
Heat insulation of pumps | |
Thermal insulation of pressure vessels | |
Vessels not under pressure, with provision for insulation | |
For refrigerators |
This place covers:
Arrangements using an air layer or vacuum, air meaning any type of gas
Attention is drawn to the following places, which may be of interest for search:
Pipe supports allowing movement in axial direction |
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 |
This place covers:
insulation for pipes conveying cryogenic fluids
Attention is drawn to the following places, which may be of interest for search:
Means in or on valves for heating or cooling |
This place covers:
US6752176
Attention is drawn to the following places, which may be of interest for search:
Expansion-compensation arrangements for pie-lines |