F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
ENGINEERING IN GENERAL
 F16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
 F16L
PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES OR CABLES; MEANS FOR THERMAL INSULATION IN GENERAL (pipe systems F17D)
 F16L

Note(s)

In this subclass, the following terms are used with the meanings indicated:

  • "pipes" includes all pipes and tubes not specially adapted to purposes other than that of conveying fluids, materials, or objects. A pipe may or may not be flexible;
  • "hose" means a pipe that has flexibility as an essential characteristic.

 F16L 1/00
Laying or reclaiming pipes (soldering or welding B23K; lifting-gear and load-engaging elements B66; hydraulic installations, soil drainage E02B; excavations or underwater constructions E02D; conduits made of concrete in situ E02D 29/10; machines for digging trenches in combination with pipe-assembly E02F; laying sewer pipes E03F 3/06; tunnelling E21D; laying electric cables H02G; making special pipe joints, see the relevant groups for the joints)  [2]
 F16L 1/02
·  laying pipes in the ground (F16L 1/04 takes precedence)  [2]
 F16L 1/04
·  Laying pipes under water (vessels or like floating structures adapted for special purposes, e.g. for pipe-laying, B63B 35/02)  [2]
 F16L 3/00 - 
F16L 7/00
Supporting
 F16L 3/00
Hangers or supports for pipes or cables (bridges for supporting pipe-lines E01D 17/00; pipe or rod clamps for scaffolding E04G 7/00; staples or hooks having a part for entering a wall or other support F16B 15/00, F16B 45/00)
 F16L 3/02
·  partly surrounding the pipe
 F16L 3/04
·  ·  pressing the pipe against a wall or other support
 F16L 3/06
·  ·  with supports for wires
 F16L 3/08
·  Brackets substantially surrounding the pipe
 F16L 3/10
·  ·  Divided brackets, i.e. with two members engaging the pipe
 F16L 3/12
·  ·  comprising a member substantially surrounding the pipe
 F16L 3/14
·  Hangers in the form of bands or chains
 F16L 3/16
·  with special provision allowing movement of the pipe (for pipes supported in outer sleeve F16L 7/00)
 F16L 3/18
·  ·  allowing movement in axial direction
 F16L 3/20
·  ·  allowing movement in transverse direction; Spring-systems therefor
 F16L 3/22
·  specially adapted to supporting a number of parallel pipes
 F16L 3/24
·  with special member for attachment to profiled girders
 F16L 5/00
Devices for use where pipes pass through walls or partitions
 F16L 5/02
·  sealing the pipe in the wall or partition
 F16L 7/00
Supporting of pipes 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
 F16L 9/00 - 
F16L 11/00
Pipes
 F16L 9/00
Rigid pipes
 F16L 9/02
·  of metal (F16L 9/16-F16L 9/22 take precedence; finned pipes F28F)
 F16L 9/04
·  ·  Reinforced pipes
 F16L 9/06
·  ·  Corrugated pipes
 F16L 9/08
·  of concrete, cement, or asbestos cement, with or without reinforcement (F16L 9/16-F16L 9/22 take precedence)
 F16L 9/10
·  of glass or ceramics, e.g. clay, clay tile, porcelain (F16L 9/16-F16L 9/22 take precedence)
 F16L 9/12
·  of plastics with or without reinforcement (F16L 9/16-F16L 9/22 take precedence)
 F16L 9/14
·  Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups (F16L 9/16-F16L 9/22 take precedence)
 F16L 9/16
·  wound from sheets or strips, with or without reinforcement
 F16L 9/18
·  Double-walled pipes; Multi-channel pipes or pipe assemblies (joints therefor F16L 39/00)
 F16L 9/19
·  ·  Multi-channel pipes or pipe assemblies  [4]
 F16L 9/20
( transferred to F16L 9/19 )
 F16L 9/22
·  Pipes composed of a plurality of segments
 F16L 11/00
Hoses, i.e. flexible pipes (suction-cleaner hoses A47L 9/24)
 F16L 11/02
·  made of fibres or threads, e.g. of textile
 F16L 11/04
·  made of rubber or flexible plastics
 F16L 11/06
·  ·  with homogeneous wall (F16L 11/11 takes precedence)  [2]
 F16L 11/08
·  ·  with reinforcements embedded in the wall (F16L 11/11 takes precedence)  [2]
 F16L 11/10
·  ·  with reinforcements not embedded in the wall (F16L 11/11 takes precedence)  [2]
 F16L 11/11
·  ·  with corrugated wall  [2]
 F16L 11/12
·  ·  with arrangements for special purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting (F16L 11/11 takes precedence)  [2]
 F16L 11/14
·  made of rigid material, e.g. metal or hard plastics
 F16L 11/16
·  ·  wound from profiled strips or bands
 F16L 11/18
·  ·  Articulated hoses, e.g. composed of a series of rings
 F16L 13/00 - 
F16L 49/00
Pipe joints; Hose nipples (special adaptations of pipe joints for use with water-closet bowls E03D 11/13)  [2]
 F16L 13/00
Non-disconnectible pipe joints, e.g. soldered, adhesive, or caulked joints (joints for rigid pipes of plastics F16L 47/00)
 F16L 13/02
·  Welded joints
 F16L 13/04
·  ·  with arrangements preventing overstressing
 F16L 13/06
·  ·  ·  with tension-relief of the weld by means of detachable members, e.g. divided tensioning rings, bolts in flanges
 F16L 13/08
·  Soldered joints
 F16L 13/10
·  Adhesive or cemented joints
 F16L 13/11
·  ·  using materials which fill the space between parts of a joint before hardening  [2]
 F16L 13/12
·  with a seal made of lead, caulked packing, or the like
 F16L 13/14
·  made by plastically deforming the material of the pipe, e.g. by flanging, rolling
 F16L 15/00
Screw-threaded joints (casing joints used in deep-drilling E21B 17/08; joints sealed primarily by means other than engagement of screw-threads, see the relevant groups characterised by the sealing arrangements); Forms of screw-threads for such joints
 F16L 15/02
·  allowing substantial longitudinal adjustment by the use of a long screw-threaded part
 F16L 15/04
·  with additional sealings  [2]
 F16L 17/00
Joints with packing adapted to sealing by fluid pressure (compensating devices F16L 51/00; sealings tightened by external pressure, inflatable packings F16J 15/00)
 F16L 17/02
·  with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket
 F16L 17/03
·  ·  having annular axial lips  [2]
 F16L 17/04
·  ·  with longitudinally split or divided sleeve
 F16L 17/06
·  with sealing rings arranged between the end surfaces of the pipes or flanges or arranged in recesses in the pipe ends or flanges
 F16L 19/00
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 (F16L 17/00 takes precedence; if using bolts or equivalent connecting means F16L 23/00)
 F16L 19/02
·  Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
 F16L 19/03
·  ·  with flexible sealing rings between the sealing surfaces  [2]
 F16L 19/04
·  using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
 F16L 19/06
·  in which radial clamping is obtained by wedging action on non-deformed pipe ends
 F16L 19/07
·  ·  adapted for use in socket or sleeve connections  [2]
 F16L 19/08
·  with metal rings which bite into the wall of the pipe
 F16L 21/00
Joints with sleeve or socket (F16L 13/00, F16L 17/00, F16L 19/00 take precedence)
 F16L 21/02
·  with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings (F16L 21/06, F16L 21/08 take precedence; if adjustability is essential F16L 27/00)
 F16L 21/04
·  ·  in which sealing rings are compressed by axially-movable members
 F16L 21/06
·  with a divided sleeve or ring clamping around the pipe ends (flanged joints F16L 23/00; couplings of the quick-acting type F16L 37/00)
 F16L 21/08
·  with additional locking means (F16L 21/06 takes precedence; couplings of the quick-acting type F16L 37/00)
 F16L 23/00
Flanged joints (F16L 13/00, F16L 17/00, F16L 19/00 take precedence; adjustable joints F16L 27/00; couplings of the quick-acting type F16L 37/00)
 F16L 23/02
·  the flanges being connected by members tensioned axially  [2]
 F16L 23/04
·  the flanges being connected by members tensioned in the radial plane  [2]
 F16L 25/00
Constructive types of pipe joints not provided for in groups F16L 13/00-F16L 23/00 (adjustable joints F16L 27/00; couplings of the quick-acting type F16L 37/00; specially adapted to be made of plastics or to be used with pipes made of plastics F16L 47/00)
 F16L 25/02
·  Electrically insulating joints or couplings (F16L 47/00 takes precedence; insulating bodies in general H01B)  [2]
 F16L 27/00
Adjustable joints; Joints allowing movement (for double-walled or multi-channel pipes or pipe assemblies F16L 39/04)
 F16L 27/02
·  Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
 F16L 27/04
·  ·  with partly-spherical engaging surfaces
 F16L 27/06
·  ·  ·  with special sealing means between the engaging surfaces
 F16L 27/08
·  allowing adjustment or movement only about the axis of one pipe
 F16L 27/10
·  comprising a flexible connection only
 F16L 27/12
·  allowing substantial longitudinal adjustment or movement (by use of screw-thread F16L 15/02)
 F16L 29/00
Joints with fluid cut-off means (quick-acting joints with cut-off means F16L 37/28)
 F16L 31/00
Arrangements for connecting hoses to one another or to flexible sleeves (F16L 33/00 takes precedence)
 F16L 33/00
Arrangements for connecting hoses to rigid members (hand tools for inserting fittings into hoses B25B 27/10); Rigid hose-connectors, i.e. single members engaging both hoses
 F16L 33/01
·  adapted for hoses having a multi-layer wall  [2]
 F16L 33/02
·  Hose-clips
 F16L 33/04
·  ·  tightened by tangentially-arranged threaded pin and nut
 F16L 33/06
·  ·  ·  in which the threaded pin is rigid with the hose-encircling member
 F16L 33/08
·  ·  in which a worm coacts with a part of the hose-encircling member that is toothed like a worm-wheel
 F16L 33/10
·  ·  with a substantially-radial tightening member
 F16L 33/12
·  ·  with a pivoted or swinging tightening or securing member, e.g. toggle lever
 F16L 33/14
·  ·  with a taping-bolt, i.e. winding up the end of the hose-encircling member
 F16L 33/16
·  with sealing or securing means using fluid pressure
 F16L 33/18
·  characterised by the use of additional sealing means
 F16L 33/20
·  Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members
 F16L 33/22
·  with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
 F16L 33/23
·  ·  the outer parts being segmented, the segments being pressed against the hose by wedging action  [2]
 F16L 33/24
·  with parts screwed directly on or into the hose (F16L 33/22 takes precedence)
 F16L 33/26
·  specially adapted for hoses made of metal
 F16L 35/00
Special arrangements used in connection with end fittings of hoses, e.g. safety or protecting devices
 F16L 37/00
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)
 F16L 37/02
·  in which the connection is maintained only by friction of the parts being joined (F16L 37/22 takes precedence)
 F16L 37/04
·  ·  with an elastic outer part pressing against an inner part by reason of its elasticity (with locking members F16L 37/08)
 F16L 37/06
·  ·  ·  tightened by fluid pressure
 F16L 37/08
·  in which the connection between abutting or axially-overlapping ends is maintained by locking members (F16L 37/22-F16L 37/26 take precedence)
 F16L 37/10
·  ·  using a rotary external sleeve or ring on one part
 F16L 37/12
·  ·  using hooks, pawls, or other movable or insertable locking members
 F16L 37/14
·  ·  ·  Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain
 F16L 37/16
·  ·  ·  Joints tightened by the action of wedge-shaped hinged hooks
 F16L 37/18
·  ·  ·  Joints tightened by eccentrics or rotatable cams
 F16L 37/20
·  ·  ·  Joints tightened by toggle-action levers
 F16L 37/22
·  in which the connection is maintained by means of balls, rollers, or helical springs under radial pressure between the parts
 F16L 37/24
·  in which the connection is made by inserting one member axially into the other and rotating it to a limited extent, e.g. with bayonet-action
 F16L 37/26
·  in which the connection is made by transversely moving the parts together, with or without their subsequent rotation
 F16L 37/28
·  with fluid cut-off means
 F16L 39/00
Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
 F16L 39/02
·  for hoses
 F16L 39/04
·  allowing adjustment or movement
 F16L 41/00
Branching pipes; Joining pipes to walls (F16L 39/00 takes precedence; connections not designed for conveying fluid F16B 9/00; joints suitable for connecting together pipe ends, see the relevant groups)
 F16L 41/02
·  Branch units, e.g. made in one piece, welded, riveted
 F16L 41/04
·  Tapping pipe walls, i.e. making connections through the walls of pipes while they are carrying fluids; Fittings therefor (apparatus or operations relating to metal-working steps, see the relevant classes for metal-working)
 F16L 41/06
·  ·  making use of attaching means embracing the pipe
 F16L 41/08
·  Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe (F16L 41/02 takes precedence)  [2]
 F16L 43/00
Bends; Siphons (with cleaning apertures F16L 45/00; siphons in general F04F 10/00)
 F16L 43/02
·  adapted to make use of special securing means
 F16L 45/00
Pipe units with cleaning aperture and closure therefor
 F16L 47/00
Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
 F16L 47/02
·  Welded joints; Adhesive joints
 F16L 47/04
·  with a swivel nut or collar engaging the pipe  [2]
 F16L 47/06
·  with sleeve or socket formed by or in the pipe end  [2]
 F16L 49/00
Connecting arrangements specially adapted for pipes of brittle material, e.g. glass, earthenware
 F16L 51/00
Expansion-compensation arrangements for pipe-lines (telescopic pipes F16L 27/12)
 F16L 51/02
·  making use of a bellows or an expansible folded or corrugated tube
 F16L 51/04
·  making use of bends, e.g. lyre-shaped
 F16L 53/00
Heating or cooling pipes or pipe systems (preventing freezing of pipes, thawing frozen pipes E03B 7/12, E03B 7/14)
 F16L 55/00
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; nozzles B05B; cleaning of pipes B08B 9/02; devices for preventing bursting of water pipes by freezing E03B 7/10; for domestic plumbing installations E03C 1/00)
 F16L 55/02
·  Energy absorbers; Noise absorbers (in valves F16K 47/00)
 F16L 55/04
·  Devices damping pulsations or vibrations in fluids
 F16L 55/07
·  Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining (arrangement of draining devices in water-supply systems E03B 7/08; apparatus for draining F16K, F16T; venting or aerating devices per se F16K 24/00)  [2]
 F16L 55/09
·  Air-conditioning, e.g. de-watering, in pneumatic systems (in general F24)
 F16L 55/10
·  Means for stopping flow from or in pipes or hoses (F16L 29/00, F16L 37/28 take precedence; valves F16K)
 F16L 55/12
·  ·  using a member which is expanded in place
 F16L 55/14
·  ·  Means, e.g. clamps, for flattening hoses
 F16L 55/16
·  ·  Devices for covering leaks in pipes or hoses, e.g. hose-menders
 F16L 55/18
·  Appliances for use in repairing pipes (F16L 55/10 takes precedence)
 F16L 55/24
·  Preventing accumulation of dirt or other matter in pipes, e.g. by traps, by strainers
 F16L 57/00
Protection of pipes or objects of similar shape against external or internal damage or wear (supporting of pipes inside other pipes or sleeves F16L 7/00; protection thereof during transport B65D, e.g. B65D 59/00)
 F16L 58/00
Protection of pipes or pipe fittings against corrosion or incrustation (supporting of pipes inside other pipes or sleeves F16L 7/00; cleaning pipes or tubes B08B 9/02; painting, surface treatment B44D; prevention of corrosion or incrustation in general C23F, e.g. cathodic or anodic protection C23F 13/00)
 F16L 58/02
·  by means of internal or external coatings (coatings for thermal insulation F16L 59/00; methods or machines for applying coatings, see the relevant places, e.g. B28B 21/00)  [2]
 F16L 58/04
·  ·  Coatings characterised by the materials used (F16L 58/16 takes precedence; compositions, see the relevant classes, e.g. C04B)  [2]
 F16L 58/06
·  ·  ·  by cement, concrete, or the like  [2]
 F16L 58/08
·  ·  ·  by metal  [2]
 F16L 58/10
·  ·  ·  by rubber or plastics  [2]
 F16L 58/12
·  ·  ·  by tar or bitumen  [2]
 F16L 58/14
·  ·  ·  by ceramic or vitreous materials  [2]
 F16L 58/16
·  ·  the coating being in the form of a bandage (apparatus for covering cores by winding B65H 81/00)  [2]
 F16L 58/18
·  specially adapted for pipe fittings  [2]
 F16L 59/00
Thermal insulation not adapted to particular purposes provided for in other classes (in buildings E04B 1/62)
 F16L 59/02
·  Shape or form of insulating materials (chemical aspects, see the relevant classes)
 F16L 59/04
·  Arrangements using dry fillers, e.g. using slag wool
 F16L 59/05
·  ·  in prefabricated shells or covers  [2]
 F16L 59/06
·  Arrangements using an air layer or vacuum
 F16L 59/08
·  Means for preventing radiation, e.g. with metal foil
 F16L 59/10
·  Bandages for insulation
 F16L 59/12
·  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
 F16L 59/14
·  Arrangements for the insulation of pipes or pipe systems (F16L 59/02-F16L 59/12 take precedence)
 F16L 59/16
·  ·  Arrangements specially adapted to local requirements at flanges, junctions, valves, or the like