IPC 6 English version F16L 39/00-F16L 101:70

F16L03900-F16L10170

SECTION F– MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F 16

ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL

F 16 L

PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL

39/

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

39/

for hoses

39/

allowing adjustment or movement

41/

Branching pipes; Joining pipes to walls (F 16 L 39/00 takes precedence; connections not designed for conveying fluid F 16 B 9/00; joints suitable for connecting together pipe ends, see the relevant groups)

41/

Branch units, e.g. made in one piece, welded, riveted

41/

comprising junction pieces for four or more pipe members [5]

41/

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)

41/

making use of attaching means embracing the pipe

41/

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 (F 16 L 41/02 takes precedence) [2]

41/

the extremity of the pipe being screwed into the wall [5]

41/

using attaching means embracing the pipe [5]

41/

by screwing an intermediate part against the inside or outside of the wall [5]

41/

the branch pipe comprising fluid cut-off means [5]

43/

Bends; Siphons (with cleaning apertures F 16 L 45/00; siphons for water-closets E 03 D 11/18; siphons in general F 04 F 10/00)

43/

adapted to make use of special securing means

45/

Pipe units with cleaning aperture and closure therefor

47/

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

47/

Welded joints; Adhesive joints

47/

with a swivel nut or collar engaging the pipe [2]

47/

with sleeve or socket formed by or in the pipe end [2]

49/

Connecting arrangements, e.g. joints, specially adapted for pipes of brittle material, e.g. glass, earthenware

49/

Joints with a sleeve or socket [5]

49/

Flanged joints [5]

51/

Expansion-compensation arrangements for pipe-lines (telescopic pipes F 16 L 27/12)

51/

making use of a bellows or an expansible folded or corrugated tube

51/

comprising two or more bellows [5]

51/

making use of bends, e.g. lyre-shaped

53/

Heating or cooling pipes or pipe systems (preventing freezing of pipes, thawing frozen pipes E 03 B 7/12, E 03 B 7/14; pipe-line systems, pipe-lines F 17 D)

55/

Devices or appurtenances for use in, or in connection with, pipes or pipe systems (the preceding groups and groups F 16 L 57/00, F 16 L 59/00 take precedence; repairing or joining pipes on or under water F 16 L 1/26; nozzles B 05 B; cleaning of pipes B 08 B 9/02; devices for preventing bursting of water pipes by freezing E 03 B 7/10; for domestic plumbing installations E 03 C 1/00; arrangements for sealing leaky tubes or conduits of heat-exchangers F 28 F 11/00)

55/

Energy absorbers; Noise absorbers (in valves F 16 K 47/00)

55/

027

Throttle passages (influencing fluid flow F 15 D 1/00; control of fluid flow G 05 D 7/00) [5]

55/

033

Noise absorbers (F 16 L 55/027 takes precedence) [5]

55/

Devices damping pulsations or vibrations in fluids

55/

045

specially adapted to prevent or minimise the effects of water hammer [5]

55/

Buffers therefor (accumulators F 15 B 1/04) [5]

55/

055

Valves therefor [5]

55/

Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining (arrangement of draining devices in water-supply systems E 03 B 7/08; apparatus for draining F 16 K, F 16 T; venting or aerating devices per se F 16 K 24/00) [2]

55/

Air-conditioning, e.g. de-watering, in pneumatic systems (in general F 24)

55/

Means for stopping flow from or in pipes or hoses (F 16 L 29/00, F 16 L 37/28 take precedence; valves F 16 K)

55/

105

Closing devices introduced radially into the pipe or hose [5]

55/

Plugs [5]

55/

115

Caps [5]

55/

by introducing into the pipe a member expandable in situ (inflatable cut-off valves F 16 K 7/10)

55/

124

introduced radially into the pipe or hose [5]

55/

128

introduced axially into the pipe or hose [5]

55/

132

the closure device being a plug fixed by radially deforming the packing [5]

55/

136

the closure device being a plug fixed by radially expanding or deforming a split ring, hooks or the like [5]

55/

Devices for covering leaks in pipes or hoses, e.g. hose-menders

55/

162

from inside the pipe [5]

55/

165

a pipe being inserted in the damaged section [5]

55/

168

from outside the pipe [5]

55/

by means of rings, bands or sleeves pressed against the outside surface of the pipe or hose (hose-clips for connecting hoses to rigid members F 16 L 33/02) [5]

55/

172

the ring, band or sleeve being tightened by a tangentially arranged threaded pin and a nut [5]

55/

175

by using materials which fill a space around the pipe before hardening [5]

55/

178

by clamping an outer gasket against a joint with sleeve or socket [5]

55/

Appliances for use in repairing pipes (F 16 L 55/10 takes precedence)

55/

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

55/

Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means (tunnel railway systems B 61 B 13/10; conveying articles through pipes or tubes, e.g. tube mail systems, B 65 G 51/00) [5]

Notes

(1)

Pigs or moles specially adapted for particular applications are classified in the relevant places for the applications, e.g.

–

stopping flow from or in pipes or hoses F 16 L 55/12;

–

repairing pipes F 16 L 55/18;

–

applying liquids or other fluent materials to the inside of tubes B 05 C 7/08;

–

cleaning pipes or tubes or systems of pipes or tubes B 08 B 9/02;

–

welding or cutting B 23 K 37/02;

–

earth drilling E 21 B;

–

cleaning chimneys F 23 J 3/02;

–

cleaning internal or external surfaces of heat-exchange or heat-transfer conduits F 28 G;

–

measuring, testing G 01;

–

inspection of vessels in nuclear reactors G 21 C 17/003;

–

inspection or maintenance of pipe-lines or tubes in nuclear installations G 21 C 17/017;

–

installing electric, or combined optical and electric, cables or lines H 02 G. [5]

(2)

In groups F 16 L 55/26 to F 16 L 55/48, it is desirable to add the indexing codes of groups F 16 L 101:00 to F 16 L 101:70. The indexing codes should be unlinked. [6]

55/

Constructional aspects [6]

55/

of the propulsion means, e.g. towed by cables [6]

55/

being self-contained [6]

55/

the pig or mole being moved step by step [6]

55/

jet driven [6]

55/

driven by fluid pressure [6]

55/

of the body [6]

55/

gelled or degradable [6]

55/

expandable [6]

55/

Launching or retrieval of pigs or moles [6]

55/

Indicating the position of the pig or mole in the pipe or conduit [6]

57/

Protection of pipes or objects of similar shape against external or internal damage or wear (supporting of pipes inside other pipes or sleeves F 16 L 7/00; used in connection with end fittings of hoses F 16 L 35/00; protection thereof during transport B 65 D, e.g. B 65 D 59/00)

58/

Protection of pipes or pipe fittings against corrosion or incrustation (supporting of pipes inside other pipes or sleeves F 16 L 7/00; compound tubes F 16 L 9/14; cleaning pipes or tubes B 08 B 9/02)

58/

by means of internal or external coatings (coatings for thermal insulation F 16 L 59/00; methods or machines for applying coatings, see the relevant places, e.g. B 28 B 21/94) [2]

58/

Coatings characterised by the materials used (F 16 L 58/16 takes precedence; compositions, see the relevant classes, e.g. C 04 B) [2]

58/

by cement, concrete, or the like [2]

58/

by metal [2]

58/

by rubber or plastics [2]

58/

by tar or bitumen [2]

58/

by ceramic or vitreous materials [2]

58/

the coating being in the form of a bandage (apparatus for covering cores by winding B 65 H 81/00) [2]

58/

specially adapted for pipe fittings [2]

59/

Thermal insulation in general (heat, sound insulation in buildings E 04 B; heat insulation of steam engines F 01 B 31/08; heat insulation in rotary piston machines or engines F 01 C 21/06; heat insulation of pumps F 04 C 29/04; thermal insulation of pressure vessels F 17 C 1/12; vessels not under pressure, with provision for insulation F 17 C 3/02)

59/

Shape or form of insulating materials, with or without coverings integral with the insulating materials (chemical aspects, see the relevant classes)

59/

Arrangements using dry fillers, e.g. using slag wool

59/

in prefabricated shells or covers [2]

59/

Arrangements using an air layer or vacuum

59/

Means for preventing radiation, e.g. with metal foil

59/

Bandages or covers for the protection of the insulation, e.g. against the influence of the environment or against mechanical damage (integral with insulating materials F 16 L 59/02)

59/

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

59/

Arrangements for the insulation of pipes or pipe systems (F 16 L 59/02 to F 16 L 59/12 take precedence)

59/

147

the insulation being located inwardly of the outer surface of the pipe [5]

59/

153

for flexible pipes [5]

59/

Arrangements specially adapted to local requirements at flanges, junctions, valves, or the like (means in or on valves for heating or cooling F 16 K 49/00)

59/

adapted for joints [5]

59/

for non-disconnectable joints [5]

59/

adapted for bends [5]

Indexing scheme associated with groups F 16 L 55/26 to F 16 L 55/48, relating to uses and applications of pigs or moles. The indexing codes should be unlinked. [6]

Note

Attention is drawn to Chapter IV of the Guide which sets forth the rules concerning the application and presentation of the different types of indexing code. [6]

101:

Uses or applications of pigs or moles [6]

101:

Treating the inside of pipes [6]

101:

Cleaning [6]

101:

Drying [6]

101:

Coating by application of fluent materials, e.g. painting [6]

101:

Lining other than coating [6]

101:

Expelling gases or fluids [6]

101:

Inspecting, measuring or testing [6]

101:

Separating transported fluids [6]

101:

Pulling cables or the like [6]

101:

Stopping leaks [6]

101:

Drill-well operations [6]

F16L 25/00 - F16L 37/58