IPC 6 English version F16L 11/00-F16L 23/24

F16L01100-F16L02324

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

11/

Hoses, i.e. flexible pipes (hose-like supports for pipes, cables or protective tubing, between relatively movable points F 16 L 3/01; suction-cleaner hoses A 47 L 9/24) [5]

11/

made of fibres or threads, e.g. of textile

11/

made of rubber or flexible plastics

11/

with homogeneous wall (F 16 L 11/11 takes precedence) [2]

11/

with reinforcements embedded in the wall (F 16 L 11/11 takes precedence) [2]

11/

with reinforcements not embedded in the wall (F 16 L 11/11 takes precedence) [2]

11/

with corrugated wall [2]

11/

112

having reinforcements embedded in the wall [5]

11/

115

having reinforcements not embedded in the wall [5]

11/

118

having arrangements for particular purposes, e.g. electrically conducting [5]

11/

with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting (F 16 L 11/11 takes precedence) [2]

11/

127

electrically conducting [5]

11/

133

buoyant [5]

11/

made of rigid material, e.g. metal or hard plastics

11/

corrugated (F 16 L 11/16 takes precedence) [5]

11/

wound from profiled strips or bands

11/

Articulated hoses, e.g. composed of a series of rings

11/

Double-walled hoses [5]

11/

Multi-channel hoses [5]

11/

wound from strips or bands (F 16 L 11/16 takes precedence) [5]

Pipe joints; Hose nipples (special adaptations of pipe joints for use with water-closet bowls E 03 D 11/13) [2]

13/

Non-disconnectible pipe joints, e.g. soldered, adhesive, or caulked joints (joints for rigid pipes of plastics F 16 L 47/00)

13/

007

specially adapted for joining pipes of dissimilar materials [5]

13/

013

Accessories therefor [5]

13/

Welded joints

13/

with arrangements preventing overstressing

13/

with tension-relief of the weld by means of detachable members, e.g. divided tensioning rings, bolts in flanges

13/

Soldered joints

13/

Adhesive or cemented joints

13/

using materials which fill the space between parts of a joint before hardening [2]

13/

with a seal made of lead, caulked packing, or the like

13/

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

13/

the pipe joint consisting of overlapping extremities having mutually co-operating collars [5]

15/

Screw-threaded joints (casing joints used in deep-drilling E 21 B 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

15/

allowing substantial longitudinal adjustment by the use of a long screw-threaded part

15/

with additional sealings [2]

15/

characterised by the shape of the screw-thread [5]

15/

with supplementary elements (F 16 L 15/04 takes precedence) [5]

17/

Joints with packing adapted to sealing by fluid pressure (compensating devices F 16 L 51/00)

17/

with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket

17/

025

the sealing rings having radially directed ribs [5]

17/

having annular axial lips [2]

17/

035

the sealing rings having two lips parallel to each other [5]

17/

with longitudinally split or divided sleeve

17/

with sealing rings arranged between the end surfaces of the pipes or flanges or arranged in recesses in the pipe ends or flanges

17/

067

Plastics sealing rings [6]

17/

073

the sealing rings having two lips parallel to each other [6]

17/

Metal sealing rings [5]

17/

the packing being sealed by the pressure of a fluid other than the fluid in or surrounding the pipe (expansion-compensation arrangements for pipe-lines F 16 L 51/00) [5]

19/

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 (F 16 L 17/00 takes precedence; if using bolts or equivalent connecting means F 16 L 23/00)

19/

Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member

19/

025

the pipe ends having integral collars or flanges [5]

19/

028

the collars or flanges being obtained by deformation of the pipe wall [6]

19/

with flexible sealing rings between the sealing surfaces [2]

19/

using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection

19/

with a rigid pressure ring between the screwed member and the exterior of the flared pipe end [5]

19/

in which radial clamping is obtained by wedging action on non-deformed pipe ends

19/

065

the wedging action being effected by means of a ring [5]

19/

adapted for use in socket or sleeve connections [2]

19/

075

specially adapted for spigot-and-socket joints [5]

19/

with metal rings which bite into the wall of the pipe

19/

the profile of the ring being altered [5]

19/

with additional sealing means [5]

19/

the rings being integral with one of the connecting parts [6]

21/

Joints with sleeve or socket (F 16 L 13/00, F 16 L 17/00, F 16 L 19/00 take precedence)

21/

with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings (F 16 L 21/06, F 16 L 21/08 take precedence; if adjustability is essential F 16 L 27/00)

21/

025

Rolling sealing rings [5]

21/

placed in the socket before connection (F 16 L 21/025 takes precedence) [5]

21/

035

placed around the spigot end before connection (F 16 L 21/025 takes precedence) [5]

21/

in which sealing rings are compressed by axially-movable members

21/

comprising a first ring being placed on a male part and a second ring in the sleeve or socket [6]

21/

with a divided sleeve or ring clamping around the pipe ends (flanged joints F 16 L 23/00; couplings of the quick-acting type F 16 L 37/00)

21/

with additional locking means (F 16 L 21/06 takes precedence; couplings of the quick-acting type F 16 L 37/00)

23/

Flanged joints (F 16 L 13/00, F 16 L 17/00, F 16 L 19/00 take precedence; adjustable joints F 16 L 27/00; for hoses F 16 L 33/00; couplings of the quick-acting type F 16 L 37/00; for double-walled or multi-channel pipes, or pipe assemblies F 16 L 39/00; specially adapted for pipes of brittle material F 16 L 49/00)

23/

the flanges being connected by members tensioned axially (F 16 L 23/12 takes precedence) [2,5]

23/

024

characterised by how the flanges are joined to, or form an extension of, the pipes [5]

23/

026

by welding [6]

23/

028

the flanges being held against a shoulder [5]

23/

032

characterised by the shape or composition of the flanges [5]

23/

036

characterised by the tensioning members, e.g. specially adapted bolts or C-clamps [5]

23/

the flanges being connected by members tensioned in the radial plane (F 16 L 23/12 takes precedence) [2,5]

23/

connected by toggle-action levers (quick acting couplings tightened by toggle-action levers F 16 L 37/20) [5]

23/

connection by tangentially arranged pin and nut [5]

23/

with a pivoting or swinging pin [5]

23/

specially adapted for particular pipes [5]

23/

for rectangular pipes [5]

23/

characterised by the sealing means [5]

23/

the sealing means being rings [6]

23/

made exclusively of metal [6]

23/

made exclusively of a material other than metal [6]

23/

specially adapted for unequal expansion of the parts of the joint [6]

F16L - F16L 9/22

F16L 25/00 - F16L 37/58