IPC 7 English version F16L 25/00-F16L 37/62

IPC ⁷ English version

F16L 11/00 - F16L 23/24

F16L02500-F16L03762

F16L 39/00 - F16L 55/48

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

25/

Construction or details of pipe joints not provided for in, or of interest apart from, groups F16L 13/00 to 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)

25/

specially adapted for realising electrical conduction between the two pipe ends of the joint or between parts thereof (electrically-conductive connections between or with tubular conductors H01R 4/60) [7]

25/

specially adapted for electrically insulating the two pipe ends of the joint from each other [2]

25/

in non-disconnectable pipe joints [7]

25/

comprising a collar or ring having a threaded pin rigid with the pipe-encircling member [5]

25/

comprising radial locking means [5]

25/

in the form of screws, nails or the like [6]

25/

Sleeveless joints between two pipes, one being introduced into the other [7]

25/

Joints for pipes being spaced apart axially [7]

25/

Joints for pipes of different diameters or cross-section [7]

27/

Adjustable joints; Joints allowing movement (of the quick-acting type F16L 37/50; for double-walled or multi-channel pipes or pipe assemblies F16L 39/04; swivel joints in hose lines used for flushing boreholes E21B 21/02) [5]

27/

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

27/

with partly-spherical engaging surfaces

27/

047

held in place by a screwed member having an internal spherical surface [5]

27/

053

held in place by bolts passing through flanges [5]

27/

with special sealing means between the engaging surfaces

27/

067

the sealing means being actuated by the medium pressure [5]

27/

073

one of the cooperating surfaces forming the sealing means [5]

27/

allowing adjustment or movement only about the axis of one pipe

27/

087

Joints with radial fluid passages [6]

27/

093

of the "banjo" type, i.e. pivoting right-angle couplings [6]

27/

comprising a flexible connection only

27/

103

in which a flexible element, e.g. a rubber-metal laminate, which undergoes constraints consisting of shear and flexure, is sandwiched between partly curved surfaces [6]

27/

107

the ends of the pipe being interconnected by a flexible sleeve [5]

27/

108

the sleeve having the form of a bellows with only one corrugation [6]

27/

the sleeve having the form of a bellows with multiple corrugations [6]

27/

111

the bellows being reinforced [6]

27/

113

the ends of the pipe being interconnected by a rigid sleeve [5]

27/

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

29/

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

29/

with a cut-off device in one of the two pipe ends, the cut-off device being automatically opened when the coupling is applied [5]

29/

with a cut-off device in each of the two pipe ends, the cut-off devices being automatically opened when the coupling is applied [5]

31/

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

31/

for branching hoses [6]

33/

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 (connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics F16L 47/00)

Note

Groups F16L 33/01 and F16L 33/26 take precedence over other subgroups [7]

33/

specially adapted for hoses having a multi-layer wall [2]

33/

Hose-clips

33/

025

tightened by deforming radially extending loops or folds [7]

33/

Self-locking elastic clips [7]

33/

035

fixed by means of teeth or hooks [7]

33/

tightened by tangentially-arranged threaded pin and nut

33/

in which the threaded pin is rigid with the hose-encircling member

33/

in which a worm coacts with a part of the hose-encircling member that is toothed like a worm-wheel

33/

with a substantially-radial tightening member

33/

with a pivoted or swinging tightening or securing member, e.g. toggle lever

33/

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

33/

with sealing or securing means using fluid pressure

33/

characterised by the use of additional sealing means

33/

Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members

33/

207

only a sleeve being contracted on the hose [5]

33/

213

only a sleeve being expanded inside the hose [5]

33/

with means not mentioned in the preceding groups for gripping the hose between inner and outer parts

33/

the outer parts being segmented, the segments being pressed against the hose by tangentially arranged members [2]

33/

with parts screwed directly on or into the hose (F16L 33/22 takes precedence)

33/

specially adapted for hoses made of metal

33/

for hoses with one end terminating in a radial flange or collar [5]

33/

comprising parts inside the hoses only (F16L 33/24 takes precedence) [7]

33/

comprising parts outside the hoses only (F16L 33/24 takes precedence) [7]

33/

with bonding obtained by vulcanisation, gluing, melting, or the like [7]

35/

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

37/

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)

37/

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

37/

with an elastic outer part pressing against an inner part by reason of its elasticity (with locking members F16L 37/08)

37/

tightened by the pressure of a mechanical organ [5]

37/

tightened by fluid pressure

37/

in which the connection between abutting or axially-overlapping ends is maintained by locking members (F16L 37/22 to F16L 37/26 take precedence)

37/

084

combined with automatic locking [5]

37/

086

by means of latching members pushed radially by spring-like elements [7]

37/

088

by means of a split elastic ring [5]

37/

091

by means of a ring provided with teeth or fingers [7]

37/

092

by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector [5]

37/

096

by means of hooks hinged about an axis [5]

37/

098

by means of flexible hooks [7]

37/

using a rotary external sleeve or ring on one part

37/

107

Bayonet-type couplings [7]

37/

113

the male part having lugs on its periphery penetrating into the corresponding slots provided in the female part [7]

37/

using hooks, pawls, or other movable or insertable locking members (F16L 37/084 takes precedence) [5]

37/

124

using bolts, fixed to a flange, which are able to tilt in slots of another flange, and being maintained there by the tightening of nuts [7]

37/

127

using hooks hinged about an axis [5]

37/

133

using flexible hooks [5]

37/

138

using an axially movable sleeve [7]

37/

Joints secured by inserting between mating surfaces an element, e.g. a piece of wire, a pin, a chain

37/

the element being a wedge [7]

37/

Joints tightened by the action of wedge-shaped hinged hooks

37/

Joints tightened by eccentrics or rotatable cams

37/

Joints tightened by toggle-action levers

37/

in which the connection is maintained by means of balls, rollers, or helical springs under radial pressure between the parts

37/

by means of balls [5]

37/

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

37/

244

the coupling being co-axial with the pipe [5]

37/

248

Bayonet-type couplings [5]

37/

252

the male part having lugs on its periphery penetrating into the corresponding slots provided in the female part [5]

37/

256

the coupling not being coaxial with the pipe [5]

37/

in which the connection is made by transversely moving the parts together, with or without their subsequent rotation

37/

with fluid cut-off means

37/

with fluid cut-off means in each of two pipe-end fittings [5]

37/

at least one of two lift valves being opened automatically when the coupling is applied [5]

37/

the lift valves being of the ball type [7]

37/

at least one of the lift valves being of the sleeve type, i.e. a sleeve being telescoped over an inner cylindrical wall [5]

37/

at least one of the valves having an axial bore communicating with lateral apertures [7]

37/

with two lift valves being actuated to initiate the flow through the coupling after the two coupling parts are locked against withdrawal [5]

37/

367

with two gate valves or sliding valves [7]

37/

373

with two taps or cocks [7]

37/

with fluid cut-off means in only one of two pipe-end fittings [5]

37/

with a lift valve being opened automatically when the coupling is applied [5]

37/

407

the lift valve being of the ball type [7]

37/

413

the lift valve being of the sleeve type, i.e. a sleeve being telescoped over an inner cylindrical wall [7]

37/

the valve having an axial bore communicating with lateral apertures [5]

37/

with one lift valve being actuated to initiate the flow through the coupling after the two coupling parts are locked against withdrawal [5]

37/

with a gate valve or sliding valve [5]

37/

with a tap or cock [7]

37/

for fastening a pipe on the end of a tap [5]

37/

adjustable; allowing movement of the parts joined [5]

37/

Universal joints, i.e. with a mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction [5]

37/

allowing adjustment or movement only about the axis of one pipe [7]

37/

for pipes under pressure which are supported only on one side [5]

37/

for double-walled or multi-channel pipes [5]

37/

the extremities of the two halves of the joint being pressed against each other without being locked in position [5]

37/

with plug and fixed wall housing [7]

37/

pneumatically or hydraulically actuated [7]

F16L 11/00 - F16L 23/24

F16L 39/00 - F16L 55/48