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Color Curly Brackets (indicating CPC extensions to IPC)

CPC
COOPERATIVE PATENT CLASSIFICATION
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PIPE-LINE SYSTEMS; PIPE-LINES (pumps or compressors F04; fluid dynamics F15D; valves or the like F16K; pipes, laying pipes, supports, joints, branches, repairing, work on the entire line, accessories F16L; steam traps or the like F16T; fluid-pressure electric cables H01B 9/06)
NOTE
-
In this subclass, pipe-line systems are interpreted as systems described in flow sheets as well as arrangements of co-operating elements, the elements per se being covered in the relevant subclasses.

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Pipe-line systems (conveying articles or materials through a pipe- line by means of a fluid carrier B65G 51/00, B65G 53/00; liquids B67D; special devices for transferring liquids from bulk storage containers into vehicles or boats or vice versa, e.g. loading or unloading vehicles or portable containers B67D 7/00; conveying material which has been excavated by a dredger or soil shifter through a pipe-line E02F 7/10; sewer pipe-line systems E03F 3/00; thermal insulation of pipe-lines F16L 59/00; central heating systems F24D)
F17D 1/005
.
{
for a two-phase gas-liquid flow
}
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F17D 1/02
.
for gases or vapours
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F17D 1/04
. .
for distribution of gas
F17D 1/05
. . .
Preventing freezing (by heating F16L 53/00)
F17D 1/06
. .
for steam
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F17D 1/065
. .
Arrangements for producing propulsion of gases or vapours
F17D 1/07
. . .
by compression
F17D 1/075
. . .
by mere expansion from an initial pressure level, e.g. by arrangement of a flow-control valve
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F17D 1/08
.
for liquids or viscous products (water-main or service pipe systems E03B 7/04; domestic hot-water supply systems F24D 17/00)
F17D 1/082
. .
{
for cold fluids, e.g liquified gas (F17D 1/086 takes precedence)
}
F17D 1/084
. .
{
for hot fluids (F17D 1/086 takes precedence)
}
F17D 1/086
. .
{
for explosives
}
F17D 1/088
. .
{
for solids or suspensions of solids in liquids, e.g slurries (F17D 1/086 takes precedence)
}
F17D 1/12
. .
Conveying liquids or viscous products by pressure of another fluid
F17D 1/13
. .
Conveying liquids or viscous products by gravity
F17D 1/14
. .
Conveying liquids or viscous products by pumping
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F17D 1/16
. .
Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
{
(changing the flow or the viscosity by adding a chemical agent C09K 3/00, C10M)
}
F17D 1/17
. . .
by mixing with another liquid,
{
i.e. diluting
}
F17D 1/18
. . .
by heating
F17D 1/20
.
Arrangements or systems of devices for influencing or altering dynamic characteristics of the systems, e.g. for damping pulsations caused by opening or closing of valves (fluid dynamics F15D; damping pulsations in fluids in pipes in general F16L 55/04)
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Arrangements for supervising or controlling working operations
F17D 3/01
.
for controlling, signalling, or supervising the conveyance of a product
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F17D 3/03
.
for controlling, signalling, or supervising the conveyance of several different products following one another in the same conduit, e.g. for switching from one receiving tank to another
F17D 3/05
. .
the different products not being separated (separation of contaminants by distillation B01D 3/00)
F17D 3/08
. .
the different products being separated by "go-devils", e.g. spheres (cleaning devices moved along inside a pipe-line by fluid pressure B08B 9/04;
{
pigs or moles per se, their launching and detection F16L 55/26
}
)
F17D 3/10
.
for taking out the product in the line (sampling in general, examining the physical or chemical properties of materials G01N)
F17D 3/12
.
for injecting a composition into the line
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F17D 3/14
.
for eliminating water (separation of liquids B01D, e.g. B01D 17/00; separation of gases or vapours B01D 53/00)
F17D 3/145
. .
{
in gas pipelines
}
F17D 3/16
.
for eliminating particles in suspension (from liquids by sedimentation B01D 21/00; separation by filtration or otherwise B01D 24/00 to B01D 51/00; centrifugal apparatus B04)
F17D 3/18
.
for measuring the quantity of conveyed product (measuring volume or volume flow, in general G01F)
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Protection or supervision of installations (arrangements for protecting foundations E02D 31/00; protecting pipes from damage or internal or external wear F16L 57/00, against corrosion and scale F16L 58/00; investigation of the fluid-tightness of structures G01M 3/00)
F17D 5/005
.
{
of gas pipelines, e.g. alarm
}
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F17D 5/02
.
Preventing, monitoring, or locating loss
F17D 5/04
. .
by means of a signalling fluid enclosed in a double wall
F17D 5/06
. .
using electric or acoustic means
F17D 5/08
.
Protection of installations or persons from the effects of high voltage induced in the pipe-line (emergency protective circuit arrangements H02H)
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013