Cooperative Patent Classification

CPC Definition - Subclass F17D

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Last Updated Version: 2016.11
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)
Definition statement

This place covers:

The way of operating pipelines for transporting gas or liquids like crude oil. The main subject-matter of this subclass is dealing with preventing of fluid leaks, e.g. gas leaks, monitoring losses of fluids or locating losses of fluid.

Relationships with other classification places

This group deals with the operating of pipelines and does not deal with the construction of pipelines, which is relevant for subclass F16L.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Petroleum, Gas or coke industries, technical gases containing carbon monoxide, fuels, lubricants, peat

Pumps or compressors

Influencing flow of fluids in a pipeline

Valves or the like

Constructional details of pipes

Laying or reclaiming pipes; Repairing or joining pipes on or under water

Supports for pipes, cables or protective tubing

Thermal insulation of pipe-lines

Steam traps or the like

Central heating systems

Fluid-pressure electric cables

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)
Definition statement

This place covers:

The way of conveying fluids, like two phase gas liquid mixtures, gas, liquids or viscous products, slurries comprising solid particles within a fluid. This group also includes systems to reduce friction and improve flow in pipe lines.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Conveying articles or materials through a pipe-line by means of a fluid carrier

Dispensing, delivering transporting liquids

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

Conveying material which has been excavated by a dredger or soil shifter through a pipe-line

Water main or service pipe systems

Public or like main pipe systems

Domestic or like local pipe systems

Sewer pipe-line systems

Heating or cooling pipes or pipe systems

Domestic hot-water supply systems

Arrangements for supervising or controlling working operations
Definition statement

This place covers:

  • Supervision and control of the conveyance of one or several products.
  • Arrangements for sampling fluid from the pipe-line or for injecting a composition into the pipe-line.
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Separation in general

Separation of liquids

Separation of gases or vapours

Using cleaning devices introduced into and moved along the pipes by fluid pressure

Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means and their launching and detection

Measuring volume or flow

Sampling and preparing specimens for investigation

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)
Definition statement

This place covers:

The prevention of gas leaks, or the monitoring of losses of fluids or the locating of losses of fluid.

Protection or monitoring of installation or pipelines

Protection of installations or persons from the effects of high voltage induced in the pipe-line

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Arrangements for protecting foundations

Protecting pipes from damage or internal or external wear

Protection against corrosion or scale

Investigation of the fluid-tightness of structures