VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25)

Introduced: September 1968

Description

This subclass encompasses the design, construction, and operation of pressure vessels and containers for storing gases in compressed, liquefied, or solidified states, as well as fixed-capacity gas-holding equipment. It covers the structural aspects of vessels, materials, safety features, internal components, and methods for filling and discharging such containers. Applications include industrial gas cylinders, cryogenic tanks, aerosol containers, and permanent or semi-permanent gas storage installations used in manufacturing, transportation, medical, and chemical industries.

Title

Titles differ between systems:

IPC: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES

CPC: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25)

Full Title

Full titles differ between systems:

IPC:

VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES

CPC:

VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25)

CPC subdivides this area 3x more granularly than IPC with 12 additional codes.

12 codes are CPC-only extensions.

Note: 12 CPC extensions are marked as secondary classification only.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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F17C 1/00 Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge (pressurised apparatus for purposes other than storage, see the relevant subclasses such as A62C, B05B; associated with vehicles, see the appropriate subclass of classes B60 - B64; pressure vessels in general F16J12/00 ) +3 CPC IPC+CPC Available in IPC and CPC
F17C 11/00 Use of gas-solvents or gas-sorbents in vessels +3 CPC IPC+CPC Available in IPC and CPC
F17C 13/00 Details of vessels or of the filling or discharging of vessels +5 CPC IPC+CPC Available in IPC and CPC
F17C 2201/00 Vessel construction, in particular geometry, arrangement or size 2nd only +4 CPC CPC only CPC only
F17C 2203/00 Vessel construction, in particular walls or details thereof 2nd only +3 CPC CPC only CPC only
F17C 2205/00 Vessel construction, in particular mounting arrangements, attachments or identifications means 2nd only +3 CPC CPC only CPC only
F17C 2209/00 Vessel construction, in particular methods of manufacturing 2nd only +3 CPC CPC only CPC only
F17C 2221/00 Handled fluid, in particular type of fluid 2nd only +5 CPC CPC only CPC only
F17C 2223/00 Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel 2nd only +3 CPC CPC only CPC only
F17C 2225/00 Handled fluid after transfer, i.e. state of fluid after transfer from the vessel 2nd only +3 CPC CPC only CPC only
F17C 2227/00 Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid 2nd only +3 CPC CPC only CPC only
F17C 2250/00 Accessories; Control means; Indicating, measuring or monitoring of parameters 2nd only +5 CPC CPC only CPC only
F17C 2260/00 Purposes of gas storage and gas handling 2nd only +5 CPC CPC only CPC only
F17C 2265/00 Effects achieved by gas storage or gas handling 2nd only +7 CPC CPC only CPC only
F17C 2270/00 Applications 2nd only +4 CPC CPC only CPC only
F17C 3/00 Vessels not under pressure +1 CPC IPC+CPC Available in IPC and CPC
F17C 5/00 Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures (adding propellants to aerosol containers B65B31/00) +1 CPC IPC+CPC Available in IPC and CPC
F17C 6/00 Methods and apparatus for filling vessels not under pressure with liquefied or solidified gases since 1980 IPC+CPC Available in IPC and CPC
F17C 7/00 Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass IPC+CPC Available in IPC and CPC
F17C 9/00 Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure IPC+CPC Available in IPC and CPC