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Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised
Search Symbol
CPC
COOPERATIVE PATENT CLASSIFICATION
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GAS-HOLDERS OF VARIABLE CAPACITY (self-acting gas cut-off devices A47J 27/62, G05D; flame traps A62C 4/00; gas mixers B01F, F16K 11/00, G05D 11/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H 7/00, gas compressors F04; valves F16K; damping pulsations in valves or pipes F16K, F16L; pipes F16L; stopping devices for gas mains F16L 55/10; vessels adapted for storing compressed, liquefied, or solidified gases F17C; gas distribution systems F17D 1/04; detecting leakage F17D 5/02, G01M; supervising or alarm devices F17D 5/02, G08B; control of combustion in burners F23N; gas flow or pressure regulators G05D) [2013‑01]
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Gas-holders of variable capacity (large containers in general B65D 88/00; storing fluids in natural or artificial cavities or chambers in the earth B65G 5/00) [2013‑01]
F17B 1/007
.
with telescopically movable ring-shaped parts (F17B 1/10 takes precedence; sealing of rings F17B 1/04) [2013‑01]
F17B 1/013
.
with movables discs (F17B 1/10 takes precedence; sealing of discs F17B 1/04) [2013‑01]
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F17B 1/02
.
Details [2013‑01]
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F17B 1/04
. .
Sealing devices for sliding parts (in general F16J 15/00) [2013‑01]
F17B 1/06
. . .
using sealing liquids [2013‑01]
F17B 1/08
. . .
using resilient materials for packing, e.g. leather [2013‑01]
F17B 1/10
. .
Guiding moving parts [2013‑01]
F17B 1/12
. .
Gas admission or discharge arrangements [2013‑01]
F17B 1/14
. .
Safety devices, e.g. prevention of excess pressure [2013‑01]
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F17B 1/16
.
of wet type [2013‑01]
F17B 1/18
. .
bell-shaped [2013‑01]
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F17B 1/20
. .
telescopic [2013‑01]
F17B 1/22
. . .
spirally-guided [2013‑01]
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F17B 1/24
.
of dry type [2013‑01]
F17B 1/26
. .
with flexible walls, e.g. bellows (connection of valves to inflatable elastic bodies B60C 29/00) [2013‑01]
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013