the engines being of extraction or non-condensing type; Use of steam for feed-water heating (feed-water heaters in general F22D)

Introduced: September 1968

Title

Titles differ between systems:

IPC: the engines being of extraction or non-condensing type; Use of steam for feed-water heating

CPC: the engines being of extraction or non-condensing type; Use of steam for feed-water heating (feed-water heaters in general F22D)

Full Title

Full titles differ between systems:

IPC:

Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating > the engines being of extraction or non-condensing type; Use of steam for feed-water heating

CPC:

Steam engine plants characterised by the use of specific types of engine (F01K3/02 takes precedence); Plants or engines characterised by their use of special steam systems, cycles or processes (reciprocating-piston engines using uniflow principle F01B17/04); Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating > the engines being of extraction or non-condensing type; Use of steam for feed-water heating (feed-water heaters in general F22D)

Of 6 combined children, 5 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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F01K 7/345 CPC only CPC only
F01K 7/36 the engines being of positive-displacement type IPC+CPC Available in IPC and CPC
F01K 7/38 the engines being of turbine type IPC+CPC Available in IPC and CPC
F01K 7/40 Use of two or more feed-water heaters in series IPC+CPC Available in IPC and CPC
F01K 7/42 Use of desuperheaters for feed-water heating IPC+CPC Available in IPC and CPC
F01K 7/44 Use of steam for feed-water heating and another purpose IPC+CPC Available in IPC and CPC