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Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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GRATES (inlets for fluidisation air for fluidised bed combustion apparatus F23C 10/20); CLEANING OR RAKING GRATES
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F23H 1/00
Grates with solid bars
F23H 1/02
.
having provision for air supply or air preheating, e.g. air-supply or blast fittings which form a part of the grate structure or serve as supports
F23H 1/04
.
having a variable burning surface
.
having bars at different levels (double grates F23H 5/00)
F23H 1/08
.
Vertical grates
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F23H 3/00
Grates with hollow bars
F23H 3/02
.
internally cooled
F23H 3/04
.
externally cooled, e.g. with water, steam or air
F23H 5/00
Double grates
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Inclined
{
or stepped
}
grates (inclined travelling grates F23H 11/12)
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F23H 7/02
.
with fixed bars
F23H 7/04
. .
in parallel disposition
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F23H 7/06
.
with movable bars disposed parallel to direction of fuel feeding
F23H 7/08
. .
reciprocating along their axes
F23H 7/10
. .
rocking about their axes
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F23H 7/12
.
with movable bars disposed transversely to direction of fuel feeding
F23H 7/14
. .
reciprocating along their axis
F23H 7/16
. .
rocking about their axes
F23H 7/18
. .
reciprocating in an upward direction
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Revolving-grates; Rocking-grates (F23H 7/00 takes precedence)
F23H 9/02
.
Revolving cylindrical grates
.
Grates rocked as a whole
F23H 9/06
.
the bars being rocked about axes transverse to their lengths
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F23H 9/08
.
the bars being rocked about their longitudinal axes
F23H 9/10
. .
and modified to move fuel along the grate
F23H 9/12
.
the bars being vertically movable in a plane
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F23H 11/00
Travelling-grates
F23H 11/02
.
with the bars disposed on transverse bearers
F23H 11/04
.
with the bars pivoted at one side
F23H 11/06
.
with the bars movable relatively to one another
F23H 11/08
.
with several individually-movable grate surfaces
F23H 11/10
.
with special provision for supply of air from below and for regulating air supply
F23H 11/12
.
inclined travelling grates; Stepped travelling grates
F23H 11/14
.
serving as auxiliary grates
F23H 11/16
.
for multi-layer stoking
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F23H 11/18
.
Details
F23H 11/20
. .
Driving-means
F23H 11/22
. .
Moving fuel along grate; Cleaning of grate
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F23H 11/24
. .
Removal of ashes; Removal of clinker
F23H 11/26
. . .
by dumping
F23H 11/28
. .
Replaceable burning-surface
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F23H 13/00
Grates not covered by any preceding group
F23H 13/02
.
Basket grates, e.g. with shaking arrangement
F23H 13/04
.
Telescoping-grates
F23H 13/06
.
Dumping-grates
F23H 13/08
.
Grates specially adapted for gas generators and also applicable to furnaces
Cleaning arrangements for grates (not forming part of the grate F23J 1/00); Moving fuel along grate (rocking-grates modified for moving fuel F23H 9/10; for travelling-grates F23H 11/22)
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F23H 17/00
Details of grates
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F23H 17/02
.
End fittings on bars
F23H 17/04
. .
of travelling-grates
F23H 17/06
.
Provision for vertical adjustment of grate
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F23H 17/08
.
Bearers; Frames; Spacers; Supports
F23H 17/10
. .
Dead plates; Imperforate fuel supports
F23H 17/12
.
Fire-bars
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F23H 2700/00
Grates characterised by special features or applications
F23H 2700/001
.
Grates specially adapted for steam boilers
F23H 2700/002
.
Inclined grates with longitudinally movable gratebars
F23H 2700/003
.
Stepped grates with rotatable or slidable gratebars
F23H 2700/004
.
Rotary grates with horizontal axis
F23H 2700/005
.
Rotary grates with vertical axis
F23H 2700/006
.
Grates of basket-type
F23H 2700/007
.
Basket grates with shaking arrangement
F23H 2700/008
.
Mobile grates
F23H 2700/009
.
Grates specially adapted for incinerators
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F23H 2900/00
Special features of combustion grates
F23H 2900/03021
.
Liquid cooled grates
F23H 2900/09041
.
Vibrating grates for solid fuels (specially adapted for incinerators F23G 2203/107)
F23H 2900/17001
.
Specific materials therefor
F23H 2900/17002
.
Detachable or removable worn-out parts
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013