Patents-Review.com
ClassID:

157018 ⎘

F23L13/02 - CPC Classification

Classification description:

Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having not other movement

Sub-classes:
Recent Application in this class:
#1
20250189124
2025-06-12

PREMIXING APPARATUS

 #2
20240175606
2024-05-30

FURNACE

 #3
20230408087
2023-12-21

Electronic Control Device and Flow Rate Measurement System

 #4
20220082252
2022-03-17

Flue damper having a float coupled to a damper gate

 #5
20220065447
2022-03-03

Velocity damper for a recovery boiler

 #6
20200309415
2020-10-01

Furnace

 #7
20200240635
2020-07-30

Velocity damper for a recovery boiler

 #8
20200025369
2020-01-23

Adjustable restrictor for burner

 #9
20190219262
2019-07-18

Integrated damper control system

 #10
20190017699
2019-01-17

Furnace inducer choke and a gas furnace employing the same

 #11
20180216816
2018-08-02

Combustion apparatus

 #12
20180187921
2018-07-05

Water heater

 #13
20180058724
2018-03-01

Furnace

 #14
20180003408
2018-01-04

Damper with adjustable resistance to blade motion

 #15
20170211425
2017-07-27

System, method and apparatus for minimizing heat loss in a heat recovery steam generator

 #16
20170198910
2017-07-13

Damper system for heater stack

 #17
20170115003
2017-04-27

Method and burner using the curie effect for controlling reactant velocity for operation in pre-heated and non-pre-heated modes

 #18
20170102166
2017-04-13

System and method to reduce standby energy loss in a gas burning appliance and components for use therewith

 #19
20160265785
2016-09-15

Sealed damper

 #20
20160265768
2016-09-15

Reverse flow prevention apparatus for common exhaust flue and combustion apparatus having same

 #21
20160186990
2016-06-30

Furnace inducer choke and a gas furnace employing the same

 #22
20150345784
2015-12-03

Dual venturi for combustor

 #23
20150147237
2015-05-28

Dry scrubber system with low load distributor device

 #24
20150034068
2015-02-05

Damper opening/closing mechanism and cooking device with same

 #25
20140154635
2014-06-05

Furnace efficiency tuning device

 #26
20140137855
2014-05-22

Stovepipe Damper System

 #27
20140109888
2014-04-24

Heating power adjusting apparatus of hot blast heater

 #28
20140041648
2014-02-13

STACK APPARATUS TO CONTROL FURNACE GAS EXIT VELOCITY

 #29
20130312645
2013-11-28

Heating apparatus with fan

 #30
20120282557
2012-11-08

Integrated damper control system

 #31
20120031392
2012-02-09

Heating apparatus with fan

 #32
20110203569
2011-08-25

Boiler system stabilizing damper and flue control method

 #33
20110168284
2011-07-14

System and method to reduce standby energy loss in a gas burning appliance and components for use therewith

 #34
20110119869
2011-05-26

Unitary shaft extender apparatus

 #35
20110094496
2011-04-28

Mechanical damper control

 #36
20100288957
2010-11-18

SHUT-OFF SYSTEM HAVING A PIVOT FLAP FOR LARGE PIPE CROSS-SECTIONS

 #37
20090277399
2009-11-12

Water heater and method of operating a waterheater

 #38
20090235916
2009-09-24

NON-RETURN VALVE FOR AN EXHAUST DUCT OF FLUE GASSES

 #39
20090191495
2009-07-30

Apparatus and method for controlling a damper in a gas-fired appliance

 #40
20090056601
2009-03-05

FURNACE

 #41
20080314260
2008-12-25

DUAL DAMPER CONTROL APPARATUS AND METHOD

 #42
20070289588
2007-12-20

Damper regulator assembly

 #43
20070204862
2007-09-06

COMBUSTION AIR VENT CONTROL FOR FURNACES

 #44
20070044787
2007-03-01

Air inlet damper apparatus

 #45
20060150873
2006-07-13

Slot-port system

 #46
20060090745
2006-05-04

Chimney draft control valve

 #47
20050247304
2005-11-10

Millivolt damper control device

 #48
20050247303
2005-11-10

Wireless fireplace damper control device