ClassID:

200171

G21C7/14 - CPC Classification

Classification description:

Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods; Means for moving control elements to desired position Mechanical drive arrangements

Recent Application in this class:
#1
20260081044
2026-03-19

CONTROL ROD APPARATUS FOR SMALL MODULAR REACTOR, AND SMALL MODULAR REACTOR COMPRISING SAME

#2
20260066143
2026-03-05

ABNORMALITY DETECTION DEVICE, ABNORMALITY DETECTION METHOD, AND PROGRAM FOR CONTROL ROD DRIVE DEVICE

#3
20250232887
2025-07-17

DRIVE MECHANISM, CONTROL ROD DRIVE MECHANISM, AND NUCLEAR REACTOR

#4
20250174369
2025-05-29

MOLTEN SALT REACTOR WITH HORIZONTALLY ACTUATED CONTROL BLADE

#5
20250157679
2025-05-15

NUCLEAR REACTOR SHUTDOWN SYSTEM AND METHOD OF NUCLEAR REACTOR SHUTDOWN

#6
20250087378
2025-03-13

High Temperature Reactor With Reduced Silo Height

#7
20250006384
2025-01-02

A REACTOR CONTROL SYSTEM

#8
20240418287
2024-12-19

A Linear Motor For Use In A Molten Salt Nuclear Reactor And A Valve For Use In A Molten Salt Nuclear Reactor

#9
20240153654
2024-05-09

NUCLEAR REACTOR AND FUEL

#10
20240038407
2024-02-01

METHOD OF REMOVING FOREIGN SUBSTANCES FROM CRDM AND DEVICE FOR EXECUTING SAME

#11
20230268088
2023-08-24

NUCLEAR REACTOR AND METHOD OF OPENING A NUCLEAR REACTOR

#12
20230230714
2023-07-20

CONTROL DRUM CONTROLLER FOR NUCLEAR REACTOR SYSTEM

#13
20230134417
2023-05-04

CONTROL ROD REMOTE DISCONNECT MECHANISM

#14
20230133343
2023-05-04

Control rod remote holdout mechanism

#15
20230120623
2023-04-20

Stationary isolated rod couplings for use in a nuclear reactor control rod drive

#16
20220406477
2022-12-22

Methods and devices to improve performances of RCCA and CEA to mitigate clad strain in the high fluence region

#17
20220230767
2022-07-21

DIGITAL SYSTEMS AND METHODS FOR HIGH PRECISION CONTROL IN NUCLEAR REACTORS

#18
20220215977
2022-07-07

Method of removing foreign substances from CRDM and device for executing same

#19
20220172853
2022-06-02

Control rod drive mechanism diagnostic tool using voltage and current recordings

#20
20220059247
2022-02-24

CONTROL ROD SYSTEM FOR REACTOR APPLICATIONS

#21
20220005618
2022-01-06

Combined mounting/electrical distribution plate for powering internal control rod drive mechanism (CRDM) units of a nuclear reactor

#22
20210225533
2021-07-22

Methods of moving an induction coil to move a control element in a nuclear reactor

#23
20210202117
2021-07-01

Control drum for a mobile nuclear reactor

#24
20210151207
2021-05-20

CONTROL ROD DRIVE MECHANISM ("CRDM") ASSEMBLY FOR A NUCLEAR REACTOR

#25
20210110942
2021-04-15

Digital systems and methods for high precision control in nuclear reactors

#26
20210082587
2021-03-18

Control drum system for use with nuclear reactors

#27
20210082586
2021-03-18

Actuating mechanism of a system for the control and protection of a nuclear reactor

#28
20200395134
2020-12-17

Rotational apparatus usable with control drum apparatus in nuclear environment

#29
20200388407
2020-12-10

Magnetically-actuated isolated rod couplings for use in a nuclear reactor control rod drive

#30
20200357530
2020-11-12

Control rod drive mechanism with separate latch and drive coils

#31
20200357529
2020-11-12

Integrated nuclear reactor architecture limiting the stress applied to the integrated mechanisms

#32
20200286636
2020-09-10

Control rod drive mechanism (CRDM) mounting method for pressurized water reactors

#33
20200152341
2020-05-14

Fail-safe control rod drive system for nuclear reactor

#34
20200027589
2020-01-23

Fail-safe control rod drive system for nuclear reactor

#35
20200027588
2020-01-23

Control rod drive mechanism with heat pipe cooling

#36
20190206579
2019-07-04

Nuclear reactor module with a cooling chamber for a drive motor of a control rod drive mechanism

#37
20190172594
2019-06-06

Rotational apparatus usable with control drum apparatus in nuclear environment

#38
20190122776
2019-04-25

Base plate mounted core components for reliable rod assembly and rapid field disassembly

#39
20190066855
2019-02-28

Combined mounting/electrical distribution plate for powering internal control rod drive mechanism (CRDM) units of a nuclear reactor

#40
20180261339
2018-09-13

Digital systems and methods for high precision control in nuclear reactors

#41
20180226161
2018-08-09

Nuclear reactor with screw-nut drive of core reactivity control members

#42
20180190392
2018-07-05

Control rod drive mechanism (CRDM) with remote disconnect mechanism

#43
20180102193
2018-04-12

Installation structure for installing control rod drive mechanism and cable sealing unit in nuclear reactor pressure vessel

#44
20180019028
2018-01-18

Magnetically-actuated isolated rod couplings for use in a nuclear reactor control rod drive

#45
20180019027
2018-01-18

Moveable isolated rod couplings for use in a nuclear reactor control rod drive

#46
20180019026
2018-01-18

Stationary isolated rod couplings for use in a nuclear reactor control rod drive

#47
20170148532
2017-05-25

Control rod drive includes an electric drive and a toothed rack

#48
20170040070
2017-02-09

Fail-safe control rod drive system for nuclear reactor

#49
20160307652
2016-10-20

DEVICE FOR HANDLING AN ABSORBENT CONTROL ROD OF A NUCLEAR REACTOR

#50
20160254065
2016-09-01

Control rod/control rod drive mechanism couplings

#51
20160196884
2016-07-07

Reactivity control method and telescoped control rod for pebble-bed high-temperature gas-cooled reactor

#52
20160141945
2016-05-19

Magnetic jack type control element drive mechanism for precision position control of control element assembly

#53
20150348658
2015-12-03

Nuclear reactor nozzle repair method

#54
20150348653
2015-12-03

Magnetic jack type in-vessel control element drive mechanism

#55
20150310942
2015-10-29

ACTUATOR

#56
20150255178
2015-09-10

Control rod drive mechanism

#57
20150221399
2015-08-06

In-vessel control rod drive mechanism and nuclear reactor with the same

#58
20150206605
2015-07-23

Control rod/control rod drive mechanism couplings

#59
20150187446
2015-07-02

Managing nuclear reactor control rods

#60
20150139380
2015-05-21

Control rod drive mechanism built in nuclear reactor

#61
20140334586
2014-11-13

CRDM designs with separate SCRAM latch engagement and locking

#62
20140321786
2014-10-30

Integrated cartridge double-row ball bearing for a nuclear reactor control rod drive mechanism

#63
20140301520
2014-10-09

CRDM with separate scram latch engagement and locking

#64
20140270036
2014-09-18

CRDM with separate SCRAM latch engagement and locking

#65
20140169514
2014-06-19

Nuclear reactor assembly having a connection between a control rod guide tube and a drive housing pipe

#66
20140016732
2014-01-16

Apparatus and method for controlling control rod of nuclear reactor for nuclear power plant

#67
20130329846
2013-12-12

Rotary actuator

#68
20130272464
2013-10-17

Control rod assembly impact limiter

#69
20130223579
2013-08-29

CONTROL ROD DRIVE MECHANISM ("CRDM") ASSEMBLY FOR A NUCLEAR REACTOR

#70
20110239797
2011-10-06

Fine motion control rod drive mechanism handling apparatus and method of handling fine motion control rod drive mechanism

#71
20110222640
2011-09-15

Control rod drive mechanism for nuclear reactor

#72
20100316178
2010-12-16

Cooling structure and cooling method for control rod drive mechanism and nuclear reactor

#73
20100316177
2010-12-16

Control rod drive mechanism for nuclear reactor

#74
20100098205
2010-04-22

Modular reactor head area assembly

#75
20100067644
2010-03-18

Thorium-based nuclear reactor and method

#76
20100067642
2010-03-18

Control rod drive mechanism

#77
20090185651
2009-07-23

CONTROL ROD POSITION DETECTOR AND CONTROL ROD DRIVE MECHANISM

#78
20090116605
2009-05-07

Nuclear reactor rod control mechanism control system

#79
17356844
2021-11-02

Control rod drive mechanism and reactor control system