CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.

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QINGDAO, CN

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Patents Grantslast 30 patents

Information Patent Grant
Opening and closing mechanism and train having the same
- Patent number 11,697,962
- Issue date Jul 11, 2023
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Kun Wang
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Draft gear, coupler and draft gear and railway train
- Patent number 11,498,596
- Issue date Nov 15, 2022
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Huaping Yang
- B61 - RAILWAYS
Information Patent Grant
Bidirectional windage resistance brake apparatus
- Patent number 11,364,941
- Issue date Jun 21, 2022
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Yunpeng Wang
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Follow-up mechanism and brake caliper unit for gauge-changeable bogie
- Patent number 11,208,124
- Issue date Dec 28, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD. (CN)
- Zhen Wang
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Synchronous soft-start networking control strategy for parallel aux...
- Patent number 11,133,704
- Issue date Sep 28, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD. (CN)
- Bo Zhang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Parallel control method and system for single-phase inverters and i...
- Patent number 11,101,741
- Issue date Aug 24, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Bo Zhang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and system for configuring regenerative braking energy recov...
- Patent number 11,065,965
- Issue date Jul 20, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD. (CN)
- Yawei Zhang
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Coupler telescopic apparatus and coupler
- Patent number 11,014,584
- Issue date May 25, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD. (CN)
- Guangchao Wang
- B61 - RAILWAYS
Information Patent Grant
Control system and method for permanent magnet synchronous traction...
- Patent number 10,897,218
- Issue date Jan 19, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD. (CN)
- Jingbin Bi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Hard-shell flexibly-packaged capacitor module and system
- Patent number 10,825,615
- Issue date Nov 3, 2020
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Guangchun Xia
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Locking device and opening and closing mechanism having the same
- Patent number 10,655,381
- Issue date May 19, 2020
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Hui Liu
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Threaded interface buffer with anti-rotation structure
- Patent number 10,611,386
- Issue date Apr 7, 2020
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Qingsong Lu
- B61 - RAILWAYS
Information Patent Grant
Traction control system for electric multiple units
- Patent number 10,480,551
- Issue date Nov 19, 2019
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Baolei Hao
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Loading test test-and-control system and method of vehicle lifter l...
- Patent number 10,345,197
- Issue date Jul 9, 2019
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Hui Ding
- G01 - MEASURING TESTING
Information Patent Grant
Heavy freight train marshalling device and marshalling method, and...
- Patent number 10,246,110
- Issue date Apr 2, 2019
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Yanfen Xu
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Tigersharc DSP boot management chip and method
- Patent number 10,203,962
- Issue date Feb 12, 2019
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Zhen Li
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Offline variable monitoring system and method for MPUs of an EMU train
- Patent number 10,189,489
- Issue date Jan 29, 2019
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Kai Wang
- G05 - CONTROLLING REGULATING
Information Patent Grant
Train smoke and fire alarm communication method based on independen...
- Patent number 10,147,292
- Issue date Dec 4, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Guorui Yin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Control system and control method for a phase shifted full bidge ch...
- Patent number 10,097,024
- Issue date Oct 9, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Xianqi Lin
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Brake beam fatigue test stand
- Patent number 10,088,387
- Issue date Oct 2, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Xing Jin
- G01 - MEASURING TESTING
Information Patent Grant
Broadband communication network architecture with train control net...
- Patent number 10,056,985
- Issue date Aug 21, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Yanfen Xu
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Hand brake limiting device
- Patent number 9,932,053
- Issue date Apr 3, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Jingquan Bi
- B61 - RAILWAYS
Information Patent Grant
Hand brake
- Patent number 9,828,009
- Issue date Nov 28, 2017
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Jingquan Bi
- B60 - VEHICLES IN GENERAL
Information Patent Grant
System and method for parallel power supply control for auxiliary c...
- Patent number 9,809,118
- Issue date Nov 7, 2017
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Dongjun Yang
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Testing device for electromagnetic attraction force of a magnetic t...
- Patent number 9,677,959
- Issue date Jun 13, 2017
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Xiangrui Li
- G01 - MEASURING TESTING
Information Patent Grant
Traction control system for electric multiple units
- Patent number 9,669,732
- Issue date Jun 6, 2017
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Fengzhao Cui
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Telescopic mechanism in telescopic hitch buffer device for use in h...
- Patent number 9,616,904
- Issue date Apr 11, 2017
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Xiaozhong Lv
- B61 - RAILWAYS
Information Patent Grant
Balancing apparatus for a transition coupler
- Patent number 9,545,934
- Issue date Jan 17, 2017
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Hui Liu
- B61 - RAILWAYS
Information Patent Grant
Self-adjusting supporting head
- Patent number 9,540,221
- Issue date Jan 10, 2017
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Minghai Wang
- B61 - RAILWAYS
Information Patent Grant
Segmented inverting cover plate apparatus for underfloor vehicle li...
- Patent number 9,527,708
- Issue date Dec 27, 2016
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Hui Ding
- B66 - HOISTING LIFTING HAULING

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Patents Applicationslast 30 patents

Information Patent Application
BIDIRECTIONAL WINDAGE RESISTANCE BRAKE APPARATUS
- Publication number 20220135091
- Publication date May 5, 2022
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- YUNPENG WANG
- B60 - VEHICLES IN GENERAL
Information Patent Application
DRAFT GEAR, COUPLER AND DRAFT GEAR AND RAILWAY TRAIN
- Publication number 20220126891
- Publication date Apr 28, 2022
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- HUAPING YANG
- B61 - RAILWAYS
Information Patent Application
LOCOMOTIVE BRAKING CONTROL SYSTEM AND CONTROL METHOD
- Publication number 20220105917
- Publication date Apr 7, 2022
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- XIAO LV
- B60 - VEHICLES IN GENERAL
Information Patent Application
FOLLOW-UP MECHANISM AND BRAKE CALIPER UNIT FOR GAUGE-CHANGEABLE BOGIE
- Publication number 20210331722
- Publication date Oct 28, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Zhen WANG
- B60 - VEHICLES IN GENERAL
Information Patent Application
LOCOMOTIVE BRAKING CONTROL SYSTEM AND CONTROL METHOD
- Publication number 20210309191
- Publication date Oct 7, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- XIAO LV
- B60 - VEHICLES IN GENERAL
Information Patent Application
PARALLEL CONTROL METHOD AND SYSTEM FOR SINGLE-PHASE INVERTERS AND I...
- Publication number 20210143752
- Publication date May 13, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Bo ZHANG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SYNCHRONOUS SOFT-START NETWORKING CONTROL STRATEGY FOR PARALLEL AUX...
- Publication number 20210143671
- Publication date May 13, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Bo ZHANG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
COUPLER TELESCOPIC APPARATUS AND COUPLER
- Publication number 20210078616
- Publication date Mar 18, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Guangchao WANG
- B61 - RAILWAYS
Information Patent Application
CONTROL SYSTEM AND METHOD FOR PERMANENT MAGNET SYNCHRONOUS TRACTION...
- Publication number 20210013821
- Publication date Jan 14, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Jingbin BI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
IN-VEHICLE NETWORK SYSTEM AND COMMUNICATION METHOD THEREOF
- Publication number 20210009174
- Publication date Jan 14, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Yanfen XU
- B61 - RAILWAYS
Information Patent Application
AIR SPRING
- Publication number 20210003187
- Publication date Jan 7, 2021
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- PENG SU
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
METHOD AND SYSTEM FOR CONFIGURING REGENERATIVE BRAKING ENERGY RECOV...
- Publication number 20200391596
- Publication date Dec 17, 2020
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- YAWEI ZHANG
- B60 - VEHICLES IN GENERAL
Information Patent Application
OPENING AND CLOSING MECHANISM AND TRAIN HAVING THE SAME
- Publication number 20200240201
- Publication date Jul 30, 2020
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- KUN WANG
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
HARD-SHELL FLEXIBLY-PACKAGED CAPACITOR MODULE AND SYSTEM
- Publication number 20200126734
- Publication date Apr 23, 2020
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Guangchun Xia
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
THREADED INTERFACE BUFFER WITH ANTI-ROTATION STRUCTURE
- Publication number 20190232981
- Publication date Aug 1, 2019
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- QINGSONG LU
- B61 - RAILWAYS
Information Patent Application
AUTOMATIC UNCOUPLING MECHANISM FOR COUPLERS
- Publication number 20190144013
- Publication date May 16, 2019
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- QUAN LIU
- B61 - RAILWAYS
Information Patent Application
LOADING TEST TEST-AND-CONTROL SYSTEM AND METHOD OF VEHICLE LIFTER L...
- Publication number 20180292297
- Publication date Oct 11, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- HUI DING
- G01 - MEASURING TESTING
Information Patent Application
HEAVY FREIGHT TRAIN MARSHALLING DEVICE AND MARSHALLING METHOD, AND...
- Publication number 20180194378
- Publication date Jul 12, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- YANFEN XU
- B60 - VEHICLES IN GENERAL
Information Patent Application
TRAIN SMOKE AND FIRE ALARM COMMUNICATION METHOD BASED ON INDEPENDEN...
- Publication number 20180174417
- Publication date Jun 21, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- GUORUI YIN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
BROADBAND COMMUNICATION NETWORK ARCHITECTURE WITH TRAIN CONTROL NET...
- Publication number 20180123703
- Publication date May 3, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- YANFEN XU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LOCKING DEVICE AND OPENING AND CLOSING MECHANISM HAVING THE SAME
- Publication number 20180094473
- Publication date Apr 5, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- Hui Liu
- B61 - RAILWAYS
Information Patent Application
NONLINEAR AUXILIARY SPRING, NEW-BELTED DIAPHRAGM AND AIR SPRING
- Publication number 20180058534
- Publication date Mar 1, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- XUEBING LI
- B61 - RAILWAYS
Information Patent Application
TIGERSHARC DSP BOOT MANAGEMENT CHIP AND METHOD
- Publication number 20180032346
- Publication date Feb 1, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- ZHEN LI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
BRAKE BEAM FATIGUE TEST STAND
- Publication number 20180017465
- Publication date Jan 18, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- XING JIN
- G01 - MEASURING TESTING
Information Patent Application
OFFLINE VARIABLE MONITORING SYSTEM AND METHOD FOR MPUs OF AN EMU TRAIN
- Publication number 20180015936
- Publication date Jan 18, 2018
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- KAI WANG
- B61 - RAILWAYS
Information Patent Application
TRACTION CONTROL SYSTEM FOR ELECTRIC MULTIPLE UNITS
- Publication number 20170292544
- Publication date Oct 12, 2017
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- BAOLEI HAO
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Application
PROTOCOL CONVERTER BETWEEN CPCI BUS AND ISA BUS AND CONVERSION METH...
- Publication number 20170111184
- Publication date Apr 20, 2017
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- YAWEI ZHANG
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
TESTING DEVICE FOR ELECTROMAGNETIC ATTRACTION FORCE OF A MAGNETIC T...
- Publication number 20170052080
- Publication date Feb 23, 2017
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- XIANGRUI LI
- G01 - MEASURING TESTING
Information Patent Application
HAND BRAKE LIMITING DEVICE
- Publication number 20160347335
- Publication date Dec 1, 2016
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- JINGQUAN BI
- B61 - RAILWAYS
Information Patent Application
SELF-ADJUSTING SUPPORTING HEAD
- Publication number 20160280521
- Publication date Sep 29, 2016
- CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.
- MINGHAI WANG
- B61 - RAILWAYS

CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE CO., LTD.

Organization

Patents Grantslast 30 patents

Opening and closing mechanism and train having the same

Draft gear, coupler and draft gear and railway train

Bidirectional windage resistance brake apparatus

Follow-up mechanism and brake caliper unit for gauge-changeable bogie

Synchronous soft-start networking control strategy for parallel aux...

Parallel control method and system for single-phase inverters and i...

Method and system for configuring regenerative braking energy recov...

Coupler telescopic apparatus and coupler

Control system and method for permanent magnet synchronous traction...

Hard-shell flexibly-packaged capacitor module and system

Locking device and opening and closing mechanism having the same

Threaded interface buffer with anti-rotation structure

Traction control system for electric multiple units

Loading test test-and-control system and method of vehicle lifter l...

Heavy freight train marshalling device and marshalling method, and...

Tigersharc DSP boot management chip and method

Offline variable monitoring system and method for MPUs of an EMU train

Train smoke and fire alarm communication method based on independen...

Control system and control method for a phase shifted full bidge ch...

Brake beam fatigue test stand

Broadband communication network architecture with train control net...

Hand brake limiting device

Hand brake

System and method for parallel power supply control for auxiliary c...

Testing device for electromagnetic attraction force of a magnetic t...

Traction control system for electric multiple units

Telescopic mechanism in telescopic hitch buffer device for use in h...

Balancing apparatus for a transition coupler

Self-adjusting supporting head

Segmented inverting cover plate apparatus for underfloor vehicle li...

Patents Applicationslast 30 patents

BIDIRECTIONAL WINDAGE RESISTANCE BRAKE APPARATUS

DRAFT GEAR, COUPLER AND DRAFT GEAR AND RAILWAY TRAIN

LOCOMOTIVE BRAKING CONTROL SYSTEM AND CONTROL METHOD

FOLLOW-UP MECHANISM AND BRAKE CALIPER UNIT FOR GAUGE-CHANGEABLE BOGIE

LOCOMOTIVE BRAKING CONTROL SYSTEM AND CONTROL METHOD

PARALLEL CONTROL METHOD AND SYSTEM FOR SINGLE-PHASE INVERTERS AND I...

SYNCHRONOUS SOFT-START NETWORKING CONTROL STRATEGY FOR PARALLEL AUX...

COUPLER TELESCOPIC APPARATUS AND COUPLER

CONTROL SYSTEM AND METHOD FOR PERMANENT MAGNET SYNCHRONOUS TRACTION...

IN-VEHICLE NETWORK SYSTEM AND COMMUNICATION METHOD THEREOF

AIR SPRING

METHOD AND SYSTEM FOR CONFIGURING REGENERATIVE BRAKING ENERGY RECOV...

OPENING AND CLOSING MECHANISM AND TRAIN HAVING THE SAME

HARD-SHELL FLEXIBLY-PACKAGED CAPACITOR MODULE AND SYSTEM

THREADED INTERFACE BUFFER WITH ANTI-ROTATION STRUCTURE

AUTOMATIC UNCOUPLING MECHANISM FOR COUPLERS

LOADING TEST TEST-AND-CONTROL SYSTEM AND METHOD OF VEHICLE LIFTER L...

HEAVY FREIGHT TRAIN MARSHALLING DEVICE AND MARSHALLING METHOD, AND...

TRAIN SMOKE AND FIRE ALARM COMMUNICATION METHOD BASED ON INDEPENDEN...

BROADBAND COMMUNICATION NETWORK ARCHITECTURE WITH TRAIN CONTROL NET...

LOCKING DEVICE AND OPENING AND CLOSING MECHANISM HAVING THE SAME

NONLINEAR AUXILIARY SPRING, NEW-BELTED DIAPHRAGM AND AIR SPRING

TIGERSHARC DSP BOOT MANAGEMENT CHIP AND METHOD

BRAKE BEAM FATIGUE TEST STAND

OFFLINE VARIABLE MONITORING SYSTEM AND METHOD FOR MPUs OF AN EMU TRAIN

TRACTION CONTROL SYSTEM FOR ELECTRIC MULTIPLE UNITS

PROTOCOL CONVERTER BETWEEN CPCI BUS AND ISA BUS AND CONVERSION METH...

TESTING DEVICE FOR ELECTROMAGNETIC ATTRACTION FORCE OF A MAGNETIC T...

HAND BRAKE LIMITING DEVICE

SELF-ADJUSTING SUPPORTING HEAD