ClassID:

68577

B61L3/221 - CPC Classification

Classification description:

Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal; Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation using track circuits

Sub-classes:
Recent Application in this class:
#1
20260116439
2026-04-30

SYSTEM AND METHOD FOR VIRTUAL BLOCK OPERATIONAL STATUS CONTROL WITH LONG BLOCK TIME DELAY

#2
20250033679
2025-01-30

SYSTEM AND METHOD FOR VIRTUAL BLOCK STICK CIRCUITS

#3
20240149931
2024-05-09

RAILWAY DETECTION SYSTEM, RAILWAY INFRASTRUCTURE AND METHOD FOR DETECTING THE PRESENCE OF A RAILWAY VEHICLE

#4
20240001975
2024-01-04

RAILROAD VIRTUAL TRACK BLOCK SYSTEM

#5
20230166780
2023-06-01

SYSTEM AND METHOD FOR VIRTUAL BLOCK OPERATIONAL STATUS CONTROL WITH LONG BLOCK TIME DELAY

#6
20230083828
2023-03-16

System and method for virtual block stick circuits

#7
20220089203
2022-03-24

Railroad virtual track block system

#8
20220032975
2022-02-03

System and method for virtual block stick circuits

#9
20210253148
2021-08-19

Railroad virtual track block system

#10
20210253147
2021-08-19

Railroad virtual track block system

#11
20210086805
2021-03-25

Railroad virtual track block system

#12
20190047600
2019-02-14

Rail fracture detection device

#13
20180319413
2018-11-08

Railroad virtual track block system

#14
20160280242
2016-09-29

Automatic train stop control system

#15
20140100724
2014-04-10

Method and apparatus for a hybrid train control device

#16
20140012438
2014-01-09

System, method, and computer-readable medium for track circuit monitoring and alerting in automatic train control systems

#17
20130240679
2013-09-19

Method and sequential monitoring overlay system for track circuits

#18
20130187010
2013-07-25

Track circuit apparatus for train

#19
20120018591
2012-01-26

Method and apparatus for a hybrid train control device

#20
20110204189
2011-08-25

ELECTRONIC TRACK RELAY, AND RAILROAD SIGNALING SYSTEM USING THE SAME

#21
20100299007
2010-11-25

Method and apparatus for hybrid train control device

#22
20100171609
2010-07-08

Systems and method for communicating data in a railroad system

#23
20100063656
2010-03-11

Train control method and system

#24
20090173841
2009-07-09

METHODS AND SYSTEMS FOR DETECTING CAB SIGNALS

#25
20050258313
2005-11-24

Electronic code follower relay

#26
20050216143
2005-09-29

Safety system to detect and annunciate the loss of occupancy detection in transit systems

#27
20050001741
2005-01-06

Automatic train stop system

#28
14664993
2016-07-12

Automatic train stop control system