IPC Classification

Class code (prefix) Descriptions Number of results
B61L 1/00 Devices along the route controlled by interaction with the vehicle or vehicle train
B61L 1/02 Electric devices associated with track
B61L 1/04 Electric devices associated with track mechanically actuated by a part of the vehicle
B61L 1/06 Electric devices associated with track actuated by vibration in rail
B61L 1/08 Electric devices associated with track electrostatically actuated
B61L 1/10 Electric devices associated with track actuated by particle radiation
B61L 1/12 Electric devices associated with overhead trolley wires
B61L 1/14 Devices for indicating the passing of the end of the vehicle or vehicle train
B61L 1/16 Devices for counting axles; Devices for counting vehicles
B61L 1/18 Railway track circuits
B61L 1/20 Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning
B61L 3/00 Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal
B61L 3/02 Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal at selected places along the route, e.g. intermittent control
B61L 3/04 Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal at selected places along the route, e.g. intermittent control controlling mechanically
B61L 3/06 Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal at selected places along the route, e.g. intermittent control controlling by electromagnetic or particle radiation, e.g. by light beam
B61L 3/08 Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal at selected places along the route, e.g. intermittent control controlling electrically
B61L 3/10 Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal at selected places along the route, e.g. intermittent control controlling electrically using current passing between devices along the route and devices on the vehicle train
B61L 3/12 Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal at selected places along the route, e.g. intermittent control controlling electrically using radio waves
B61L 3/14 Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal at selected places along the route, e.g. intermittent control to cut-off the power supply to traction motors of electrically-propelled vehicles
B61L 3/16 Continuous control along the route
B61L 3/18 Continuous control along the route using electric current passing between devices along the route and devices on the vehicle or vehicle train
B61L 3/20 Continuous control along the route using electric current passing between devices along the route and devices on the vehicle or vehicle train employing different frequencies or coded pulse groups
B61L 3/22 Continuous control along the route using electromagnetic radiation
B61L 3/24 Continuous control along the route using electromagnetic radiation employing different frequencies or coded pulse groups
B61L 5/00 Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
B61L 5/02 Mechanical devices for operating points or scotch-blocks
B61L 5/04 Fluid-pressure devices for operating points or scotch-blocks
B61L 5/06 Electric devices for operating points or scotch-blocks
B61L 5/08 Underground actuating arrangements, e.g. for tramways
B61L 5/10 Locking mechanisms for points; Means for indicating the setting of points
B61L 5/12 Visible signals
B61L 5/14 Form signals, e.g. semaphore arms
B61L 5/16 Local operating mechanisms for form signals
B61L 5/18 Light signals; Mechanisms associated therewith, e.g. blinders
B61L 5/20 Audible signals, e.g. detonator
B61L 5/22 Devices for initiating the release of detonators in a certain position of a signal
B61L 5/24 Replacement of detonators
B61L 7/00 Remote control of local operating means for points, signals, or track-mounted scotch-blocks
B61L 7/02 Remote control of local operating means for points, signals, or track-mounted scotch-blocks using mechanical transmission, e.g. wire, lever
B61L 7/04 Remote control of local operating means for points, signals, or track-mounted scotch-blocks using fluid-pressure transmission
B61L 7/06 Remote control of local operating means for points, signals, or track-mounted scotch-blocks using electrical transmission
B61L 7/08 Circuitry
B61L 7/10 Circuitry for light signals, e.g. for supervision, back- signalling
B61L 9/00 Illumination specially adapted for points, form signals, or gates
B61L 9/02 Illumination specially adapted for points, form signals, or gates non-electric
B61L 9/04 Illumination specially adapted for points, form signals, or gates electric
B61L 11/00 Operation of points from the vehicle or by the passage of the vehicle
B61L 11/02 Operation of points from the vehicle or by the passage of the vehicle using mechanical interaction between vehicle and track
B61L 11/04 Trailable point locks
B61L 11/06 Operation of points from the vehicle or by the passage of the vehicle using mechanical interaction between vehicle and track with fluid-pressure transmission
B61L 11/08 Operation of points from the vehicle or by the passage of the vehicle using electrical or magnetic interaction between vehicle and track
B61L 13/00 Operation of signals from the vehicle or by the passage of the vehicle
B61L 13/02 Operation of signals from the vehicle or by the passage of the vehicle using mechanical interaction between vehicle and track
B61L 13/04 Operation of signals from the vehicle or by the passage of the vehicle using electrical or magnetic interaction between vehicle and track
B61L 15/00 Indicators provided on the vehicle or vehicle train for signalling purposes
B61L 15/02 Head or tail indicators, e.g. light
B61L 17/00 Switching systems for classification yards
B61L 17/02 Switching systems for classification yards - Details, e.g. indicating degree of track filling
B61L 19/00 Arrangements for interlocking between points and signals by means of a single interlocking device
B61L 19/02 Interlocking devices having mechanical or fluid-pressure operation
B61L 19/04 Interlocking devices having mechanical or fluid-pressure operation - Details, e.g. hand lever, back-signalling device
B61L 19/06 Interlocking devices having electrical operation
B61L 19/08 Special arrangements for power supply for interlocking devices
B61L 19/10 Interlocking devices having electrical operation with mechanical locks
B61L 19/12 Interlocking devices having electrical operation with mechanical locks - Details
B61L 19/14 Interlocking devices having electrical operation with electrical locks
B61L 19/16 Interlocking devices having electrical operation with electrical locks - Details
B61L 21/00 Station blocking between signal boxes in one yard
B61L 21/02 Mechanical locking and release of the route; Repeat locks; Coupling of semaphores
B61L 21/04 Electrical locking and release of the route; Electrical repeat locks
B61L 21/06 Vehicle-on-line indication; Monitoring locking and release of the route
B61L 21/08 Order transmission and reception arrangements for giving or withholding permission
B61L 21/10 Arrangements for trains which are closely following one another
B61L 23/00 Control, warning or like safety means along the route or between vehicles or vehicle trains
B61L 23/02 Control, warning or like safety means along the route or between vehicles or vehicle trains for indicating along the route the failure of brakes
B61L 23/04 Control, warning or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
B61L 23/06 Control, warning or like safety means along the route or between vehicles or vehicle trains for warning men working on the route
B61L 23/08 Control, warning or like safety means along the route or between vehicles or vehicle trains for controlling traffic in one direction only
B61L 23/10 Control, warning or like safety means along the route or between vehicles or vehicle trains for controlling traffic in one direction only manually operated
B61L 23/12 Control, warning or like safety means along the route or between vehicles or vehicle trains for controlling traffic in one direction only partly operated by train
B61L 23/14 Control, warning or like safety means along the route or between vehicles or vehicle trains for controlling traffic in one direction only automatically operated
B61L 23/16 Track circuits specially adapted for section blocking
B61L 23/18 Control, warning or like safety means along the route or between vehicles or vehicle trains for controlling traffic in one direction only automatically operated specially adapted for maintaining a safe distance between vehicles or vehicle trains depending upon speed and traffic density
B61L 23/20 Control, warning or like safety means along the route or between vehicles or vehicle trains for controlling traffic in one direction only automatically operated with transmission of instructions to stations along the route
B61L 23/22 Control, warning or like safety means along the route or between vehicles or vehicle trains for controlling traffic in two directions over the same pair of rails
B61L 23/24 Control, warning or like safety means along the route or between vehicles or vehicle trains for controlling traffic in two directions over the same pair of rails using token systems, e.g. train staffs, tablets
B61L 23/26 Control, warning or like safety means along the route or between vehicles or vehicle trains for controlling traffic in two directions over the same pair of rails with means for actuating signals from the vehicle or by passage of the vehicle
B61L 23/28 Control, warning or like safety means along the route or between vehicles or vehicle trains for controlling traffic in two directions over the same pair of rails using non-automatic blocking from a place along the route
B61L 23/30 Control, warning or like safety means along the route or between vehicles or vehicle trains for controlling traffic in two directions over the same pair of rails using automatic section blocking
B61L 23/32 Control, warning or like safety means along the route or between vehicles or vehicle trains for controlling traffic in two directions over the same pair of rails using automatic section blocking with provision for the blocking of passing sidings
B61L 23/34 Control, warning or like safety means along the route or between vehicles or vehicle trains for indicating the distance between vehicles or vehicle trains by the transmission of signals therebetween
B61L 25/00 Recording or indicating positions or identities of vehicles or vehicle trains or setting of track apparatus
B61L 25/02 Indicating or recording positions or identities of vehicles or vehicle trains
B61L 25/04 Indicating or recording train identities
B61L 25/06 Indicating or recording the setting of track apparatus, e.g. of points, of signals
B61L 25/08 Diagrammatic displays
B61L 27/00 Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
B61L 27/02 Manual systems
B61L 27/04 Automatic systems, e.g. controlled by train; Change-over to manual control
B61L 27/10 Operations, e.g. scheduling or time tables
B61L 27/12 Preparing schedules
B61L 27/14 Following schedules
B61L 27/16 Trackside optimisation of vehicle or vehicle train operation
B61L 27/18 Crew rosters; Itineraries
B61L 27/20 Trackside control of safe travel of vehicle or vehicle train, e.g. braking curve calculation
B61L 27/30 Trackside multiple control systems, e.g. switch-over between different systems
B61L 27/33 Backup systems, e.g. switching when failures occur
B61L 27/37 Migration, e.g. parallel installations running simultaneously
B61L 27/40 Handling position reports or trackside vehicle data
B61L 27/50 Trackside diagnosis or maintenance, e.g. software upgrades
B61L 27/53 Trackside diagnosis or maintenance, e.g. software upgrades for trackside elements or systems, e.g. trackside supervision of trackside control system conditions
B61L 27/57 Trackside diagnosis or maintenance, e.g. software upgrades for vehicles or vehicle trains, e.g. trackside supervision of train conditions
B61L 27/60 Testing or simulation
B61L 27/70 Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor - Details of trackside communication
B61L 29/00 Safety means for rail/road crossing traffic
B61L 29/02 Guards or obstacles for preventing access to the route
B61L 29/04 Gates for level crossings
B61L 29/06 Gates for level crossings yielding to vehicles in one direction but operated in a different direction
B61L 29/08 Operation of gates; Combined operation of gates and signals
B61L 29/10 Means for securing gates in their desired position
B61L 29/12 Manual operation
B61L 29/14 Manual operation mechanically
B61L 29/16 Manual operation electrically
B61L 29/18 Operation by approaching rail vehicle or rail vehicle train
B61L 29/20 Operation by approaching rail vehicle or rail vehicle train mechanically
B61L 29/22 Operation by approaching rail vehicle or rail vehicle train electrically
B61L 29/24 Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
B61L 29/26 Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning mechanically operated
B61L 29/28 Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
B61L 29/30 Supervision, e.g. monitoring arrangements
B61L 29/32 Timing, e.g. advance warning of approaching train
B61L 99/00 Subject matter not provided for in other groups of this subclass