(0)B61L:0/2:
IPC6
SECTION B - PERFORMING OPERATIONS; TRANSPORTING
GUIDING RAILWAY TRAFFIC: ENSURING THE SAFETY OF RAILWAY TRAFFIC
B61L
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B 61 L

 GUIDING RAILWAY TRAFFIC: ENSURING THE SAFETY OF RAILWAY TRAFFIC (power supply lines for electricallypropelled vehicles B 60 M; vehicle signalling in general B 60 Q; brakes or auxiliary equipment B 61 H, B 61 K; point or crossing construction E 01 B; insulated rail joints E 01 B 11/54; optical devices in general G 02; controlling in general G 05; electric communication technique H 04)
 

Note
 

This subclass covers:
 

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 devices along the route interacting with trains;
 

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 signals;
 

-

 operation of points and signals;
 

-

 interlocking;
 

-

 block systems;
 

-

 level crossings.

 

 

 
 

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/ 00 Devices along the route controlled by interaction with the vehicle or vehicle train (detonators B 61 L 5/20; operation of points or signals by passage of the vehicle B 61 L 11/00, B 61 L 13/00; central traffic control systems controlled by train B 61 L 27/04; operation of gates, or gates and signals, by approaching vehicle B 61 L 29/18)

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/ 02 • Electric devices associated with track  

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/ 04 • • mechanically actuated by a part of the vehicle  

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/ 06 • • actuated by deformation of rail; actuated by vibration in rail  

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/ 08 • • magnetically actuated; electrostatically actuated  

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/ 10 • • actuated by electromagnetic radiation; actuated by particle radiation  

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/ 12 • Electric devices associated with overhead trolley wires  

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/ 14 • Devices for indicating the passing of the end of the vehicle or vehicle train  

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/ 16 • Devices for counting axles; Devices for counting vehicles (counting moving objects in general G 06 M)  

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/ 18 • Railway track circuits (automatically-operated track circuits specially adapted for section blocking for controlling traffic B 61 L 23/00; rail joints E 01 B 11/00)  

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/ 20 • Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning  
 

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/ 00 Devices along the route for controlling devices on the vehicle or vehicle train, e.g. to release brake, to operate a warning signal

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/ 02 • at selected places along the route, e.g. intermittent control  

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/ 04 • • controlling mechanically  

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/ 06 • • controlling by electromagnetic or particle radiation, e.g. by light beam (using radio waves B 61 L 3/12)  

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/ 08 • • controlling electrically  

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/ 10 • • • using current passing between devices along the route and devices on the vehicle train  

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/ 12 • • • using magnetic or electrostatic induction; using radio waves  

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/ 14 • • to cut-off the power supply to traction motors of electrically-propelled vehicles  

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/ 16 • Continuous control along the route  

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/ 18 • • using electric current passing between devices along the route and devices on the vehicle or vehicle train  

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/ 20 • • • employing different frequencies or coded pulse groups  

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/ 22 • • using magnetic or electrostatic induction; using electromagnetic radiation  

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/ 24 • • • employing different frequencies or coded pulse groups  
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