|  | B |
SECTION B — PERFORMING OPERATIONS

TRANSPORTING

|  | B61 |
RAILWAYS

|  | B61 |
Note(s) The term "railway systems" is to be understood as covering: systems in which trains or individual passenger vehicles or load carriers run on, or are guided by, ground or elevated tracks defined by rails, ropes, cables, or other guiding elements for wheels, rollers, or sliding anti-friction devices; systems in which carriers or impellers for persons or loads are attached to, e.g. suspended from, a guided traction rope or cable which determines their path of movement (chain conveyers, scraper conveyers Fulltext... Hierarchy... Expanded...B65G 17/00, Fulltext... Hierarchy... Expanded...B65G 19/00); "power and free" systems of either of the above types in which vehicles, load-carriers, or loads may be selectively coupled to, or uncoupled from, continuous traction members, e.g. cables.

|  | B61B |
RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR (inclined systems in, or associated with, buildings or other structures and serving as lifts or hoists for conveying passengers or other loads from one level to another, e.g. inclined lifts associated with stairways, Fulltext... Hierarchy... Expanded...B66B; travelling cranes Fulltext... Hierarchy... Expanded...B66C)

|  | B61C |
LOCOMOTIVES; MOTOR RAILCARS (vehicles in general Fulltext... Hierarchy... Expanded...B60; frames and bogies Fulltext... Hierarchy... Expanded...B61F; special railroad equipment for locomotives Fulltext... Hierarchy... Expanded...B61J, Fulltext... Hierarchy... Expanded...B61K)

|  | B61C |
Note(s) This sub-class deals with general design features or items of locomotives and motor railcars not otherwise provided for, and non-electric features of electric locomotives.

|  | B61D |
BODY DETAILS AND KINDS OF RAILWAY VEHICLES (vehicles in general Fulltext... Hierarchy... Expanded...B60; adaptation of vehicles to special systems Fulltext... Hierarchy... Expanded...B61B; underframes Fulltext... Hierarchy... Expanded...B61F)

|  | B61F |
RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES, ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING; WHEELS GUARDS; OBSTRUCTION REMOVERS, OR THE LIKE (for vehicles in general Fulltext... Hierarchy... Expanded...B60; axles, wheels Fulltext... Hierarchy... Expanded...B60B; tyres Fulltext... Hierarchy... Expanded...B60C)

|  | B61G |
COUPLINGS; DRAUGHT AND BUFFING APPLIANCES (vehicle connections in general Fulltext... Hierarchy... Expanded...B60D)

|  | B61H |
BRAKES OR OTHER RETARDING APPARATUS PECULIAR TO RAIL VEHICLES; ARRANGEMENTS OR DISPOSITIONS OF BRAKES OR OTHER RETARDING APPARATUS IN RAIL VEHICLES (electrodynamic vehicle braking Fulltext... Hierarchy... Expanded...B60L, in general Fulltext... Hierarchy... Expanded...H02K; arrangements in rail vehicles for adjusting wheel-braking force to meet varying vehicular or permanent-way conditions Fulltext... Hierarchy... Expanded...B60T 8/00; transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive, brake systems incorporating such transmitting means, e.g. air-pressure brake systems, Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B60T 13/00-B60T 17/00; brakes per se Fulltext... Hierarchy... Expanded...F16D)

|  | B61J |
SHIFTING OR SHUNTING OF RAIL VEHICLES (shifting vehicles in general Fulltext... Hierarchy... Expanded...B60S; marshalling systems Fulltext... Hierarchy... Expanded...B61B)

|  | B61K |
OTHER AUXILIARY EQUIPMENT FOR RAILWAYS (energy-storing brakes Fulltext... Hierarchy... Expanded...B61H; protection of permanent way against weather influences Fulltext... Hierarchy... Expanded...E01B; rail cleaning, snow ploughs Fulltext... Hierarchy... Expanded...E01H)

|  | B61L |
GUIDING RAILWAY TRAFFIC: ENSURING THE SAFETY OF RAILWAY TRAFFIC (power supply lines for electrically-propelled vehicles Fulltext... Hierarchy... Expanded...B60M; vehicle signalling in general Fulltext... Hierarchy... Expanded...B60Q; brakes and auxiliary equipment Fulltext... Hierarchy... Expanded...B61H, Fulltext... Hierarchy... Expanded...B61K; point construction Fulltext... Hierarchy... Expanded...E01B; insulated rail joints Fulltext... Hierarchy... Expanded...E01B 11/00; optical devices in general Fulltext... Hierarchy... Expanded...G02; controlling in general Fulltext... Hierarchy... Expanded...G05; electric communication technique Fulltext... Hierarchy... Expanded...H04)

|  | B61L |
Note(s) This sub-class deals with: devices along the route interacting with trains; signals; operation of points and signals; interlocking; block systems; level crossings.