(0)B61F:0/1:

(0)B61F:0/1:

IPC6

SECTION B - PERFORMING OPERATIONS; TRANSPORTING

RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES,...

B61F

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B61F001/00 - B61F005/52

B 61 F

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 B 60; axles, wheels B 60 B; vehicle tyres B 60 C)

Underframes (making railway vehicle underframes by forging or pressing B 21 K 7/12)

with a single central sill

of triangulated type

specially adapted for locomotives or motor-driven railcars

End constructions

Attaching or supporting vehicle body structure

Types of bogies (B 61 F 5/00 takes precedence)

with more than one axle

with driven axles or wheels

with three or more axles

without driven axles or wheels

with three or more axles

specially modified for carrying adjacent vehicle bodies of articulated trains

specially modified for reducing air resistance

with a separate axle for each wheel

Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves

Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies

Bolster supports or mountings (side bearings B 61 F 5/14)

incorporating metal springs

incorporating rubber springs

incorporating fluid springs

incorporating dampers

Centre bearings or other swivel connections between underframes and bolsters or bogies

with springs allowing transverse movements

Guiding of the vehicle underframes with respect to the bogies

Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes

Mounting or securing axle-boxes in vehicle or bogie underframes

Axle-boxes integral with, or directly secured to, vehicle or bogie underframes

Axle-boxes mounted for movement under spring control in vehicle or bogie underframes

Guides, e.g. plates, for axle-boxes

Wedge mechanisms for adjusting clearance between underframes and axles

Arrangements for equalising or adjusting the load on wheels or springs, e.g. yokes

Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves, e.g. sliding axles, swinging axles

Bogies with side frames mounted for longitudinal relative movements

Adjustment controlled by buffer or coupling gear

Adjustment controlled by movements of vehicle body

Adjustment controlled by a sliding axle under the same vehicle underframe

Trailing or leading bogies for locomotives or motor-driven railcars (B 61 F 5/40 takes precedence) [2]

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