US PATENT SUBCLASS 105 / 197.05
.~.~ Sprung bolster

Current as of: June, 1999
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105 /   HD   RAILWAY ROLLING STOCK

157.1  DF  TRUCKS {27}
182.1  DF  .~ Bogie {13}
197.05.~.~ Sprung bolster {7}
197.1  DF  .~.~.~> Leaf and coil
197.2  DF  .~.~.~> Spring plankless
198  DF  .~.~.~> Rocking
198.1  DF  .~.~.~> Pneumatic spring
198.2  DF  .~.~.~> Bolster movement dampened by snubber {3}
198.6  DF  .~.~.~> Linear torsion spring
198.7  DF  .~.~.~> Nonmetallic spring or cushion

DEFINITION

Classification: 105/197.05

Sprung bolster:

(under subclass 182.1) Bogie including a wheel supported side frame structure extending parallel to a first rail over which the device is to travel, a resilient member supported thereby, and a rigid cross-member supported by the resilient member, said cross-member extending to a corresponding wheel supported side frame riding on a second rail parallel to the first.

SEE OR SEARCH CLASS

267, Spring Devices,

6+, for a spring device, per se, especially adapted for a vehicle bolster.