US PATENT SUBCLASS 246 / 257
FLUID-MOTOR ACTUATION

Current as of: June, 1999
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246 /   HD   RAILWAY SWITCHES AND SIGNALS

257FLUID-MOTOR ACTUATION {3}
258  DF  .~> Electric control {1}
260  DF  .~> Signals
261  DF  .~> Gates

DEFINITION

Classification: 246/257

(under the class definition) Actuating mechanism operated by fluid-pressure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

93+, 100+, 116, 139+, 258 to 261, 271+ and 361, for fluid-pressure-motor structure.