Couplings that are adapted for securing together cars and when coupled or during the coupling operation also coupling the train service pipe for air or steam.
(1) Note. Couplings to which are secured automatic devices for coupling air or steam pipes and in which the coupling thereof is independent of the coupling action of the car coupler will be found elsewhere. See the Search Class note below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
1.3+, for couplings of the type provided for herein (subclass 76) when claimed in combination with electrical connecting means.
SEE OR SEARCH CLASS
137, Fluid Handling,
347+, for valved couplings on railway car structure and subclasses 614+ for pipe couplings having plural serial valves.
251, Valves and Valve Actuation, 148+, for a valved pipe coupling.
285, Pipe Joints or Couplings,
24+, and 62+. See the (1) Note above.
439, Electrical Connectors,
191+, for combinations of electric connectors with fluid line conduits or couplings.
