US PATENT SUBCLASS 191 / 33 R
.~ Trolley

Current as of: June, 1999
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191 /   HD   ELECTRICITY: TRANSMISSION TO VEHICLES

22 R  DF  CONDUCTORS {5}
33 R.~ Trolley {9}
34  DF  .~.~> Nonunderrunning
35  DF  .~.~> Guarded
36  DF  .~.~> Special intersections
37  DF  .~.~> Crossings
38  DF  .~.~> Switches
39  DF  .~.~> Section insulators
40  DF  .~.~> Supports {3}
44.1  DF  .~.~> Splicers
33 PM  DF  .~.~> Cables made of multiple material

Unofficial Alpha Subclasses: R PM

DEFINITION

Classification: 191/33

(under subclass 22) Conductors placed adjacent the vehicle path at such a height as to clear persons and ordinary objects on the ground and presenting a substantially continuous exposed surface for contact with the collector.

(1) Note. The conductor element per se is generally inherently flexible and is tensioned to present a rigid contact surface.

SEE OR SEARCH CLASS

104, Railways,

124,.

246, Railway Switches and Signals,

9, 65, 67 and 69, and indented subclasses.