US PATENT SUBCLASS 104 / 172.1
.~ Chain
Current as of: June, 1999
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| 104 / | HD | RAILWAYS |
|
| 165 | DF | TRACTION {8} |
| 172.1 |  | .~ Chain {4} |
| 172.2 | DF | .~.~> Tow pin or mast |
| 172.3 | DF | .~.~> Beneath vehicle |
| 172.4 | DF | .~.~> Suspended |
| 172.5 | DF | .~.~> Chain construction |
DEFINITION
Classification: 104/172.1
CHAIN:
(under subclass 165) Car-propelling means in which the moving element along the trackway effecting the movement of a car comprises a flexible series of joined links carrying means for selectively engaging a car or adapted to be selectively engaged by a car-carried mechanism.