US PATENT SUBCLASS 246 / 143
.~ Manual actuation
Current as of:
June, 1999
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246 /
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RAILWAY SWITCHES AND SIGNALS
131
DF
INTERLOCKING
{8}
143
.~ Manual actuation {3}
*
DD
.~.~
> Switch stands {1}
146
DF
.~.~
> Electrical locking
147
DF
.~.~
> Mechanical locking {5}
DEFINITION
Classification: 246/143
(under subclass 131) Subject matter in which units are actuated by manual power transmitted from the signal-cabin by rods or cables.
SEE OR SEARCH THIS CLASS, SUBCLASS:
111, through 119, for manual interlocking at grade-crossings, and drawbridges.
144, and 145, for interlocked switchstands.
393+, for devices located at switches for their manual actuation.
489, for miscellaneous mechanism for manually operating switches or signals.
SEE OR SEARCH CLASS
74, Machine Element or Mechanism,
469+, for miscellaneous control lever and linkage systems.
