US PATENT SUBCLASS 246 / 147
.~.~ Mechanical locking

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

131  DF  INTERLOCKING {8}
143  DF  .~ Manual actuation {3}
147.~.~ Mechanical locking {5}
148  DF  .~.~.~> Preliminary {1}
150  DF  .~.~.~> Tappets
151  DF  .~.~.~> Detector bars
152  DF  .~.~.~> Compensators {1}
155  DF  .~.~.~> Rod-saving devices {2}

DEFINITION

Classification: 246/147

(under subclass 143) Subject matter in which the locking mechanism is effected by mechanical connections between the operating levers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

15+, 112, 113, 116, 117, 118+, 131, 132, 136+, 139, 142, 144+, 156, 160, and 164, for details of mechanical locking.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

519+, and 543+, for details of hand-levers secured to quandrants by hand-actuated latches.