US PATENT SUBCLASS 212 / 93
.~.~.~.~ Cable
Current as of:
June, 1999
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212 /
HD
TRAVERSING HOISTS
71
DF
OVERHEAD
{7}
76
DF
.~ Cable {8}
87
DF
.~.~ Draft-rope, hoist-rope traverse {5}
92
DF
.~.~.~ Gravity return {1}
93
.~.~.~.~ Cable
DEFINITION
Classification: 212/93
Cable:
(under subclass 92) Systems of the type comprising a carriage, a hoisting cable which moves the carriage in one direction, and a gravity-actuated cable for moving it in the opposite direction.