US PATENT SUBCLASS 184 / 68
.~.~.~ Thermostats

Current as of: June, 1999
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184 /   HD   LUBRICATION

14  DF  LUBRICATORS {18}
65  DF  .~ Gravity feed {9}
66  DF  .~.~ Automatic cutoff {7}
68.~.~.~ Thermostats

DEFINITION

Classification: 184/68

The valve is caused to operate by the expansion of some metal, which expansion is caused by the heat generated by the friction of the bearing to which the lubricator is attached.