(under subclass 6) Device provided with (1) means to sense a change in the operation of a lubrication system and means responsive to said change to affect the operation of the machine, (2) means to prevent abnormal pressures in a lubricating system or (3) means for indicating the operation of the machine or supply.
SEE OR SEARCH CLASS
123, Internal-Combustion Engines,
196, for lubrication systems combined with engines.
340, Communications: Electrical,
631, for electric indicator for machine lubricant; and subclasses 679+ for machine condition responsive indicating systems.
