Patent ID: 6591157
Filing Date: 2003-07-08
Classification: B26D,B26F,G05B

Abstract:
An apparatus for notifying machine operators of the necessity for preventive maintenance comprising:memory means for storing predetermined difficulty factors corresponding to the severity of particular machine operating conditions, said memory means also for storing maximum values at which maintenance should be performed on said machine; measurement means for sensing said machine operating conditions and the duration for which said machine functions under said operating conditions; adjustment means for quantifying said sensed operating condition for each machine use with respect to one of said difficulty factors most closely related to said operating condition; summation means for accumulating the quantified sensed operating conditions for a number of machine uses; comparison means for equating the quantified sensed operating conditions as accumulated by said summation means, to one of said stored maximum values most closely related to said sensed operating conditions; and an indicator for alerting an operator when said maximum value is attained.