Patent ID: 7788973

Claim:
A pump or other suitable rotating device comprising: a bearing frame or housing having a combined fluid level sight gage and ultrasonic sensor arranged therein; the combined fluid level sight gage and ultrasonic sensor comprising a fluid level sight gage having a housing for containing a fluid for lubricating the pump or other suitable rotating device, the housing having a centerline for indicating a normal fluid level, the fluid level sight gage also having a sight glass arranged therein for viewing the level of the fluid therein; and the combined fluid level sight gage and ultrasonic sensor also comprising an ultrasonic sensor arranged in a side of the housing of the fluid level sight gage and positioned or arranged at a location in relation to the centerline of the fluid level sight gage which corresponds to a lowest safe operating fluid level, the ultrasonic sensor being responsive to the level of fluid in the housing of the fluid level sight gage, for providing an ultrasonic sensor signal containing information about an electronic annunciation of a high, normal or low fluid level in the bearing frame or housing of the fluid for lubricating the pump or other suitable rotating device that is based at least partly on the position of the ultrasonic sensor in relation to the centerline that corresponds to the lowest safe operating fluid level.