CHIP ALARM Russian patent published in 2014 - IPC F16N29/04 

FIELD: machine building.

SUBSTANCE: alarm is designed to detect presence of magnetic metal chips in oil. The alarm comprises an alarm plug and a valve built into a body of a unit and providing for access of working medium of the unit to the working end of the alarm plug. The alarm plug includes a body of non-magnetic material, which is connected to a valve, is made as disassembled, with an inner functional group of parts separated from the body, which includes a permanent magnet, a sleeve from conducting magnetic material, a covering magnet, an insulator and the second external sleeve from conducting material, which covers an insulator. At the same time the external sleeve by its bottom is fixed to the partition of the body by means of screws installed in the cavity of the alarm plug at the side of the socket slot. Between the body and the external sleeve there is a sealing ring. The magnet, the internal sleeve and the insulator are arranged concentrically and installed flush at the side of the working end of the alarm plug. Wires arranged in the cavity of the body of the alarm plug at the opposite end and connecting contacts of the socket slot with elements of the alarm plug are equipped with a duplicating set.

EFFECT: reliability, repairability.

3 cl, 8 dwg