MAGNETIC THRESHOLD DEVICE Russian patent published in 2014 - IPC H01H35/14 

FIELD: instrumentation.

SUBSTANCE: magnetic threshold device comprises a permanent magnet, magnet cores adjacent to its poles and forming a working gap to place the anchor in it, the stop of the initial position of the anchor and the rod of magnetically soft material mounted in one of the magnetic cores with the ability to move parallel to the magnetisation direction of the permanent magnet. Each magnetic core is formed with a projection facing into the working gap, and the rod is made with the end part of the variable cross section and is mounted with the ability to move inside the opening made in the other magnetic core.

EFFECT: improving the accuracy of triggering the device, reduction of complexity of the magnetic effort adjustment and improvement of mass-dimensional characteristics of the device.

2 dwg