G - Physics – 01 – N
Patent
G - Physics
01
N
273/77, 73/83
G01N 3/38 (2006.01) G01P 15/135 (2006.01)
Patent
CA 1157292
ABSTRACT OF THE DISCLOSURE An apparatus for determining levels of physical loads, having a housing with two switching elements dis- posed therein and electrically coupled to an indicator and through a cut-out switch to a power supply unit. The apparatus further comprises a seismic mass constituted by a permanent magnet and secured to the housing by means of elastic suspension elements. The switching elements are positioned along the direction of movement of the seismic mass. The indicator includes three indicating ele- ments indicating, respectively, the minimum, the optimum and the maximum level of physical load. One of the switch- ing elements is a group of magnetically operated hermetic- ally sealed changeover contacts, while the other switch- ing element is a pair of magnetically operated hermetical- ly sealed normally open contacts, said group of changeover contacts including a normally open contact connected to one of the terminals of the indicator element indicating the minimum level of physical load, a normally closed con- tact connected to one of the terminals of the indicator element indicating the optimum level of physical load, and a common contact connected to one of the terminals of the power supply unit and to one of the contacts of said pair of contacts the other contact of which is connected to one of the terminals of the indicator element indicat- ing the maximum level of physical load. The other termin- als of the indicating elements of the indicator through the cut-out switch are connected to the other terminal of the power supply unit. The seismic mass is positioned in the zone of operation of said group of changeover con- tacts.
368495
Katsygin Vitaly V.
Lopato Georgy P.
Sidorenko Georgy I.
Stankevich Vladimir I.
Belorussky Nauchno-Issledovatelsky Institut Kardiologii
Marks & Clerk
LandOfFree
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