H - Electricity – 02 – P
Patent
H - Electricity
02
P
310/42, 318/87
H02P 3/00 (2006.01) H01H 35/06 (2006.01) H02K 11/00 (2006.01) F02B 1/04 (2006.01)
Patent
CA 1147016
ABSTRACT OF THE DISCLOSURE A rotor of a motor has a bearing mounted thereon, the bearing having a tab which is urged in one direction by the fluid friction of the lubricant in the bearing, the tab being urged against a spring, the tab actuating a micro- switch. The force exerted by the tab on the spring is a function of the rotor speed. Upon reduction of rotor speed the spring urges the tab rearwardly so that the micro-switch open circuits in turn disconnecting power from the motor which comes to a standstill. - 1 -
347982
Bowey John J.
Fetherstonhaugh & Co.
LandOfFree
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