.~.~ Open secondary member or portion thereof with means to open or close the circuit thereto
DEFINITION
Classification: 318/819
Open secondary member or portion thereof with means to open or close the circuit thereto:
(under subclass 818) Subject matter wherein the circuit connected to the secondary member includes switch means to turn off or on the current in the secondary member or a portion thereof.
(1) Note. The secondary member portion may consist of one winding or a plurality of windings and the switch means may control the current through all of the windings or one or more windings.
(2) Note. The switch means includes controlled and uncontrolled electronic devices, mechanical and automatic switches which act only to open or close the secondary motor winding or a part of the secondary motor winding. The electronic devices include thyratrons, silicon-controlled rectifiers, silicon-controlled switches, and four-layered
diodes, but amplifier-type tube or solid-state devices which can act as a switch and additionally function as an amplifier are not included.
