US PATENT SUBCLASS 318 / 505
.~ By means to space-discharge devices

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

494  DF  ARMATURE (OR PRIMARY) CIRCUIT CONTROL {9}
505.~ By means to space-discharge devices {2}
506  DF  .~.~> Plural, diverse or diversely connected or controlled space-discharge devices
507  DF  .~.~> Having discharge-control means (e.g., grids)

DEFINITION

Classification: 318/505

(under subclass 494) Subject matter in which a space-discharge device is connected in series or in parallel with the armature or primary circuit of the motor.

SEE OR SEARCH THIS CLASS, SUBCLASS:

132, for reciprocating or oscillating motor systems having space-discharge devices in the input circuit thereto.

138, for motor systems having space-discharge devices for commutating the current supplied to the motor.

504, for this subject matter where one or more space-discharge devices is a part of or forms a voltage converter (divider).

508, and the subclasses specified in the Notes thereto, for other motor systems having an impedance device in the armature or primary circuit of the electric motor.

786, 800, and 807, for this subject matter where the motor is an induction motor. SEE OR SEARCH CLASS

315, Electric Lamp and Discharge Devices: Systems, appropriate subclasses, for miscellaneous systems for controlling gas or vapor filled space-discharge devices.

323, Electricity: Power Supply or Regulation Systems,

227, and 291 for electric space discharge device systems for voltage magnitude control.

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, appropriate subclasses for miscellaneous space discharge device circuits.