US PATENT SUBCLASS 318 / 490
WITH SIGNALS, METERS, RECORDERS OR TESTING 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

490WITH SIGNALS, METERS, RECORDERS OR TESTING DEVICES


DEFINITION

Classification: 318/490

(under the class definition) Subject matter in which means, in addition to the motor supply and/or control system, are provided for signalling, recording, metering or measuring, or testing conditions in or about the motor and/or its system of supply and/or control, or the operation or the state of operation of the motor.

(1) Note. The line that exists between the class (Class 318) and other classes which relate to signalling, recording, metering or measuring, or testing, per se, is, in general, as follows: (1) Where the claimed subject matter only nominally includes the motor or a conventional part or circuit thereof (such, for example, as "a motor", and "electric motor", a "motor armature", a "motor field winding", etc.) in combination with signalling, recording, metering or measuring, or testing means set forth in detail, classification will be on the basis of testing, metering,

signalling, etc., in the classes appropriate thereto; (2) Where the claimed subject matter includes detailed motor control and/or supply circuits or where parts of the motor or its supply and/or control circuits are claimed which do not pertain directly, immediately and only to the signalling, metering or measuring, or testing means (claimed broadly or in detail), classification is in this class. In other words where the motor and its supply and/or control circuits are significantly claimed (i.e., the claims are substantially and particularly limited to other than a mere or nominal motor circuit) classification is in this class; but when the motor or its circuit is included only nominally in the manner of an example or as a broad or general illustration, classification is in some other class appropriate to the signalling, recording, etc.; (3) Systems involving mere detecting or condition-sensing means but with no scale or indicator attached thereto are not classified in this subclass.

SEE OR SEARCH CLASS

73, Measuring and Testing, appropriate subclasses for miscellaneous measuring and testing apparatus. See

862, for dynameters.

116, Signals and Indicators, appropriate subclasses for miscellaneous signals and indicators. 235, Registers, appropriate subclasses, for miscellaneous counting and registering apparatus and systems.

340, Communications: Electrical, appropriate subclasses, for miscellaneous electric signaling systems.

346, Recorders, appropriate subclasses, for miscellaneous recording apparatus and systems.