US PATENT SUBCLASS 324 / 426
.~ Using a battery testing device

Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

425  DF  ELECTROLYTE PROPERTIES {3}
426.~ Using a battery testing device {10}
427  DF  .~.~> To determine ampere-hour charge capacity {1}
429  DF  .~.~> To determine load/no-load voltage
430  DF  .~.~> To determine internal battery impedance
431  DF  .~.~> With temperature compensation of measured condition
432  DF  .~.~> To determine battery electrolyte condition
433  DF  .~.~> To compare battery voltage with a reference voltage
434  DF  .~.~> To determine plural cell condition
435  DF  .~.~> Having particular meter scale or indicator
436  DF  .~.~> Including oscillator in measurement circuit
437  DF  .~.~> Including probe structure

DEFINITION

Classification: 324/426

Using a battery testing device:

(under subclass 425) Subject matter in which the testing device used is specifically designed to test the condition of or properties of a battery.

(1) Note. This subclass contains, for example, means for testing the conditions of dry cells by means which measure terminal voltage under load.

SEE OR SEARCH THIS CLASS, SUBCLASS:

76+, for electric meters, per se, such as voltmeters which can be utilized to measure battery voltage. Note especially subclass 145.

SEE OR SEARCH CLASS

320, Electricity: Battery or Capacitor Charging or Discharging, appropriate subclass for an indicator for a battery condition in combination with a battery or capacitor charging or discharging circuit.

340, Communications: Electrical,

636, for means for permanently indicating the condition of a battery. 429, Chemistry: Electrical Current Producing Apparatus,

Product and Process,

90+, for testing and indicating where specific battery structure is claimed.