US PATENT SUBCLASS 324 / 160
ELECTRICAL SPEED MEASURING

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

160ELECTRICAL SPEED MEASURING {7}
161  DF  .~> Speed comparing means
162  DF  .~> With acceleration measuring means
163  DF  .~> Including speed analog electrical signal generator {2}
166  DF  .~> Including speed-related frequency generator {5}
176  DF  .~> Including object displacement varied variable circuit impedance
177  DF  .~> Including motor current or voltage sensor
178  DF  .~> Including "event" sensing means {2}

DEFINITION

Classification: 324/160

(under the class definition) Subject matter wherein are provided processes or means to produce an electrical signal representative of the time rate of change of position (speed) of a physical element and to indicate, in response to said signal, said time rate.

SEE OR SEARCH CLASS

73, Measuring and Testing,

178+, for navigational speed measuring devices such as ship's logs, leeway incidence or rate of climb; subclasses 861+, for volume or rate of flow meters; subclasses 488+, for mechanical speed measuring devices and indented subclasses 519.01+, for permanent magnet type speedometers.

340, Communications: Electrical,

441, and 446, for vehicle speed actuated signals and subclasses 670+, for speed actuated signals and alarms in general.

342, Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation), 104+, for radar type systems which determine the velocity of an object.

346, Recorders,

18, for recorders combined with a speed indicator or alarm.

356, Optics: Measuring and Testing,

27+, for velocity or velocity/height measuring systems including optical sighting systems.

361, Electricity: Electrical Systems and Devices,

51, and subclasses 236+ for control systems responsive to speed.

364, Electrical Computers and Data Processing Systems,

528.39, for speed control.

702, Data Processing: Measuring, Calibrating, or Testing,

141, and 142+ for acceleration and speed measuring systems, respectively.