US PATENT SUBCLASS 73 / 1.38
.~.~ Acceleration utilizing an inertial element


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

1.01  DF  INSTRUMENT PROVING OR CALIBRATING {13}
1.37  DF  .~ Speed, velocity, or acceleration {2}
1.38.~.~ Acceleration utilizing an inertial element {1}
1.39  DF  .~.~.~> Involving pendulum or impact


DEFINITION

Classification: 73/1.38

Accelerometer utilizing an inertial element:

(under subclass 1.37) Subject matter wherein the device being proven or calibrated comprises an inertial member having an

intrinsic or relational property which changes in response to a time rate of change of speed or velocity of a body which can be used to measure acceleration.

SEE OR SEARCH THIS CLASS, SUBCLASS:

491+, for an acceleration measuring apparatus or method including means retaining a reading of maximum acceleration.

503.3, for determining speed by utilizing a gyroscope for combining acceleration and time.

504.03, for using gyroscopic or Coriolis effect on an inertial element to determine both angular rate and linear acceleration.

652+, for an apparatus sensing vibrations by use of an inertial member.

866.2, for a process or an apparatus for measuring a time rate of change in a sensed condition not provided for elsewhere. SEE OR SEARCH CLASS

116, Signals and Indicators,

28+, for a mechanical indicator, per se, which provides a humanly perceptible signal in response to acceleration and includes no quantitative measuring means.

310, Electrical Generator or Motor Structure,

329, for an inertia operated mechanical energy coupling means for a piezoelectric element or device.

324, Electricity: Measuring and Testing,

162, for a purely electrical speed measuring means including an electrical accelerometer which senses acceleration by means other than an inertial element.

340, Communications: Electrical,

669, for an electrical indicator or alarm which provides a humanly perceptible signal in response to a predetermined acceleration and provides no indication of a quantitative measurement.

356, Optics: Measuring and Testing, for an apparatus or a process for determining acceleration by measuring visible light and involving no mechanical manipulation.

361, Electricity: Electrical Systems and Devices,

280+, for an acceleration responsive capacitor.