US PATENT SUBCLASS 73 / 514.39
.~ Magnetic speed measuring or mechanical speed measuring with ancillary magnetic means or with ancillary electrical means

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

Internet Version by PATENTEC © 1999      Terms of Use


73 /   HD   MEASURING AND TESTING

488  DF  SPEED, VELOCITY, OR ACCELERATION {29}
514.39.~ Magnetic speed measuring or mechanical speed measuring with ancillary magnetic means or with ancillary electrical means {1}
519.01  DF  .~.~> Eddy current drag means (e.g., drag cup) {1}

DEFINITION

Classification: 73/514.39

Magnetic speed measuring or mechanical speed measuring with ancillary magnetic means or with ancillary electrical means:

(under subclass 488) A process or an apparatus comprising: (a) a magnetic means used for detecting the rate of change in position of the body or (b) a mechanical speed measuring means responsive to the rate of change in position of the body combined with magnetic means or electrical means, wherein the magnetic means or the electrical means is subordinate to the mechanical speed measuring means.

(1) Note. The apparatus herein does not include magnetic means for producing an electrical signal representative of speed.

SEE OR SEARCH THIS CLASS, SUBCLASS:

504.01, for measuring angular rate by using wave motion.

504.02+, for measuring angular rate by gyroscopic or Coriolis effect.

504.17, for measuring angular rate by means of a fluid vortex rate sensor.

514.16+, for an acceleration measuring apparatus which senses acceleration by means of an inertial element and which has a specific type of electric or magnetic sensor and, in particular, subclass 514.31 for an acceleration measuring apparatus which senses acceleration by means of an inertial element that has a magnetic sensor. SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

160+, for an electrical measuring speed device including an electrical accelerometer other than one which senses acceleration by means of an inertial element, in particular, subclasses 173+ for purely electric speed measuring using a magnetic sensor and subclass 207.25 for magnetically measuring rotary displacement.

340, Communications: Electrical,

671+, for an electrical indicating system providing a humanly perceptible electrical signal in response to a predetermined angular velocity wherein no indication of quantitative measurement is provided.

356, Optics: Measuring and Testing,

27+, for determining speed by measuring a characteristic of visible light.