US PATENT SUBCLASS 73 / 1.51
.~.~.~.~ Resilient element

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

1.01  DF  INSTRUMENT PROVING OR CALIBRATING {13}
1.42  DF  .~ Timing apparatus (e.g., fuse, camera, or shutter) {2}
1.43  DF  .~.~ Chronometer (e.g., clock, watch, or watch unbalance) {5}
1.48  DF  .~.~.~ Using sound sensor or piezoelectric vibration sensor {2}
1.51.~.~.~.~ Resilient element

DEFINITION

Classification: 73/1.51

Resilient element:

(under subclass 1.48) Subject matter wherein either (a) the apparatus for proving or calibrating the chronometer or (b) the chronometer being proven or calibrated includes a means having a capacity of returning to an original form immediately upon the withdrawal of a force which causes compression or distortion.