US PATENT SUBCLASS 340 / 545.5
.~.~.~.~.~ Inertia-type sensor (e.g., mercury or pendulum switch)

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
541  DF  .~.~ Intrusion detection {8}
545.1  DF  .~.~.~ Door or window movement {6}
545.2  DF  .~.~.~.~ Specified sensor {6}
545.5.~.~.~.~.~ Inertia-type sensor (e.g., mercury or pendulum switch)

DEFINITION

Classification: 340/545.5

Inertia-type sensor (e.g., mercury or pendulum switch):

(under subclass 545.2) Subject matter in which the movement is detected by a switch which is capable of sensing acceleration, shock, vibration, and abrupt change in velocity.

SEE OR SEARCH CLASS

73, Measuring and Testing,

488+, for mechanically measuring and testing of speed, velocity, or acceleration, and 570+ for mechanically measuring and testing of vibration.