US PATENT SUBCLASS 340 / 545.2
.~.~.~.~ Specified sensor

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.~.~.~.~ Specified sensor {6}
547  DF  .~.~.~.~.~> Magnetic sensor
548  DF  .~.~.~.~.~> Plug or cord tension sensor
549  DF  .~.~.~.~.~> Rotatable sensor
545.3  DF  .~.~.~.~.~> Sensing of electromagnetic energy (e.g., light, infrared, or microwave)
545.4  DF  .~.~.~.~.~> Sensing of electrical parameter (e.g., piezoelectricity or capacitance)
545.5  DF  .~.~.~.~.~> Inertia-type sensor (e.g., mercury or pendulum switch)

DEFINITION

Classification: 340/545.2

Specified sensor:

(under subclass 545.1) Subject matter having specific detail of a device which is designated to produce an indicative signal in response to an event or stimulus within its detection zone.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

61.93, for such switches, per se.