US PATENT SUBCLASS 337 / 301
.~ With mechanical timing means (e.g., clockwork)

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

Internet Version by PATENTEC © 1999      Terms of Use


337 /   HD   ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES

298  DF  THERMALLY ACTUATED SWITCHES {7}
301.~ With mechanical timing means (e.g., clockwork) {2}
302  DF  .~.~> Periodic or cyclically operative {1}
304  DF  .~.~> With predetermined operative temperature range {1}

DEFINITION

Classification: 337/301

(under subclass 298) Subject matter including mechanical means, such as a clock or motor whereby the contacts of a controlled circuit are maintained closed for a definite period of time, are opened and/or closed at regular cyclic intervals, the operating range of a thermostatic device (i.e. the minimum and maximum operative temperature at which it operates) is varied at predetermined intervals of time, or whereby the thermostatic device may be prevented from functioning during certain hours. The motor structure for operating the timing means may be electric, magnetic, or spring wound.

(1) Note. For other delaying or timing means used in the devices of this class, see the subclasses listed under SEARCH THIS CLASS, SUBCLASS in subclass 81.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers, particularly

19.01+, for periodically operated circuit breakers, per se.

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets, 68+, for electromagnetic switches with motor operator.