US PATENT SUBCLASS 337 / 14
ELECTROTHERMALLY ACTUATED SWITCHES

Current as of: June, 1999
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337 /   HD   ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES

14ELECTROTHERMALLY ACTUATED SWITCHES {9}
15  DF  .~> Shunt or short circuit completion devices {4}
21  DF  .~> Conductive fluid devices
22  DF  .~> Fluorescent lamp-starting devices {3}
28  DF  .~> Space discharge device (gaps, lightning arrester, etc.) {4}
35  DF  .~> Plural diverse similar art-type devices in single switch
36  DF  .~> With bimetallic elements (i.e., motion takes place in a plane at right angles to its major axis) {10}
114  DF  .~> Expansible or vaporizable fluid-actuated (e.g., mercury vapor) {5}
123  DF  .~> With longitudinally expansible solid element (e.g., rod, wire strip, etc.) {7}
142  DF  .~> Fusible element actuated {15}

DEFINITION

Classification: 337/14

(under the class definition) Devices relating to structure operative to open or close an electric circuit or circuits and the combination of those devices; the operating means whereby the opening or closing function is accomplished by a thermal device directly inserted in the circuit and traversed

by the controlling current. The circuit generally is the circuit which is to be controlled.

(1) Note. The electrothermal actuated switches of subclasses 14+ are distinguished from the thermally actuated switches in subclasses 298+ in that in the latter group the devices are principally responsive to heat from an external source, for instance the heat in a surrounding medium.

SEE OR SEARCH THIS CLASS, SUBCLASS:

2+, for electrothermal switches combined with diverse art type switches.

SEE OR SEARCH CLASS

99, Foods and Beverages: Apparatus, 324+, for cooking apparatus with electrothermal control.

219, Electric Heating,

482+, for electrothermally controlled heating devices and subclasses 507+ for heating devices.

313, Electric Lamp and Discharge Devices, appropriate subclasses, especially

11+, for discharge devices with temperature modifying means.

314, Electric Lamp and Discharge Devices: Consumable Electrodes,

89+, for glow discharge devices with thermostatic operator means.

315, Electric Lamp and Discharge Devices: Systems, appropriate subclasses for discharge device systems with electrothermal control means combined with a discharge device load.

318, Electricity: Motive Power Systems, and

471+, for thermally controlled automatic starting and/or stopping systems.

320, Electricity: Battery or Capacitor Charging or Discharging,

166+, for charging or discharging a capacitor, per se. 322, Electricity: Single Generator Systems,

33+, for thermally responsive automatic control means for a single generator.

335, Electricity: Magnetically Operated Switches, Magnets,

and Electromagnets,

23, for circuit breakers with combined magnets and thermal latch or trip means and subclasses 141+ for electromagnetically actuated switches combined with electrothermal actuating means.

340, Communications: Electrical,

584+, for alarms and signal systems which are temperature controlled.

361, Electricity: Electrical Systems and Devices,

161+, for thermal controls for relays, subclasses 247+ for ignition systems with a spark gap igniter, and subclasses 627+ for distribution boards with fuse means.

388, Electricity: Motor Control Systems, art collections 934 for motor control systems responsive to a thermal condition.