US PATENT SUBCLASS 337 / 114
.~ Expansible or vaporizable fluid-actuated (e.g., mercury vapor)

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

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
114.~ Expansible or vaporizable fluid-actuated (e.g., mercury vapor) {5}
115  DF  .~.~> With manual or other mechanical contact actuating means {3}
119  DF  .~.~> Utilizing capillary tube or bore means
120  DF  .~.~> With external heating means (external from fluid; may be the container)
121  DF  .~.~> With housing or casing
122  DF  .~.~> With contact or electrode structure or material (e.g., carbon)

DEFINITION

Classification: 337/114

(under subclass 14) Subject matter wherein the electrothermal responsive circuit opening or closing means consists of at least one element which utilizes a fluid medium capable of expanding or vaporizing upon the application of a voltage, potential or heating current thereto, the operation of the contact controlling means being accomplished either directly or through additional means, thereby opening or closing a circuit to be controlled.

SEE OR SEARCH THIS CLASS, SUBCLASS:

306+, below for similar devices with thermally responsive means.

SEE OR SEARCH CLASS

60, Power Plants,

632+, for one shot explosion actuated expansible chamber type motors.

92, Expansible Chamber Devices, appropriate subclasses for an expansible chamber device, per se. 99, Foods and Beverages: Apparatus,

325, for cooking apparatus with automatic control actuated by an expansible fluid.

200, Electricity: Circuit Makers and Breakers,

81+, for switches in which the operating means is responsive to pressure of a liquid, gas or vapor, the pressure being caused by a confined fluid or fluid flow.

219, Electric Heating,

490+, (particularly subclass 496) for electric heating devices with current regulation or current control means which may include pressure responsive devices and subclass 513 for electric heaters with automatic switching means comprising temperature responsive expansible fluid actuated devices.

236, Automatic Temperature and Humidity Regulation,

79+, for fluid operated motor means for automatic regulation systems.

307, Electrical Transmission or Interconnection Systems,

118, for fluid pressure actuated switching systems and subclass 144 for fluid pressure switch actuator, per se.

318, Electricity: Motive Power Systems, 481, for automatic motor control systems which are responsive to pressure in a fluid.

322, Electricity: Single Generator Systems,

35, for automatic generator control devices which are responsive to a fluid pressure.

340, Communications: Electrical,

592, for automatic alarm systems with an expanding fluid sensor.

374, Thermal Measuring and Testing,

201+, for expanding fluid type thermometers.