US PATENT SUBCLASS 337 / 70
.~.~.~ Latch or latch-release means

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

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
36  DF  .~ With bimetallic elements (i.e., motion takes place in a plane at right angles to its major axis) {10}
37  DF  .~.~ With manual or other mechanical contact controlling means {12}
70.~.~.~ Latch or latch-release means {7}
71  DF  .~.~.~.~> Plural or responsive to diverse effects
72  DF  .~.~.~.~> With reclosing or reset means {1}
74  DF  .~.~.~.~> Trip-free
75  DF  .~.~.~.~> Bimetallic element unitary with or comprising latch means
76  DF  .~.~.~.~> Performs dual functions (e.g., main contact)
77  DF  .~.~.~.~> With external or auxiliary heater
78  DF  .~.~.~.~> Utilizing plural bimetallic elements

DEFINITION

Classification: 337/70

(under subclass 37) Subject matter wherein the mechanical structure includes significant details of operating means whereby the contacts may be retained in a first condition by a latch or detent adapted to be released by the operation of an electrothermal current actuated device. The contacts are usually held latch in a circuit closing position and tripped to open position.

(1) Note. Latches or trips for devices of this class are provided for in many subclasses herein. See under SEARCH THIS CLASS, SUBCLASS below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

46, for a list of subclasses providing for latches, trips or holding means therefor for devices of this class.

128+, for similar devices with longitudinally expansible electrothermal responsive actuating elements.

356+, for similar devices with thermally responsive bimetallic elements.

SEE OR SEARCH CLASS 200, Electricity: Circuit Makers and Breakers, appropriate subclasses, especially

3, 81, and 318+, for mechanical switch operators with thermally responsive latch trip means.

219, Electric Heating,

510+, for electrical heaters with electrothermally actuated switches in the supply circuit utilizing mechanical operating means with a latch.

236, Automatic Temperature and Humidity Regulation, appropriate subclasses, especially

3+, 32, 41+, 46, and 91+, for automatic temperature control circuits utilizing thermostatic latch or trip means.

335, Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,

21+, 141+, 167+, and 172+ for electrothermally responsive bimetallic latch or trip means for operation with electromagnetic switches.