US PATENT SUBCLASS 337 / 150
.~.~.~ Latching trip or holding means (actuated by condition by fuse element)

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

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
142  DF  .~ Fusible element actuated {15}
143  DF  .~.~ With manual or other mechanical contact control means {8}
150.~.~.~ Latching trip or holding means (actuated by condition by fuse element) {4}
151  DF  .~.~.~.~> Ratchet and pawl
152  DF  .~.~.~.~> Thin film or resoldering (e.g., eutetic alloy)
153  DF  .~.~.~.~> With external or auxiliary heating means
154  DF  .~.~.~.~> Tripping or release means

DEFINITION

Classification: 337/150

(under subclass 143) 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 capable of being tripped by a thermal current responsive fuse element. The contacts are generally held latched in a circuit closing position and tripped to open position upon operation of the fuse element.

(1) Note. For other latch or trip means used in devices of this class, see the subclasses listed under SEARCH THIS CLASS, SUBCLASS in subclass 46.

SEE OR SEARCH THIS CLASS, SUBCLASS:

70+, for latch or latch release means actuated by electrothermally responsive bimetallic elements.

128, for similar latch or latch release means actuated by longitudinally expansible elements.

356, for similar devices with thermally responsive bimetallic elements.