US PATENT SUBCLASS 337 / 156
.~.~.~ Manually operated shunting, disconnect or load-break device

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}
156.~.~.~ Manually operated shunting, disconnect or load-break device {1}
157  DF  .~.~.~.~> Mechanical fuse link rupturing means

DEFINITION

Classification: 337/156

(under subclass 143) Subject matter wherein the mechanical contact control means consists of means independent of the fuse structure which is adapted to be manually manipulated at will to (1) complete a shunt circuit around the fusible element, (2) isolated the circuit or apparatus protected by a fuse after the current has been interrupted by the fuse or (3) cause the circuit to be opened through the fusible device without actually blowing the fusible element. The patents found here generally include the open cut out or disconnect type fuse devices combined with means whereby an operator from a distance, by means of a switch stick, may insert a mechanical circuit completion conductive device between the main contacts or may directly break the circuit through the fuse.

SEE OR SEARCH CLASS

218, High-Voltage Switches With Arc Preventing and Extinguishing Devices,

8+, for auxiliary type switches and subclasses 43+ for air-current blowout type switches.

439, Electrical Connectors, especially

507+, for an electrical connector comprising a jumper.