US PATENT SUBCLASS 337 / 9
.~.~.~ Knife or blade switch

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

2  DF  WITH SEPARATE DISTINCT DIVERSE ART-TYPE SWITCHING DEVICE (E.G., FLUID- OR MECHANICAL-ACTUATED) {2}
4  DF  .~ Fusible element device with other {4}
8  DF  .~.~ Manually operable mechanical device {2}
9.~.~.~ Knife or blade switch

DEFINITION

Classification: 337/9

(under subclass 8) Subject matter wherein the manually operable other art device is specifically recited as a knife or blade switch wherein the movable element, a hinged blade, enters or embraces the contact clips.

SEE OR SEARCH CLASS

200, Electricity: Circuit Makers and Breakers,

554+, for mechanical knife switches which may be protected by fuses.