The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 1990
Filed:
Nov. 14, 1989
Kazuhisa Aoki, Hikone, JP;
Abstract
An improved electrical appliance with short-circuit hazard protection includes a plug unit adapted to be connected to a source of electricity and a feed cord extending from the plug unit to the electrical appliance for supplying electric current thereto. The feed cord has a connector terminal by which the feed cord is rotatably or detachably coupled to the appliance. The appliance incorporates a first hazard sensor which detects an electrical hazard or short-circuit condition caused by moisture, water, or the like conductive medium. The plug units includes an interrupting circuit which disconnects the feed cord from the source of electricity in response to the detection of the hazard condition. The connector terminal of the feed cord is provided also with a second hazard sensor which detects a like hazard condition caused around the connector terminal and actuates the common interrupting circuit to disconnect the feed cord from the source of electricity, whereby assuring protection against such electrical hazard even when the connector terminal alone is exposed to the hazard condition.