Electrical safety device

Patent · 01 January 1991

OSTI ID:867806

White, David B ^[1]

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1. Greenock, PA

An electrical safety device for use in power tools that is designed to automatically discontinue operation of the power tool upon physical contact of the tool with a concealed conductive material. A step down transformer is used to supply the operating power for a disconnect relay and a reset relay. When physical contact is made between the power tool and the conductive material, an electrical circuit through the disconnect relay is completed and the operation of the power tool is automatically interrupted. Once the contact between the tool and conductive material is broken, the power tool can be quickly and easily reactivated by a reset push button activating the reset relay. A remote reset is provided for convenience and efficiency of operation.

• Research Organization: WESTINGHOUSE ELECTRIC CORP
• DOE Contract Number: AC11-76PN00014
• Assignee: United States Department of Energy (Washington, DC)
• Patent Number(s): US 5014154
• OSTI ID: 867806
• Country of Publication: United States
• Language: English

Related Subjects

/361/340/
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automatically
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button
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remote
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