04967308 is referenced by 40 patents and cites 8 patents.

A safety device adapted for use in a hand held tool for minimizing electrical shock to a user includes a ground plane disposed inside the electrical tool, which, should the tool become immersed in water or become unreasonaly wet, provides a path for electrical current, which energizes a solenoid which, in turn, interrupts the AC power supply. The safety device is preferably encased in a variety of module. The safety device contains a power supply, such as a battery and/or electret, that is independent of the AC power supply. Thus, the safety device can be tripped even if the tool is not turned on.

Title
Enhanced safety device for an electrical appliance
Application Number
310225
Publication Number
4967308
Application Date
May 22, 1989
Publication Date
October 30, 1990
Inventor
Milton Morse
One Horizon Rd., Fort Lee, 07024
NJ, US
Agent
Arthur L Plevy
IPC
H02H 3/16
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