Safety device for activating electric tools

Details Safety device for activating electric tools Safety device for activating electric tools

2005-04-12

2005-04-12

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Switch activation inhibitor

Actuator blocking device

C200S322000, C200S332200, C030S381000, C030S382000

Reexamination Certificate

active

06878888

ABSTRACT:
A safety device includes a trigger for activating a first switch and a brake device for braking the output shaft of the electric tool. The trigger is controlled by a safety button that pivots a pivotal member that is engaged with a rotatable member when an intermediate member of the brake device is shifted by operating the brake device. The rotatable member matched with the pivotal member is rotated to activate a second switch. The electric power is provided to the output shaft when both the first and second switches are activated.

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patent: 6469269 (2002-10-01), Jong
patent: 6548776 (2003-04-01), Jong

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