Power tool safety device

Details Power tool safety device Power tool safety device

2007-05-01

2007-05-01

Gerrity, Stephen F. (Department: 3721)

Tool driving or impacting

Means to drive tool about an axis

Electric motor

C173S171000, C200S00100B

Reexamination Certificate

active

10947135

ABSTRACT:
A safety device for a power tool having an electric motor and a trigger to activate the motor via a primary trigger-activated switch, includes an auxiliary switch in circuit with the motor, an activator movable between a first position in which the auxiliary switch is opened by the activator and the activator prevents depression of the trigger, and a second position in which the auxiliary switch is closed by the activator and the activator allows depression of the trigger.

REFERENCES:
patent: 3467801 (1969-09-01), Matthews
patent: 4097704 (1978-06-01), Piber
patent: 4100383 (1978-07-01), Piber
patent: 4204580 (1980-05-01), Nalley
patent: 4277661 (1981-07-01), Riess
patent: 5346342 (1994-09-01), Winchester
patent: 6199642 (2001-03-01), Becker et al.
patent: 6489578 (2002-12-01), Jung et al.

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