Power tool safety mechanisms

Details Power tool safety mechanisms Power tool safety mechanisms

2008-05-20

2008-05-20

Ashley, Boyer D. (Department: 3724)

Cutting

With randomly actuated stopping means

Responsive to work sensing means

C083S072000, C083S076100, C083S076800, C083S370000, C083SDIG002, C192S12900A

Reexamination Certificate

active

07373863

ABSTRACT:
A sensing mechanism (12) for detecting user contact with an active portion (26) of the power tool (10) is provided. In addition, a safety mechanism (14) for preventing prolonged user contact with the active portion (26) of a power tool (10) is provided. The safety mechanism (14) is configured to actuate upon receipt of a signal from the sensing mechanism (12). According to a first aspect, the safety mechanism (14) is arranged to rapidly displace the active portion (26) away from a user extremity. Alternatively, according to a second aspect, the safety mechanism (14) is arranged to rapidly urge an extremity of the user away from the active portion (26) of the power tool (10).

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Operator Injury Mitigation Using Electronic Sensing and Mechanical Braking and Decoupling Devices in Handheld Circular Saws, Erin F. Eppard.

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