Power cutting tool comprising a radar sensing system

Details Power cutting tool comprising a radar sensing system Power cutting tool comprising a radar sensing system

2006-07-06

2008-09-09

Choi, Stephen (Department: 3724)

Cutting

With randomly actuated stopping means

C083S076100, C083S370000, C083S477200, C083SDIG002

Reexamination Certificate

active

07421932

ABSTRACT:
A power cutting tool having a movable blade, such as a table saw, comprising a radar sensing system for movement of an object in a region near the blade is disclosed. The radar sensing system emits a radio frequency wave and receives wave energy reflected by the object. The system measures the Doppler shift of the received wave energy to detect the presence of a fast moving object in a zone near the blade. When such a condition is detected, a reaction system can be activated to mitigate the condition.

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