![]() After signal loss for 25 micro seconds (µs), the detector will fire. If a human contacts the blade, the signal will fall below the threshold. A plate on the other side of the blade picks up the signal and sends it to a threshold detector. The signal is transferred to the blade by capacitive coupling. Īn oscillator generates a 12-volt, 200- kilohertz (kHz) pulsed electrical signal, which is applied to a small plate on one side of the blade. The design takes advantage of the difference in conductance and capacitance between wood and flesh. The operator suffers a minor instead of serious injury. ![]() The manufacturer states the saw stops in less than five milliseconds, and angular momentum retracts the blade into the table. Product Saw Stop table saw used at former TechShop in Redwood City California The company was founded in 2000 to sell table saws that feature a patented automatic braking system that stops the blade upon contact with skin or flesh. SawStop is an American table saw manufacturer headquartered in Tualatin, Oregon. TTS Tooltechnic Systems Holding AG (Germany) Steve Gass, David Fanning, and David Fulmer (cofounders)
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