Power equipment with detection and reaction systems

US9969014B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9969014-B2
Application numberUS-201615357928-A
CountryUS
Kind codeB2
Filing dateNov 21, 2016
Priority dateOct 1, 1999
Publication dateMay 15, 2018
Grant dateMay 15, 2018

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

Woodworking machines and safety methods for use with those machines are disclosed. The machines include a detection system adapted to detect one or more dangerous conditions and a reaction system associated with the detection system. The reaction system can include an explosive to trigger the system, and also can be configured to retract a cutting tool at least partially away from a cutting region upon detection of a dangerous condition by the detection system.

First claim

Opening claim text (preview).

The invention claimed is: 1. A table saw comprising: a circular blade configured to cut a workpiece; a detection circuit connected to the blade, where the detection circuit includes an oscillator that generates an oscillating signal, where the oscillating signal is imparted on the blade, where the detection circuit includes a controller that detects a change in the oscillating signal on the blade indicative of contact between a person and the blade, and where the detection circuit generates a detection signal when the change in the oscillating signal on the blade is detected; a firing circuit connected to the detection circuit to receive the detection signal, where the firing circuit includes a capacitor, and where the firing circuit discharges current from the capacitor upon receiving the detection signal; and an explosive or fusible member connected to the firing circuit to receive the current discharged from the capacitor and cause a specified action to mitigate possible injury from the contact.

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Frequently asked questions

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What does patent US9969014B2 cover?
Woodworking machines and safety methods for use with those machines are disclosed. The machines include a detection system adapted to detect one or more dangerous conditions and a reaction system associated with the detection system. The reaction system can include an explosive to trigger the system, and also can be configured to retract a cutting tool at least partially away from a cutting reg…
Who is the assignee on this patent?
Sd3 Llc, Sawstop Holding Llc
What technology area does this patent fall under?
Primary CPC classification B26D7/24. Mapped technology areas include Operations & Transport.
When was this patent published?
Publication date Tue May 15 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).