Router with improved safety system
First Claim
Patent Images
1. A router for cutting workpieces with one or more router bits, the router comprising:
- an operative structure configured to support a router bit in a nominal operating position to cut workpieces;
a motor assembly coupled to rotate at least a portion of the operative structure; and
a safety system including a detection subsystem configured to detect one or more dangerous conditions between an operator and a router bit supported by the operative structure, and a reaction subsystem configured to retract the router bit at least partially away from the nominal operating position of the router bit relative to the operative structure within approximately 10 milliseconds after one or more dangerous conditions are detected by the detection subsystem.
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Abstract
A router is described for cutting workpieces with router bits. The router includes a safety system configured to detect one or more dangerous conditions between a person and a router bit. The safety system includes a reaction subsystem configured to perform one or more predetermined actions in the event a dangerous condition is detected. In one embodiment, the safety system is configured to detect accidental contact between a person and the router bit, and then at least partially retract the router bit the person.
93 Citations
20 Claims
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1. A router for cutting workpieces with one or more router bits, the router comprising:
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an operative structure configured to support a router bit in a nominal operating position to cut workpieces;
a motor assembly coupled to rotate at least a portion of the operative structure; and
a safety system including a detection subsystem configured to detect one or more dangerous conditions between an operator and a router bit supported by the operative structure, and a reaction subsystem configured to retract the router bit at least partially away from the nominal operating position of the router bit relative to the operative structure within approximately 10 milliseconds after one or more dangerous conditions are detected by the detection subsystem. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. For use with a router adapted to rotationally drive a router bit, a method for minimizing injury from a router bit coupled to the router, the method comprising:
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detecting accidental contact between an operator and the router bit; and
at least partially retracting the router bit away from the operator within 10 milliseconds after accidental contact between the operator and the router bit is detected. - View Dependent Claims (9, 10)
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11. A router for cutting workpieces with one or more router bits, the router comprising:
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an operative structure including a rotatable shaft;
a motor assembly coupled to rotate the shaft; and
a safety system that includes a detection subsystem configured to detect accidental contact between an operator and a router bit coupled to the operative structure, where the safety system is configured to stop the rotation of the router bit coupled to the operative structure in the event the detection subsystem detects accidental contact between the operator and the router bit. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification