Brake mechanism for power equipment
First Claim
Patent Images
1. A woodworking machine comprising:
- a rotatable blade having one or more teeth;
a detection system associated with the blade and configured to detect one or more dangerous conditions; and
a brake mechanism configured to stop the rotation of the blade if one of the dangerous conditions is detected, where the brake mechanism includes at least one brake pawl configured to pivot into the teeth of the blade.
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Accused Products
Abstract
Woodworking machines are disclosed having cutting tools adapted to cut workpieces. The machines include a detection system adapted to detect one or more dangerous conditions between a person and the cutting tool. The machines also include a brake mechanism having one or more braking components adapted to engage and stop the cutting tool in response to the detection of a dangerous condition.
165 Citations
26 Claims
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1. A woodworking machine comprising:
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a rotatable blade having one or more teeth;
a detection system associated with the blade and configured to detect one or more dangerous conditions; and
a brake mechanism configured to stop the rotation of the blade if one of the dangerous conditions is detected, where the brake mechanism includes at least one brake pawl configured to pivot into the teeth of the blade. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A woodworking machine comprising:
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a cutting tool having one or more teeth;
a motor configured to drive the cutting tool;
a detection system adapted to detect one or more dangerous conditions between a person and the cutting tool; and
a brake mechanism including a brake pawl movable into contact with the cutting tool so that a tooth-engaging portion of the brake pawl binds against the teeth of the cutting tool to stop movement of the cutting tool when the detection system detects at least one of the dangerous conditions;
where the tooth-engaging portion of the brake pawl is formed of metal. - View Dependent Claims (10, 11, 12, 14, 16, 17, 18, 19)
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13. A woodworking machine comprising:
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a cutter adapted to cut a workpiece and including at least two cutting surfaces;
a contact detection system adapted to detect contact between a person and the cutter; and
a brake system adapted to stop the cutter upon detection of such contact by the contact detection system, where the brake system includes a metal pawl adapted to engage the cutting surfaces on the cutter.
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15. A woodworking machine, comprising:
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a movable cutting tool for cutting workpieces;
at least one motor configured to drive the cutting tool;
a detection system configured to detect one or more dangerous conditions between a person and the cutting tool; and
a brake mechanism configured to stop movement of the cutting tool upon detection of one of the dangerous conditions by the detection system;
where the brake mechanism includes one or more metal braking components configured to move into contact with, and bind against, the cutting tool to stop movement of the cutting tool.
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20. A woodworking machine, comprising:
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a movable cutting tool having one or more teeth;
a motor configured to drive the cutting tool;
a detection system configured to detect one or more dangerous conditions between a person and the cutting tool; and
a brake mechanism including at least one brake pawl configured to engage the cutting tool upon detection of one of the dangerous conditions by the detection system, and to pivot tightly into, and bind against, the teeth to stop the movement of the cutting tool. - View Dependent Claims (21)
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22. A woodworking machine, comprising:
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a movable cutting tool;
a motor configured to drive the cutting tool;
a contact detection system configured to detect contact between a person and the cutting tool;
a movable brake component configured to stop movement of the cutting tool, where the brake component has a first region spaced-apart from a second region;
a biasing mechanism configured to engage the brake component at the first region and urge the brake component toward the cutting tool; and
a restraining mechanism configured to engage the brake component at the second region and hold the brake component away from the cutting tool until contact between a person and the cutting tool is detected by the contact detection system. - View Dependent Claims (23, 24, 25, 26)
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Specification