IP Library › Granted Patent US 8,402,869
Granted Patent B2
US 8,402,869 · App. 12/807,147 · Granted Mar 26, 2013

Brake mechanism for power equipment

Inventors: Stephen F. Gass (Wilsonville, OR); Joel F. Jensen (Redwood City, CA); Anwyl M. McDonald (Palo Alto, CA); David S. D'Ascenzo (Portland, OR); Andrew L. Johnston (Redwood City, CA)
Assignee: SD3, LLC
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Quick Facts
Patent No.
US 8,402,869
App. No.
12/807,147
Granted
Mar 26, 2013
Kind
B2
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.

Claims (11)

1. A method for minimizing potential injuries from a woodworking machine having a rotatable blade with one or more teeth, the method comprising:

detecting one or more dangerous conditions between a person and the blade;

stopping the rotation of the blade if one of the dangerous conditions is detected by pivoting a brake into the teeth of the blade; and

configuring the brake in the saw so that the brake self-locks against the blade upon contact with the teeth.

2. A method for minimizing potential injuries from a woodworking machine having a rotatable blade with one or more teeth, the method comprising:

detecting one or more dangerous conditions between a person and the blade;

decelerating the rotation of the blade if one of the dangerous conditions is detected by pivoting a pawl into the teeth of the blade; and

configuring the pawl in the saw so that the pawl self-locks against the blade upon contact with the teeth.

3. A method for minimizing potential injuries from a woodworking machine having a rotatable blade with one or more teeth, the method comprising:

detecting one or more dangerous conditions between a person and the blade; and

a step for stopping the rotation of the blade if one of the dangerous conditions is detected by pivoting a brake into the teeth of the blade so that the brake self-locks against the blade upon contact with the teeth.

Assignments (5)
CHANGE OF NAME Recorded Nov 4, 2017
From: SD3, LLC
To: SAWSTOP HOLDING LLC
Reel/Frame 044367/0140 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 11, 2013
From: GASS, STEPHEN F.; D'ASCENZO, DAVID S.
To: SD3, LLC
Reel/Frame 029992/0841 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 14, 2013
From: MCDONALD, ANWYL M.
To: SD3, LLC
Reel/Frame 029827/0352 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 14, 2013
From: JOHNSTON, ANDREW L.
To: SD3, LLC
Reel/Frame 029827/0355 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 14, 2013
From: JENSEN, JOEL J.
To: SD3, LLC
Reel/Frame 029827/0363 →
Continuity (186)
Continuation 11796819 · Apr 30, 2007
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