Robert L Chamberlain

US Patent:

6997090, Feb 14, 2006

Filed:

Feb 23, 2004

Appl. No.:

10/785361

Inventors:

Stephen F. Gass - Wilsonville OR, US
David A. Fanning - Vancouver WA, US
J. David Fulmer - Tualatin OR, US
David S. D'Ascenzo - Portland OR, US
Jonathan N. Betts-LaCroix - Chatsworth CA, US
Robert L. Chamberlain - Raleigh NC, US
Joel F. Jensen - Redwood City CA, US
Andrew L. Johnston - Redwood City CA, US
Sung H. Kim - Palo Alto CA, US
Anwyl M. McDonald - Palo Alto CA, US
Benjamin B. Schramm - Los Gatos CA, US

Assignee:

SD3, LLC - Wilsonville OR

International Classification:

B26D 5/00
B26D 7/24
B27B 5/18

US Classification:

83 58, 83 621, 83 72, 834713, 834771, 834772, 83473, 83488, 83490, 83581, 83DIG 1, 192129 R, 192138, 30388, 144382, 144356, 1441545

Abstract:

A saw with a safety system is disclosed. The safety system includes a detection system adapted to detect contact between a person and a blade while the blade is moving. The safety system further includes a brake system adapted to engage the blade and to stop the blade when the detection system detects contact between the person and the blade.

US Patent:

7100483, Sep 5, 2006

Filed:

Aug 13, 2001

Appl. No.:

09/929240

Inventors:

Stephen F. Gass - Wilsonville OR, US
Andrew L. Johnston - Redwood City CA, US
Joel F. Jensen - Redwood City CA, US
Sung H. Kim - Palo Alto CA, US
David A. Fanning - Vancouver WA, US
Robert L. Chamberlain - Raleigh NC, US

Assignee:

SD3, LLC - Wilsonville OR

International Classification:

B26D 5/00

US Classification:

83 58, 83DIG 1, 8352212, 192129 R

Abstract:

Cutting machines with high-speed safety systems, and firing subsystems used in high-speed safety systems, are disclosed. The cutting machines may include a detection system adapted to detect a dangerous condition between a cutting tool and a person. A reaction system performs a specified action, such as stopping the cutting tool, upon detection of the dangerous condition. A fusible member or explosive may be used to trigger the reaction system to perform the specified action. A firing subsystem may be used to fuse the fusible member or fire the explosive upon detection of the dangerous condition.

US Patent:

7210383, May 1, 2007

Filed:

Aug 13, 2001

Appl. No.:

09/929426

Inventors:

Stephen F. Gass - Wilsonville OR, US
Robert L. Chamberlain - Raleigh NC, US
Benjamin B. Schramm - Los Gatos CA, US
Joel F. Jensen - Redwood City CA, US
Jonathan N. Betts-LaCroix - Chatsworth CA, US

Assignee:

SD3, LLC - Wilsonville OR

International Classification:

B26D 5/00

US Classification:

83 58, 83 621, 8352212, 83DIG 1, 192129 R

Abstract:

Woodworking machines including conductive cutters adapted to cut workpieces, and motors adapted to drive the cutters are disclosed. The machines also include a contact detection system adapted to detect contact between a person and the cutter, and to distinguish contact between the person and the cutter from contact between the workpiece and the cutter. The machines further include a reaction system adapted to cause a predetermined action to take place upon detection of contact between the person and the cutter by the contact detection system.

US Patent:

7225712, Jun 5, 2007

Filed:

Aug 13, 2001

Appl. No.:

09/929234

Inventors:

Stephen F. Gass - Wilsonville OR, US
Robert L. Chamberlain - Raleigh NC, US
J. David Fulmer - Tualatin OR, US
Joel F. Jensen - Redwood City CA, US
Benjamin B. Schramm - Los Gatos CA, US

Assignee:

SD3, LLC - Wilsonville OR

International Classification:

B26D 1/14
B27B 5/00

US Classification:

83 621, 834713, 834771, 83DIG 1

Abstract:

A woodworking machine including a detection system adapted to detect a dangerous condition between a person and a working portion of the machine is disclosed. The machine includes a reaction system associated with the detection system to cause a predetermined action to take place relative to the working portion upon detection of the dangerous condition. A motion detection system is adapted to detect motion of the working portion and to disable the reaction system when the working portion is not moving. The motion detection system may include a sensor, such as a Hall effect sensor, an electromagnetic field sensor, an optical sensor, or an electrical sensor. The woodworking machine may take the form of a saw, the working portion may be a blade adapted to cut when spinning, and the dangerous condition may be a person contacting the blade.

US Patent:

7600455, Oct 13, 2009

Filed:

Aug 13, 2001

Appl. No.:

09/929237

Inventors:

Stephen F. Gass - Wilsonville OR, US
J. David Fulmer - Tualatin OR, US
Joel F. Jensen - Redwood City CA, US
Benjamin B. Schramm - Los Gatos CA, US
Robert L. Chamberlain - Raleigh NC, US

Assignee:

SD3, LLC - Tualatin OR

International Classification:

B26D 5/00
B27B 13/14
B26D 1/14

US Classification:

83 58, 83 621, 83DIG 1, 834771, 834772, 83490, 83788

Abstract:

Woodworking machines including cutting tools and motors adapted to drive the cutting tools are disclosed. The machines also include a detection system adapted to detect a dangerous condition between the cutting tool and a person, and a reaction system adapted to perform a specified action upon detection of the dangerous condition. The machines further include a control system adapted to test the operability of at least a portion of the detection system and/or the reaction system. The control system is adapted to disable the motor if the tested portion is inoperable.

US Patent:

7681479, Mar 23, 2010

Filed:

Jun 4, 2007

Appl. No.:

11/810196

Inventors:

Stephen F. Gass - Wilsonville OR, US
Robert L. Chamberlain - Raleigh NC, US
J. David Fulmer - Tualatin OR, US
Joel F. Jensen - Redwood City CA, US
Benjamin B. Schramm - Los Gatos CA, US

Assignee:

SD3, LLC - Tualatin OR

International Classification:

B26D 1/14
B27B 5/00

US Classification:

83 621, 83 58, 83DIG 1, 834713, 834771

Abstract:

A woodworking machine including a detection system adapted to detect a dangerous condition between a person and a working portion of the machine is disclosed. The machine includes a reaction system associated with the detection system to cause a predetermined action to take place relative to the working portion upon detection of the dangerous condition. A motion detection system is adapted to detect motion of the working portion and to disable the reaction system when the working portion is not moving. The motion detection system may include a sensor, such as a Hall effect sensor, an electromagnetic field sensor, an optical sensor, or an electrical sensor. The woodworking machine may take the form of a saw, the working portion may be a blade adapted to cut when spinning, and the dangerous condition may be a person contacting the blade.

US Patent:

7921754, Apr 12, 2011

Filed:

Oct 9, 2009

Appl. No.:

12/587695

Inventors:

Stephen F. Gass - Wilsonville OR, US
J. David Fulmer - Tualatin OR, US
Joel F. Jensen - Redwood City CA, US
Benjamin B. Schramm - Los Gatos CA, US
Robert L Chamberlain - Raleigh NC, US

Assignee:

SD3, LLC - Tualatiin OR

International Classification:

B26D 5/00
B27B 13/14

US Classification:

83 58, 83 621, 83DIG 1, 834771, 834772, 83490, 83788

Abstract:

Woodworking machines including cutting tools and motors adapted to drive the cutting tools are disclosed. The machines also include a detection system adapted to detect a dangerous condition between the cutting tool and a person, and a reaction system adapted to perform a specified action upon detection of the dangerous condition. The machines further include a control system adapted to test the operability of at least a portion of the detection system and/or the reaction system. The control system is adapted to disable the motor if the tested portion is inoperable.

US Patent:

8051759, Nov 8, 2011

Filed:

Mar 22, 2010

Appl. No.:

12/661766

Inventors:

Stephen F. Gass - Wilsonville OR, US
Robert L. Chamberlain - Raleigh NC, US
J. David Fulmer - Tualatin OR, US
Joel F. Jensen - Redwood City CA, US
Benjamin B. Schramm - Los Gatos CA, US

Assignee:

SD3, LLC - Tualatin OR

International Classification:

B26D 1/14
B27B 5/00

US Classification:

83 621, 834713, 838771, 83DIG 1

Abstract:

A method of controlling a woodworking machine having a movable cutting tool. The method monitors a signal for a change indicative of a dangerous condition between the cutting tool and a person, senses movement of the cutting tool, and performs an action to mitigate the dangerous condition when the signal change and movement of the cutting tool are both detected. A woodworking machine including a detection system adapted to detect a dangerous condition between a person and a working portion of the machine and then to perform some action to mitigate the dangerous condition is also disclosed. A motion detection system is adapted to detect motion of the working portion and to disable the reaction system when the working portion is not moving.