The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 2010
Filed:
Jun. 04, 2007
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);
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);
SD3, LLC, Tualatin, OR (US);
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.