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:
May. 08, 2012
Filed:
Sep. 18, 2007
Applicants:
Francis Lawrence Leard, Sudbury, MA (US);
Hassan R. Manjunath, Nashua, NH (US);
James Edward Dogul, Hudson, NH (US);
Inventors:
Francis Lawrence Leard, Sudbury, MA (US);
Hassan R. Manjunath, Nashua, NH (US);
James Edward Dogul, Hudson, NH (US);
Assignee:
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
Apparatus and methods for using a tunable optical source in safety curtain applications provide for enhanced operation of the safety curtain. In an embodiment, a safety curtain includes a transmit unit and a receive unit to operate as the safety curtain, where a single tunable light source generates different wavelengths of light and a single detector is used to detect the generated light.