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.:

US 9366621 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 14, 2016

Filed:

Mar. 15, 2013
Applicant:

Zolo Technologies, Inc., Boulder, CO (US);

Inventors:

Jim Howell, Louisville, CO (US);

Bernard Patrick Masterson, Louisville, CO (US);

Rod Harris, Fort Collins, CO (US);

David Giltner, Boulder, CO (US);

Atilio Jobson, Boulder, CO (US);

Michael John Estes, Longmont, CO (US);

Andrew D. Sappey, Lakewood, CO (US);

Assignee:

Zolo Technologies, Inc., Louisville, CO (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/55 (2014.01); G01N 21/39 (2006.01); G01N 21/84 (2006.01); F23M 11/04 (2006.01); F23N 5/08 (2006.01); F23M 20/00 (2014.01); G01J 3/02 (2006.01); G02B 5/122 (2006.01); G01J 3/42 (2006.01);
U.S. Cl.
CPC ...
G01N 21/39 (2013.01); F23M 11/045 (2013.01); F23M 20/00 (2015.01); F23N 5/082 (2013.01); G01N 21/84 (2013.01); F23N 2029/00 (2013.01); F23N 2900/05005 (2013.01); G01J 3/021 (2013.01); G01J 3/0289 (2013.01); G01J 3/42 (2013.01); G01N 2021/399 (2013.01); G01N 2201/0612 (2013.01); G02B 5/122 (2013.01);
Abstract

A method of monitoring combustion properties in an interior of a furnace is described. A beam of light is projected through a pitch optic including a pitch collimating lens residing outside the boiler interior. The pitch collimating lens projects the beam through a penetration into the boiler interior. The beam of light projected by the pitch collimating lens is reflected from at least one in-furnace retro-reflector, and received with a catch optic substantially identical to the pitch optic residing outside the boiler interior. The pitch optic and the catch optic may be embodied in the same pitch/catch optic. The pitch collimating lens may also be steered toward another of the at least one in-furnace retro-reflectors. Combustion properties may be calculated for each retro-reflector based on retro-reflector zones within the furnace.


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