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:
Nov. 27, 2007
Filed:
Apr. 16, 2004
John K. Overby, Nottingham, PA (US);
Stephen A. Mastro, Glen Mills, PA (US);
John K. Overby, Nottingham, PA (US);
Stephen A. Mastro, Glen Mills, PA (US);
United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A passive sensor housing has an air gap formed therein between a collimating lens and a lens focused mirror reflecting optical light signals transmitted through the lens into the air gap within which smoke is received through screened openings in the housing. The optical light signals which are generated within an opto-electronics unit are returned thereto by reflection through the air gap into a fiber cable connected to the collimating lens of the sensor and to an optical coupler within the opto-electronic unit to which generated light signals are delivered from a light emitting diode and returned from the sensor for delivery to a receiver within which such signals are processed into an output signal reflecting smoke density within the air gap.