Frederick J Schuler

US Patent:

20130075615, Mar 28, 2013

Filed:

Sep 23, 2011

Appl. No.:

13/242677

Inventors:

CHRISTOPHER D. STARTA - PITTSBURGH PA, US
ROBERT E. UBER - PITTSBURGH PA, US
THOMAS TRAUTZSCH - CRANBERRY TOWNSHIP PA, US
FREDERICK J. SCHULER - WEXFORD PA, US

International Classification:

G01J 5/08
G01N 21/01

US Classification:

2503417, 250353

Abstract:

A closed path infrared sensor includes an enclosure, a first energy source within the enclosure, at least a second energy source within the enclosure, at least one detector system within the enclosure and a mirror system external to the enclosure and spaced from the enclosure. The mirror system reflects energy from the first energy source to the at least one detector system via a first analytical path and reflects energy from the second energy source to the at least one detector system via a second analytical path. Each of the first analytical path and the second analytical path are less than two feet in length.

US Patent:

58048251, Sep 8, 1998

Filed:

May 7, 1997

Appl. No.:

8/852981

Inventors:

Frederick J. Schuler - Lakeville MN

Assignee:

Detector Electronics Corporation - Minneapolis MN

International Classification:

G08B 1712

US Classification:

25033915

Abstract:

A radiation detector having wide-range sensitivity is provided. In accordance with one embodiment of the invention, a radiation detector for detecting a radiation condition is provided. The radiation detector includes a plurality of sensors each of which detect radiation in a spectral band and output an analog signal in response to the amount of radiation in the spectral band, a converter system associated with each of the sensors for converting each analog signal to a digital signal, and a processor coupled to the converter system for using the digital signals to output a detection signal. The converter system has a sensitivity range which includes a minimum magnitude and a maximum magnitude of the analog signals. The processor can detect the radiation condition in an environment which concurrently induces the minimum magnitude in the analog signal of one of the sensors, and the maximum magnitude in the analog signal of a different one of the sensors. The radiation detector may, for example, be a fire detector which detects fire conditions such as unwanted or potentially dangerous fires or flames.

US Patent:

59950080, Nov 30, 1999

Filed:

May 7, 1997

Appl. No.:

8/852086

Inventors:

John D. King - Roseville MN
Frederick J. Schuler - Lakeville MN

Assignee:

Detector Electronics Corporation - Minneapolis MN

International Classification:

G08B 1712

US Classification:

340578

Abstract:

An optical fire detector employs two or more sensors operating a different spectral bands. The spectral bands are selected to have approximately coincident cut-off wavelengths in order to make the detector's ability to positively identify a fire more uniform over its field of view. The use of three overlapping spectral bands provides the detector with enhanced detection capabilities for large, hot fires that behave like black body radiators.

US Patent:

20140306112, Oct 16, 2014

Filed:

Jun 27, 2014

Appl. No.:

14/317070

Inventors:

- Cranberry Township PA, US
ROBERT E. UBER - PITTSBURGH PA, US
THOMAS TRAUTZSCH - CRANBERRY TOWNSHIP PA, US
FREDERICK J. SCHULER - WEXFORD PA, US

International Classification:

G01N 21/59

US Classification:

2503385

Abstract:

A closed path infrared sensor includes an enclosure, a first energy source within the enclosure, at least a second energy source within the enclosure, at least one detector system within the enclosure and a mirror system external to the enclosure and spaced from the enclosure. The mirror system reflects energy from the first energy source to the at least one detector system via a first analytical path and reflects energy from the second energy source to the at least one detector system via a second analytical path. Each of the first analytical path and the second analytical path are less than two feet in length.