David Furry

US Patent:

8426813, Apr 23, 2013

Filed:

May 2, 2012

Appl. No.:

13/462609

Inventors:

David W Furry - Blanket TX, US

Assignee:

Leak Surveys, Inc. - Early TX

International Classification:

G01J 5/02

US Classification:

250330, 25033903

Abstract:

A method of visually detecting a leak of a chemical emanating from a component includes aiming a passive infrared camera system towards the component; filtering an infrared image with an optical bandpass filter, the infrared image being that of the leak; after the infrared image passes through the lens and optical bandpass filter, receiving the filtered infrared image with an infrared sensor device; electronically processing the filtered infrared image received by the infrared sensor device to provide a visible image representing the filtered infrared image; and visually identifying the leak based on the visible image. The passive infrared camera system includes: a lens; a refrigerated portion including the infrared sensor device and the optical bandpass filter (located along an optical path between the lens and the infrared sensor device). At least part of a pass band for the optical bandpass filter is within an absorption band for the chemical.

US Patent:

20060091310, May 4, 2006

Filed:

Dec 10, 2005

Appl. No.:

11/298862

Inventors:

David Furry - Blanket TX, US

International Classification:

G01J 5/02

US Classification:

250330000, 250339030

Abstract:

A method of visually detecting a leak of a chemical emanating from a component. The method includes: aiming a passive infrared camera system towards the component; filtering an infrared image with an optical bandpass filter, the infrared image being that of the leak; after the infrared image passes through the lens and optical bandpass filter, receiving the filtered infrared image with an infrared sensor device; electronically processing the filtered infrared image received by the infrared sensor device to provide a visible image representing the filtered infrared image; and visually identifying the leak based on the visible image. The passive infrared camera system includes: a lens; a refrigerated portion including therein the infrared sensor device and the optical bandpass filter (located along an optical path between the lens and the infrared sensor device). At least part of a pass band for the optical bandpass filter is within an absorption band for the chemical.

US Patent:

20130250124, Sep 26, 2013

Filed:

Mar 20, 2013

Appl. No.:

13/847901

Inventors:

David W. Furry - Blanket TX, US

Assignee:

Leak Surveys, Inc. - Early TX

International Classification:

H04N 5/33

US Classification:

348164

Abstract:

A method of visually detecting a leak of a chemical emanating from a component. The method includes: aiming a passive infrared camera system towards the component; filtering an infrared image with an optical bandpass filter, the infrared image being that of the leak; after the infrared image passes through the lens and optical bandpass filter, receiving the filtered infrared image with an infrared sensor device; electronically processing the filtered infrared image received by the infrared sensor device to provide a visible image representing the filtered infrared image; and visually identifying the leak based on the visible image. The passive infrared camera system includes: a lens; a refrigerated portion including therein the infrared sensor device and the optical bandpass filter (located along an optical path between the lens and the infrared sensor device). At least part of a pass band for the optical bandpass filter is within an absorption band for the chemical.

US Patent:

20170122833, May 4, 2017

Filed:

Nov 11, 2016

Appl. No.:

15/350000

Inventors:

- Early TX, US
David W. Furry - Blanket TX, US

Assignee:

Leak Surveys, Inc. - Early TX

International Classification:

G01M 3/04
G01N 33/00
H04N 5/33

Abstract:

A method of visually detecting a leak of a chemical emanating from a component includes aiming a passive infrared camera system towards the component; filtering an infrared image with an optical bandpass filter, the infrared image being that of the leak; after the infrared image passes through the lens and optical bandpass filter, receiving the filtered infrared image with an infrared sensor device; electronically processing the filtered infrared image received by the infrared sensor device to provide a visible image representing the filtered infrared image; and visually identifying the leak based on the visible image. The passive infrared camera system includes: a lens; a refrigerated portion including the infrared sensor device and the optical bandpass filter (located along an optical path between the lens and the infrared sensor device). At least part of a pass band for the optical bandpass filter is within an absorption band for the chemical.