Chamber for gas detector

Details Chamber for gas detector Chamber for gas detector

2006-04-25

2006-04-25

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

C250S573000, C250S339130, C356S437000

Reexamination Certificate

active

07034304

ABSTRACT:
A gas sensor, which could be a sensor of combustible gases, incorporates a diffusion chamber having symmetrical sensing and reference portions. A common source emits infrared-type radiant energy symmetrically into the two portions. Each portion incorporates a curved reflective surface which reflects incident infrared onto a respective sensor. Each sensor has a filter which passes a different selected band of energy. A fluid, such as gas being sensed, passes laterally through the chamber.

REFERENCES:
patent: 4008394 (1977-02-01), Risgin et al.
patent: 4500207 (1985-02-01), Maiden
patent: 4520265 (1985-05-01), Griggs et al.
patent: 4578762 (1986-03-01), Wong
patent: 4709150 (1987-11-01), Burough et al.
patent: 4772790 (1988-09-01), Aldridge
patent: 5041723 (1991-08-01), Ishida et al.
patent: 5163332 (1992-11-01), Wong
patent: 5220402 (1993-06-01), Harvey
patent: 5444249 (1995-08-01), Wong
patent: 5488227 (1996-01-01), Sweet
patent: 5585635 (1996-12-01), Graham
patent: 5721430 (1998-02-01), Wong
patent: 5781306 (1998-07-01), Hartig et al.
patent: 5811812 (1998-09-01), Williams et al.
patent: 5834777 (1998-11-01), Wong
patent: 5850354 (1998-12-01), Bramley et al.
patent: 5889199 (1999-03-01), Wong et al.
patent: 6067840 (2000-05-01), Chelvayohan et al.
patent: 6151952 (2000-11-01), Mathews et al.
patent: 6469303 (2002-10-01), Sun et al.
patent: 6528420 (2003-03-01), Tong et al.
patent: 6534769 (2003-03-01), Graham
patent: 2001/0048079 (2001-12-01), Brunamoti et al.
patent: 2002/0104967 (2002-08-01), Kouznetsov
patent: 61281966 (1986-12-01), None

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