Gaseous product detecting device

Details Gaseous product detecting device Gaseous product detecting device

2003-10-08

2010-02-23

Larkin, Daniel S (Department: 2856)

Measuring and testing

Gas analysis

Detector detail

C073S031010, C073S031020, C073S031030

Reexamination Certificate

active

07665345

ABSTRACT:
A gaseous product detecting device (1; 20; 30; 40; 70) has a measuring cell (6; 59; 60), a filtering element (3; 45) for retaining particulate present in the air entering the measuring cell (6; 59, 60), and a detecting element (13; 50, 56) housed inside the measuring cell (6; 59, 60). A wall (9; 49, 61; 79, 82) of the measuring cell (6; 59, 60) is movable in fluidtight manner between a withdrawn position, in which the measuring cell (6; 59, 60) has a maximum volume, and a forward position, in which the measuring cell (6; 59, 60) has a minimum volume and the detecting element (13; 50, 56) is prevented from being impressed by resting against a shutter surface (5a;43a,49b;82a) of the measuring cell (6; 59, 60).

REFERENCES:
patent: 2802132 (1957-09-01), Kuhns
patent: 4059406 (1977-11-01), Fleet
patent: 4297871 (1981-11-01), Wright
patent: 4770027 (1988-09-01), Ehara et al.
patent: 4976135 (1990-12-01), Stock
patent: 6006583 (1999-12-01), Hayashi

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