Explosion-proof portable gas detector

Details Explosion-proof portable gas detector Explosion-proof portable gas detector

2006-08-08

2006-08-08

Larkin, Daniel S. (Department: 2856)

Measuring and testing

Instrument casing

C073S023310, C073S031050, C073S031020, C073S031030

Reexamination Certificate

active

07086283

ABSTRACT:
The invention provides an explosion-proof portable gas detector that is easy to be fabricated as a small-sized one handy to carry and high in convenience for use, and has explosion-proofness sufficient in a countermeasure against static electricity and high in reliability. The explosion-proof portable gas detector has at least gas sensors, a signal processing circuit, a display mechanism and a power source part within a housing in the form of a slim and flat box holdable by grasping with a hand. The whole or a part of the housing is formed of a static charge-controlling resin material having an insulating resistance value of at most 1 GΩ and a comparative tracking index of at least 90 V.

REFERENCES:
patent: 6606897 (2003-08-01), Koyano et al.
patent: 6754067 (2004-06-01), Turner et al.
patent: 2003/0138329 (2003-07-01), Koyano et al.
patent: 08-007901 (1996-01-01), None
patent: 2000-209250 (2000-07-01), None
patent: 2001-176366 (2001-06-01), None
patent: 2002-309097 (2002-10-01), None
patent: 2003-314184 (2003-09-01), None

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