The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 1997
Filed:
May. 16, 1994
Constantine D Capetanopolous, Dobbs Ferry, NY (US);
Patrick J Iannotta, Bellmore, NY (US);
Bryan S Hobbs, Chertsey, GB;
John R Finbow, Southampton, GB;
SEM Corporation, Westbury, NY (US);
Abstract
A gas sensing assembly from which a number of gas sensing devices can be constructed for determining the concentration of an active gas in a gas mixture. The assembly comprises a self-contained sensing unit including a sensing element at which active gas reacts and is consumed, an output signal being produced proportional to the rate of reaction of active gas. A number of different control members are provided each defining a respective gas diffusion barrier, each member being separately securable to the sensing unit and detachable therefrom while leaving the sensing unit intact to enable gas sensing devices of different sensitivities to be constructed from the same sensing unit.