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:
Feb. 18, 2014
Filed:
Oct. 15, 2009
Shou-hua Zhang, Arcadia, CA (US);
Shou-Hua Zhang, Arcadia, CA (US);
Smiths Detection Inc., Germantown, MD (US);
Abstract
A detection and identification system includes a sensor unit () having a sensor array that detects and identifies at least one chemical included in an air flow. The system also includes a pump () that drives the air flow through the detection and identification system, in which the pump receives the air flow that has passed out of the sensor unit. The system further includes an adsorption unit () that dries and cleans the air flow within the detection and identification system, to obtain a substantially dry and clean air flow, in which the adsorption unit receives the air flow that has passed out of the pump. The system also includes at least one valve () that receives the substantially dry and clean air flow that has passed through the adsorption unit. The valve provides the substantially dry and clean air flow to the sensor unit in a close-loop circulation operation to thereby clean a sensor array. The system receives input air from an external environment and then to the sensor unit, and provides exhaust air out to the external environment, in an open-loop flow operation of the detection and identification system in which the input air sample is analyzed and identified.