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:
Jul. 27, 2010
Filed:
Sep. 30, 2005
Julie Anne Mills, Monona, WI (US);
Julie Anne Mills, Monona, WI (US);
General Electric Company, Schenectady, NY (US);
Abstract
An improved carbon dioxide absorber for use in a closed circuit patient breathing system has a canister insertable in the breathing circuit for receiving recirculating breathing gases. The canister contains a pelletized COabsorbent material that removes the COfrom the breathing gases passing through the absorber. A quantity of the COabsorbent material is treated with a chemical indicator such that the chemical indicator makes a color change indicative of the state of the absorptive capacity of the absorbent material. A separate quantity of the COabsorbent material is treated with a second chemical indicator. The second chemical indicator changes color to indicate the degree of dryness of the COabsorbent material. The second chemical indicator may comprise cobalt chloride and serves to indicate the potential for excessive heat generation and toxic gas generation conditions within the COabsorbent canister.