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. 30, 1991
Filed:
Feb. 12, 1990
Brian R Cage, Shawnee, KS (US);
Arbor D Drinkwine, Kansas City, MO (US);
Midwest Research Institute, Kansas City, MO (US);
Abstract
An instrument for removing chemical vapors from air and concentrating the chemical vapors in a liquid scrubbing medium has been invented. A cylindrical receptacle receives a preselected amount of scrubbing liquid. Air is pulled tangentially into the cylinder through an inlet slit and swirls toward the cylinder top, carrying the liquid with it so that the cylinder wall is coated with the liquid. At the end of a sampling cycle, the air flow is shut off and the liquid is allowed to settle before being drained off for analysis. A cleaning cycle between sampling cycles is possible, during which the cylinder can be heated by an electrical heater cable.