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:
Mar. 04, 2003
Filed:
Sep. 13, 2000
Richard M. Pavkov, Plymouth, MI (US);
Thomas A. Armer, Cupertino, CA (US);
Nahed M. Mohsen, Farmington, MI (US);
Sheffield Pharmaceuticals, Inc., St. Louis, MO (US);
Abstract
Airflow in the exhaust piece of a fluid delivery device is forced through a series of gaps to achieve a split airflow. One component has a velocity and direction to impact on the source of the aerosol thus sweeping and entraining the aerosol off the aerosol generator into the directional air. The other airflow is used to protect the internal surfaces from aerosol deposition. The two air flows then recombine and are swept over a three dimensional surface or porous medium, used as an impaction or filtration site for determining the amount and particle size of the entrained aerosol at the exhaust exit.