Patents Assigned to Envirometrics, Inc.
  • Air monitoring cassette
    Patent number: 5205155
    Abstract: An air monitoring cassette for monitoring airborne particulate wherein the cassette includes a housing defining an airway therethrough. The housing includes an outlet end for connection to a pump. The housing further includes an inlet end opposite the outlet end and a filter to collect particulate thereon intermediate said outlet end and inlet end. The inlet end includes an outwardly flared inside surface so that particulate laden air can be drawn through the cassette and non-uniform deposition of particulate on the filter reduced.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: April 27, 1993
    Assignee: Envirometrics, Inc.
    Inventor: Patrick H. Cooper