Patents Assigned to Roger Peterson Family Limited
  • Automatic multi-sorbent tube air sampler
    Patent number: 6477906
    Abstract: A sampling system for capturing samples of trace elements in ambient air comprises a multi-port valve coupled to a plurality of sorbent tubes. Each tube is connected to the multi-port valve by means of pairs of the valve ports. The multi-port valve is constructed and operated in a predetermined sequence to create a flow path through the multi-port valve. The flow path directs an air sample to only one connected sorbent tube at a given time and for a given time interval.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: November 12, 2002
    Assignee: Roger Peterson Family Limited
    Inventor: Roger Peterson