×

Volume calculator for incentive spirometer

  • US 4,241,739 A
  • Filed: 11/13/1978
  • Issued: 12/30/1980
  • Est. Priority Date: 11/13/1978
  • Status: Expired due to Term
First Claim
Patent Images

1. A device for use in conjunction with a flow meter having an indicator which moves to a position corresponding to the flow rate through said flow meter, said device comprising:

  • a housing containing a detector means, a timing means, a processing means, a first and a second storage means and an alphanumeric display means;

    said first storage means for receiving and storing information representative of the minimum flow rate required through said flow meter to move said indicator to said position;

    said detector means for detecting and indicating the presence of said indicator at said position;

    said timing means coupled to said detector means for measuring the time during which said detector means indicates the presence of said indicator at said position;

    said second storage means for receiving and storing information representative of a desired minimum volume;

    said processing means coupled to said timing means and to said first storage means for generating information representative of the cumulative volume flow through said flow meter, said processing means further performing a comparison of said generated information and the information stored in said second storage means; and

    said alphanumeric display means coupled to said processing means for displaying an indication in the event said generated information is representative of a volume equal to or greater than the volume represented by the information stored in said second storage means.

View all claims
  • 7 Assignments
Timeline View
Assignment View
    ×
    ×