Peak expiratory flow meter

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Description

FIG. 1 is a top and side perspective view of a peak expiratory flow meter, showing my new design;

FIG. 2 is a side view thereof;

FIG. 3 is a side view thereof rotated 90 degrees about the length axis from the view of FIG. 2;

FIG. 4 is a rear view thereof; and,

FIG. 5 is a front view thereof.

Referenced Cited
U.S. Patent Documents
3958565 May 25, 1976 Wright
5246010 September 21, 1993 Gazzara et al.
5562101 October 8, 1996 Hankinson et al.
Patent History
Patent number: D396014
Type: Grant
Filed: Mar 5, 1997
Date of Patent: Jul 14, 1998
Inventor: Warren V. Bigelow (Bloomington, MN)
Primary Examiner: Antoine Duval Davis
Attorney: Norman B. Rainer
Application Number: 0/67,095
Classifications
Current U.S. Class: Volume, Flow Or Rate (D10/96)
International Classification: 1004;