Inspiratory muscle exerciser or similar article

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Description

FIG. 1 is a perspective view of an inspiratory muscle exerciser or similar article showing our new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a left end elevational view thereof;

FIG. 4 is a right end elevational view thereof; and,

FIG. 5 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
D284095 June 3, 1986 Ashby
D304232 October 24, 1989 Fuller
433418 July 1890 Nutz
940735 November 1909 Schaeffer et al.
1244661 October 1917 Teter
1392700 October 1921 Oyen
2292474 August 1942 Paxton
3298362 January 1967 Lippitt, Jr. et al.
3958565 May 25, 1976 Wright
4054134 October 18, 1977 Kritzer
4062358 December 13, 1977 Kritzer
4207884 June 17, 1980 Isaacson
4221381 September 9, 1980 Ericson
4226233 October 7, 1980 Kritzer
4444202 April 24, 1984 Rubin et al.
4739987 April 26, 1988 Nicholson
Foreign Patent Documents
656937 December 1964 BEX
804907 January 1969 CAX
Patent History
Patent number: D315583
Type: Grant
Filed: Mar 15, 1988
Date of Patent: Mar 19, 1991
Assignee: Healthscan, Inc. (Cedar Grove, NJ)
Inventors: Douglas A. Larson (River Forest, IL), Thomas L. Clanton (Worthington, OH)
Primary Examiner: Charles A. Rademaker
Law Firm: Schweitzer Cornman & Gross
Application Number: 7/168,787
Classifications
Current U.S. Class: D21/191