Disposable respiratory mask

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Description

FIG. 1 is a top plan view of a disposable respiratory mask, illustrated in a folded condition, showing my new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is an end elevation thereof;

FIG. 4 is a front perspective view thereof, disclosing the mask in an unfolded condition;

FIG. 5 is a rear perspective view thereof;

FIG. 6 is a top plan view of a modified form of the mask illustrated in FIG. 1;

FIG. 7 is a front elevation thereof;

FIG. 8 is an end elevation thereof;

FIG. 9 is a front perspective view thereof, disclosing the mask in an unfolded condition; and

FIG. 10 is a rear perspective thereof.

Referenced Cited
U.S. Patent Documents
D195612 July 1963 Liloia
D235687 July 1975 Bragg
2752916 July 1956 Haliczer
3971369 July 27, 1976 Aspelin et al.
3985132 October 12, 1976 Boyce
Patent History
Patent number: D249072
Type: Grant
Filed: Nov 22, 1976
Date of Patent: Aug 22, 1978
Assignee: American Optical Corporation (Southbridge, MA)
Inventor: William H. Revoir (Barrington, RI)
Primary Examiner: Bernard Ansher
Attorney: Jeremiah J. Duggan
Application Number: 5/743,995
Classifications
Current U.S. Class: D29/8; 128/1462
International Classification: D2902; D2499;