Dust respirator

- American Cyanamid Company
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Description

FIG. 1 is a top plan view of a dust respirator embodying the new design;

FIG. 2 is a front view of the new design, the rear view being identical to the front view;

FIG. 3 is a bottom plan view of the new design;

FIG. 4 is a side view of the new design with the straps broken away, each side being identical in appearance;

FIG. 5 is a top plan view of a modified form of the mask illustrated in FIG. 1;

FIG. 6 is a front view thereof, the rear view being identical to the front view;

FIG. 7 is a bottom plan view thereof; and

FIG. 8 is a side view thereof with the straps broken away, each side being identical in appearance.

Referenced Cited
U.S. Patent Documents
RE28102 August 1974 Mayhew
D235687 July 1975 Bragg
D249072 August 22, 1978 Revoir
2751905 June 1956 Creelman
3971369 July 27, 1976 Aspelin et al.
Patent History
Patent number: D259817
Type: Grant
Filed: Sep 10, 1979
Date of Patent: Jul 7, 1981
Assignee: American Cyanamid Company (Stamford, CT)
Inventor: Willard C. White (Huntington, NY)
Primary Examiner: Bernard Ansher
Attorney: Bruce F. Jacobs
Application Number: 6/74,212
Classifications
Current U.S. Class: D29/8; D/2234
International Classification: D2902; D249;