Respirator face mask

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Description

FIG. 1 is a front view;

FIG. 2 is a back view;

FIG. 3 is a side view thereof, the opposite side view being a mirror image thereto;

FIG. 4 is a top view; and,

FIG. 5 is a bottom view.

Referenced Cited
U.S. Patent Documents
D271246 November 1, 1983 Matheson et al.
D286213 October 14, 1986 Maryyanek et al.
D351226 October 4, 1994 Parvatharaj
4603692 August 5, 1986 Montesi
4886058 December 12, 1989 Brostrom et al.
4960121 October 2, 1990 Nelson et al.
5062421 November 5, 1991 Burns et al.
5505197 April 9, 1996 Scholey
Patent History
Patent number: D382341
Type: Grant
Filed: Mar 27, 1996
Date of Patent: Aug 12, 1997
Assignee: Mine Safety Appliances Company (Pittsburgh, PA)
Inventor: Paul X. Freund (Mars, PA)
Primary Examiner: Louis S. Zarfas
Assistant Examiner: I. Simmons
Attorney: James G. Uber
Application Number: 0/52,264
Classifications
Current U.S. Class: D24/1101; D24/1103; D24/1104
International Classification: 2902;