Face mask

Description

FIG. 1 is a top plan view of a face mask showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view thereof, the opposite side view being a mirror image of that shown; and

FIG. 6 is a cross sectional view thereof taken along the line 6--6 of FIG. 2.

The broken line showing of a cushion in combination with the faceplate is for illustrative purposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D285496 September 2, 1986 Berman
D293613 January 5, 1988 Wingler
D300473 March 28, 1989 Roush
2666432 November 1954 Stanton
2830584 April 1958 Hollmann et al.
2848994 August 1958 Aguado
2931356 April 1960 Schwartz
3105488 October 1963 Richards
3315674 April 1967 Bloom et al.
3805782 April 1974 Welch
3908648 September 1975 McCosker
3918448 November 1975 McCosker
4062357 December 13, 1977 Laerdal
4195629 April 1, 1980 Halford
Foreign Patent Documents
0288937 April 1988 EPX
2652128 December 1977 DEX
2225177 November 1974 FRX
2443918 July 1980 FRX
0842642 July 1960 GBX
1467828 March 1977 GBX
1516494 July 1978 GBX
2038703A December 1979 GBX
2045092 October 1980 GBX
Patent History
Patent number: D323908
Type: Grant
Filed: Nov 9, 1989
Date of Patent: Feb 11, 1992
Assignee: Smith Industries Medical Systems, Inc. (Keene, NH)
Inventors: William H. Hollister (Nelson, NH), Cary D. Carruthers (Fitzwilliam, NH)
Primary Examiner: Kay H. Chin
Attorneys: Linda M. Buckley, Sewall P. Bronstein
Application Number: 7/435,325
Classifications
Current U.S. Class: D29/7