United States Patent D334633

Rudolph, Kevin A. (Kansas City, MO)
Application Number:
Publication Date:
Filing Date:
Hans Rudolph, Inc. (Kansas City, MO)
Primary Class:
Field of Search:
D29/6, D29/7, D29/8, D29/9, 128/206.15, 128/206.17, 128/207.12, 128/206.24, 128/206.12, 128/207.11, 2/9, 2/6
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US Patent References:
D326540Filter maskMay, 1992ScholeyD29/7
5069205Quick-donning head harness assemblyDecember, 1991Urso128/206.12
5038776Universal head harnessAugust, 1991Harrison et al.128/206.12
4960121Half-face mask assemblyOctober, 1990Nelson et al.D29/7
4846166Non-invasive quantitative method for fit testing respirators and corresponding respirator apparatusJuly, 1989Willeke128/200.24
4765325Method and apparatus for determining respirator face mask fitAugust, 1988Crutchfield128/202.13
4674492Alarm system for respirator apparatus and method of useJune, 1987Niemeyer128/202.22
4414973Respirator face maskNovember, 1983Matheson et al.128/206.15

Other References:
Hans Rudolph, Inc. Product Sheet; "General Product Info" . . . Model #7200; Dec. 1984.
David C. Zavala; Nutritional Assessment . . . Training Handbook; copyright 1989, pp. 55-56.
Primary Examiner:
Chin, Kay H.
Attorney, Agent or Firm:
Litman, McMahon & Brown
1. The ornamental design for a mask, as shown and described.


FIG. 1 is a front perspective view of a mask showing my new design;

FIG. 2 is an enlarged top plan view thereof;

FIG. 3 is an enlarged side elevational view thereof showing the relative positions of a user in phantom lines;

FIG. 4 is an enlarged second side elevational view thereof, showing a user in phantom lines;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is an enlarged rear elevational view thereof;

FIG. 7 is an enlarged bottom plan view thereof; and,

FIG. 8 is a rear elevational and cross-sectional view, taken along 8--8 of FIG. 3.