Full face respirator lens

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Description

FIG. 1 is a perspective view of a full face respirator lens showing the new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a left-side elevational view thereof.

FIG. 4 is a right-side elevational view thereof.

FIG. 5 is a rear elevational view thereof.

FIG. 6 is a bottom elevational view thereof; and,

FIG. 7 is a top elevational view thereof.

The broken lines in FIGS. 1, 2, and 5-7 are for illustrative purposes only and form no part of the claimed design.

Referenced Cited
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Other references
  • MSA Advantage 1000 Low-Maintenance Respirator product literature (1993). Scott Weld-O-Vista.TM. product literature (1994). MSA Constant Flow or Pressure Demand Duo-Flo.TM. Respirator product literature (1988). MSA Optimair.TM. 6A Papr with Optifilter.TM. Cartridges product literature (1992). ProTech Respirators, Inc. product literature (1993). Scott Health & Safety Full-Line Catalog product literature (May 1989). MSA Ultra Elite.TM. Facepiece product literature dated (1994). Drager Luft holen . . . Der Atemschutz-Katalog (1993-1994). Scott respirator product literature (1992). Cabot Safety Respirator Products--The Life Line product literature (1993). North RP-107 Air-Purifying Respiratory Protection Catalog (1991). MSA Comfo.RTM. II and Comfo Elite.RTM. Respirators product literature (1993). MSA Comfo Classic Respirators product literature (1995). MSA ComfoElite.TM. product literature (1990). Gerson Signature Series 9000 product literature (1995). Gerson Signature Series 8000 product literature (1995). Willson product literature (1991). The Lab Safety Supply Catalog "Respirators" pp. 130, 112, 110, 1994, Ex Room. ISI Facemask product literature--admitted prior art. Neoterik advertisement for the Technirama respirator--admitted prior art. Drager Atemkomfort mit DragerSchutz Panorama BelAir M product literature--admitted prior art. Drager Luft holen . . . Der Atemschutz-Katalog (1993-1994). Scott respirator product literature (1992). Bilsom Group Eye, Face, Respiratory and Hearing Protection product literature--admitted prior art. North 7600 Series Full Facepiece Air-Purifying Respirators--admitted prior art.
Patent History
Patent number: D409744
Type: Grant
Filed: Mar 5, 1997
Date of Patent: May 11, 1999
Assignee: Minnesota Mining and Manufacturing Company (St. Paul, MN)
Inventors: Vaughn B. Grannis (Inver Grove Heights, MN), David P. Knivsland (North St. Paul, MN), Joseph G. Reischel (Woodbury, MN), Gerald M. Brostrom (Burnsville, MN), David C. Byram (River Falls, WI)
Primary Examiner: Stella Reid
Attorney: Karl G. Hanson
Application Number: 0/67,529
Classifications
Current U.S. Class: D24/1104; D24/1101
International Classification: 2902;